clutch INFINITI QX56 2004 Factory Service Manual

TF-144
CENTER CASE
Revision: August 20072004 QX56
12. Apply ATF or petroleum jelly to new O-rings, and install them on
oil strainer.
NOTE:
Do not reuse O-rings.
13. Install oil strainer to control valve assembly.
CLUTCH PISTON
1. Apply ATF or petroleum jelly to new D-rings, and install them to
clutch piston.
NOTE:
Do not reuse D-rings.
2. Install thrust needle bearing race to clutch piston.
3. Install clutch piston to the center case as shown.
CAUTION:
Install so the fitting protrusion of the clutch piston with
aligns the dent of the center case.
SDIA2120E
SDIA2 117 E
SDIA2189E
SDIA2190E

CENTER CASE
TF-145
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TF
Revision: August 20072004 QX56
4. Remove all the liquid gasket from oil pressure check port and
inside center case. With the new oil pressure check plug
threaded in 1 or 2 pitches, apply specified sealant or equivalent,
to the oil pressure check plug thread of plug, and tighten. Refer
to GI-45, "
Recommended Chemical Products and Sealants" .
NOTE:
Do not reuse oil pressure check plug.
5. Install mainshaft and clutch drum. Refer to TF-145, "
MAIN-
SHAFT AND CLUTCH DRUM" .
MAINSHAFT AND CLUTCH DRUM
1. Apply ATF or petroleum jelly to needle bearing, and install nee-
dle bearing, clutch drum, clutch hub and new snap ring to main-
shaft.
2. Install new snap ring to the clutch hub, using suitable tool.
NOTE:
Do not reuse snap ring.
3. Install new snap ring to clutch hub from clutch hub to mainshaft,
and secure them with snap rings.
NOTE:
Do not reuse snap rings.Oil pressure check plug : 15 N·m (1.5 kg-m, 11 in-lb)
SMT915C
SMT974C
WDIA0101E
SDIA2192E

TF-146
CENTER CASE
Revision: August 20072004 QX56
4. Install each plate into clutch drum as shown.
5. Install the return spring assembly into clutch hub.
6. Install press flange by aligning notches to the clutch hub as
shown.
7. Install the snap ring to the main shaft snap ring groove on main-
shaft, using Tool.
NOTE:
Do not reuse snap ring.
8. Install new snap rings to mainshaft.
NOTE:
Do not reuse snap ring.
SDIA2193E
SM T9 11 C
SDIA2194E
Tool number
A : ST22452000 (J-34335)
B : ST30911000 ( — )
C : KV31103300 ( — )
SD I A 2 111E
SDIA2 112 E

TF-148
CENTER CASE
Revision: August 20072004 QX56
FRONT DRIVE SHAFT AND DRIVE CHAIN
1. Install front drive shaft rear bearing, using Tool.
a. Install front drive shaft to front bearing, using Tool.
2. Install drive chain temporarily to front drive shaft and clutch
drum.
CAUTION:
Install drive chain by aligning identification marks to the
rear as shown.
3. Tap front drive shaft while keeping it upright and press-fit front
drive shaft rear bearing, using suitable tool.
CAUTION:
Be careful not to tap drive chain with tool.
4. Install front case assembly and rear case assembly. Refer to TF-149, "
Final Assembly" . Tool number
A : KV40100621 (J-25273)
B : ST30032000 (J-26010-01)
SDIA2198E
Tool number
A : KV40100621 (J-25273)
B : ST30032000 (J-26010-01)
SDIA2199E
SDIA2200E
SMT988C

SERVICE DATA AND SPECIFICATIONS (SDS)
TF-153
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TF
Revision: August 20072004 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsEDS0031B
Inspection and AdjustmentEDS0031C
CLEARANCE BETWEEN INNER GEAR AND OUTER GEAR
Unit: mm (in)
CLUTCH
Unit: mm (in)
PINION GEAR END PLAY
Unit: mm (in)
CLEARANCE BETWEEN SHIFT FORK AND SLEEVE
Unit: mm (in)
SELECTIVE PARTS
Sub-oil Pump
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Main Oil Pump
Unit: mm (in) Applied modelVK56DE
Transfer modelATX14B
Fluid capacity (Approx.)
(US qt, lmp qt)3.0 (3-1/8, 2-5/8)
Gear ratioHigh 1.000
Low 2.596
Number of teethPlanetary
gearSun gear 57
Internal gear 91
Front drive sprocket 38
Front drive shaft 38
Item Specification
Sub-oil pump 0.015 - 0.035 (0.0006 - 0.0014)
Main oil pump 0.015 - 0.035 (0.0006 - 0.0014)
Item Limit value
Drive plate1.4 (0.055)
Item Standard
Pinion gear end play 0.1 - 0.7 (0.004 - 0.028)
Item Standard
Shift fork and sleeve Less than 0.36 (0.0142)
Gear thicknessPart number*
Inner gear Outer gear
9.27 - 9.28 (0.3650 - 0.3654) 31346 0W462 31347 0W462
9.28 - 9.29 (0.3654 - 0.3657) 31346 0W461 31347 0W461
9.29 - 9.30 (0.3657 - 0.3661) 31346 0W460 31347 0W460
Gear thicknessPart number*
Inner gear Outer gear
8.27 - 8.28 (0.3256 - 0.3260) 31346 7S112 31347 7S112
8.28 - 8.29 (0.3260 - 0.3264) 31346 7S111 31347 7S111
8.29 - 8.30 (0.3264 - 0.3268) 31346 7S110 31347 7S110

TF-154
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: August 20072004 QX56
*: Always check with the Parts Department for the latest parts information.
Control Valve
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Control Valve Spring
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Return Spring
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.Mounting position
(Part name)Part number* Outer dia. Overall length
L1
(2-4 shift valve)31772 21X00 8.0 (0.315) 38.5 (1.516)
L2
(Clutch valve)31772 80X11 10.0 (0.394) 40.0 (1.575)
L4
(Pilot valve)31772 80X11 10.0 (0.394) 40.0 (1.575)
L5
(Regulator valve)31741 0W410 12.0 (0.472) 68.0 (2.677)
Mounting position
(Part name)Part number* Free length Outer dia. Overall length
L1
(2-4 shift valve spring)31742 2W500 31.85 (1.2539) 7.0 (0.276) 0.6 (0.024)
L2
(Clutch valve spring)31742 2W505 40.6 (1.598) 8.9 (0.350) 0.7 (0.028)
L4
(Pilot valve spring)31742 0W410 28.1 (1.106) 9.0 (0.354) 1.2 (0.047)
L5
(Regulator valve spring)31742 2W515 39.7 (1.563) 11.0 (0.433) 1.3 (0.051)
Stamped mark Part number* Free length
1 31521 7S111 42.7 (1.168)
2 31521 7S112 43.1 (1.697)
3 31521 7S113 43.6 (1.717)
4 31521 7S114 44.0 (1.731)
Stamped mark Part number* Free length Outer dia. Overall length
L1
(2-4 shift valve spring)31742 2W500 31.85 (1.2539) 7.0 (0.276) 0.6 (0.024)
L2
(Clutch valve spring)31742 2W505 40.6 (1.598) 8.9 (0.350) 0.7 (0.028)
L4
(Pilot valve spring)31742 0W410 28.1 (1.106) 9.0 (0.354) 1.2 (0.047)
L5
(Regulator valve spring)31742 2W515 39.7 (1.563) 11.0 (0.433) 1.3 (0.051)