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Maintenance: NVH Infiniti M37 IV

Procedures 6 illustrations ~453 words

APPEARANCE AND NOISE

  1. Check the propeller shaft tube surface for dents or cracks. If damaged, replace propeller shaft assembly.
  2. If center bearing is noisy or damaged, replace propeller shaft assembly.

VIBRATION

If vibration is present at high speed, inspect propeller shaft runout first.

Scheme 43

Scheme 43: VIBRATION
Scheme 43: VIBRATION

Scheme 44

Scheme 44
Scheme 44
  1. With a dial indicator, measure propeller shaft runout at runout measuring points by rotating final drive companion flange with hands. Propeller shaft runout: Refer to " «PROPELLER SHAFT RUNOUT»(ref-573594-S23790491492013082200000) ". Propeller shaft runout measuring point (Point "delta ") Dimension A VQ37VHR: 381.5 mm (15.02 in) VK56VD: 386.5 mm (15.22 in)
  2. If runout still exceeds specifications, separate propeller shaft at final drive companion flange; then change the phase between companion flange and propeller shaft by the one bolt hole at a time and install propeller shaft.
  3. If runout is more than the limit value, remove and check propeller shaft.
  4. Check the vibration by driving vehicle.
  1. Check the propeller shaft tube surface for dents or cracks. If damaged, replace propeller shaft assembly.
  2. If center bearing is noisy or damaged, replace propeller shaft assembly.

If vibration is present at high speed, inspect propeller shaft runout first.

Scheme 45

Scheme 45: VIBRATION
Scheme 45: VIBRATION

Scheme 46

Scheme 46
Scheme 46
  1. With a dial indicator, measure propeller shaft runout at runout measuring points by rotating final drive companion flange with hands. Propeller shaft runout: Refer to " «PROPELLER SHAFT RUNOUT»(ref-573587-S01810160452013082200000) ". Propeller shaft runout measuring point (Point "delta ") Dimension 172 mm (6.77 in) 172 mm (6.77 in) 172 mm (6.77 in)
  2. If runout still exceeds specifications, separate propeller shaft at final drive companion flange; then change the phase between companion flange and propeller shaft by the one bolt hole at a time and install propeller shaft.
  3. If runout is more than the limit value, remove and check propeller shaft.
  4. Check the vibration by driving vehicle.
  1. Check the propeller shaft tube surface for dents or cracks. If damaged, replace propeller shaft assembly.
  2. If center bearing is noisy or damaged, replace propeller shaft assembly.

If vibration is present at high speed, inspect propeller shaft runout first.

Scheme 47

Scheme 47: VIBRATION
Scheme 47: VIBRATION

Scheme 48

Scheme 48
Scheme 48
  1. With a dial indicator, measure propeller shaft runout at runout measuring points by rotating final drive companion flange with hands. Propeller shaft runout: Refer to " «PROPELLER SHAFT RUNOUT»(ref-573592-S06066648562013082200000) ". Propeller shaft runout measuring point (Point "delta ") Dimension 192 mm (7.56 in) 172 mm (6.77 in) 172 mm (6.77 in)
  2. If runout still exceeds specifications, separate propeller shaft at final drive companion flange or transfer companion flange; then change the phase between companion flange and propeller shaft by the one bolt hole at a time and install propeller shaft.
  3. If runout is more than the limit value, remove and check propeller shaft.
  4. Check the vibration by driving vehicle.

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