Nissan GT-R (R35) · Service Manual TRANSMISSION & DRIVELINE

PRECAUTIONS

FRONT FINAL DRIVE: F160A

Aluminum Die-Casting Parts Handling

 
 PROHIBITION OF WELDING OR BEATING REPAIR

  • Material made of aluminum die-casting parts is heat-treated and looses strength when being exposed to welding heat. Do not perform welding repair for cracks, damage or others.
  • For aluminum die-casting parts deformation, do not perform repair by beating. Always repair by replacement as an assembly.
 
 CRACK CHECK

When the vehicle is damaged, always perform a visual deformation check and a crack check.
 
 Crack Check Procedures

For a crack check, use dye penetrant inspection fluid (pre-cleaning fluid, penetrant fluid and developer fluid).
■ CAUTION ■
Always perform a crack check in accordance with the procedures specified by the manufacturer of the dye penetrant inspection fluid.
    1.Spray pre-cleaning fluid on the checking surface for cleaning.
    2.Spray penetrant fluid on the checking surface and wait until the penetrant fluid soaks into any cracks.
    3.Wipe off excessive penetrant fluid, and then also lightly wipe off penetrant fluid using a wet cloth.
    4.Spray developer fluid on the checking surface.
    5.Cracks, if any, are dyed red in color.
 
 STRAY CURRENT CORROSION

  • Corrosion occurs to aluminum die-casting parts by the stray current corrosion phenomenon, when directly contacting other parts made of steel. Always apply anti-stray current corrosion paint (primer) on the mounting surface.
  • Clean mounting surface to prevent any foreign matter, steel powder or others from being mixed in. Always apply the specified adhesive when installing.
  • Corrosion by stray current corrosion may occur when installing with any other bolts than the specified bolt. Always use the specified bolt that is surface treated.
  • When loosening the specified bolt that is tightened, the treated surface may peel. Never reuse the specified bolt that is tightened once.
 
 TIGHTENING TORQUE CONTROL

Material made of aluminum die-casting parts is soft in term of hardness. Tightening torque must be controlled exactly as specified. Always use a torque wrench to install any part to the specified tightening torque.
■ WARNING ■
Never use a power tool to remove or tighten bolts for aluminum die-casting part.

Precaution Necessary for Steering Wheel Rotation after Battery Disconnect


NOTE：
  • Before removing and installing any control units, first turn the push-button ignition switch to the LOCK position, then disconnect both battery cables.
  • After finishing work, confirm that all control unit connectors are connected properly, then re-connect both battery cables.
  • Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work. If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.
This vehicle is equipped with a push-button ignition switch and a steering lock unit.
If the battery is disconnected or discharged, the steering wheel will lock and cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the procedure below before starting the repair operation.
 
 OPERATION PROCEDURE

    1.Connect both battery cables.
    NOTE：
    Supply power using jumper cables if battery is discharged.
    2.Turn the push-button ignition switch to ACC position.(At this time, the steering lock will be released.)
    3.Disconnect both battery cables. The steering lock will remain released with both battery cables disconnected and the steering wheel can be turned.
    4.Perform the necessary repair operation.
    5.When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering wheel will lock when the push-button ignition switch is turned to LOCK position.)
    6.Perform self-diagnosis check of all control units using CONSULT-III.

General Precautions


■ CAUTION ■
 After finishing servicing, check that all the tools and waste are stored in a customary place.

Service Notice or Precautions for Front Final Drive


  • Check for the correct installation before removal or disassembly. If matching marks are required, make sure that they do not interfere with the function of the parts they are applied to.
  • Overhaul should be done in a clean work area, it is preferable to work in dustproof area.
  • Before disassembly, using steam or white gasoline, completely remove sand and mud from the exterior of the unit, preventing them from entering into the unit during disassembly or assembly.
  • Check appearance of the disassembled parts for damage, deformation, and unusual wear. Replace them with a new ones if necessary.
  • Replace lock pins, oil seals and bearings with new ones every time they are removed.
  • Use Genuine NISSAN parts for replacement.
  • In principle, tighten bolts or nuts gradually in several steps working diagonally from inside to outside. If tightening sequence is specified, observe it. Observe a tightening sequence if specified.
  • Clean and flush the parts sufficiently and dry them with compressed air.
  • Be careful not to damage sliding surfaces and mating surfaces.
  • Always use paper type waste for cleaning the inside of components.
  • To prevent the entry of lint, do not use cotton gloves or a shop cloth.
  • During assembly, observe the specified torque and apply new NISSAN differential oil or multi-purpose grease, as specified for each vehicle.
  • Never use gasket fluid because it may dissolve in the gear oil.
  • During assembly, observe the specified tightening torque, and apply new gear oil, petroleum jelly, or multi-purpose grease as specified for each vehicle, if necessary.
NOTE：
 Because there is not enough space for service, the front oil seal cannot be replaced on the vehicle.