Infiniti QX4 (R50). Manual — part 596
SMT955C
4.
Align dowel pin hole and mounting bolt hole of sub-oil pump
assembly with center case. Then tighten bolts.
: 7 - 9 N·m (0.7 - 0.9 kg-m, 61 - 78 in-lb)
SMT956C
5.
Apply ATF or petroleum jelly to new O-ring and install it to
transfer motor.
6.
Fit double-flat end of transfer motor shaft into slot of sub-oil
pump assembly. Then tighten bolts.
: 41 - 48 N·m (4.2 - 4.9 kg-m, 30 - 35 ft-lb)
SMT957C
Main Oil Pump
NBTF0083S03
1.
Install inner gear and outer gear in the main oil pump housing
with their identification marks facing toward center case
mounting surface side. Then, measure the side clearance.
Refer to “Main Oil Pump”, “Center Case”, TF-138.
SMT930C
2.
Install main oil pump assembly to center case assembly, and
tighten bolts.
: 7 - 9 N·m (0.7 - 0.9 kg-m, 61 - 78 in-lb)
3.
Install oil pump shaft to main oil pump, then install rear case
assembly to center case.
Refer to “Final Assembly”, TF-153.
ASSEMBLY
Center Case (Cont’d)
TF-146
SMT928C
SMT926C
Control Valve
NBTF0083S04
1.
Clean upper body, control valves and springs with cleaning
agent, and apply air blow.
2.
Dip control valves in ATF, and apply ATF to the valve-mount-
ing area of upper body.
3.
Install each control valve, spring, and plug to upper body, and
fix it with retainer plates.
CAUTION:
I
To insert control valves into upper body, place upper body
on a level surface in order to prevent flaw or damage.
I
Make sure each control valve is smoothly inserted.
4.
Install reverse balls, relief balls and relief springs, accumula-
tor pistons, valve springs and two filters to upper body.
SMT925C
5.
Install lower body and separator plate to upper body.
I
Do not reuse separator plates.
SMT962CA
6.
With lower body down, tighten two bolts in the position shown
in the figure.
7.
Apply ATF or petroleum jelly to new O-ring, and install it to
2-4WD shift solenoid valve, terminal body, line pressure switch
and 4WD solenoid valve. Install them to control valve assem-
bly.
I
Do not reuse O-rings.
SMT922CA
8.
Apply ATF or petroleum jelly to lip seals, and install them to
center case.
I
Do not reuse lip seals.
I
There are 2 kinds of lip seals (lip seal of large inner diam-
eter: 5 pieces, lip seal of small inner diameter: 2 pieces).
Confirm the position before installation.
GI
MA
EM
LC
EC
FE
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ASSEMBLY
Center Case (Cont’d)
TF-147
SMT911D
9.
Install bolts as shown in the figure, and tighten them to speci-
fied torque.
Bolt symbol
a
b
*c
d
e
f
Length under head
mm (in)
38
(1.50)
43.5
(1.713)
62
(2.44)
19
(0.75)
52
(2.05)
47
(1.85)
Q’ty
17
3
2
1
1
1
Tightening torque
N·m (kg-m, in-lb)
6.9 - 8.8 (0.70 - 0.90, 61.1 - 77.9)
*: Tighten with oil strainer.
SMT920C
10. Install control valve assembly to center case, and tighten bolts.
: 6.9 - 8.8 N·m (0.70 - 0.90 kg-m, 61.1 - 77.9 in-lb)
SMT921C
11. Secure terminal body with snap ring.
SMT919C
12. Apply ATF or petroleum jelly to O-rings, and install them to oil
strainer.
CAUTION:
Do not reuse snap ring.
13. Install oil strainer to control valve assembly.
14. Install mainshaft and clutch drum to center case. Refer to
“Mainshaft and Clutch Drum”, TF-149.
15. Install front case assembly and rear case assembly. Refer to
“Final Assembly”, TF-153.
SMT917C
Clutch Piston
NBTF0083S05
1.
Apply ATF to D-ring and lip seal, and install them to clutch pis-
ton.
ASSEMBLY
Center Case (Cont’d)
TF-148
SMT969C
2.
Set clutch piston to a clutch piston attachment (KV31103400).
SMT970C
3.
Set the clutch piston attachment to center case, and install
clutch piston, tap it lightly.
4.
Install slide needle bearing race to clutch piston.
SMT915C
5.
Remove all the liquid gasket from oil pressure check port and
inside center case. With oil pressure check plug threaded in 1
or 2 pitches, apply gasket fluid 1215 (Three Bond) to the thread
of plug, and tighten.
: 10 - 17 N·m (1.0 - 1.7 kg-m, 87 - 148 in-lb)
6.
Install mainshaft and clutch drum. Refer to “Mainshaft and
Clutch Drum”, TF-149.
SMT972C
Mainshaft and Clutch Drum
NBTF0083S06
1.
Install drive plates, driven plates and press flange to clutch
hub.
2.
Place clutch hub on a surface plate and measure dimension
“A” between snap ring mounting surface of press flange and
clutch drum sliding face of clutch hub.
CAUTION:
Measure at least 2 points, and take an average.
SMT973C
3.
Measure dimension “B” between the gear end of mainshaft
and the snap ring mounting portion.
4.
Calculate end play using dimension “A” and dimension “B”
(obtained in steps 2 and 3), and select proper retaining plate
so that the end play is within specifications.
Calculation formula:
End play = B − A − Retaining plate thickness
Standard end play:
0.2 - 0.5 mm (0.008 - 0.020 in)
Retaining plate:
Refer to SDS, TF-158.
GI
MA
EM
LC
EC
FE
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ASSEMBLY
Center Case (Cont’d)
TF-149
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