2004 - Engine Mechanical - Sedan: Adjustments Infiniti G35 III

ADJUSTMENT

1. Perform adjustment depending on selected head thickness of valve lifter.

Scheme 1118

Scheme 1119

Scheme 1120

1. Remove camshaft. Refer to " «REMOVAL»(ref-239989-S34577373972006080400000) ".
2. Remove valve lifters at the locations that are out of the standard.
3. Measure the center thickness of removed valve lifters with micrometer.
4. Use the equation below to calculate valve lifter thickness for replacement. Valve lifter thickness calculation: t = t1 + (C1 - C2) t = Valve lifter thickness to be replaced t1 = Removed valve lifter thickness C1 = Measured valve clearance C2 = Standard valve clearance: Intake: 0.30 mm (0.012 in) * Exhaust: 0.33 mm (0.013 in) * * : Approximately 20°C (68°F) Thickness of new valve lifter can be identified by stamp marks on the reverse side (inside the cylinder). Stamp mark 788U or 788R indicates 7.88 mm (0.3102 in) in thickness. NOTE: 2 types of stamp marks are used for parallel setting and for manufacturer identification. Available thickness of valve lifter: 27 sizes with range 7.88 to 8.40 mm (0.3102 to 0.3307 in) in steps of 0.02 mm (0.0008 in) (when manufactured at factory).
5. Install selected valve lifter.
6. Install camshaft. Refer to " «INSTALLATION»(ref-239989-S00898221922006080400000) ".
7. Manually turn crankshaft pulley a few turns.
8. Make sure that valve clearances for cold engine are within specifications by referring to the specified values. Valve clearance

Scheme 1121

1. Remove camshaft relating to valve oil seal to be removed. Refer to " «CAMSHAFT»(ref-239989-S12802555822006080400000) ".
2. Remove valve lifter. Refer to " «CAMSHAFT»(ref-239989-S12802555822006080400000) ".
3. Turn crankshaft until the cylinder requiring new oil seals is at TDC. This will prevent valve from dropping into cylinder.
4. Remove valve collet. Compress valve spring with valve spring compressor, attachment and adapter (SST). Remove valve collet with magnet hand. CAUTION: When working, take care not to damage valve lifter holes.
5. Remove valve spring retainer and valve spring.
6. Remove valve oil seal using valve oil seal puller (SST).

Scheme 1122

Scheme 1123

1. Apply engine oil on new valve oil seal joint and seal lip.
2. Using valve oil seal drift (SST), press fit valve seal to height "H" shown in the figure. NOTE: Dimension "H": Height measured before valve spring seat installation Intake and exhaust: 14.3 - 14.9 mm (0.563 - 0.587 in)
3. Install in the reverse order of removal after this step.

Scheme 1124

Scheme 1125

Scheme 1126

Scheme 1127

1. Remove the following parts: Undercover Drive belts; Refer to " «DRIVE BELTS»(ref-239989-S15227605742006080400000) ". Radiator shroud (lower); Refer to «RADIATOR»(ref-179249-S16871848002005070400000) (A/T models). Cooling fan; Refer to «REMOVAL AND INSTALLATION (CRANKSHAFT DRIVEN TYPE) (A/T MODELS)»(ref-179249-S20378668712005070400000) (A/T models). Radiator cooling fan assembly; Refer to «REMOVAL AND INSTALLATION (MOTOR DRIVEN TYPE) (M/T MODELS)»(ref-179249-S19520336252005070400000) (M/T models). Starter motor; Refer to «STARTING SYSTEM»(ref-179279-S36595825962005070500000) .
2. Remove crankshaft pulley as follows: Set ring gear stopper (SST) as shown in the figure. Loosen crankshaft pulley mounting bolt and locate bolt seating surface at 10 mm (0.39 in) from its original position. CAUTION: Do not remove crankshaft pulley bolt as it will be used as a supporting point for suitable puller. Place suitable puller tab on holes of crankshaft pulley, and pull crankshaft pulley through. CAUTION: Do not put suitable puller tab on crankshaft pulley periphery, as this will damage internal damper.
3. Remove front oil seal using suitable tool. CAUTION: Be careful not to damage front timing chain case and crankshaft.

Scheme 1128

1. Apply new engine oil to the oil and dust seal lips.
2. Using suitable drift, press fit until the height of front oil seal is level with the mounting surface. Suitable drift: outside diameter 59 mm (2.32 in), inside diameter 49 mm (1.93 in). CAUTION: Press fit straight and avoid causing burrs or tilting oil seal.
3. Install in the reverse order of removal after this step.

Scheme 1129

1. Remove oil pan (upper). Refer to " «OIL PAN AND OIL STRAINER»(ref-239989-S24897354582006080400000) ".
2. Remove transmission assembly. Refer to «TRANSMISSION ASSEMBLY»(ref-169546-S12439022792004121000000) (M/T models) or «TRANSMISSION ASSEMBLY»(ref-214147-S27077472682006012700000) (A/T models).
3. Use seal cutter (SST) to cut away liquid gasket and remove rear oil seal retainer. CAUTION: Be careful not to damage mounting surface. NOTE: Rear oil seal and retainer from a single part are handled as an assembly.

Scheme 1130

1. Remove old liquid gasket on mating surface of cylinder block and oil pan using scraper.
2. Apply new engine oil to the oil and dust seal lips.
3. Apply liquid gasket to rear oil seal retainer using tube presser [SST: WS39930000 ( - )] as shown in the figure. Use Genuine RTV Silicone Sealant or equivalent. Refer to «RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS»(ref-179251-S41041050972005070400000) . Assembly should be done within 5 minutes after coating.
4. Install rear oil seal retainer to cylinder block.
5. Install in the reverse order of removal after this step.

Scheme 1131

Scheme 1132

Scheme 1133

Scheme 1134

1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to «FUEL PRESSURE RELEASE»(ref-179347-S02274497982005070600000) .
3. Disconnect fuel pump fuse to avoid fuel injection during measurement.
4. Remove engine cover with power tool. Refer to " «INTAKE MANIFOLD COLLECTOR»(ref-239989-S09673247892006080400000) ".
5. Remove ignition coil and spark plug from each cylinder. Refer to " «IGNITION COIL»(ref-239989-S06508811392006080400000) " and «SPARK PLUG (PLATINUM-TIPPED TYPE)»(ref-239989-S20206902532006080400000)
6. Connect engine tachometer (not required in use of CONSULT-II).
7. Install compression tester with adapter onto spark plug hole. Use compression gauge whose picking up end inserted to spark plug hole is smaller than 20 mm (0.79 in) in diameter. Otherwise, it may be caught by cylinder head during removal.
8. With accelerator pedal fully depressed, turn ignition switch to "START" for cranking. When the gauge pointer stabilizes, read the compression pressure and engine rpm. Perform these steps to check each cylinder. Compression pressure: CAUTION: Always use a fully changed battery to obtain specified engine speed. If the engine speed is out of specified range, check battery liquid for proper gravity. Check engine speed again with normal battery gravity. If compression pressure is below minimum value, check valve clearances and parts associated with combustion chamber (valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head gasket). After the checking, measure the compression pressure again. If some cylinders have low compression pressure, pour small amount of engine oil into the spark plug hole of the cylinder to re-check it for compression. If the added engine oil improves the compression, piston rings may be worn out or damaged. Check piston rings and replace if necessary. If the compression pressure remains at low level despite the addition of engine oil, valves may be malfunctioning. Check valves for damage. Replace valve or valve seat accordingly. If two adjacent cylinders have respectively low compression pressure and their compression remains low even after the addition of engine oil, gaskets are leaking. In such a case, replace cylinder head gaskets.
9. After inspection is completed, install removed parts.
10. Start engine, and make sure that engine runs smoothly.
11. Perform trouble diagnosis. If DTC appears, erase it. Refer to «TROUBLE DIAGNOSIS»(ref-169865-S41706557552004121700000) .

Scheme 1135

Scheme 1136

1. Remove camshaft. Refer to " «CAMSHAFT»(ref-239989-S12802555822006080400000) ". NOTE: It is also possible to perform the following steps 2 and 3 just before removing the camshaft.
2. Temporarily fit front suspension member to support engine. Refer to «FRONT SUSPENSION MEMBER»(ref-179240-S27159563052005070400000) . CAUTION: Temporary fitting means the status that engine is adequately stable though the hoist is released from hanging. NOTE: At the time of the start of this procedure front suspension member is removed, and cylinder head is hanged by the hoist with engine slinger installed.
3. Release the hoist from hanging, then remove the engine slinger.
4. Remove the following components and related parts: Fuel tube and fuel injector assembly. Refer to " «FUEL INJECTOR AND FUEL TUBE»(ref-239989-S41758591832006080400000) ". Intake manifold. Refer to " «INTAKE MANIFOLD»(ref-239989-S13455201432006080400000) ". Exhaust manifold. Refer to " «EXHAUST MANIFOLD AND THREE WAY CATALYST»(ref-239989-S14104294592006080400000) ". Water inlet and thermostat assembly. Refer to «WATER INLET AND THERMOSTAT ASSEMBLY»(ref-179249-S05724975202005070400000) . Water outlet and water pipe. Refer to «WATER OUTLET AND WATER PIPING»(ref-179249-S19172876112005070400000) .
5. Remove cylinder head bolts in reverse order as shown in the figure with cylinder head bolt wrench (commercial service tool) and power tool.
6. Remove cylinder head gaskets.