Infiniti Q45. Manual - part 773

REAR FINAL DRIVE ASSEMBLY

RFD-29

RFD

●

Pinion front bearing; make sure the J-34309-3 pinion front
bearing seat is secured tightly against the J-34309-2 gauge
anvil. Then turn the pinion front bearing pilot, J-34309-5, to
secure the bearing in its proper position.

●

Pinion rear bearing; the pinion rear bearing pilot, J-34309-8,
is used to center the pinion rear bearing only. The pinion rear
bearing locking seat, J-34309-4, is used to lock the bearing to
the assembly.

●

Installation of J-34309-9 and J-34309-16; place a suitable
2.5 mm (0.098 in) thick plain washer between J-34309-9 and
J-34309-16. Both surfaces of J-34309-9 and J-34309-16 must
be parallel with a clearance of 2.5 mm (0.098 in).

Install the pinion rear bearing inner race into gear carrier. Then
place the pinion preload shim selector tool, J-34309-1, gauge
screw assembly.

Assemble the pinion front bearing inner race and the J-34309-2
gauge anvil. Assemble them together with the J-34309-1 gauge
screw in gear carrier. Make sure that the pinion height gauge
plate, J-34309-16, will turn a full 360 degrees. Tighten the two
sections together by hand.

Turn the assembly several times to seat the bearings.

Measure the turning torque at the end of the J-34309-2 gauge
anvil using preload gauge.

SPD197A

SPD893

SPD199A

SPD770

Tool number

: ST3127S000 (J-25765- A)

Turning torque specification:

1.0 - 1.3 N·m (0.11 - 0.13 kg-m, 9 - 11 in-lb)

PDIA0566E

RFD-30

REAR FINAL DRIVE ASSEMBLY

Place the J-34309-11 “R200A” pinion height adapter onto the
gauge plate and tighten it by hand.

CAUTION:

Make sure all machined surfaces are clean.

Position the side bearing discs, J-25269-4, and arbor firmly into
the side bearing bores. Install the bearing caps and tighten bear-
ing cap mounting bolts to the specified torque. Refer to

RFD-18,

"COMPONENTS"

Select the correct standard pinion height adjusting washer thick-
ness. Select by using a standard gauge of 3 mm (0.12 in) and
your J-34309-101 feeler gauge. Measure the distance between
the J-34309-11 pinion height adapter including the standard
gauge and the arbor.

10. Write down exact measurement (the value of feeler gauge).

11. Correct the pinion height washer size by referring to the “pinion

head number”.
There are two numbers painted on the drive pinion. The first
one refers to the drive pinion and drive gear as a matched
set. This number should be the same as the number on the
drive gear. The second number is the “pinion head height
number”. It refers to the ideal pinion height from standard
for quietest operation. Use the following chart to determine
the correct pinion height washer.

SPD208A

SPD211A

SPD204A

SPD775

SPD542

REAR FINAL DRIVE ASSEMBLY

RFD-31

RFD

12. Select the correct pinion height adjusting washer. Refer to

RFD-37, "Pinion Height Adjusting Washer"

13. Remove the J-34309 differential shim selector tool from the final

drive housing. Then disassemble to retrieve the pinion bearings.

ASSEMBLY
Drive Pinion Assembly

Install front bearing outer race (1) and rear bearing outer race
(2) 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.

Select drive pinion height adjusting washer. Refer to

RFD-28,

"Pinion Gear Height"

Pinion head height number

Add or remove from the standard pinion height

adjusting washer thickness measurement

- 6
- 5
- 4
- 3
- 2
- 1

+1
+2
+3
+4
+5
+6

Add 0.06 mm (0.0024 in)
Add 0.05 mm (0.0020 in)
Add 0.04 mm (0.0016 in)
Add 0.03 mm (0.0012 in)
Add 0.02 mm (0.0008 in)
Add 0.01 mm (0.0004 in)

Use the selected washer thickness

Subtract 0.01 mm (0.0004 in)
Subtract 0.02 mm (0.0008 in)
Subtract 0.03 mm (0.0012 in)
Subtract 0.04 mm (0.0016 in)
Subtract 0.05 mm (0.0020 in)
Subtract 0.06 mm (0.0024 in)

SPD205A

Tool number

A: ST30720000 (J-25405)

B: KV40105230 (

—

)

C: ST30611000 (J-25742-1)

D: ST30613000 (J-25742-3)

PDIA0761J

RFD-32

REAR FINAL DRIVE ASSEMBLY

Install selected drive pinion height adjusting washer (2) to drive
pinion. Press pinion rear bearing inner race (1) to it, using drift.

CAUTION:

●

Pay attention to the direction of pinion height adjusting
washer. (Assemble as shown in the figure.)

●

Do not reuse pinion rear bearing inner race.

Assemble collapsible spacer to drive pinion.

CAUTION:

Do not reuse collapsible spacer.

Apply gear oil to pinion rear bearing, and assemble drive pinion
into gear carrier.

Apply gear oil to pinion front bearing, and assemble pinion front
bearing inner race to drive pinion assembly.

CAUTION:

Do not reuse pinion front bearing inner race.

Using suitable spacer (A), press the pinion front bearing inner
race to drive pinion as far as drive pinion nut can be tightened.

Using the drift, install front oil seal as shown in figure.

CAUTION:

●

Do not reuse oil seal.

●

When installing, do not incline oil seal.

●

Apply multi-purpose grease onto oil seal lips, and gear
oil onto the circumference of oil seal.

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).

Tool number

A: ST30901000 (J-26010-01)

PDIA0805J

PDIA0492E

PDIA0762J

Tool number

A: ST30720000 (J-25405)

PDIA0764J

PDIA0750J

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