Cylinder Head: Component Locations Acura RL II facelift

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»(ref-348523-S22301152652009112400000) ).
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»(ref-348523-S33499703002009112400000) ).
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»(ref-348523-S41827012912009112400000) ).
16. Install the six spark plugs.

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»(ref-348521-S04572541762009112400000) ).
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»(ref-348521-S04572541762009112400000) ).
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»(ref-348530-S35500373142009112400000) ).
2. Remove the drive belt (see «DRIVE BELT REPLACEMENT»(ref-348521-S04572541762009112400000) ).
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»(ref-348530-S35500373142009112400000) ).
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»(ref-348521-S04572541762009112400000) ).
7. Remove the drive belt auto-tensioner (see «DRIVE BELT AUTO-TENSIONER REPLACEMENT»(ref-348521-S10569529382009112400000) ).
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»(ref-348523-S34854561092009112400000) ).
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.

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.

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1. Remove the cylinder head (see «CYLINDER HEAD REMOVAL»(ref-348523-S29753340842009112400000) ).
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.

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1. Remove the valves (see «VALVE, SPRING, AND VALVE SEAL REMOVAL»(ref-348523-S03339084072009112400000) ).
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.)

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1. Remove the valves (see «VALVE, SPRING, AND VALVE SEAL REMOVAL»(ref-348523-S03339084072009112400000) ).
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

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1. Inspect the valve stem-to-guide clearance (see «VALVE INSPECTION»(ref-348523-S22420612752009112400000) ).
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»(ref-348523-S22420612752009112400000) ). 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»(ref-348523-S10614861582009112400000) ).

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1. Inspect valve stem-to-guide clearance (see «VALVE INSPECTION»(ref-348523-S22420612752009112400000) ). If the valve guides are worn, replace them (see «VALVE GUIDE REPLACEMENT»(ref-348523-S36479534962009112400000) ) 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

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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.

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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»(ref-348523-S23741944102009112400000) ).
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»(ref-348523-S27264050602009112400000) ).

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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»(ref-348523-S25041255862009112400000) ).
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»(ref-348523-S27264050602009112400000) ).

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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»(ref-348523-S15769000432009112400000) ).
14. Adjust the valve clearance (see «VALVE CLEARANCE ADJUSTMENT»(ref-348523-S33499703002009112400000) ).
15. Install the water passage (see «WATER PASSAGE REPLACEMENT»(ref-348514-S40976415582009112400000) ).
16. Install the fuel rails (see «INJECTOR REPLACEMENT»(ref-348508-S24026558562009112400000) ).
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»(ref-348518-S19422747992009112400000) ), then install the quick-connect fitting cover (B).
20. Install the front warm up three way catalytic converter (front WU-TWC) (see «FRONT»(ref-348538-S27118630862009112400000) ) and the rear warm up three way catalytic converter (rear WU-TWC) (see «REAR»(ref-348538-S17235402692009112400000) ).
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»(ref-348523-S41827012912009112400000) ).
23. Install the six ignition coils (see «IGNITION COIL REMOVAL/INSTALLATION»(ref-348522-S10282976792009112400000) ).
24. Install the intake manifold (see «INSTALLATION»(ref-348517-S05983274932009112400000) ).
25. Install the alternator (see «INSTALLATION»(ref-348521-S31664434452009112400000) ).
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»(ref-348521-S04572541762009112400000) ).
28. Do the battery terminal reconnection procedure (see «RECONNECTION»(ref-348526-S38362834972009112400000) ).
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»(ref-348514-S41716057472009112400000) ).
32. Do the crankshaft position (CKP) pattern clear/CKP pattern learn procedure (see «CRANK (CKP) PATTERN CLEAR/CRANK (CKP) PATTERN LEARN»(ref-348507-S16762437512009112400000) ).
33. Inspect the idle speed (see «IDLE SPEED INSPECTION»(ref-348529-S07973083192009112400000) ).
34. Inspect the ignition timing (see «IGNITION TIMING INSPECTION»(ref-348522-S00903122632009112400000) ).
35. Check for fluid leaks.

Ball joint remover/installer 07GAF-SD40330

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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.