torque INFINITI M35 2007 Factory Service Manual

PREPARATION
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FFD
Revision: 2007 April2007 M35/M45
Commercial Service ToolsNDS000EN
KV38100200
(—)
Drift
a: 65 mm (2.56 in) dia.
b: 49 mm (1.93 in) dia.Installing side shaft oil seal
(J-8129)
Spring gaugeMeasuring turning torque Tool number
(Kent-Moore No.)
Tool nameDescription
ZZA1143D
NT127
Tool nameDescription
Flange wrench Removing and installing drive pinion lock nut
Spacer
a: 60 mm (2.36 in) dia.
b: 36 mm (1.42 in) dia.
c: 30 mm (1.18 in)Installing pinion front bearing inner race
Power toolLoosening bolts and nuts
NT035
ZZA1133D
PBIC0190E

FFD-8
DIFFERENTIAL GEAR OIL
Revision: 2007 April2007 M35/M45
DIFFERENTIAL GEAR OILPFP:KLD30
Changing Differential Gear OilNDS000EQ
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-15, "
COM-
PONENTS" .
CAUTION:
Do not 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-15, "
COMPO-
NENTS" .
CAUTION:
Do not reuse gasket.
Checking Differential Gear OilNDS000ER
OIL LEAKAGE AND OIL LEVEL

Make sure that oil is not leaking from final drive assembly or around it.

Remove filler plug (1) and check oil level from filler plug mount-
ing hole as shown in the figure.
CAUTION:
Do not start engine while checking oil level.

Set a gasket on filler plug (1) and install it on final drive assem-
bly. Refer to FFD-15, "
COMPONENTS" .
CAUTION:
Do not reuse gasket.
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Oil grade and Viscosity:
Refer to MA-12, "
Fluids and Lubricants" .
Oil capacity:
Approx. 0.65 (1-3/8 US pt, 1-1/8 Imp pt)
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FFD-10
FRONT OIL SEAL
Revision: 2007 April2007 M35/M45
INSTALLATION
1. Apply multi-purpose grease to front oil seal lips.
2. Using the drifts, install front oil seal as shown in figure.
CAUTION:

Do not reuse oil seal.

When installing, do not incline oil seal.
3. Align the matching mark (B) of drive pinion with the matching
mark (A) of companion flange, and then install the companion
flange (1).
4. Apply anti-corrosion oil to the thread and seat of new drive pin-
ion lock nut, and temporarily tighten drive pinion lock nut to drive
pinion.
CAUTION:
Do not reuse drive pinion lock nut.
5. Tighten to drive pinion lock nut, while adjust total preload torque.
CAUTION:

Adjust to the lower limit of the drive pinion lock nut tight-
ening torque first.

After adjustment, rotate drive pinion back and forth 2 to 3
times to check for unusual noise, rotation malfunction,
and other malfunctions.

If measured value is out of the specification, remove final
drive assembly and disassemble drive pinion parts to check
and adjust each part. Refer to FFD-13, "
Removal and Installa-
tion" and FFD-15, "Disassembly and Assembly" .
6. Install front propeller shaft. Refer to PR-5, "
Removal and Installation" .
7. Install side shaft assembly.
8. Install front drive shaft both. Refer to FA X - 11 , "
Removal and Installation" .
9. Refill gear oil to the final drive and check oil level. Refer to FFD-8, "
FILLING" .
10. Check the final drive for oil leakage. Refer to FFD-8, "
OIL LEAKAGE AND OIL LEVEL" . Tool number A: ST33400001 (J-26082)
B: KV38102510 ( — )
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Tool number A: ST3127S000 (J-25765-A)
Drive pinion lock nut tightening torque:
127.4 - 245.0 N·m (13.0 - 25.0 kg-m, 94 - 181 ft-lb)
Total preload torque:
1.56 - 2.65 N·m (0.16 - 0.27 kg-m, 14 - 23 in-lb)
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FFD-14
FRONT FINAL DRIVE ASSEMBLY
Revision: 2007 April2007 M35/M45
15. Remove front final drive assembly with power tool.
INSTALLATION
Note the following, and installation is in the reverse order of removal.

Refer to FFD-13, "COMPONENTS" about each tightening torque.

When installing the side shaft, apply multi-purpose grease to contact surface of side shaft and side shaft
oil seal.

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 carrier cover (3), lower part
of gear carrier (4).
CAUTION:
Align the mating faces of gear carrier and oil pan for instal-
lation.

When installing breather hoses (1) and tube (2), refer to the fig-
ure.
CAUTION:
Make sure there are no pinched or restricted areas on the
breather hose caused by bending or winding when install-
ing 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, "
Checking Differential
Gear Oil" .
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Angle “A”: 0 - 30°
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FFD-16
FRONT FINAL DRIVE ASSEMBLY
Revision: 2007 April2007 M35/M45
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 opera-
tion 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.
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-11, "
Components" and the followings for the symbols in the figure.
:Apply gear oil.
:Apply anti-corrosion oil.
:Apply Genuine Silicone RTV or equivalent. Refer to GI-47, "
Recommended Chemical Products and Sealants" .
:Apply Genuine Medium Strength Thread Locking Sealant or equivalent. Refer to GI-47, "
Recommended Chemical
Products and Sealants" .
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)
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When the preload torque is large
On pinion bearings: Decrease the drive pinion bearing adjusting washer and drive pinion
adjusting washer thickness. Refer to FFD-36, "
Drive Pinion Bearing
Adjusting Washer" and FFD-36, "Drive Pinion Adjusting Washer" .
On side bearings: Increase the side bearing adjusting shim thickness. Refer to FFD-36,
"Side Bearing Adjusting Shim" .
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-36, "
Drive Pinion Bearing
Adjusting Washer" and FFD-36, "Drive Pinion Adjusting Washer" .
On side bearings: Decrease the side bearing adjusting shim thickness. Refer to FFD-36,
"Side Bearing Adjusting Shim" .

FFD-26
FRONT FINAL DRIVE ASSEMBLY
Revision: 2007 April2007 M35/M45
3. Press-fit side bearing outer race into gear carrier with tool.
CAUTION:

At first, using a hammer, tap bearing outer race until it
becomes flat to gear carrier.

Do not reuse side bearing outer race.
4. Place the differential case assembly into gear carrier.
5. Install side bearing adjusting shim before disassembling or shim
which thickness is the same as the one before disassembling.
6. Install side retainer assembly to gear carrier.
CAUTION:
Do not install O-ring.
7. Install side retainer mounting bolts to the specified torque. Refer
to FFD-15, "
COMPONENTS" .
8. Measure the turning torque of the gear carrier at the drive gear
mounting bolts with a spring gauge.Tool number A: ST30611000 (J-25742-1)
B: KV31103000 (J-38982)
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Tool number : — (J-8129)
Specification:
34.2 - 39.2 N (3.5 - 4.0 kg, 7.7 - 8.8 lb) of pulling force at
the drive gear bolt
SPD194A

FRONT FINAL DRIVE ASSEMBLY
FFD-27
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Revision: 2007 April2007 M35/M45
9. If the turning torque is outside the specification, use a thicker/
thinner side bearing adjusting shim to adjust. Refer to FFD-36,
"Side Bearing Adjusting Shim" .
10. Record the total amount of shim thickness required for the cor-
rect carrier side bearing preload.
Pinion Gear Height
If the hypoid gear set has been replaced, select the pinion height adjusting washer.
1. Use the formula below to calculate pinion height adjusting
washer thickness.
2. Select the proper pinion height adjusting washer. Refer to FFD-36, "
Pinion Height Adjusting Washer" .
If impossible find the desired thickness of washer, use washer with thickness closest to the calculated
value.
Pinion Bearing Preload

Assemble the drive pinion parts if they are disassembled. Refer to FFD-28, "Drive Pinion Assembly" .
1. Make sure all parts are clean. Also, make sure the bearings are well lubricated with gear oil.
2. Install companion flange (1).
NOTE:
When reusing drive pinion, align the matching mark (B) of drive
pinion with the matching mark (A) of companion flange, and then
install companion flange (1).If the turning torque is less than the specified range:
Decrease the side bearing adjusting shim thickness.
If the turning torque is greater than the specification:
Increase the side bearing adjusting shim thickness.
SPD772
Washer selection equation:
T = T
0 + (t1 - t2 )
T: Correct washer thickness
T
0 : Removed washer thickness
t
1 : Old drive pinion head letter “H × 0.01”
(“H”: machined tolerance 1/100 mm × 100)
t
2 : New drive pinion head letter “H × 0.01”
(“H”: machined tolerance 1/100 mm × 100)
Example:
T = 3.21 + [(2 × 0.01) - (-1 × 0.01)] = 3.24
T
0 :3.21
t
1 :+2
t
2 :-1
Example:
Calculated value... T = 3.22 mm
Used washer... T = 3.21 mm
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FFD-28
FRONT FINAL DRIVE ASSEMBLY
Revision: 2007 April2007 M35/M45
3. Temporarily tighten removed drive pinion lock nut to drive pinion.
NOTE:
Use removed drive pinion lock nut only for the preload measure-
ment.
4. Rotate drive pinion at least 20 times to check for smooth opera-
tion of the bearing.
5. Tighten to drive pinion lock nut, while adjust pinion bearing pre-
load torque.
CAUTION:

Adjust to the lower limit of the drive pinion lock nut tight-
ening torque first.

After adjustment, rotate drive pinion back and forth 2 to 3
times to check for unusual noise, rotation malfunction,
and other malfunctions.
6. If the pinion bearing preload torque is outside the specification,
use a thicker/thinner drive pinion bearing adjusting washer and drive pinion adjusting washer to adjust.
Refer to FFD-36, "
Drive Pinion Bearing Adjusting Washer" and FFD-36, "Drive Pinion Adjusting Washer" .
7. Remove companion flange, after adjustment.
ASSEMBLY
Drive Pinion Assembly
1. Install pinion front and rear bearing outer races using drifts.
CAUTION:

At first, using a hammer, tap bearing outer race until it
becomes flat to gear carrier.

Do not reuse pinion front and rear bearing outer race.Tool number A: ST3127S000 (J-25765-A)
Drive pinion lock nut tightening torque:
127.4 - 245.0 N·m (13.0 - 25.0 kg-m, 94 - 181 ft-lb)
Pinion bearing preload:
0.78 - 1.57 N·m (0.08 - 0.16 kg-m, 7 - 13 in-lb)
When the preload torque is large:
Decrease the drive pinion bearing adjusting washer and drive pinion adjusting
washer thickness.
When the preload is small:
Increase the drive pinion bearing adjusting washer and drive pinion adjusting
washer thickness.
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Tool number A: ST37820000 ( — )
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FFD-30
FRONT FINAL DRIVE ASSEMBLY
Revision: 2007 April2007 M35/M45
10. Install companion flange (1).
NOTE:
When reusing drive pinion, align the matching mark (B) of drive
pinion with the matching mark (A) of companion flange, and then
install companion flange (1).
11. Apply anti-corrosion oil to the thread and seat of new drive pin-
ion lock nut, and temporarily tighten drive pinion lock nut to drive
pinion.
CAUTION:
Do not reuse drive pinion lock nut.
12. Tighten to drive pinion lock nut, while adjust pinion bearing pre-
load torque.
CAUTION:

Adjust to the lower limit of the drive pinion lock nut tight-
ening torque first.

After adjustment, rotate drive pinion back and forth 2 to 3
times to check for unusual noise, rotation malfunction,
and other malfunctions.
13. Install differential case assembly. Refer to FFD-30, "
Differential
Assembly" .
CAUTION:
Do not install carrier cover yet.
14. Check and adjust drive gear runout, tooth contact, drive gear to drive pinion backlash, and companion
flange runout. Refer to FFD-17, "
Drive Gear Runout" , FFD-17, "Tooth Contact" , FFD-19, "Backlash" ,
FFD-19, "
Companion Flange Runout" .
Recheck above items. Readjust the above description, if necessary.
15. Check total preload torque. Refer to FFD-16, "
Total Preload Torque" .
16. Install carrier cover. Refer to FFD-30, "
Differential Assembly" .
Differential Assembly
1. Install side gear thrust washers with the same thickness as the
ones installed prior to disassembly or reinstall the old ones on
the side gears.
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Tool number A: ST3127S000 (J-25765-A)
Drive pinion lock nut tightening torque:
127.4 - 245.0 N·m (13.0 - 25.0 kg-m, 94 - 181 ft-lb)
Pinion bearing preload:
0.78 - 1.57 N·m (0.08 - 0.16 kg-m, 7 - 13 in-lb)
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FFD-32
FRONT FINAL DRIVE ASSEMBLY
Revision: 2007 April2007 M35/M45
9. Install drive gear on the mounting bolts, and then tighten to the
specified torque. Refer to FFD-15, "
COMPONENTS" .
CAUTION:
Tighten bolts in a crisscross fashion.
10. Press side bearing inner races to differential case, using the drift
and the base.
CAUTION:
Do not reuse side bearing inner race.
11. Press-fit side bearing outer race into side retainer with the drift
and the drift bar.
CAUTION:

At first, using a hammer, tap bearing outer race until it
becomes flat to side retainer.

Do not reuse side bearing outer race.
12. Press-fit side bearing outer race into gear carrier with the drift
and the drift bar.
CAUTION:

At first, using a hammer, tap bearing outer race until it
becomes flat to gear carrier.

Do not reuse side bearing outer race.
13. Place the differential case assembly into gear carrier.
14. Measure side bearing preload. If necessary, select the appropri-
ate side bearing adjusting shim. Refer to FFD-25, "
Side Bearing
Preload" .
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Tool number A: ST33230000 (J-25805-01)
B: ST33061000 (J-8107-2)
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Tool number A: ST30611000 (J-25742-1)
B: KV31103000 (J-38982)
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Tool number A: ST30611000 (J-25742-1)
B: KV31103000 (J-38982)
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