2011 INFINITI QX56 oil pump

TM-262
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
TRANSMISSION ASSEMBLY
50. Remove under drive sun gear (1) from under drive carrier
assembly.
51. Install needle bearing (1) to under drive sun gear. CAUTION:
Check the direction of need le bearing. Refer to TM-222,
"Location of Needle Bearings and Bearing Races".
52. Install O-ring (1) to oil pump assembly.
53. Install seal ring (1) to oil pump assembly.
54. Install bearing race (1) to oil pump assembly.
JPDIA1112ZZ
JPDIA1113ZZ
JPDIA1110ZZ
JSDIA1721ZZ
J P D I A 1111 Z Z
Revision: 2010 May2011 QX56

TRANSMISSION ASSEMBLYTM-263
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
55. Install under drive sun gear (with needle bearing) (1) to oil pump assembly (2).
56. Install oil pump assembly (with under drive sun gear) to trans- mission case.
CAUTION:
Apply ATF to oil pump bearing.
57. Apply recommended sealant to oil pump assembly as shown in the figure.
CAUTION:
Completely remove all moisture, oil and old sealant, etc.
from the oil pump mounting bolts and oil pump mounting
bolt mounting surfaces.
58. Tighten oil pump bolts ( ) to the specified torque. CAUTION:
Apply ATF to oil pump bushing.
59. Install O-ring to input clutch assembly.
JSDIA1712ZZ
SCIA2811E
: Genuine RTV silicone sealant or equivalent. Refer to
GI-22, "
Recommended Chemical Products and Seal-
ants".
JSDIA1720ZZ
JPDIA1108ZZ
SCIA5011E
Revision: 2010 May2011 QX56

TRANSMISSION ASSEMBLYTM-267
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
74. Pour ATF into torque converter. Approximately 2 liter (2-1/8 US qt, 1-3/4 Imp qt) of ATF is
required for a new torque converter.
 When reusing old torque co nverter, add the same amount
of ATF as was drained.
75. Install torque converter while aligning notches of torque con- verter with notches of oil pump.
CAUTION:
Install torque converte r while rotating it.
76. Measure dimension “A” to make sure that torque converter is in proper position.
InspectionINFOID:0000000006226919
INSPECTION AFTER REMOVAL
Oil Pan
Check foreign materials in oil pan to help determine causes of mal-
function. If the ATF is very dark, smells burned, or contains foreign
particles, the frictional material (clutches, band) may need replace-
ment. A tacky film that will not wipe clean indicates varnish build up.
Varnish can cause valves, servo, and clutches to stick and can
inhibit pump pressure.
If frictional material is detected, perform A/T fluid cooler
cleaning. Refer to TM-97, "
Cleaning".
Torque Converter
SAT428DA
SCIA5010E
B: Scale
C : Straightedge
Dimension “A” : Refer to TM-297, "Torque Converter".
JPDIA0042ZZ
SCIA5199E
Revision: 2010 May2011 QX56

TM-270
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON
OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON
Exploded ViewINFOID:0000000006226920
DisassemblyINFOID:0000000006226921
1. Remove snap ring (1) from oil pump assembly using a flat-
bladed screwdriver (A).
CAUTION:
 Be careful not to scratch oil pump cover and 2346 brakeretaining plate.
 Be careful not to damage snap ring.
1. Oil pump housing oil seal 2. Oil pump housing 3. O-ring
4. Oil pump cover 5. O-ring 6. D-ring
7. D-ring 8. Front brake piston 9. Front brake spring retainer
10. Snap ring 11. D-ring 12. D-ring
13. 2346 brake piston 14. 2346 brake spring retainer 15. Snap ring
16. Seal ring 17. Dish plate 18. Driven plate
19. Drive plate 20. Retaining plate 21. Snap ring
: Apply Liquid Gasket (Three Bond 1215) or equivalent.
Refer to GI-4, "
Components" for symbols not described on the above.
JPDIA1089GB
JPDIA1090ZZ
Revision: 2010 May2011 QX56

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTONTM-271
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
2. Remove 2346 brake component part (retaining plate, drive plate, driven plate, and dish pl ate) (1) from oil pump assembly.
3. Remove seal ring (1) from oil pump assembly.
4. Set the clutch spring compressor (SST: KV31103800) (A) on front brake spring retainer and remove snap ring (fixing front
brake spring retainer) (1) from oil pump assembly while com-
pressing return spring.
CAUTION:
Be careful not to expand snap ring excessively.
5. Remove front brake spring retainer (1) from oil pump assembly.
6. Set the clutch spring compressor [SST: KV31102400 (J-34285 and J-34285-87)] (A) on 2346 brake spring retainer and remove
snap ring (fixing 2346 brake spring retainer) (1) from oil pump
assembly while compressing return spring.
CAUTION:
Be careful not to expand snap ring excessively.
JPDIA1091ZZ
JPDIA1092ZZ
JSDIA1729ZZ
JPDIA1094ZZ
B: Press
JSDIA1730ZZ
Revision: 2010 May2011 QX56

TM-272
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON
7. Remove 2346 brake spring retainer (1) from oil pump assembly.
8. Remove front 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.
9. Remove D-ring (inner) (1) and D-ring (outer) (2) from front brake piston.
JPDIA1096ZZ
A : Front brake pressure hole
JPDIA1097ZZ
JPDIA1098ZZ
Revision: 2010 May2011 QX56

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTONTM-273
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
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