Infiniti QX4 (R50). Manual — part 597

SMT974C

5.

Install clutch drum, needle bearing and clutch hub to
mainshaft, and secure them with snap ring.

I

Do not reuse snap ring.

SMT975C

6.

Install each clutch to clutch drum.

SMT911C

7.

Align the notch of return spring assembly with the pin of clutch
hub, and install it.

SMT977C

8.

Install press flange (with the holes indicated by arrows aligned
with pins of clutch hub).

SMT909C

9.

Install washer.

ASSEMBLY

Center Case (Cont’d)

TF-150

SMT907C

10. Pass mainshaft through snap ring. Set a drift (KV31103300),

a support ring (KV40104710), a support ring (ST27863000)
and a drift (ST35271000) to press flange at the position shown
in the figure, and press snap ring until it fits into snap ring
groove on mainshaft.

I

Do not reuse snap ring.

SMT908C

11. Fix snap ring to mainshaft.

SMT905C

12. Install thrust needle bearing to press flange.

SMT982C

13. Apply petroleum jelly to new seal rings, and install them to

mainshaft. Measure clearance between seal ring and groove
using feeler gauge.

Standard clearance:

0.05 - 0.30 mm (0.0020 - 0.0118 in)

Limit clearance:

0.30 mm (0.0118 in)

I

Pass seal ring from mainshaft rear end to install it.

Seal ring dimension:

Refer to SDS, TF-159.

SMT983C

14. Install mainshaft rear bearing to center case.

GI

MA

EM

LC

EC

FE

AT

PD

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

ASSEMBLY

Center Case (Cont’d)

TF-151

SMT984C

15. Place puller (ST30911000) to mainshaft rear bearing inner

race, and set it to press stand.

16. Place adapter (ST33061000) to the tip of mainshaft, and press

mainshaft into center case.

SMT903CA

17. Install baffle plate to center case, and tighten bolts.

: 3.7 - 5.0 N·m (0.38 - 0.51 kg-m, 33.0 - 44.3 in-lb)

18. Install front drive shaft and drive chain. Refer to “Front Drive

Shaft and Drive Chain” below.

19. Install front case assembly and rear case assembly.

Refer to “Final Assembly”, TF-153.

SMT986C

Front Drive Shaft and Drive Chain

NBTF0083S07

1.

Place a base (ST30032000) to front drive shaft rear bearing
inner race, and press it using a drift (KV40100621).

SMT987C

2.

Place base (ST30032000) to front drive shaft front bearing
inner race, and press it using the drift (KV40100621).

SMT988C

3.

Install drive chain temporarily to front drive shaft and drive gear
of clutch drum.

4.

Tap front drive shaft with a plastic hammer while keeping it
upright and press-fit front drive shaft rear bearing.

I

Be careful not to tap drive chain with a hammer.

ASSEMBLY

Center Case (Cont’d)

TF-152

SMT989C

5.

Align claw of oil gutter with center case, and install it.

6.

Install front case assembly and rear case assembly.
Refer to “Final Assembly”, TF-153.

SMT891C

Final Assembly

NBTF0084

1.

Install C-rings to mainshaft rear bearing.

SMT889C

2.

Check speedometer drive gear teeth for abnormal wear. Set
speedometer drive gear properly on mainshaft, and secure it
with snap ring.

I

Do not reuse snap ring.

SMT893C

3.

Apply sealing fluid 518 (Locktite) to the entire center case
mounting surface of front case as shown in the figure.

CAUTION:

Remove all foreign materials such as water, oil and grease
from center case and front case mating surfaces.

GI

MA

EM

LC

EC

FE

AT

PD

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

ASSEMBLY

Center Case (Cont’d)

TF-153