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Engine Mechanical: Adjustments Infiniti I35 II

Mechanical 12 illustrations ~305 words

Adjust valve clearance while engine is cold.

Perform adjustment by selecting head thickness of valve lifter (Adjusting shims are not used).

Scheme 26

Scheme 26: Adjust valve clearance while engine is cold.
Scheme 26: Adjust valve clearance while engine is cold.

Scheme 27

Scheme 27
Scheme 27

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Scheme 28

Scheme 29

Scheme 29
Scheme 29
  1. Remove camshaft.
  2. Remove valve lifter at location where measured value is outside standard.
  3. Measure center thickness of removed valve lifter with micrometer.
  4. Use equation below to calculate valve lifter thickness for replacement. Valve lifter thickness calculation: t = t1 + (C1 - C2) t = Thickness of replacement valve lifter t1 = Thickness of removed valve lifter C1 = Measured valve clearance C2 = Standard valve clearance Valve lifter thickness: Intake: 0.30 mm (0.012 in) Exhaust: 0.33 mm (0.013 in) Thickness of new valve lifter can be identified by stamp mark on reverse side (inside cylinder). Available thickness of valve lifter (Factory setting): 7.88 - 8.36 mm (0.3102 - 0.3291 in) [in 0.02 mm (0.0008 in) step] in 25 sizes (Intake/Exhaust)
  5. Install selected valve lifter.
  6. Install camshaft.
  7. Rotate crankshaft a few turns by hand.
  8. Confirm that valve clearance is within standard.
  9. After repair, confirm that valve clearance is within standard with engine warmed-up. Valve clearance

Scheme 30

Scheme 30: Removal and Installation
Scheme 30: Removal and Installation
WARNINGSituate vehicle on a flat and solid surface. Place chocks at front and back of rear wheels. Do not remove engine until exhaust system has completely cooled off. Otherwise, you may burn yourself and/or fire may break out in fuel line. For safety during subsequent steps, the tension of wires should be slackened against the engine. Before disconnecting fuel hose, release fuel pressure from fuel line. Refer to FUEL SYSTEM PRESSURE RELEASE . Before removing front axle from transaxle, place safety stands under designated front supporting points. Refer to GARAGE JACK AND SAFETY STAND . Be sure to hoist engine and transaxle in a safe manner. For engines not equipped with engine slingers, attach proper slingers and bolts described in PARTS CATALOG.
CAUTIONWhen lifting engine, be careful not to strike adjacent parts, especially the following: Accelerator wire casing, brake lines, and brake master cylinder. In hoisting the engine, always use engine slingers in a safe manner. In removing drive shaft, be careful not to damage grease seal of transaxle. Before separating engine and transaxle, remove the crankshaft position sensor (POS) from the assembly. Always pay extra attention not to damage edge of crankshaft position sensor (POS) or ring gear teeth.

Scheme 31

Scheme 31: REMOVAL
Scheme 31: REMOVAL

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Scheme 32
Scheme 32

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Scheme 36

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Scheme 37
Scheme 37
  1. Remove engine undercover and hood.
  2. Drain coolant from both cylinder block and radiator.
  3. Remove vacuum hoses, fuel hoses, wires, harnesses, connectors and so on.
  4. Remove front exhaust tubes, ball joints and drive shafts.
  5. Remove radiator and fans.
  6. Remove drive belts.
  7. Remove alternator, compressor and power steering oil pump from engine.
  8. Set a suitable transmission jack under transaxle. Hoist engine with engine slinger.
  9. Remove LH engine mounting.
  10. Disconnect control rod and support rod from transaxle (M/T model).
  11. Disconnect control cable from transaxle (A/T model).
  12. Remove RH engine mounting.
  13. Remove center member and then slowly lower transmission jack.
  14. Remove engine with transaxle as shown.

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