differential INFINITI FX35 2008 User Guide

FFD-8
< SERVICE INFORMATION >
DIFFERENTIAL GEAR OIL
DIFFERENTIAL GEAR OIL
Changing Differential Gear OilINFOID:0000000001327481
DRAINING
1. Stop engine.
2. Remove drain plug (1) and drain gear oil.
3. Set a gasket on drain plug (1) and install it to final drive assem-bly and tighten to the specified torque. Refer to FFD-17, "
Disas-
sembly and Assembly", FFD-17, "Disassembly and Assembly".
CAUTION:
Never reuse gasket.
FILLING
1. Remove filler plug (1). Fill with new gear oil until oil level reaches the specified level near filler plug mounting hole.
2. After refilling oil, check oil level. Set a gasket to filler plug (1), then install it to final drive assembly. Refer to FFD-17, "
Disas-
sembly and Assembly", FFD-17, "Disassembly and Assembly".
CAUTION:
Never reuse gasket.
Checking Differential Gear OilINFOID:0000000001327482
OIL LEAKAGE AND OIL LEVEL
 Make sure that oil is not leaking fr om final drive assembly or around it.
 Remove filler plug (1) and check oil level from filler plug mounting hole as shown in the figure.
CAUTION:
Never start engine while checking oil level.
 Set a gasket on filler plug (1) and install it on final drive assembly.
Refer to FFD-17, "
Disassembly and Assembly", FFD-17, "Disas-
sembly and Assembly".
CAUTION:
Never reuse gasket.
PDIA0781J
Oil grade and Viscosity:
Refer to MA-9, "
Fluids and Lubricants".
Oil capacity:
Approx. 0.65 (1-3/8 US pt, 1-1/8 Imp pt)
PDIA0782J
PDIA0782J
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FRONT OIL SEALFFD-9
< SERVICE INFORMATION >
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FRONT OIL SEAL
Removal and InstallationINFOID:0000000001327483
REMOVAL
1. Drain gear oil. Refer to FFD-8, "Changing Differential Gear Oil".
2. Remove front propeller shaft. Refer to PR-4, "
Removal and Installation".
3. Remove front drive shaft both. Refer to FAX-16, "
Removal and Installation (Right Side)", FAX-15,
"Removal and Installation (Left Side)".
4. Remove side shaft assembly.
5. Remove drive pinion lock nut using a flange wrench.
6. Put matching mark (B) on the end of the drive pinion. The matching mark (B) should be in line with the matching mark (A)
on companion flange (1).
CAUTION:
For matching mark, use pain t. Never damage companion
flange and drive pinion.
NOTE:
The matching mark (A) on the final drive companion flange (1)
indicates the maximum vertical runout position.
7. Remove companion flange using a puller.
8. Remove front oil seal using the puller. CAUTION:
Be careful not to damage gear carrier.
PDIA0784J
PDIA0783J
PDIA0652E
Tool number A: KV381054S0 (J-34286)
PDIA0785J
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FRONT OIL SEALFFD-11
< SERVICE INFORMATION >
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9. Refill gear oil to the final drive and check oil level. Refer to FFD-8, "Changing Differential Gear Oil".
10. Check the final drive for oil leakage. Refer to FFD-8, "
Checking Differential Gear Oil".
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SIDE OIL SEALFFD-13
< SERVICE INFORMATION >
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4. Install the front drive shaft. Refer to FAX-15, "Removal and Installation (Left Side)".
5. When oil leaks while removing, check oil level after the installation. Refer to FFD-8, "
Checking Differential
Gear Oil".
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FRONT FINAL DRIVE ASSEMBLYFFD-15
< SERVICE INFORMATION >
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 Tighten mounting bolts in the order as described below when installing front final drive assembly: side of gear carrier (1), upper
side of gear carrier (2), part of ca rrier cover (3), lower part of gear
carrier (4).
CAUTION:
Align the mating faces of gear car rier and oil pan for installa-
tion.
 When installing breather hoses (1) and tube (2), refer to the figure. CAUTION:
Make sure there are no pinched or restricted areas on the
breather hose caused by bending or winding when installing
it.
- Make sure the paint mark facing up ( ).
- Securely install the hose until it seats the rounded portion of the
tube ( ).
- Install breather connector as shown in the figure.
- Seat the breather tube bracket end (A) to the machined face (B) of gear carrier boss.
 When oil leaks while removing final drive assembly, check oil level after the installation. Refer to FFD-8, "
Changing Differential Gear
Oil".
Removal and Installation (VK45DE Models)INFOID:0000000001327486
COMPONENTS
PDIA0839J
PDIA0790J
:Vehicle front
Angle “A”: 0 - 30
°
PDIA0841J
PDIA0842E
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FRONT FINAL DRIVE ASSEMBLYFFD-17
< SERVICE INFORMATION >
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 Tighten mounting bolts in the order as described below when installing front final drive assembly: upper side of gear carrier (1),
part of carrier cover (2), lower part of gear carrier (3).
CAUTION:
Align the mating faces of gear car rier and oil pan for installa-
tion.
 When installing breather hoses and tube, refer to the figure. CAUTION:
Make sure there are no pinched or restricted areas on the
breather hose caused by bending or winding when installing
it.
 Install breather connector as shown in the figure.
 When oil leaks while removing final drive assembly, check oil level after the installation. Refer to FFD-8, "
Checking Differential Gear
Oil".
Disassembly and AssemblyINFOID:0000000001327487
COMPONENTS (VQ35DE MODELS)
PDIA1213E
PDIA0661E
Angle “A”: 22.5°
“B”: 22.5 - 45 °
PDIA0822E
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FFD-18
< SERVICE INFORMATION >
FRONT FINAL DRIVE ASSEMBLY
1. Drive pinion lock nut 2. Companion flange 3. Front oil seal
4. Pinion front bearing 5. Drive pinion bearing adjusting wash-er6. Drive pinion adjusting washer
7. Gear carrier 8. Pinion rear bearing 9. Pinion height adjusting washer
10. Drive pinion 11. Drive gear 12. Side oil seal (right side)
13. Side retainer 14. O-ring 15. Side bearing adjusting shim
16. Side bearing 17. Differential case 18. Breather connector
19. Dowel pin 20. Filler plug 21. Drain plug
22. Gasket 23. Carrier cover 24. Gear oil defence
25. Side gear thrust washer 26. Side gear 27. Circular clip
28. Pinion mate thrust washer 29. Pinion mate gear 30. Pinion mate shaft
31. Lock pin 32. Side bearing adjusting washer 33. Side oil seal (left side)
34. Side shaft bearing 35. Extension tube retainer 36. Side shaft oil seal
37. Dust sealed 38. Side shaft
A: Oil seal lip
B: Screw hole
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FFD-20
< SERVICE INFORMATION >
FRONT FINAL DRIVE ASSEMBLY
ASSEMBLY INSPECTION AND ADJUSTMENT
 Before inspection and adjustment, drain gear oil.
Total Preload Torque
1. Rotate drive pinion back and forth 2 to 3 times to check for unusual noise and rotation malfunction.
2. Rotate drive pinion at least 20 times to check for smooth operation of the bearing.
3. Measure total preload with preload gauge.NOTE:
Total preload torque = Pinion bearing preload torque + Side
bearing preload torque
 If measured value is out of the specification, disassemble it to check and adjust each part. Adjust the pinion bearing preload and
side bearing preload.
Adjust the pinion bearing preload first, then adjust the side bearing preload.
16. Side bearing 17. Differential case 18. Breather connector
19. Dowel pin 20. Filler plug 21. Drain plug
22. Gasket 23. Carrier cover 24. Gear oil defence
25. Side gear thrust washer 26. Side gear 27. Circular clip
28. Pinion mate thrust washer 29. Pinion mate gear 30. Pinion mate shaft
31. Lock pin 32. Side bearing adjusting washer 33. Side oil seal (left side)
34. Side shaft bearing 35. Extension tube retainer 36. Side shaft oil seal
37. Dust sealed 38. Side shaft
A: Oil seal lip
B: Screw hole
Refer to GI-8, "
Component" and the followings for the symbols in the figure.
: Apply multi-purpose grease.
: Apply gear oil.
: Apply anti-corrosion oil.
: Apply Genuine Silicone RTV or equivalent. Refer to
GI-44, "
Recommended Chemical Product and Sealant".
: Apply Genuine Medium Strength Thread Locking Sealant or equivalent. Refer to
GI-44, "
Recommended Chemical Prod-
uct and Sealant".
Tool number A: ST3127S000 (J-25765-A)
Total preload torque:
1.56 - 2.65 N·m (0.16 - 0.27 kg-m, 14 - 23 in-lb)
PDIA0792J
When the preload torque is largeOn pinion bearings: Decrease the drive pinion bearing adjusting washer and drive pinion
adjusting washer thickness. Refer to FFD-39, "
Inspection and Adjust-
ment" and FFD-39, "Inspection and Adjustment".
On side bearings: Increase the side bear ing adjusting shim thickness. Refer to FFD-39,
"Inspection and Adjustment".
When the preload torque is small On pinion bearings: Increase the drive pinion bearing adjusting washer and drive pinion
adjusting washer thickness. Refer to FFD-39, "
Inspection and Adjust-
ment" and FFD-39, "Inspection and Adjustment".
On side bearings: Decrease the side bearin g adjusting shim thickness. Refer to FFD-39,
"Inspection and Adjustment".
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FRONT FINAL DRIVE ASSEMBLYFFD-21
< SERVICE INFORMATION >
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Drive Gear Runout
1. Remove carrier cover. Refer to "Differential Assembly".
2. Fit a dial indicator to the drive gear back face.
3. Rotate the drive gear to measure runout.
 If the runout is outside of the repair limit, check drive gear assem-
bly condition; foreign material may be caught between drive gear
and differential case, or differential case or drive gear may be
deformed, etc.
CAUTION:
Replace drive gear and dri ve pinion gear as a set.
Tooth Contact
1. Remove carrier cover. Refer to "Differential Assembly".
2. Apply red lead to drive gear.
CAUTION:
Apply red lead to both the f aces of 3 to 4 gears at 4 loca-
tions evenly spaced on drive gear.
3. Rotate drive gear back and forth several times, check drive pin- ion gear to drive gear tooth contact.
CAUTION:
Check tooth contact on dri ve side and reverse side.
Runout limit: 0.05 mm (0.0020 in)
SPD886
SPD357
SDIA0570E
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FRONT FINAL DRIVE ASSEMBLYFFD-23
< SERVICE INFORMATION >
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 If the tooth contact is near the face (face contact), or near the heel (heel contact), thicken pinion height adjusting washers to move
drive pinion closer to drive gear.
Refer to FFD-39, "
Inspection and Adjustment".
 If the tooth contact is near the flank (flank contact), or near the toe
(toe contact), thin pinion height adjusting washers to move drive
pinion farther from drive gear.
Refer to FFD-39, "
Inspection and Adjustment".
Backlash
1. Remove carrier cover. Refer to "Differential Assembly".
2. Fit a dial indicator to the drive gear face to measure the back-
lash.
 If the backlash is outside of the specified value, change the thick- ness of side bearing adjusting washer.
Companion Flange Runout
1. Fit a dial indicator onto the companion flange face (inner side of the propeller shaft mounting bolt holes).
2. Rotate companion flange to check for runout.
3. Fit a test indicator to the inner side of companion flange (socket diameter).
4. Rotate companion flange to check for runout.
5. If the runout value is outside the runout limit, follow the procedure below to adjust.
a. Check for runout while changing the phase between companion flange and drive pinion by 90 ° step, and
search for the position where the runout is the minimum.
PDIA0440E
PDIA0441E
Backlash: 0.10 - 0.15 mm (0.0039 - 0.0059 in)
When the backlash is large:
Decrease side bearing adju sting washer thickness.
Refer to FFD-39, "
Inspection and Adjustment".
When the backlash is small: Increase side bearing adjust ing washer thickness. Re-
fer to FFD-39, "
Inspection and Adjustment".
SDIA0009J
Runout limit: 0.18 mm (0.0071 in)
Runout limit: 0.13 mm (0.0051 in)
PDIA0646E
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