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Engine Mechanical (Crosscabriolet): Adjustments Nissan Murano Z51 рестайлинг

Mechanical 5 illustrations ~463 words

Tension Adjustment

Refer to " DRIVE BELT ".

Scheme 311

Scheme 311: REMOVAL
Scheme 311: REMOVAL
  1. Remove front wheel and tire (RH).
  2. Remove splash guard (RH). Refer to , " «FENDER PROTECTOR : EXPLODED VIEW»(ref-404420-S23073967682011061300000) ".
  3. Hold the hexagonal part in center of drive belt auto-tensioner pulley with a box wrench securely. Then move the wrench handle in the direction of arrow (loosening direction of drive belt). CAUTION: Avoid placing hand in a location where pinching may occur if the holding tool accidentally comes off. Never loosen the hexagonal part in center of drive belt auto-tensioner pulley (Never turn it counterclockwise). If turned counterclockwise, the complete drive belt auto-tensioner must be replaced as a unit, including the pulley.
  4. Insert a rod approximately 6 mm (0.24 in) in diameter such as short-length screwdriver into the hole (A) of the retaining boss to fix drive belt auto-tensioner pulley.
  5. Loosen drive belt from water pump pulley in sequence, and remove it.

ADJUSTMENT

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

Scheme 312

Scheme 312
Scheme 312

Scheme 313

Scheme 313
Scheme 313
  1. Measure the valve clearance. Refer to " «INSPECTION»(ref-404417-S08827333102011061300000) ".
  2. Remove camshaft. Refer to " «EXPLODED VIEW»(ref-404417-S17846143192011061300000) ".
  3. Remove valve lifters at the locations that are out of the standard.
  4. Measure the center thickness of the removed valve lifters with a micrometer (A).
  5. 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) Thickness of new valve lifter can be identified by stamp marks on the reverse side (inside the cylinder). Stamp mark 788P indicates 7.88 mm (0.3102 in) in thickness. 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). Refer to " «CAMSHAFT»(ref-404417-S15892634922011061300000) ".
  6. Install selected valve lifter.
  7. Install camshaft. Refer to " «EXPLODED VIEW»(ref-404417-S17846143192011061300000) ".
  8. Manually turn crankshaft pulley a few turns.
  9. Check that the valve clearances for cold engine are within the specifications by referring to the specified values.
  10. Install all removal parts in the reverse order of removal.
  11. Warm up the engine, and check for unusual noise and vibration.

Scheme 314

Scheme 314: Exploded View
Scheme 314: Exploded View

Scheme 315

Scheme 315: REMOVAL
Scheme 315: REMOVAL
  1. Remove radiator core support covers (RH and LH) and air duct (inlet). Refer to " «EXPLODED VIEW»(ref-404417-S00865322772011061300000) ".
  2. Remove engine cover mounting bolts (A) and (B).
  3. Draw and pull out engine cover from engine cover mounting bolts (C) and (D). CAUTION: Pull engine cover from mounting bolt (D) holding with hand the position (E) as shown in the illustration.
  4. Remove engine cover mounting bolts (C) and (D) if necessary.

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