Infiniti FX35, FX50 (S51). Manual - part 586

 

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Infiniti FX35, FX50 (S51). Manual - part 586

 

 

DRIVE PINION

DLN-179

< UNIT DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: F160A]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

Never 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 

DLN-167, "Adjustment"

 and 

DLN-179, "Adjustment"

.

Recheck above items. Readjust the above description, if necessary.

15. Check total preload torque. Refer to 

DLN-167, "Adjustment"

.

16. Install carrier cover. Refer to 

DLN-162, "Assembly"

.

Adjustment

INFOID:0000000005249209

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.
If unable to find a washer of desired thickness, use a washer with thickness closest to the calculated
value.

PINION BEARING PRELOAD

Assemble the drive pinion parts if they are disassembled. Refer to 

DLN-177, "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).

Washer selection equation:

T = T

0

 + (t

1

 t

2

)

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) 

 (

×

 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

SDIA0249J

PDIA0799J

DLN-180

< UNIT DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: F160A]

DRIVE PINION

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.

7.

Remove companion flange, after adjustment.

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.

b.

If the runout value is still outside of the limit after the phase has been changed, possible cause will be an
assembly malfunction of drive pinion and pinion bearing and malfunction of pinion bearing. Check for
these items and repair if necessary.

A: Preload gauge [SST: ST3127S000 (J-25765-A)]

Standard

Pinion bearing preload

: Refer to 

DLN-182, "Pre-

load Torque"

.

When the preload torque is large:

Decrease the drive pinion bearing adjusting washer and drive pinion adjusting 
washer thickness.For select parts refer to parts information.

When the preload is small:

Increase the drive pinion bearing adjusting washer and drive pinion adjusting 
washer thickness.For select parts refer to parts information.

PDIA0802J

Limit

Companion flange runout

: Refer to 

DLN-182, "Com-

panion Flange Runout"

.

Limit

Companion flange runout

: Refer to 

DLN-182, "Com-

panion Flange Runout"

.

JSDIA0116ZZ

DRIVE PINION

DLN-181

< UNIT DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: F160A]

C

E

F

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A

B

DLN

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c.

If the runout value is still outside of the limit after the check and repair, replace companion flange.

Inspection After Disassembly

INFOID:0000000005249210

DRIVE GEAR AND DRIVE PINION

• Clean up the disassembled parts.
• If the gear teeth never mesh or line-up correctly, determine the cause and adjust or replace as necessary.
• If the gears are worn, cracked, damaged, pitted or chipped (by friction) noticeably, replace with new drive

gear and drive pinion as a set.

BEARING

• Clean up the disassembled parts.
• If any chipped (by friction), pitted, worn, rusted or scratched marks, or unusual noise from the bearing is

observed, replace as a bearing assembly (as a new set).

SIDE GEAR AND PINION MATE GEAR

• Clean up the disassembled parts.
• If any cracks or damage on the surface of the tooth is found, replace.
• If any worn or chipped mark on the contact sides of the thrust washer is found, replace.

SIDE GEAR THRUST WASHER AND PINION MATE THRUST WASHER

• Clean up the disassembled parts.
• If it is chipped (by friction), damaged, or unusually worn, replace.

OIL SEAL

• Whenever disassembled, replace.
• If wear, deterioration of adherence (sealing force lips), or damage is detected on the lips, replace them.

DIFFERENTIAL CASE

• Clean up the disassembled parts.
• If any wear or crack on the contact sides of the differential case is found, replace.

COMPANION FLANGE

• Clean up the disassembled parts.
• If any chipped mark [about 0.1 mm, (0.004 in)] or other damage on the contact sides of the lips of the com-

panion flange is found, replace.

DLN-182

< SERVICE DATA AND SPECIFICATIONS (SDS) 

[FRONT FINAL DRIVE: F160A]

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

General Specifications

INFOID:0000000005249211

Drive Gear Runout

INFOID:0000000005249212

Unit: mm (in)

Differential Side Gear Clearance

INFOID:0000000005249213

Unit: mm (in)

Preload Torque

INFOID:0000000005249214

Unit: N·m (kg-m, in-lb)

Backlash

INFOID:0000000005249215

Unit: mm (in)

Companion Flange Runout

INFOID:0000000005249216

Unit: mm (in)

Applied model

AWD

VQ35HR

VK50VE

A/T

Final drive model

F160A

Gear ratio

3.692

3.538

Number of teeth (Drive gear/Drive pinion)

48/13

46/13

Oil capacity (Approx.)

 (US pt, lmp pt)

0.65 (1-3/8, 1-1/8)

Number of pinion gears

2

Drive pinion adjustment spacer type

Solid

Item

Limit

Drive gear back face runout

 0.05 (0.0020)

Item

Standard

Side gear backlash (Clearance between side gear and differential 
case)

0.2 (0.008) or less

(Each gear should rotate smoothly without excessive resistance 

during differential motion.)

Item

Standard

Pinion bearing (P

1

)

0.78 – 1.57 (0.08 – 0.16, 7 – 13)

Side bearing (P

2

)

0.78 – 1.08 (0.08 – 0.11, 7 – 9)

Side bearing to pinion bearing (Total preload)
(Total preload = P

1

 + P

2

)

1.56 – 2.65 (0.16 – 0.27, 14 – 23)

Item

Standard

Drive gear to drive pinion gear

0.10 – 0.15 (0.0039 – 0.0059)

Item

Limit

Companion flange face runout

0.18 (0.0071)

Inner side of the companion flange runout

 0.13 (0.0051)

 

 

 

 

 

 

 

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