Cylinder Head Acura RL II рестайлинг

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REAR

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Engine Compression Inspection

Note. After the inspection, you must reset the powertrain control module (PCM). Otherwise, the PCM will continue to stop the fuel injectors from operating.

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1. Warm up the engine to normal operating temperature (cooling fan comes on).
2. Turn the ignition switch to LOCK (0).
3. Connect the Honda Diagnostic System (HDS) to the data link connector (DLC) (see step 2 in «GENERAL TROUBLESHOOTING INFORMATION»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems) ).
4. Turn the ignition switch to ON (II).
5. Make sure the HDS communicates with the vehicle and the PCM. If it doesn't communicate, troubleshoot the DLC circuit (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#pgm-fi-system__dlc-circuit-troubleshooting) ).
6. Select PGM-FI, INSPECTION, then, ALL INJECTORS OFF on the HDS.
7. Turn the ignition switch to LOCK (0).
8. Remove the six ignition coils (see «IGNITION COIL REMOVAL/INSTALLATION»(/acura/rl/ii-2008-2012/remont/ignition-system/#ignition-system) ).
9. Remove the six spark plugs.
10. Attach the compression gauge to a spark plug hole.
11. Step on the accelerator pedal to open the throttle plate, then crank the engine with the starter motor, and measure the compression. Compression Pressure: Above 930 kPa (9.5 kgf/cm 2 , 135 psi)
12. Measure the compression on the remaining cylinders. Maximum Variation: Within 200 kPa (2.0 kgf/cm 2 , 28 psi)
13. If the compression is not within specifications, check the following items, then remeasure the compression. Incorrect valve clearance Confirmation of cam timing Damaged or worn cam lobes Damaged or worn valves and seats Damaged cylinder head gasket Damaged or worn piston rings Damaged or worn piston and cylinder bore
14. Remove the compression gauge from the spark plug hole.
15. Install the six spark plugs.
16. Install the six ignition coils (see «IGNITION COIL REMOVAL/INSTALLATION»(/acura/rl/ii-2008-2012/remont/ignition-system/#ignition-system) ).
17. Select «PCM RESET»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__pcm-reset) to cancel the ALL INJECTORS STOP on the HDS.

Special Tools Required

1. Air pressure regulator 07AAJ-PNAA101
2. VTEC air stop tool A07AAJ-R70A100
3. VTEC air stop tool B 07AAJ-R70A200
4. VTEC/VCM air adapter 070AJ-001A101

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1. Start the engine and let it run for 5 minutes, then turn the ignition switch to LOCK (0).
2. Remove the six spark plugs.
3. Remove the cylinder head covers (see «CYLINDER HEAD COVER REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
4. Rotate the crankshaft pulley clockwise, and visually check all intake primary rocker arms (A) and intake secondary rocker arms (B) moves independently. If the intake primary rocker arm and the intake secondary rocker arm move together, remove the intake primary rocker arm and the intake secondary rocker arm as an assembly, and check that the pistons in the rocker arms move smoothly. If any intake rocker arm needs replacing, replace the primary and secondary rocker arms as an assembly, then retest. If the intake primary rocker arm and the intake secondary rocker arm move independently, go to step 5 .
5. Rotate the crankshaft pulley clockwise, and visually check all exhaust primary rocker arms (A) and exhaust secondary rocker arms (B) move independently. If the exhaust primary rocker arm and the exhaust primary rocker arm move together, remove the exhaust primary rocker arm and the exhaust secondary rocker arm as an assembly, and check that the pistons in the rocker arms move smoothly. If any exhaust rocker arm needs replacing, replace the primary and secondary rocker arms as an assembly, then retest. If the exhaust primary rocker arm and the exhaust secondary rocker arm move independently, go to step 6 .
6. Inspect the valve clearance (see «VALVE CLEARANCE ADJUSTMENT»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head__valve-clearance-adjustment) ).
7. Check that the air pressure on the shop air compressor gauge indicates over 981 kPa (10.0 kgf/cm 2 , 142 psi).
8. Remove the sealing bolts from the front cylinder head, then install the VTEC/VCM air adapter (A) to the inspection hole and install the VTEC air stop tool B, then connect the air pressure regulator (C).
9. Remove the sealing bolts from the rear cylinder head, then install the VTEC air stop tool A to the inspection hole and install the VTEC/VCM air adapter (B), then connect the air pressure regulator (C).
10. Loosen the valve on the regulator, and apply the specified air pressure. Specified Air Pressure: 550-690 kPa (5.6-7.0 kgf/cm 2 , 80-100 psi)
11. With the specified air pressure applied, rotate the crankshaft pulley clockwise, and visually check all intake primary rocker arms (A) and intake secondary rocker arms (B) move together. If the intake primary rocker arm and the intake secondary rocker arm move independently, remove the intake primary rocker arm and the intake secondary rocker arm as an assembly, and check that the pistons in the rocker arms move smoothly. If any intake rocker arm needs replacing, replace the primary and secondary rocker arms as an assembly, then retest. If the intake primary rocker arm and the intake secondary rocker arm move together, go to step 12 .
12. With the specified air pressure applied, rotate the crankshaft pulley clockwise, and visually check all exhaust rocker primary arms (A) and exhaust secondary rocker arms (B) move together. If the exhaust primary rocker arm and the exhaust secondary rocker arm move independently, remove the exhaust primary rocker arm and the exhaust secondary rocker arm as an assembly, and check that the pistons in the rocker arms move smoothly. If any exhaust rocker arm needs replacing, replace the primary and secondary rocker arms as an assembly, then retest. If the exhaust primary rocker arm and the exhaust secondary rocker arm move together, go to step 13 .
13. Remove the air pressure regulator, the VTEC/VCM air adapter, the VTEC air stop tool A, and the VTEC air stop tool B.
14. Tighten the sealing bolts to 22 N.m (2.2 kgf.m, 16 lbf.ft).
15. Install the cylinder head covers (see «CYLINDER HEAD COVER INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
16. Install the six spark plugs.

Valve Clearance Adjustment

Note. Adjust the valves only when the cylinder head temperature is less than 100°F (38°C).

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1. Remove the right upper fender trim (see «UPPER GRILLE REPLACEMENT»(/acura/rl/ii-2008-2012/remont/exteriorinterior-trim/#exterior-trim) ).
2. Remove the cylinder head covers (see «CYLINDER HEAD COVER REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
3. Set the No. 1 piston at top dead center (TDC). Align the pointer (A) on the front upper cover with the No. 1 piston TDC mark (B) on the front camshaft pulley.
4. Select the correct thickness feeler gauge for the valves you are going to check. Valve Clearance Intake: 0.20-0.24 mm (0.008-0.009 in.) Exhaust: 0.28-0.32 mm (0.011-0.013 in.) REAR FRONT
5. Insert the feeler gauge (A) between the adjusting screw and the end of the valve stem on the No. 1 cylinder, and slide it back and forth; you should feel a slight amount of drag. INTAKE EXHAUST
6. If you feel too much or too little drag, loosen the locknut, and turn the adjusting screw until the drag on the feeler gauge is correct. INTAKE EXHAUST
7. While holding the adjusting screw with the screw driver, tighten the locknut, then recheck the clearance. Repeat the adjustment, if necessary. Specified Torque 20 N.m (2.0 kgf.m, 14 lbf.ft) Apply new engine oil to the nut threads.
8. Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 4 piston TDC mark (B) on the front camshaft pulley.
9. Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.
10. Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 2 piston TDC mark (B) on the front camshaft pulley.
11. Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.
12. Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 5 piston TDC mark (B) on the front camshaft pulley.
13. Check and, if necessary, adjust the valve clearance on the No. 5 cylinder.
14. Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 3 piston TDC mark (B) on the front camshaft pulley.
15. Check and, if necessary, adjust the valve clearance on the No. 3 cylinder.
16. Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 6 piston TDC mark (B) on the front camshaft pulley.
17. Check and, if necessary, adjust the valve clearance on the No. 6 cylinder.
18. Install the cylinder head covers (see «CYLINDER HEAD COVER INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).

1. Holder handle 07JAB-001020B
2. Holder attachment, 50 mm, offset 07MAB-PY3010A
3. Socket, 19 mm 07JAA-001020A, or a commercially available 19 mm socket

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1. Raise the vehicle on the lift.
2. Remove the right front wheel.
3. Remove the splash shield.
4. Remove the drive belt (see «DRIVE BELT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/charging-system/#charging-system) ).
5. Hold the pulley with the holder handle (A) and the holder attachment (B).
6. Remove the bolt with a heavy duty 19 mm socket (C) and a breaker bar, then remove the crankshaft pulley.

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1. Remove any oil and clean the pulleys (A), the crankshaft (B), the bolt (C), and the washer (D). Lubricate with new engine oil as shown below.
2. Install the crankshaft pulley, and tighten the bolt. Do not use an impact wrench. Hold the pulley with the holder handle (A) and the holder attachment (B). Tighten the bolt to 64 N.m (6.5 kgf.m, 47 lbf.ft) with a torque wrench and a 19 mm socket (C). Mark the bolt head (D) and the crankshaft pulley (E) as shown, then tighten the bolt an additional 60° (The mark on the bolt head lines up with the mark on the crankshaft pulley).
3. Install the drive belt (see «DRIVE BELT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/charging-system/#charging-system) ).
4. Install the splash shield.
5. Install the right front wheel.

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1. Remove the right upper fender trim (see «UPPER GRILLE REPLACEMENT»(/acura/rl/ii-2008-2012/remont/exteriorinterior-trim/#exterior-trim) ).
2. Remove the drive belt (see «DRIVE BELT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/charging-system/#charging-system) ).
3. Remove the front upper cover.
4. Inspect the timing belt for cracks and oil or coolant contamination. Replace the belt if it is cracked, or is contaminated with oil or coolant. Wipe off any oil or solvent that gets on the belt pulleys.

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1. Remove the right upper fender trim (see «UPPER GRILLE REPLACEMENT»(/acura/rl/ii-2008-2012/remont/exteriorinterior-trim/#exterior-trim) ).
2. Turn the crankshaft so its white mark (A) lines up with the pointer (B). NOTE: The other pointer (C) is not used.
3. Check that the No. 1 piston top dead center (TDC) mark (A) on the front camshaft pulley and the pointer (B) on the front upper cover are aligned. NOTE: If the marks are not aligned, rotate the crankshaft 360 degrees, and recheck the camshaft pulley mark.
4. Remove the right front wheel.
5. Remove the splash shield.
6. Remove the drive belt (see «DRIVE BELT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/charging-system/#charging-system) ).
7. Remove the drive belt auto-tensioner (see «DRIVE BELT AUTO-TENSIONER REPLACEMENT»(/acura/rl/ii-2008-2012/remont/charging-system/#charging-system) ).
8. Support the engine with a jack and wood block under the oil pan.
9. Remove the ground cable (A), then remove the upper engine mount bracket (B).
10. Remove the front upper cover (A) and rear upper cover (B).
11. Remove the crankshaft pulley (see step 5 in «CRANKSHAFT PULLEY REMOVAL AND INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
12. Remove the lower cover.
13. Remove one of the battery clamp bolts from the battery tray, and grind the end of it as shown below.
14. Thread in the battery clamp bolt as shown to hold the timing belt adjuster in its current position. Tighten it by hand; do not use a wrench.
15. Remove the side engine mount bracket.
16. Remove the idler pulley bolt (A) and the idler pulley (B), then remove the timing belt. Discard the idler pulley bolt.

Timing Belt Installation

Note. The following procedure is for installing a used timing belt. If you are installing a new belt, refer to TIMING BELT REPLACEMENT .

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1. Clean the timing belt pulleys, the timing belt guide plate, and the upper and lower covers.
2. Set the timing belt drive pulley to top dead center (TDC) by aligning the TDC mark (A) on the tooth of the timing belt drive pulley with the pointer (B) on the oil pump.
3. Set the camshaft pulleys to TDC by aligning the TDC marks (A) on the camshaft pulleys with the pointers (B) on the back covers. FRONT REAR
4. Loosely install the idler pulley with a new idler pulley bolt so the pulley can move, but does not come off.
5. If the auto-tensioner has extended and the timing belt cannot be installed, perform the timing belt replacement procedure (see «TIMING BELT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head__timing-belt-replacement) ).
6. Install the timing belt in a counterclockwise sequence starting with the drive pulley. Take care not to damage the timing belt when installing it. Drive pulley (A) Idler pulley (B) Front camshaft pulley (C) Water pump pulley (D) Rear camshaft pulley (E) Adjusting pulley (F)
7. Tighten the idler pulley bolt.
8. Remove the battery clamp bolt from the back cover.
9. Install the side engine mount bracket.
10. Install the timing belt guide plate as shown below.
11. Install the lower cover.
12. Install the crankshaft pulley (see «CRANKSHAFT PULLEY REMOVAL AND INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
13. Install the front upper cover (A) and the rear upper cover (B).
14. Rotate the crankshaft pulley about six turns clockwise so the timing belt positions itself on the pulleys.
15. Turn the crankshaft pulley so the white mark (A) lines up with the pointer (B). NOTE: The other pointer (C) is not used.
16. Check the camshaft pulley marks. If the camshaft pulley marks are at TDC, go to step 17 . If the camshaft pulley marks are not at TDC, remove the timing belt and repeat steps 2 through 16 . FRONT REAR
17. Install the upper engine mount bracket (A), then tighten the bolts in the numbered sequence shown below.
18. Install the ground cable (B).
19. Install the drive belt auto-tensioner (see «DRIVE BELT AUTO-TENSIONER REPLACEMENT»(/acura/rl/ii-2008-2012/remont/charging-system/#charging-system) ).
20. Install the drive belt (see «DRIVE BELT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/charging-system/#charging-system) ).
21. Install the splash shield.
22. Install the right front wheel.
23. Do the crankshaft position (CKP) pattern clear/CKP pattern learn procedure (see «CRANK (CKP) PATTERN CLEAR/CRANK (CKP) PATTERN LEARN»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems) ).

Timing Belt Replacement

Note. The following procedure is for the installation of a new timing belt. If you are installing a used belt, refer to TIMING BELT INSTALLATION .

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1. Remove the timing belt (see «TIMING BELT REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
2. Clean the timing belt pulleys, the timing belt guide plate, and the upper and lower covers.
3. Set the timing belt drive pulley to top dead center (TDC) by aligning the TDC mark (A) on the tooth of the timing belt drive pulley with the pointer (B) on the oil pump.
4. Set the camshaft pulleys to TDC by aligning the TDC marks (A) on the camshaft pulleys with the pointers (B) on the back covers. FRONT REAR
5. Remove the battery clamp bolt from the back cover.
6. Remove the auto-tensioner.
7. Align the holes on the rod and housing of the auto-tensioner.
8. Use a hydraulic press to slowly compress the auto-tensioner. Insert a 2.0 mm (0.08 in.) pin through the housing and the rod. NOTE: The compression pressure should not exceed 9,800 N (1,000 kgf, 2,200 lbf).
9. Install the auto-tensioner. NOTE: Make sure the pin stays in place.
10. Thread in the battery clamp bolt as shown below to hold the timing belt adjuster. Tighten it by hand, do not use a wrench.
11. Loosely install the idler pulley with a new idler pulley bolt so the pulley can move but does not come off.
12. Install the timing belt in a counterclockwise sequence starting with the drive pulley. Drive pulley (A) Idler pulley (B) Front camshaft pulley (C) Water pump pulley (D) Rear camshaft pulley (E) Adjusting pulley (F)
13. Tighten the idler pulley bolt.
14. Remove the pin from the auto-tensioner.
15. Remove the battery clamp bolt from the back cover.
16. Install the side engine mount bracket.
17. Install the timing belt guide plate as shown below.
18. Install the lower cover.
19. Install the crankshaft pulley (see «CRANKSHAFT PULLEY REMOVAL AND INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
20. Install the front upper cover (A) and the rear upper cover (B).
21. Rotate the crankshaft pulley about six turns clockwise so the timing belt positions itself on the pulleys.
22. Turn the crankshaft pulley so the white mark (A) lines up with the pointer (B). NOTE: The other pointer (C) is not used.
23. Check the camshaft pulley marks. If the camshaft pulley marks are at TDC, go to step 24 . If the camshaft pulley marks are not at TDC, remove the timing belt and repeat steps 3 through 23 . FRONT REAR
24. Install the upper engine mount bracket (A), then tighten the bolts in the numbered sequence shown.
25. Install the ground cable (B).
26. Install the drive belt auto-tensioner (see «DRIVE BELT AUTO-TENSIONER REPLACEMENT»(/acura/rl/ii-2008-2012/remont/charging-system/#charging-system) ).
27. Install the drive belt (see «DRIVE BELT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/charging-system/#charging-system) ).
28. Install the splash shield.
29. Install the right front wheel.
30. Do the crankshaft position (CKP) pattern clear/CKP pattern learn procedure (see «CRANK (CKP) PATTERN CLEAR/CRANK (CKP) PATTERN LEARN»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems) ).

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1. Remove the timing belt (see «TIMING BELT REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
2. Remove the crankshaft position (CKP) sensor (see «CKP SENSOR REPLACEMENT»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#pgm-fi-system) ).
3. Remove the timing belt drive pulley (A).
4. Inspect the timing belt drive pulley and the key (B) for damage. If it is cracked or damaged, replace the timing belt drive pulley.
5. Install the timing belt drive pulley.
6. Install the CKP sensor (see «CKP SENSOR REPLACEMENT»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#pgm-fi-system) ).
7. Install the timing belt (see «TIMING BELT INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head__timing-belt-installation) ).

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1. Remove the timing belt (see «TIMING BELT REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
2. Remove the battery clamp bolt from the back cover.
3. Remove the auto-tensioner (see step 6 in «TIMING BELT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head__timing-belt-replacement) ).
4. Remove the bolt (A), then remove the timing belt adjuster (B) and the collar (C).
5. Install the timing belt adjuster.
6. Install the timing belt (see «TIMING BELT INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head__timing-belt-installation) ).

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1. Remove the intake manifold (see «REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#intake-manifold-and-exhaust-system) ).
2. Remove the three ignition coils from the front cylinder head (see «IGNITION COIL REMOVAL/INSTALLATION»(/acura/rl/ii-2008-2012/remont/ignition-system/#ignition-system) ).
3. Remove the harness holder mounting bolt (A) and the harness clamp (B), then remove the harness holder (C) from the bracket.
4. Remove the front cylinder head cover.

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1. Remove the intake manifold (see «REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#intake-manifold-and-exhaust-system) ).
2. Remove the three ignition coils from the rear cylinder head (see «IGNITION COIL REMOVAL/INSTALLATION»(/acura/rl/ii-2008-2012/remont/ignition-system/#ignition-system) ).
3. Remove the power steering hose clamp mounting bolt (A), the harness holder mounting bolts (B), the harness clamp (C), and the breather hose (D).
4. Remove the wire harness (E) from the rear upper cover.
5. Remove the rear cylinder head cover.

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1. Check the spark plug seals for damage. If any seal is damaged, replace it.
2. Thoroughly clean the head cover gasket and the groove.
3. Install the head cover gasket (A) in the groove of the cylinder head cover (B). Make sure the head cover gasket is seated securely.
4. Remove all of the old liquid gasket from the rocker shaft holder and the cylinder head.
5. Clean the head cover contacting surfaces with a shop towel.
6. Apply liquid gasket, P/N 08717-0004,08718-0001, 08718-0003, or 08718-0009, evenly to the rocker shaft holder mating areas (A). Install the component within 5 minutes of applying the liquid gasket. NOTE: If you apply liquid gasket P/N 08718-0012, the component must be installed within 4 minutes. If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply the new liquid gasket.
7. Set the spark plug seals (A) on the spark plug tubes, and install the front cylinder head cover (B). NOTE: Wait at least 30 minutes before filling the engine with oil. Do not run the engine for at least 3 hours after installing the cylinder head cover.
8. Inspect the spark plug seals for damage.
9. Inspect the cover washers (C). Replace any washer that is damaged or deteriorated.
10. Tighten the bolts in three steps. In the final step torque all bolts, in sequence, 12 N.m (1.2 kgf.m, 8.8 lbf.ft).
11. Install the harness holder (A) to the bracket, then install the harness holder mounting bolt (B) and the harness clamp (C).
12. Install the three ignition coils to the front cylinder head (see «IGNITION COIL REMOVAL/INSTALLATION»(/acura/rl/ii-2008-2012/remont/ignition-system/#ignition-system) ).
13. Install the intake manifold (see «INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#intake-manifold-and-exhaust-system) ).

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1. Check the spark plug seals for damage. If any seal is damaged, replace it.
2. Thoroughly clean the head cover gasket and the groove.
3. Install the head cover gasket (A) in the groove of the cylinder head cover (B). Make sure the head cover gasket is seated securely.
4. Remove all of the old liquid gasket from the rocker shaft holder and the cylinder head.
5. Clean the head cover contacting surfaces with a shop towel.
6. Apply liquid gasket, P/N 08717-0004,08718-0001, 08718-0003, or 08718-0009, evenly to the rocker shaft holder mating areas (A). Install the component within 5 minutes of applying the liquid gasket. NOTE: If you apply liquid gasket P/N 08718-0012, the component must be installed within 4 minutes. If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply the new liquid gasket.
7. Set the spark plug seals (A) on the spark plug tubes, and install the rear cylinder head cover (B). NOTE: Wait at least 30 minutes before filling the engine with oil. Do not run the engine for at least 3 hours after installing the cylinder head cover.
8. Inspect the spark plug seals for damage.
9. Inspect the cover washers (C). Replace any washer that is damaged or deteriorated.
10. Tighten the bolts in three steps. In the final step torque all bolts, in sequence, 12 N.m (1.2 kgf.m, 8.8 lbf.ft).
11. Install the wire harness (A) to the rear upper cover.
12. Install the power steering hose clamp mounting bolt (B), the harness holder mounting bolts (C), the breather hose (D), and the harness clamp (E).
13. Install the three ignition coils to the rear cylinder head (see «IGNITION COIL REMOVAL/INSTALLATION»(/acura/rl/ii-2008-2012/remont/ignition-system/#ignition-system) ).
14. Install the intake manifold (see «INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#intake-manifold-and-exhaust-system) ).

Note. Use fender covers to avoid damaging painted surfaces. To avoid damaging the wiring and terminals, unplug the wiring connectors carefully while holding the connector portion. To avoid damaging the cylinder head, wait until the engine coolant temperature drops below 100°F (38°C) before loosening the cylinder head bolts. Mark all wiring and hoses to avoid misconnection. Also, be sure that they do not contact any other wiring or hoses, or interfere with any other parts.

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1. Relieve the fuel pressure (see «FUEL PRESSURE RELIEVING»(/acura/rl/ii-2008-2012/remont/fuel-system/#fuel-supply-system__fuel-pressure-relieving) ).
2. Do the battery terminal disconnection procedure (see «DISCONNECTION»(/acura/rl/ii-2008-2012/remont/body-electrical/#battery__disconnection) ).
3. Drain the engine coolant (see «COOLANT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/cooling-system-mechanical/#cooling-system) ).
4. Remove the drive belt (see «DRIVE BELT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/charging-system/#charging-system) ).
5. Remove the power steering (P/S) pump (A) and the bolt (B) securing the P/S hose clamp.
6. Remove the alternator (see «ALTERNATOR REMOVAL AND INSTALLATION»(/acura/rl/ii-2008-2012/remont/charging-system/#charging-system) ).
7. Remove the intake manifold (see «REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#intake-manifold-and-exhaust-system) ).
8. Remove the six ignition coils (see «IGNITION COIL REMOVAL/INSTALLATION»(/acura/rl/ii-2008-2012/remont/ignition-system/#ignition-system) ).
9. Remove the timing belt (see «TIMING BELT REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
10. Remove the cylinder head covers (see «CYLINDER HEAD COVER REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
11. Remove the following engine wire harness connectors and wire harness clamps from the cylinder head: Six injector connectors Engine coolant temperature (ECT) sensor 1 connector Oil pressure switch connector Camshaft position (CMP) sensor connector Rocker arm oil control solenoid connector Rocker arm oil pressure switch connector Front and rear air fuel ratio (A/F) sensor connector Front and rear secondary heated oxygen sensor (secondary HO2S) connector
12. Remove the front warm up three way catalytic converter (front WU-TWC) (see «FRONT»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#catalytic-converter-system) ) and the rear warm up three way catalytic converter (rear WU-TWC) (see «REAR»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#catalytic-converter-system) ).
13. Remove the quick-connect fitting cover (A), then disconnect the fuel feed hose (B) (see «FUEL LINE/QUICK-CONNECT FITTING REMOVAL»(/acura/rl/ii-2008-2012/remont/fuel-system/#fuel-supply-system__fuel-linequick-connect-fitting-removal) ).
14. Remove the connector bracket from the front cylinder head.
15. Remove the engine mount control solenoid valve bracket and the harness clamp bracket from the rear cylinder head.
16. Remove the fuel rails (see «INJECTOR REPLACEMENT»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#pgm-fi-system) ).
17. Remove the water passage (see «WATER PASSAGE REPLACEMENT»(/acura/rl/ii-2008-2012/remont/cooling-system-mechanical/#cooling-system) ).
18. Remove the front and rear camshaft pulleys (A) and the front and rear back covers (B).
19. Remove the cylinder head bolts. To prevent warpage, loosen the bolts in sequence 1/3 turn at a time; repeat the sequence until all bolts are loosened. FRONT REAR
20. Remove the cylinder heads.

Scheme 113

Scheme 114

Scheme 115

1. Do the battery removal procedure (see «REMOVAL»(/acura/rl/ii-2008-2012/remont/body-electrical/#battery__removal) ).
2. Drain the engine coolant (see «COOLANT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/cooling-system-mechanical/#cooling-system) ).
3. Disconnect the upper radiator hose (A) and the lower radiator hose (B).
4. Remove the exhaust gas recirculation (EGR) valve (see «EGR VALVE REPLACEMENT»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#egr-system) ).
5. Remove the stud bolts.
6. Remove the timing belt (see «TIMING BELT REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
7. Remove the rocker arm assembly (see «ROCKER ARM ASSEMBLY REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
8. Remove the front camshaft pulley.
9. Remove the thrust cover (A), then remove the front camshaft (B).
10. Install the front camshaft in the reverse order of removal. Always use a new O-ring (C). Apply new engine oil to the journals and the cam lobes.
11. Install the rocker arm assembly (see «CAMSHAFT, ROCKER ARM ASSEMBLY, CAMSHAFT SEAL, AND PULLEY INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
12. Install the timing belt (see «TIMING BELT INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head__timing-belt-installation) ).
13. Install the stud bolts, then install the EGR valve (see «EGR VALVE REPLACEMENT»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#egr-system) ).
14. Install the upper radiator hose and the lower radiator hose.
15. Adjust the valve clearance (see «VALVE CLEARANCE ADJUSTMENT»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head__valve-clearance-adjustment) ).
16. Do the battery installation procedure (see «INSTALLATION»(/acura/rl/ii-2008-2012/remont/body-electrical/#battery) ).
17. Fill the radiator with engine coolant and bleed the air out (see step 8 in «COOLANT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/cooling-system-mechanical/#cooling-system) ).
18. Do the crankshaft position (CKP) pattern clear/CKP pattern learn procedure (see «CRANK (CKP) PATTERN CLEAR/CRANK (CKP) PATTERN LEARN»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems) ).

Scheme 116

Scheme 117

1. Relieve the fuel pressure (see «FUEL PRESSURE RELIEVING»(/acura/rl/ii-2008-2012/remont/fuel-system/#fuel-supply-system__fuel-pressure-relieving) ).
2. Remove the quick-connect fitting cover, then disconnect the fuel feed hose (see «FUEL LINE/QUICK-CONNECT FITTING REMOVAL»(/acura/rl/ii-2008-2012/remont/fuel-system/#fuel-supply-system__fuel-linequick-connect-fitting-removal) ).
3. Remove the intake manifold (see «REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#intake-manifold-and-exhaust-system) ).
4. Remove the purge joint (A).
5. Remove the two bolts (B) securing the vacuum line.
6. Remove the timing belt (see «TIMING BELT REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
7. Remove the rocker arm assembly (see «ROCKER ARM ASSEMBLY REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
8. Remove the rear camshaft pulley.
9. Remove the thrust cover (A), then remove the rear camshaft (B).
10. Install the rear camshaft in the reverse order of removal. Always use a new O-ring (C). Apply new engine oil to the journals and cam lobes.
11. Install the rocker arm assembly (see «CAMSHAFT, ROCKER ARM ASSEMBLY, CAMSHAFT SEAL AND PULLEY INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
12. Install the timing belt (see «TIMING BELT INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head__timing-belt-installation) ).
13. Install the vacuum line and the purge joint.
14. Install the intake manifold (see «INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#intake-manifold-and-exhaust-system) ).
15. Connect the fuel feed hose (see «FUEL LINE/QUICK-CONNECT FITTING INSTALLATION»(/acura/rl/ii-2008-2012/remont/fuel-system/#fuel-supply-system__fuel-linequick-connect-fitting-installation) ), then install the quick-connect fitting cover.
16. Adjust the valve clearance (see «VALVE CLEARANCE ADJUSTMENT»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head__valve-clearance-adjustment) ).
17. Inspect for fuel leaks. Turn the ignition switch to ON (II) (do not operate the starter) so the fuel pump runs for about 2 seconds and pressurizes the fuel line. Repeat this operation three times, then check for fuel leakage at any point in the fuel line.
18. Do the crankshaft position (CKP) pattern clear/CKP pattern learn procedure (see «CRANK (CKP) PATTERN CLEAR/CRANK (CKP) PATTERN LEARN»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems) ).

Scheme 118

1. Remove the cylinder head (see «CYLINDER HEAD REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
2. Inspect the camshaft (see «CAMSHAFT INSPECTION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
3. Check the cylinder head for warpage. Measure along the edges, and three ways across the center. If warpage is less than 0.05 mm (0.002 in.), cylinder head resurfacing is not required. If warpage is between 0.05 mm (0.002 in.) and 0.2 mm (0.008 in.), resurface the cylinder head. Maximum resurface limit is 0.2 mm (0.008 in.) based on a height of 121 mm (4.76 in.). Cylinder Head Height Standard (New): 120.95-121.05 mm (4.762-4.766 in.)

Scheme 119

Scheme 120

1. Remove the cylinder head cover (see «CYLINDER HEAD COVER REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
2. Loosen the locknuts and the adjusting screws (A).
3. Remove the rocker shaft bridge mounting bolts, the rocker shaft holder mounting bolts, and the rocker arm assembly. Loosen the rocker shaft bridge mounting bolts and the rocker shaft holder mounting bolts in sequence two turns at a time, to prevent damaging the valves or the rocker arm assembly. When removing the rocker arm assembly, do not remove the rocker shaft bridge mounting bolts and the rocker shaft holder mounting bolts. The bolts will keep the springs and the rocker arms on the shafts.

Scheme 121

Scheme 122

1. Remove the cylinder head cover (see «CYLINDER HEAD COVER REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
2. Loosen the locknuts and the adjusting screws (A).
3. Remove the rocker shaft bridge mounting bolts, the rocker shaft holder mounting bolts, and the rocker arm assembly. Loosen the rocker shaft bridge mounting bolts and the rocker shaft holder mounting bolts in sequence two turns at a time, to prevent damaging the valves or the rocker arm assembly. When removing the rocker arm assembly, do not remove the rocker shaft bridge mounting bolts and the rocker shaft holder mounting bolts. The bolts will keep the rocker arms on the shafts.

Front

Note. Identify parts as they are removed so they can be reinstalled in their original locations. Inspect the rocker shafts and the rocker arms (see ROCKER ARM AND SHAFT INSPECTION ). If reused, the rocker arms must be installed in their original locations. When removing or installing the rocker arm assembly, do not remove the mounting bolts. The bolts will keep the rocker arms, the rocker shaft bridge, and the rocker shaft holder on the shaft. If the rocker shaft cannot be removed or installed by hand, remove or install the rocker shaft by heating the rocker shaft bridge. Prior to reassembling, clean all the parts in solvent, dry them, and apply new engine oil to all contact points and bearing surfaces. When replacing the rocker arm assembly, remove the fastening hardware from the new rocker arm assembly. Never remove any of the circlips that retain the lost motion assemblies in the rocker shaft bridge. The circlips are not available separately, and are factory installed in the rocker shaft bridge. To remove the lost motion assemblies, first remove the rocker shafts and the rocker arms.

Rear

Note. Identify parts as they are removed so they can be reinstalled in their original locations. Inspect the rocker shafts and the rocker arms (see ROCKER ARM AND SHAFT INSPECTION ). If reused, the rocker arms must be installed in their original locations. When removing or installing the rocker arm assembly, do not remove the mounting bolts. The bolts will keep the rocker arms, the rocker shaft bridge, and the rocker shaft holder on the shaft. If the rocker shaft cannot be removed or installed by hand, remove or install the rocker shaft by heating the rocker shaft bridge. Prior to reassembling, clean all the parts in solvent, dry them, and apply new engine oil to all contact points and bearing surfaces. When replacing the rocker arm assembly, remove the fastening hardware from the new rocker arm assembly. Never remove any of the circlips that retain the lost motion assemblies in the rocker shaft bridge. The circlips are not available separately, and are factory installed in the rocker shaft bridge. To remove the lost motion assemblies, first remove the rocker shafts and the rocker arms.

Scheme 123

Scheme 124

Scheme 125

Scheme 126

Scheme 127

Scheme 128

1. Remove the rocker arm assembly (see «ROCKER ARM ASSEMBLY REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
2. Disassemble the rocker arm assembly (see «ROCKER ARM AND SHAFT DISASSEMBLY/REASSEMBLY»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
3. Measure the diameter of the shaft at the first rocker location.
4. Zero the gauge (A) to the shaft diameter.
5. Measure the inside diameter of the rocker arm, and check it for an out-of-round condition. Intake Rocker Arm-to-Shaft Clearance: Standard (New): 0.015-0.046 mm (0.0006-0.0018 in.) Service Limit: 0.046 mm (0.0018 in.) Exhaust Rocker Arm-to-Shaft Clearance: Standard (New): 0.015-0.046 mm (0.0006-0.0018 in.) Service Limit: 0.046 mm (0.0018 in.)
6. Repeat for all rockers and both shafts. If the clearance is over the limit, replace the rocker shaft and all over-tolerance rocker arms. If any intake rocker arm needs replacement, replace all rocker arms in that set (primary and secondary). VTEC Rocker Arms
7. Inspect the rocker arm piston (A). Slide them into the rocker arms. If they do not move smoothly, replace the rocker arm set. NOTE: Apply new engine oil to the rocker arm piston when reassembling. When removing the rocker arm piston, carefully apply air pressure to the oil passage of the rocker arm. INTAKE EXHAUST
8. Reassemble the rocker arm assembly (see «ROCKER ARM AND SHAFT DISASSEMBLY/REASSEMBLY»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
9. Install the rocker arm assembly (see «CAMSHAFT, ROCKER ARM ASSEMBLY, CAMSHAFT SEAL, AND PULLEY INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).

Scheme 129

Scheme 130

Scheme 131

Scheme 132

Scheme 133

Scheme 134

Scheme 135

Scheme 136

Scheme 137

Scheme 138

1. Remove the cylinder head (see «CYLINDER HEAD REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
2. Remove the rocker arm assembly (see «ROCKER ARM ASSEMBLY REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
3. Front: Put the rocker shafts bridge and the rocker shaft holder on the front cylinder head, then tighten the bolts to the specified torque. Specified Torque 8 x 1.25 mm: 22 N.m (2.2 kgf.m, 16 lbf.ft)
4. Rear: Put the rocker shaft bridge and the rocker shaft holder on the rear cylinder head, then tighten the bolts to the specified torque. Specified Torque 8 x 1.25 mm: 22 N.m (2.2 kgf.m, 16 lbf.ft)
5. Seat the camshaft by pushing it toward the rear of the cylinder head.
6. Zero the dial indicator against the end of the camshaft. Push the camshaft back and forth and read the end play. If the end play is beyond the service limit, replace the thrust cover and recheck. If it is still beyond the service limit, replace the camshaft. Camshaft End Play Standard (New): 0.05-0.20 mm (0.002-0.008 in.) Service Limit: 0.20 mm (0.008 in.)
7. Remove the camshaft thrust cover (A), then pull out the camshaft (B).
8. Wipe the camshaft clean, then inspect the lift ramps. Replace the camshaft if any lobes are pitted, scored, or excessively worn.
9. Measure the diameter of each camshaft journal.
10. Zero the gauge to the journal diameter.
11. Clean the camshaft bearing surfaces in the cylinder head. Measure the inside diameter of each camshaft bearing surface, and check for an out-of-round condition. If the camshaft-to-holder clearance is within limits, go to step 13 . If the camshaft-to-holder clearance is beyond the service limit and the camshaft has been replaced, replace the cylinder head. If the camshaft-to-holder clearance is beyond the service limit and the camshaft has not been replaced, go to step 12 . Camshaft-to-Holder Oil Clearance Standard (New): 0.050-0.089 mm (0.0020-0.0035 in.) Service Limit: 0.15 mm (0.006 in.)
12. Check total runout with the camshaft supported on V-blocks. If the total runout of the camshaft is within the service limit, replace the cylinder head. If the total runout is beyond the service limit, replace the camshaft and recheck the oil clearance. If the oil clearance is still out of tolerance, replace the cylinder head. Camshaft Total Runout Standard (New): 0.03 mm (0.001 in.) max. Service Limit: 0.04 mm (0.002 in.)
13. Measure the cam lobe height. Cam Lobe Height Standard (New): CAM LOBE HEIGHT TABLE - INTAKE EXHAUST PRI 34.299 mm (1.3504 in.) 36.734 mm (1.4462 in.) SEC 35.932 mm (1.4146 in.) 37.370 mm (1.4713 in.) FRONT REAR

Valve spring compressor attachment 07757-PJ1010A

Identify the valves and the valve springs as they are removed so that each item can be reinstalled in its original position.

Scheme 139

Scheme 140

Scheme 141

Scheme 142

1. Remove the cylinder head (see «CYLINDER HEAD REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
2. Using an appropriate-sized socket (A) and a plastic mallet (B), lightly tap the spring retainer to loosen the valve cotters.
3. Install the valve spring compressor attachment and the valve spring compressor. Compress the spring and remove the valve cotters.
4. Remove the valve spring compressor and the valve spring compressor attachment, then remove the spring retainer, the valve spring, and the valve.
5. Install the valve guide seal remover (A).
6. Remove the valve seal.
7. Remove the valve spring seat.

Scheme 143

1. Remove the valves (see «VALVE, SPRING, AND VALVE SEAL REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
2. Measure the valve in these areas. Intake Valve Dimensions A Standard (New): 35.90-36.01 mm (1.413-1.421 in.) B Standard (New): 116.55-117.15 mm (4.589-4.612 in.) C Standard (New): 5.485-5.495 mm (0.2159-0.2163 in.) C Service Limit: 5.455 mm (0.2148 in.) Exhaust Valve Dimensions A Standard (New): 29.85-30.15 mm (1.175-1.187 in.) B Standard (New): 113.90-114.50 mm (4.484-4.508 in.) C Standard (New): 5.450-5.460 mm (0.2146-0.2150 in.) C Service Limit: 5.420 mm (0.2134 in.)

Scheme 144

1. Remove the valves (see «VALVE, SPRING, AND VALVE SEAL REMOVAL»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
2. Subtract the O.D. of the valve stem, measured with a micrometer, from the I.D. of the valve guide, measured with an inside micrometer or a ball gauge. Take the measurements in three places along the valve stem and three places inside the valve guide. The difference between the largest guide measurement and the smallest stem measurement should not exceed the service limit. Intake Valve Stem-to-Guide Clearance Standard (New): 0.020-0.045 mm (0.0008-0.0018 in.) Service Limit: 0.08 mm (0.003 in.) Exhaust Valve Stem-to-Guide Clearance Standard (New): 0.055-0.080 mm (0.0022-0.0031 in.) Service Limit: 0.11 mm (0.004 in.)

1. Valve guide driver, 5.5 mm 07742-0010100
2. Valve guide reamer, 5.5 mm 07HAH-PJ7A100

Scheme 145

Scheme 146

Scheme 147

Scheme 148

Scheme 149

1. Inspect the valve stem-to-guide clearance (see «VALVE INSPECTION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
2. As illustrated, use a commercially available air-impact valve guide driver (A) modified to fit the diameter of the valve guides. In most cases, the same procedure can be done using the valve guide driver and a conventional hammer.
3. Select the proper replacement guides, and chill them in the freezer section of a refrigerator for at least an hour.
4. Use a hot plate or oven to evenly heat the cylinder head to 300°F (150°C). Monitor the temperature with a cooking thermometer. Do not get the head hotter than 300°F (150°C); excessive heat may loosen the valve seats.
5. Working from the camshaft side, use the driver and an air hammer to drive the guide about 2 mm (0.1 in.) towards the combustion chamber. This will knock off some of the carbon and make removal easier. Hold the air hammer directly in line with the valve guide to prevent damaging the driver. Wear safety goggles or a face shield.
6. Turn the head over, and drive the guide out toward the camshaft side of the head.
7. If a valve guide still won't move, drill it out with a 8 mm (5/16 in.) bit, then try again. NOTE: Drill guides only in extreme cases; you could damage the cylinder head if the guide breaks.
8. Remove the new guide(s) from the freezer, one at a time, as you need them.
9. Apply a thin coat of new engine oil to the outside of the new valve guide. Install the guide from the camshaft side of the head; use the valve guide driver to drive the guide to the specified installed height (A) of the guide (B). If you have all 12 guides to do, you may have to reheat the head. Valve Guide Installed Height Intake: 21.20-22.20 mm (0.835-0.874 in.) Exhaust: 20.60-21.60 mm (0.811 -0.850 in.)
10. Coat both the reamer and the valve guide with cutting oil.
11. Rotate the reamer clockwise the full length of the valve guide bore.
12. Continue to rotate the reamer clockwise while removing it from the bore.
13. Thoroughly wash the guide in detergent and water to remove any cutting residue.
14. Check the clearance with a valve (see «VALVE INSPECTION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ). Verify that a valve slides in the intake and exhaust valve guides without sticking.
15. Inspect the valve seating. If necessary renew the valve seat using a valve seat cutter (see «VALVE SEAT RECONDITIONING»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).

Scheme 150

Scheme 151

Scheme 152

Scheme 153

1. Inspect valve stem-to-guide clearance (see «VALVE INSPECTION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ). If the valve guides are worn, replace them (see «VALVE GUIDE REPLACEMENT»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ) before cutting the valve seats.
2. Renew the valve seats in the cylinder head using a valve seat cutter.
3. Carefully cut a 45° seat, removing only enough material to ensure a smooth and concentric seat.
4. Bevel the upper edge of the seat with the 30° cutter and the lower edge of the seat with the 67.5° cutter (intake seat) or the 60° cutter (exhaust seat). Check the width of the seat and adjust accordingly.
5. Make one more very light pass with the 45° cutter to remove any possible burrs caused by the other cutters. Valve Seat Width Standard (New): 1.25-1.55 mm (0.049-0.061 in.) Service Limit: 2.00 mm (0.079 in.)
6. After resurfacing the seat, inspect it for even valve seating. Apply Prussian Blue compound (A) to the valve face. Insert the valve in its original location in the head, then lift it and snap it closed against the seat several times.
7. The actual valve seating surface (B), as shown by the blue compound, should be centered on the seat. If it is too high (closer to the valve stem), you must make a second cut with the 67.5° cutter (intake seat) or the 60° cutter (exhaust seat) to move it down, then one more cut with the 45° cutter to restore seat width. If it is too low (closer to the valve edge), you must make a second cut with the 30° cutter to move it up, then one more cut with the 45° cutter to restore seat width. NOTE: The final cut should always be made with the 45° cutter.
8. Insert the intake and exhaust valves in the head, and measure the valve stem installed height (A). Intake Valve Stem Installed Height Standard (New): 46.75-47.55 mm (1.841-1.872 in.) Service Limit: 47.80 mm (1.882 in.) Exhaust Valve Stem Installed Height Standard (New): 46.68-47.48 mm (1.838-1.869 in.) Service Limit: 47.73 mm (1.879 in.)
9. If the valve stem installed height is over the service limit, replace the valve and recheck. If it is still over the service limit, replace the cylinder head; the valve seat in the head is too deep.

1. Stem seal driver 07PAD-0010000
2. Valve spring compressor attachment 07757-PJ1010A

Scheme 154

Scheme 155

Scheme 156

1. Coat the valve stems with new engine oil. Install the valves in the valve guides.
2. Check that the valves move up and down smoothly.
3. Install the spring seats on the cylinder head.
4. Install the new valve seals (A) using the 5.5 mm side of the stem seal driver (B). NOTE: Exhaust valve seals (C) have a black spring (D) and intake valve seals (E) have a white or silver spring (F). They are not interchangeable.
5. Install the valve spring and the spring retainer. Place the end of the valve spring with closely wound coils toward the cylinder head.
6. Install the valve spring compressor attachment and the valve spring compressor. Compress the spring and install the valve cotters.
7. Remove the valve spring compressor and the valve spring compressor attachment.
8. Lightly tap the end of each valve stem two or three times with a plastic mallet (A) to ensure proper seating of the valve and valve cotters. Tap the valve stem only along its axis so you do not bend the stem.

Scheme 157

Scheme 158

Scheme 159

Scheme 160

Scheme 161

1. Loosen the valve adjusting screws.
2. Apply a light coat of new engine oil around the camshaft oil seal.
3. Gently tap the new camshaft oil seal (A) into the cylinder head. Tap the camshaft oil seal in squarely. Install the oil seal about 0.5-1.5 mm (0.02-0.06 in.) below the surface of the cylinder head.
4. Insert the camshaft (B) into the cylinder head, then install the camshaft thrust cover (C). Always use a new O-ring (D). Apply new engine oil to the camshaft journals and lobes.
5. Check that the oil seal lips are not distorted.
6. Install the solid dowel pin (E).
7. If the rocker arm assembly is disassembled, reassemble the rocker arm assembly (see «ROCKER ARM AND SHAFT DISASSEMBLY/REASSEMBLY»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
8. Remove all of the old liquid gasket from the rocker shaft holder and the cylinder head.
9. Apply liquid gasket (P/N 08717-0004,08718-0001, 08718-0003, or 08718-0009) to the rocker shaft holder mating surface of the cylinder head. Install the component within 5 minutes of applying the liquid gasket. NOTE: Apply liquid gasket about 2.5 mm (0.098 in.) diameter bead along the broken line (A). If you apply liquid gasket P/N 08718-0012, the component must be installed within 4 minutes. If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply the new liquid gasket.
10. Set the rocker arm assembly in place, and loosely install the bolts. Make sure that the rocker arms are properly positioned on the valve stems. NOTE: Wait at least 30 minutes before filling the engine with oil. Do not run the engine for at least 3 hours after installing the rocker arm assembly.
11. Tighten each bolt two turns at a time in the sequence shown to ensure that the rockers do not bind on the valves. Specified Torque 8 x 1.25 mm: 22 N.m (2.2 kgf.m, 16 lbf.ft)
12. Install the injector base (A). Always use a new gasket (B).
13. Apply new engine oil to the threads of the camshaft pulley mounting bolt (A). Install the back cover (B), then install the camshaft pulley (C).
14. Set the camshaft pulleys to top dead center (TDC) before bolting them onto the engine block (see step 6 in «CYLINDER HEAD INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).

Scheme 162

Scheme 163

Scheme 164

Scheme 165

Scheme 166

1. Loosen the valve adjusting screws.
2. Apply a light coat of new engine oil around the camshaft oil seal.
3. Gently tap the new camshaft oil seal (A) into the cylinder head. Tap the camshaft oil seal in squarely. Install the oil seal about 0.5-1.5 mm (0.02-0.06 in.) below the surface of the cylinder head.
4. Insert the camshaft (B) into the cylinder head, then install the camshaft thrust cover (C). Always use a new O-ring (D). Apply new engine oil to the camshaft journals and lobes.
5. Check that the oil seal lips are not distorted.
6. Install the hollow dowel pin (E).
7. If the rocker arm assembly is disassembled, reassemble the rocker arm assembly (see «REAR»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
8. Remove all of the old liquid gasket from the rocker shaft holder and the cylinder head.
9. Apply liquid gasket (P/N 08717-0004, 08718-0001, 08718-0003, or 08718-0009) to the rocker shaft holder mating surface of the cylinder head. Install the component within 5 minutes of applying the liquid gasket. NOTE: Apply liquid gasket about 2.5 mm (0.098 in.) diameter bead along the broken line (A). If you apply liquid gasket P/N 08718-0012, the component must be installed within 4 minutes. If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply new liquid gasket.
10. Set the rocker arm assembly in place, and loosely install the bolts. Make sure that the rocker arms are properly positioned on the valve stems. NOTE: Wait at least 30 minutes before filling the engine with oil. Do not run the engine for at least 3 hours after installing the rocker arm assembly.
11. Tighten each bolt two turns at a time in the sequence shown below to ensure that the rockers do not bind on the valves. Specified Torque 8 x 1.25 mm: 22 N.m (2.2 kgf.m, 16 lbf.ft)
12. Install the injector base (A). Always use a new gasket (B).
13. Apply new engine oil to the threads of the camshaft pulley mounting bolt (A). Install the back cover (B), then install the camshaft pulley (C).
14. Set the camshaft pulleys to TDC before bolting them onto the engine block (see step 6 «CYLINDER HEAD INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).

Scheme 167

Scheme 168

Scheme 169

Scheme 170

Scheme 171

Scheme 172

Scheme 173

Scheme 174

Scheme 175

Scheme 176

Scheme 177

Scheme 178

1. Clean the cylinder head and the engine block surface.
2. Clean and install the oil control orifices (A) with new O-rings (B).
3. Install the dowel pins (C) and the new cylinder head gaskets (D).
4. Clean the timing belt pulleys, the timing belt guide plate, and the upper and lower covers.
5. Set the timing belt drive pulley to top dead center (TDC) by aligning the TDC mark (A) on the tooth of the timing belt drive pulley with the pointer (B) on the oil pump.
6. Set the camshaft pulleys to TDC by aligning the TDC marks (A) on the camshaft pulleys with the pointers (B) on the back covers. FRONT REAR
7. Install the cylinder heads on the engine block.
8. Measure the diameter of each cylinder head bolt at point A and point B.
9. If either diameter is less than 10.6 mm (0.42 in.), replace the cylinder head bolt.
10. Apply new engine oil to the threads and under the bolt heads of all cylinder head bolts.
11. Tighten the cylinder head bolts in sequence to 29 N.m (3.0 kgf.m, 22 lbf.ft) using a beam-type torque wrench. When using a preset-type torque wrench, be sure to torque slowly and do not overtighten. If a bolt makes any noise while you are torquing it, loosen the bolt and retighten it from the first step. FRONT REAR
12. After torquing, tighten all cylinder head bolts in two steps (90° per step) using the sequence shown in step 11 . If you are using a new cylinder head bolt, tighten the bolt an extra 90°. NOTE: Remove the cylinder head bolt if you tightened it beyond the specified angle, and go back to step 8 of the procedure. Do not loosen it back to the specified angle.
13. Install the timing belt (see «TIMING BELT INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head__timing-belt-installation) ).
14. Adjust the valve clearance (see «VALVE CLEARANCE ADJUSTMENT»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head__valve-clearance-adjustment) ).
15. Install the water passage (see «WATER PASSAGE REPLACEMENT»(/acura/rl/ii-2008-2012/remont/cooling-system-mechanical/#cooling-system) ).
16. Install the fuel rails (see «INJECTOR REPLACEMENT»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#pgm-fi-system) ).
17. Install the connector bracket to the front cylinder head.
18. Install the engine mount control solenoid valve bracket and the harness clamp bracket from the rear cylinder head.
19. Connect the fuel feed hose (A) (see «FUEL LINE/QUICK-CONNECT FITTING INSTALLATION»(/acura/rl/ii-2008-2012/remont/fuel-system/#fuel-supply-system__fuel-linequick-connect-fitting-installation) ), then install the quick-connect fitting cover (B).
20. Install the front warm up three way catalytic converter (front WU-TWC) (see «FRONT»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#catalytic-converter-system) ) and the rear warm up three way catalytic converter (rear WU-TWC) (see «REAR»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#catalytic-converter-system) ).
21. Connect the following engine wire harness connectors, and install the wire harness clamps to the cylinder head: Six injector connectors Engine coolant temperature (ECT) sensor 1 connector Oil pressure switch connector Camshaft position (CMP) sensor connector Front and rear air fuel ratio (A/F) sensor connectors Front and rear secondary heated oxygen sensor (secondary HO2S) connectors
22. Install the cylinder head covers (see «CYLINDER HEAD COVER INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) ).
23. Install the six ignition coils (see «IGNITION COIL REMOVAL/INSTALLATION»(/acura/rl/ii-2008-2012/remont/ignition-system/#ignition-system) ).
24. Install the intake manifold (see «INSTALLATION»(/acura/rl/ii-2008-2012/remont/mechanical/#intake-manifold-and-exhaust-system) ).
25. Install the alternator (see «INSTALLATION»(/acura/rl/ii-2008-2012/remont/charging-system/#charging-system) ).
26. Install the power steering (P/S) pump (A) and tighten the bolt (B) securing the P/S hose bracket.
27. Install the drive belt (see «DRIVE BELT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/charging-system/#charging-system) ).
28. Do the battery terminal reconnection procedure (see «RECONNECTION»(/acura/rl/ii-2008-2012/remont/body-electrical/#battery__reconnection) ).
29. After installation, check that all tubes, hoses, and connectors are installed correctly.
30. Inspect for fuel leaks. Turn the ignition switch to ON (II) (do not operate the starter) so the fuel pump runs for about 2 seconds and pressurizes the fuel line. Repeat this operation three times, then check for fuel leakage at any point in the fuel line.
31. Refill the radiator with engine coolant, and bleed the air from the cooling system with the heater valve open (see step 8 in «COOLANT REPLACEMENT»(/acura/rl/ii-2008-2012/remont/cooling-system-mechanical/#cooling-system) ).
32. Do the crankshaft position (CKP) pattern clear/CKP pattern learn procedure (see «CRANK (CKP) PATTERN CLEAR/CRANK (CKP) PATTERN LEARN»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems) ).
33. Inspect the idle speed (see «IDLE SPEED INSPECTION»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#idle-control-system__idle-speed-inspection) ).
34. Inspect the ignition timing (see «IGNITION TIMING INSPECTION»(/acura/rl/ii-2008-2012/remont/ignition-system/#ignition-system) ).
35. Check for fluid leaks.

Ball joint remover/installer 07GAF-SD40330

Scheme 179

1. Dry the camshaft oil seal housing.
2. Apply a light coat of multipurpose grease to the lip of the camshaft oil seal.
3. Using the ball joint remover/installer (A), a washer (B), and a 12 x 75 x 1.25 mm bolt (C), press in the camshaft oil seal (D) about 0.5-1.5 mm (0.02-0.06 in.) below the surface of the cylinder head.

Sealing Bolt Installation

Note. When installing the sealing bolts (A), always use a new washer (B).

FRONT

Scheme 180

REAR

Scheme 181

See also:
• GENERAL TROUBLESHOOTING INFORMATION
• DLC CIRCUIT TROUBLESHOOTING
• IGNITION COIL REMOVAL/INSTALLATION
• PCM RESET
• UPPER GRILLE REPLACEMENT
• DRIVE BELT REPLACEMENT
• CKP SENSOR REPLACEMENT
• REMOVAL
• FUEL PRESSURE RELIEVING
• DISCONNECTION
• COOLANT REPLACEMENT
• FRONT
• FUEL LINE/QUICK-CONNECT FITTING REMOVAL
• REMOVAL
• EGR VALVE REPLACEMENT
• INSTALLATION
• FUEL LINE/QUICK-CONNECT FITTING INSTALLATION
• RECONNECTION
• IDLE SPEED INSPECTION
• CYLINDER HEAD COVER REMOVAL
• VALVE CLEARANCE ADJUSTMENT
• TIMING BELT REPLACEMENT
• TIMING BELT INSTALLATION