Engine Mechanical: Removal & Installation Infiniti M45 II

PRECAUTIONS FOR REMOVAL AND DISASSEMBLY

1. When instructed to use special service tools, use the specified tools. Always be careful to work safely, avoid forceful or uninstructed operations.
2. Exercise maximum care to avoid damage to mating or sliding surfaces.
3. Cover openings of engine system with tape or the equivalent, if necessary, to seal out foreign materials.
4. Mark and arrange disassembly parts in an organized way for easy troubleshooting and assembly.
5. When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be used where noted in the step.

PRECAUTIONS FOR ASSEMBLY AND INSTALLATION

1. Use torque wrench to tighten bolts or nuts to specification.
2. When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is specified, do exactly as specified.
3. Replace with new gasket, packing, oil seal or O-ring.
4. Thoroughly wash, clean, and air-blow each part. Carefully check oil or coolant passages for any restriction and blockage.
5. Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust. Before assembly, oil sliding surfaces well.
6. Release air within route when refilling after draining coolant.
7. After repairing, start engine and increase engine speed to check coolant, fuel, oil, and exhaust systems for leakage.

Removal

1. Remove clips on back with clip driver for front air guide. CAUTION: Do not damage or scratch cover when installing or removing.
2. Major parts and inspection points under each cover are as follows; (numbered as in illustration)

1. Upper side of engine assembly, power steering reservoir tank, cooling fan reservoir tank
2. Relay
3. Cooling fan fluid cooler, power steering fluid cooling tube
4. Engine assembly front side, drive belts, cooling fan

Installation

1. Install in the reverse order of removal.

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1. Remove air duct (inlet) when inspecting drive belt for alternator, water pump and A/C compressor.
2. Remove engine undercover (with power tool) when inspecting power steering oil pump belt.
3. Make sure that indicator (single line notch) of each auto tensioner is within the allowable working range (between three line notches). NOTE: Check the auto tensioner indication when engine is cold. When the new drive belt is installed, the range should be A. The indicator notch is located on the moving side of auto tensioner for alternator, water pump and A/C compressor belt, while it is found on the fixed side for power steering oil pump belt.
4. Visually check entire belt for wear, damage or cracks.
5. If the indicator is out of allowable working range or belt is damaged, replace the belt.

Install in the reverse order of removal paying attention to the following.

1. Unlock auto tensioner pulley arm to give tension to belt.
2. Rotate crankshaft pulley several turns clockwise to equalize belt tension between pulleys.
3. Check that belt tension is within the allowable working range, using indicator notch on auto tensioner. Refer to «CHECKING DRIVE BELTS»(ref-159010-S03876560872005032300000) .

Scheme 121

1. Remove air duct (inlet). Refer to «AIR CLEANER AND AIR DUCT»(ref-159010-S06177113492005032300000) .
2. Remove engine undercover (with power tool).
3. Remove drive belts. Refer to «REMOVAL AND INSTALLATION»(ref-159010-S30755208842005032300000) . Keep auto tensioner pulley arm locked after belt is removed.
4. Remove auto tensioner and idler pulley with power tool. Keep auto tensioner pulley arm locked to install or remove auto tensioner.

Install in the reverse order of removal.

Scheme 122

1. Remove engine cover (with power tool). Refer to «ENGINE ROOM COVER»(ref-159010-S24478988662005032300000) .
2. Disconnect harness connector from mass air flow sensor.
3. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly disconnecting their joints. Add marks as necessary for easier installation.
4. Remove mass air flow sensor from air cleaner case. CAUTION: Handle mass air flow sensor with following cares. Do not shock it. Do not disassemble it. Do not touch its sensor.

Note the following, and install in the reverse order of removal.

1. Align marks. Attach each joint. Screw clamps firmly.

1. Unfasten two clips and lift up air cleaner filter along with holder.
2. Remove air cleaner filter from holder.

Install in the reverse order of removal.

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1. Remove engine cover (with power tool). Refer to «REMOVAL AND INSTALLATION»(ref-159010-S38119701512005032300000) .
2. Release fuel pressure. Refer to «FUEL PRESSURE RELEASE»(ref-173766-S34645699222005032200000) .
3. Remove air cleaner case and air duct assembly. Refer to «REMOVAL AND INSTALLATION»(ref-159010-S29934989162005032300000) .
4. Drain engine coolant when engine is cooled. Refer to «CHANGING ENGINE COOLANT»(ref-172473-S23598045732005022800000) .
5. Disconnect fuel tube quick connector on engine side. Refer to «FUEL INJECTOR AND FUEL TUBE»(ref-159010-S06407600942005032300000) .
6. Remove accelerator wire from throttle drum.
7. Move cooling fan fluid reservoir tank. Refer to «COOLING FAN»(ref-172473-S08022088772005022800000) .
8. Remove or disconnect intake manifold upper, wiring harnesses, brackets, vacuum hose, vacuum gallery and PCV hose and tube.
9. Remove electric throttle control actuator and intake manifold adapter loosening fixing bolts diagonally. CAUTION: Handle carefully to avoid any shock to the electric throttle control actuator. Do not disassemble.
10. Disconnect water hoses.
11. Loosen bolts in reverse order of illustration to remove intake manifold upper with power tool.
12. Remove fuel injectors and fuel tube (left and right). Refer to «REMOVAL AND INSTALLATION»(ref-159010-S41367070862005032300000) .
13. Loosen bolts in reverse order of illustration to remove intake manifold lower with power tool. CAUTION: Cover engine openings to avoid entry of foreign materials.
14. Remove intake manifold gaskets.

Scheme 126

1. Using straightedge and feeler gauge, inspect surface distortion of intake manifold lower and intake manifold upper. Standard: 0.1 mm (0.004 in)
2. If it exceeds the limit, replace intake manifold lower or intake manifold upper.

1. Note the following, and install in the reverse order of removal.

Scheme 127

1. Tighten in numerical order as shown in the figure. NOTE: No. 7 and 8 have longer bolt length than others.

Scheme 128

1. Tighten in numerical order as shown in the figure. NOTE: No. 4 to 7 have longer bolt length than others.

Installation of Electric Throttle Control Actuator

1. Install intake manifold adapter gasket and electric throttle control actuator gasket so that three protrusions for installation identification do not face downward.
2. Tighten fixing bolts of electric throttle control actuator equally and diagonally in several steps.
3. After installation perform procedure in «INSPECTION AFTER INSTALLATION»(ref-159010-S14919917422005032300000) .

Note the following, and install in the reverse order of removal.

Installation of Heated Oxygen Sensor

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1. Remove front tire. Refer to «ROAD WHEEL TIRE ASSEMBLY»(ref-180675-S26589505432005072800000) .
2. Remove hood assembly. Refer to «HOOD»(ref-180678-S13249416602005072800000) .
3. Remove engine cover. Refer to «ENGINE ROOM COVER»(ref-159010-S24478988662005032300000) .
4. Remove engine undercover with power tool.
5. Drain engine oil. Refer to «CHANGING ENGINE OIL»(ref-172635-S33860779282005030200000) .
6. Remove drive belts. Refer to «REMOVAL AND INSTALLATION»(ref-159010-S30755208842005032300000) .
7. Remove auto tensioner of power steering oil pump belt. Refer to «DRIVE BELT AUTO TENSIONER AND IDLER PULLEY»(ref-159010-S18606836252005032300000) .
8. Move power steering oil pump and remove power steering oil pump bracket. Refer to «POWER STEERING OIL PUMP»(ref-172964-S26607102902005030800000) .
9. Remove oil filter. Refer to «REMOVAL AND INSTALLATION»(ref-172635-S14591721852005030200000) .
10. Remove A/C compressor fitting bolts, and install A/C compressor temporarily on vehicle side with ropes or equivalent. Refer to «REMOVAL AND INSTALLATION OF COMPRESSOR»(ref-171295-S41189065182005020200000) .
11. Disconnect harness and wires of lower side of oil pan from oil pan.
12. Remove crankshaft position sensor (POS) from transmission. CAUTION: Do not drop or shock it. Do not disassemble it. Do not let steel powders contact magnetic parts of sensor tips. Do not leave where magnetically effected.
13. Install engine slinger and hang engine assembly to secure position. Refer to «REMOVAL AND INSTALLATION»(ref-159010-S32061018882005032300000) .
14. Remove front suspension member (with power tool). Refer to «FRONT»(ref-166061) .
15. Remove oil pan as follows: Remove rear plate cover. Remove transmission joint bolts (M12:4 bolts) which pierce oil pan. Refer to «REMOVAL AND INSTALLATION»(ref-170821-S39496478632005011800000) . Loosen oil pan bolts with power tool in reverse order of illustration to remove. NOTE: Exclude No. 11 and 17 in removal. Insert the seal cutter (SST) between oil pan and cylinder block. Slide seal cutter by tapping on the side of the seal cutter with a hammer. Remove oil pan. CAUTION: Be careful not to damage mating surface.
16. Remove oil strainer.

1. Remove engine cover (with power tool). Refer to «REMOVAL AND INSTALLATION»(ref-159010-S38119701512005032300000) .
2. Move heater hose and its peripheral parts aside. (No. 7 cylinder)
3. Disconnect harness connector from ignition coil.
4. Remove ignition coil. CAUTION: Do not shock it.

1. Install in the reverse order of removal.

Scheme 132

1. Remove ignition coil. Refer to «REMOVAL AND INSTALLATION»(ref-159010-S25475195982005032300000) .
2. Remove spark plug with the spark plug wrench (commercial service tool).

Install in the reverse order of removal.

Spark plug: 24.6 N.m (2.5 kg-m, 18 ft-lb)

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1. Remove engine cover with power tool. Refer to «ENGINE ROOM COVER»(ref-159010-S24478988662005032300000) .
2. Release fuel pressure. Refer to «FUEL PRESSURE RELEASE»(ref-173766-S34645699222005032200000) .
3. Disconnect fuel feed hose on engine side as the following: (Excepting to confirm whether or not there is quick connector cap, perform same procedure for the side of centralized under-floor piping as well.) Remove quick connector cap from quick connector connection. (engine side only) Disconnect quick connector from fuel tube (fuel feed damper) as the following: CAUTION: Disconnect quick connector by using the quick connector release (SST: J-45488), not by picking out retainer tabs (centralized under-floor piping side). With the sleeve side of the quick connector release facing quick connector, install the quick connector release onto fuel tube. Insert the quick connector release into quick connector until sleeve contacts and goes no further. Hold the quick connector release on that position. CAUTION: Inserting the quick connector release hard will not disconnect quick connector. Hold the quick connector release where it contacts and goes no further. Draw and pull out quick connector straight from fuel tube. CAUTION: Pull quick connector holding "A" position as shown in the figure. Do not pull with lateral force applied. O-ring inside quick connector may be damaged. Prepare container and cloth beforehand as fuel will leak out. Avoid fire and sparks. Keep parts away from heat source. Especially, be careful when welding is performed around them. Do not expose parts to battery electrolyte or other acids. Do not bend or twist connection between quick connector and fuel feed hose during installation/removal. To keep clean the connecting portion and to avoid damage and foreign materials, cover them completely with plastic bags or something similar.
4. Disconnect fuel damper and fuel hose assembly from fuel tubes (right and left). CAUTION: While hoses are disconnected, plug them to prevent fuel from draining, Do not separate fuel damper and fuel hose assembly.
5. Remove intake manifold upper with power tool. Refer to «REMOVAL AND INSTALLATION»(ref-159010-S05117784122005032300000) .
6. Disconnect harness connector from fuel injector.
7. Loosen mounting bolts "2" to "1" as shown in the figure, and remove fuel tube and fuel injector assembly. CAUTION: Do not tilt it, or remaining fuel in pipes may flow out from pipes.
8. Remove spacers on intake manifold lower.
9. Remove fuel injector from fuel tube as the following: Open and remove clip. Remove fuel injector from fuel tube by pulling straight. CAUTION: Be careful with remaining fuel that may go out from fuel tube. Be careful not to damage injector nozzles during removal. Do not bump or drop fuel injectors. Do not disassemble fuel injectors.
10. Remove fuel damper (right) and fuel feed damper.

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1. Install fuel damper (right) and fuel feed damper. When handling O-rings, be careful of the following: CAUTION: Handle O-ring with bare hands. Do not wear gloves. Lubricate O-ring with new engine oil. Do not clean O-ring with solvent. Make sure that O-ring and its mating part are free of foreign material. When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to twist or stretch O-ring. If O-ring was stretched while it was being attached, do not insert it quickly into fuel tube. Insert O-ring straight into fuel tube. Do not de-center or twist it. Insert fuel damper (right) and fuel feed damper straight into fuel tube (right). Tighten mounting bolts evenly in turn. After tightening mounting bolts, make sure that there is no gap between flange and fuel tube (right).
2. Install O-rings to fuel injector paying attention to the items below. CAUTION: Upper and lower O-ring are different. Be careful not to confuse them. Fuel tube side: Black Nozzle side: Green Handle O-ring with bare hands. Never wear gloves. Lubricate O-ring with new engine oil. Do not clean O-ring with solvent. Make sure that O-ring and its mating part are free of foreign material. When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to twist or stretch O-ring. If O-ring was stretch while it was being attached, do not insert it quickly into fuel tube. Insert O-ring straight into fuel tube. Do not de-center or twist it.
3. Install fuel injector to fuel tube as the following: Insert clip into clip mounting groove on fuel injector. Insert clip so that lug "A" of fuel injector matches notch "A" of the clip. CAUTION: Do not reuse clip. Replace it with a new one. Be careful to keep clip from interfering with O-ring. If interference occurs, replace O-ring. Insert fuel injector into fuel tube with clip attached. Insert it while matching it to the axial center. Insert fuel injector so that lug "B" of fuel tube matches notch "B" of the clip. Make sure that fuel tube flange is securely fixed in flange fixing groove on clip. Make sure that installation is complete by checking that fuel injector does not rotate or come off. Make sure that protrusions of fuel injectors are aligned with cutouts of clips after installation.
4. Install spacers on intake manifold lower.
5. Install fuel tube and fuel injector assembly to intake manifold. CAUTION: Be careful not to let tip of injector nozzle come in contact with other parts. Tighten mounting bolts "1" to "2" as shown in the figure and in two steps. 1st step: 10.1 N.m (1.0 kg-m, 7 ft-lb) 2nd step: 23.5 N.m (2.4 kg-m, 17 ft-lb)
6. Connect fuel feed hose on engine side as the following: (Excepting to confirm whether or not there is quick connector cap, perform same procedure for the side of centralized under-floor piping as well.) Make sure no foreign substances are deposited in and around fuel tube (fuel feed damper) and quick connector, and no damage on them. Thinly apply new engine oil around fuel tube from tip end to spool end. Align center to insert quick connector straightly into fuel tube. Insert fuel tube into quick connector until top spool is completely inside quick connector, and 2nd level spool exposes right below quick connector. CAUTION: Hold "A" position as shown in the figure when inserting fuel tube into quick connector. Carefully align center to avoid inclined insertion to prevent damage to O-ring inside quick connector. Insert until you hear a "click" sound and actually feel the engagement. To avoid mis-identification of engagement with a similar sound, be sure to perform the next step. Pull quick connector by hand holding "A" position. Make sure it is completely engaged (connected) so that it does not come out from fuel tube. Install quick connector cap on quick connector connection. (on engine side only). Install fuel feed hose to hose clamps.
7. Install in the reverse order of removal.

1. Refer to the following for removal works related to left-bank. Remove engine cover (with power tool). Refer to «REMOVAL AND INSTALLATION»(ref-159010-S38119701512005032300000) . Remove air duct and air cleaner case assembly. Refer to «REMOVAL AND INSTALLATION»(ref-159010-S29934989162005032300000) . Remove bracket (installation parts for No. 6 camshaft bracket). Refer to «CAMSHAFT»(ref-159010-S00688698492005032300000) . Move harness on upper rocker cover and its peripheral aside. Remove ignition coil. Refer to «REMOVAL AND INSTALLATION»(ref-159010-S25475195982005032300000) . Remove PCV valve hose from PCV valve.
2. Refer to the following for removal works related to right-bank. Remove engine cover (with power tool). Refer to «REMOVAL AND INSTALLATION»(ref-159010-S38119701512005032300000) . Move harness on upper rocker cover and its peripheral aside. Remove ignition coil «REMOVAL AND INSTALLATION»(ref-159010-S25475195982005032300000) . Remove PCV valve hose from PCV valve.
3. Loosen bolts in reverse order shown in the figure (with power tool). CAUTION: Do not hold oil filler neck (right bank) not to damage it.

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1. Apply liquid gasket to joint part of cylinder head and camshaft bracket as follows: NOTE: Illustration shows an example of left-bank side (zoomed in shows No. 1 camshaft bracket). Apply only to No. 1 camshaft bracket for right-bank side. Refer to illustration "a" to apply liquid gasket to joint part of No. 1 and No. 6 camshaft bracket and cylinder head. Refer to illustration "b" to apply liquid gasket in 90 degrees to illustration "a". Use Genuine RTV Silicone Sealant or equivalent. Refer to «RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS»(ref-180766-S18255399172005072900000) .
2. Install rocker cover. Check if rocker cover gasket is not dropped from installation groove of rocker cover.
3. Tighten bolts in two steps separately in order numbers in illustration. CAUTION: Do not hold oil filler neck (right bank) not to damage it. 1st step: 2.0 N.m (0.2 kg-m, 18 in-lb) 2nd step: 8.4 N.m (0.85 kg-m, 74 in-lb)
4. Install in the reverse order of removal.

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1. Remove engine assembly from vehicle. Refer to «REMOVAL AND INSTALLATION»(ref-159010-S32061018882005032300000) .
2. Remove the following components and related parts: Drive belt auto tensioner and idler pulley. Refer to «DRIVE BELT AUTO TENSIONER AND IDLER PULLEY»(ref-159010-S18606836252005032300000) . Thermostat housing and hoses. Refer to «REMOVAL AND INSTALLATION»(ref-172473-S12237633662005022800000) . Ignition coil. Refer to «REMOVAL AND INSTALLATION»(ref-159010-S25475195982005032300000) . Rocker cover. Refer to «REMOVAL AND INSTALLATION»(ref-159010-S40213109212005032300000) .
3. If necessary, remove intake valve timing control position sensor (right and left) and camshaft position sensor (PHASE) from intake valve timing control cover and front cover. CAUTION: Handle components and parts carefully to avoid dropping and shocks. Do not disassemble.
4. If necessary, remove intake valve timing control solenoid valve from intake valve timing control cover. CAUTION: Handle components and parts carefully to avoid dropping and shocks. Do not disassemble.
5. Remove intake valve timing control cover as follows: Loosen and remove fixing bolts in reverse order of that shown in figure. Use the seal cutter [SST: KV10111100 (J37228)] or the equivalent to cut liquid gasket for removal. CAUTION: Be careful not to damage mating surfaces. Pull out cover keeping levelness without an angle, as inner part of cover is engaged with the center of camshaft sprocket (INT).
6. Remove O-rings from front cover.
7. Obtain compression TDC of No. 1 cylinder as follows: Turn crankshaft pulley clockwise to align the TDC identification notch (without paint mark) with timing indicator on front cover. At this time, make sure the both intake and exhaust cam noses of No. 1 cylinder (top front on left bank) face outside. If they do not face outside, turn crankshaft pulley by 360 degrees once more.
8. Remove crankshaft pulley as follows: Remove rear plate cover. Refer to «OIL PAN AND OIL STRAINER»(ref-159010-S01345083202005032300000) . Set the ring gear stopper (SST). Loosen crankshaft pulley bolt. Pull crankshaft pulley with both hands to remove it. CAUTION: Do not remove fixing bolts. Keep loosened fixing bolts in place to protect removed crankshaft pulley from dropping. Do not remove balance weight (inner hexagon bolt) at the front of crankshaft pulley.
9. Remove oil pan and oil strainer. Refer to «OIL PAN AND OIL STRAINER»(ref-159010-S01345083202005032300000) .
10. Remove front cover as follows: Loosen and remove fixing bolts in reverse order of that shown in figure. Use the seal cutter [SST: KV10111100 (J37228)] or the equivalent to cut liquid gasket for removal. CAUTION: Be careful not to damage mating surfaces.
11. Remove front oil seal from front cover using suitable tool.
12. Remove O-rings from cylinder heads (right and left bank) and cylinder block.
13. Remove chain tensioner cover from front cover. Use seal cutter [SST: KV10111100 (J37228)] or equivalent tool to cut liquid gasket for remove.
14. Remove oil pump drive spacer. Install bolts into two bolt holes [M6 x pitch 1.0 mm (0.04 in.)] on front surface. Using a small puller, pull spacer off from crankshaft. NOTE: The center-to-center dimension between the two bolt holes is 33 mm (1.30 in).
15. Remove oil pump. Refer to «REMOVAL AND INSTALLATION»(ref-172635-S31696966532005030200000) .
16. Remove chain tensioner (left bank) as follows: To remove timing chain and associated parts, start with those on left bank. The procedure for removing parts on right bank is omitted because it is the same as that for left bank. Press tab in the direction of arrow (or turn lever in the direction of arrow) to unlock the locking with the groove that stops tensioner plunger from returning. Lightly press tensioner plunger to release the tension of spring for this operation. Push in tensioner plunger to align the hole on lever and that on pump main body. Pushing in tensioner plunger too far does not allow the holes to align. Therefore, push in the tensioner plunger to the degree at which the start of stopper groove and tab engages. Insert stopper pin [hard wire with approx. 0.5 mm (0.020 in) diameter or a similar tool] to fix plunger. With the plunger fixed, remove chain tensioner.
17. Remove chain tension guide and chain slack guide.
18. Remove timing chain and crankshaft sprocket. CAUTION: To avoid interference between valves and pistons, do not turn crankshaft or camshaft with timing chain is disconnected.
19. With hexagonal part of camshaft locked with wrench, loosen bolts securing camshaft sprocket to remove camshaft sprocket.
20. Using the same procedure as for left bank, remove timing chain and associated parts on right side.

Valve Guide Replacement

When valve guide is removed, replace with oversized (0.2 mm, 0.008 in) valve guide.

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1. To remove valve guide, heat cylinder head to 110 to 130 ° C (230 to 266°F) by soaking in heated oil.
2. Drive out valve guide with a press [under a 20 kN (2 ton, 2.2 US ton, 2.0 lmp ton) pressure] or hammer and the valve guide drift (commercial service tool). CAUTION: Cylinder head contains heat, when working, wear protective equipment to avoid getting burned.
3. Using the valve guide reamer (commercial service tool), ream cylinder head valve guide hole. Valve guide hole diameter (for service parts) Intake and exhaust : 10.175 - 10.196 mm (0.4006 - 0.4014 in.)
4. Heat cylinder head to 110 to 130° C (230 to 266° F) by soaking in heated oil.
5. Press valve guide from the camshaft side to dimensions as in the illustration. CAUTION: Cylinder head contains heat, when working, wear protective equipment to avoid getting burned.
6. Using the valve guide reamer (commercial service tool), apply reamer finish to valve guide. Standard Intake and exhaust : 6.000 - 6.018 mm (0.2362- 0.2369 in.)

Valve Seat Replacement

When valve seat is removed, replace with oversized (0.5 mm, 0.020 in) valve seat.

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1. Bore out old seat until it collapses. Boring should not continue beyond the bottom face of the seat recess in cylinder head. Set the machine depth stop to ensure this. CAUTION: Prevent to scratch cylinder head by excessive boring.
2. Ream cylinder head recess diameter for service valve seat. Oversize [0.5 mm (0.020 in.)]: Intake 37.500 - 37.516 mm (1.4764 - 1.4770 in.) Exhaust 32.700 - 32.716 mm (1.2874 - 1.2880 in.) Be sure to ream in circles concentric to the valve guide center. This will enable valve seat to fit correctly.
3. Heat cylinder head to 110 to 130 ° C (230 to 266 ° F) by soaking in heated oil.
4. Provide valve seats cooled well with dry ice. Force fit valve seat into cylinder head. CAUTION: Avoid directly touching cold valve seats. Cylinder head contains heat, when working, wear protective equipment to avoid getting burned.
5. Using the valve seat cutter set (commercial service tool) and valve seat grinder, finish the seat to the specified dimensions. CAUTION: When using the valve seat cutter, firmly grip the cutter handle with both hands. Then, press on the contacting surface all around the circumference to cut in a single drive. Improper pressure on with the cutter or cutting many different times may result in stage valve seat. Grind to obtain the dimensions indicated in the figure.
6. Using compound, grind to adjust valve fitting.
7. Check again for normal contact. Refer to «Valve Seat Contact»(ref-159010-S40192785312005032300000) .

Install in the reverse order of removal.

1. Where positioning pin is used, be sure to securely insert it into the hole of mating part.
2. When installing front engine mounting bracket to cylinder block, first tighten two bolts on upper side. Then, tighten two bolts on lower side. (The same applies to both right and left.)

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