INFINITI QX56 2011 Factory Service Manual

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTONTM-273
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
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10. Remove 2346 brake piston (1) from oil pump assembly with compressed air. Refer to TM-222, "
Oil Channel".
CAUTION:
Care should be taken not to ab ruptly blow air. It makes pis-
ton incline, as the result, it becomes hard to disassemble
the piston.
11. Remove D-ring (large) (1) and D-ring (small) (2) from 2346 brake piston.
12. loosen bolts in numerical order shown in the figure and remove oil pump housing from oil pump cover.
13. Remove oil pump housing oil seal using a flat-bladed screw- driver.
CAUTION:
Be careful not to scratch oil pump housing.
A : 2346 brake pressure hole
JPDIA1099ZZ
JPDIA1100ZZ
: Bolt
JPDIA1101ZZ
SCIA2840E
Revision: 2010 May2011 QX56

TM-274
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON
14. Remove O-ring from oil pump housing.
15. Remove O-ring (1) from oil pump cover.
AssemblyINFOID:0000000006226922
1. Install O-ring (1) to oil pump cover.
2. Install O-ring to oil pump housing.
SCIA2841E
JPDIA1102ZZ
JPDIA1102ZZ
SCIA2841E
Revision: 2010 May2011 QX56

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTONTM-275
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
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3. Using the drift, install oil pump housing oil seal to the oil pump housing until it is flush.
CAUTION:
 Never reuse oil seal.
 Apply ATF to oil seal.
4. Install oil pump housing to oil pump cover and tighten bolts ( ) to the specified torque in numerical order shown in the figure
after temporarily tightening them.
5. Install D-ring (large) (1) and D-ring (small) (2) to 2346 brake pis- ton.
6. Install 2346 brake piston (1) to oil pump assembly.
7. Install D-ring (inner) (1) and D-ring (outer) (2) to front brake pis- ton.
SCIA5313E
JPDIA1101ZZ
JPDIA1100ZZ
JSDIA1722ZZ
JPDIA1098ZZ
Revision: 2010 May2011 QX56

TM-276
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON
8. Install front brake piston (1) to oil pump assembly.
9. Install 2346 brake spring retainer (1) to oil pump assembly.
10. Set the clutch spring compressor [SST: KV31102400 (J-34285
and J-34285-87)] (A) on 2346 brake spring retainer and install
snap ring (fixing 2346 brake spring retainer) (1) to oil pump
assembly while compressing return spring.
CAUTION:
Be careful not to exp and snap ring excessively.
11. Install front brake spring retainer (1) to oil pump assembly.
12. Set the clutch spring compressor (SST: KV31103800) (A) on front brake spring retainer and install snap ring (fixing front
brake spring retainer) (1) to oil pump assembly while compress-
ing return spring.
CAUTION:
Be careful not to exp and snap ring excessively.
JSDIA1723ZZ
JPDIA1096ZZ
B: Press
JSDIA1730ZZ
JPDIA1094ZZ
JSDIA1729ZZ
Revision: 2010 May2011 QX56

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTONTM-277
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
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13. Install seal ring (1) to oil pump assembly.
14. Install 2346 brake retaining plate, drive plates, driven plates, dish plate and snap ring to oil pump assembly.
CAUTION:
 Check the order of plates.
 Never install snap ring mati ng part (A) to the clearance
groove [(B) shown in the figure] of oil pump cover.
Inspection and AdjustmentINFOID:0000000006226923
INSPECTION AFTER DISASSEMBLY
Each Snap Ring
Check for deformation, fatigue or damage. If necessary, replace snap ring.
Each Spring Retainer
Check for deformation, fatigue or damage. If necessary, replace spring retainer.
2346 Brake Drive Plates
Check facing for burns, cracks or damage. If nec essary, replace drive plates and driven plates.
2346 Brake Retaining Plate, Driven Plates and Dish Plate
Check facing for burns, cracks or damage. If necessary, replace retaining plate and dish plate.
INSPECTION AFTER ASSEMBLY
2346 Brake Clearance
JPDIA1092ZZ
1 : Dish plate
2 : Driven plate (five pieces)
3 : Drive plate (five pieces)
4 : Retaining plate
5: Snap ring
JPDIA1153ZZ
JSDIA1724ZZ
Revision: 2010 May2011 QX56

TM-278
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON
Set a dial indicator (A) as shown in the figure. Blow air into 2346
brake oil pressure hole (B), and measure 2346 brake clearance. If
clearance is outside the specified value, adjust clearance by select-
ing an appropriate snap ring (1). Refer to
TM-222, "
Oil Channel".
CAUTION:
Never exceed the specified air pressure value.
Air pressure
: 300kPa (3.06 kg/cm
2, 43.5 psi)
2346 brake
clearance : Refer to
TM-298, "
2346 Brake Clear-
ance".
JPDIA1148ZZ
Revision: 2010 May2011 QX56

UNDER DRIVE CARRIER, FRONT BRAKE HUBTM-279
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
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UNDER DRIVE CARRIER, FRONT BRAKE HUB
Exploded ViewINFOID:0000000006226924
DisassemblyINFOID:0000000006226925
1. Remove snap ring (1) from front brake hub using a flat-bladed screwdriver.
CAUTION:
 Be careful not to scratch fr ont brake hub and under drive
carrier assembly.
 Be careful not to damage snap ring.
2. Remove under drive carrier assembly (1) from front brake hub.
1. Snap ring 2. Under drive carrier assembly 3. Front brake hub
JPDIA1127ZZ
JPDIA1128ZZ
JPDIA1129ZZ
Revision: 2010 May2011 QX56

TM-280
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
UNDER DRIVE CARRIER
, FRONT BRAKE HUB
3. Remove snap ring (1) from front brake hub using a flat-bladed
screwdriver.
CAUTION:
 Be careful not to scratch front brake hub.
 Be careful not to damage snap ring.
AssemblyINFOID:0000000006226926
1. Install snap ring (1) to front brake hub.CAUTION:
Be careful not to damage snap ring.
2. Install under drive carrier assembly (1) to front brake hub.
3. Install snap ring (1) to front brake hub using a flat-bladed screw- driver.
CAUTION:
 Be careful not to scratch front brake hub.
 Be careful not to damage snap ring.
InspectionINFOID:0000000006226927
INSPECTION AFTER REMOVAL
 Each Snap Ring
Check for deformation, fatigue or damage. If necessary, replace snap ring.
 Under Drive Carrier Assembly
Check for deformation, fatigue or damage. If nec essary, replace under drive carrier assembly.
 Front Brake Hub
JPDIA1130ZZ
JPDIA1130ZZ
JPDIA1129ZZ
JPDIA1128ZZ
Revision: 2010 May2011 QX56

UNDER DRIVE CARRIER, FRONT BRAKE HUBTM-281
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
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Check for deformation, fatigue or damage. If necessary, replace front brake hub.
Revision: 2010 May2011 QX56

TM-282
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
FRONT CARRIER, INPUT CLUT
CH, REAR INTERNAL GEAR
FRONT CARRIER, INPUT CLUTCH, REAR INTERNAL GEAR
Exploded ViewINFOID:0000000006226928
1. Needle bearing 2. Snap ring 3. Front carrier assembly
4. Needle bearing 5. O-ring 6. Seal ring
7. Input clutch drum 8. Input clutch driven plate 9. Input clutch drive plate
10. Input clutch retaining plate 11. Snap ring 12. Rear internal gear
Refer to GI-4, "
Components" for symbols in the figure.
JPDIA1122GB
Revision: 2010 May2011 QX56