2011 INFINITI QX56 brake

TRANSMISSION ASSEMBLYTM-253
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
28. Install direct clutch assembly in reverse brake. CAUTION:
Make sure that drum support edge surface and direct clutch
inner boss edge surface come to almost same place.
29. Install high and low reverse clutch assembly in direct clutch.
30. Align the drive plate using a flat-bladed screwdriver.
31. Install high and low reverse clutch hub, mid sun gear assembly, and rear sun gear assembly as a unit.
CAUTION:
SCIA5019E
SCIA2306E
SCIA3169E
SCIA5018E
Revision: 2010 May2011 QX56

TM-256
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
TRANSMISSION ASSEMBLY
40. Install input clutch assembly (with front carrier assembly and
rear internal gear) (1) to transmission case.
CAUTION:
Check that the needle bearing (2) is securely positioned. If
the needle bearing position is misaligned, adjust it to the
specified position.
41. Install 1st one-way clutch (1) to front brake hub (with under drive carrier) (2).
42. Check operation of 1st one-way clutch.
a. Hold 1st one-way clutch.
b. Check front brake hub for correct locking and unlocking direc- tions.
CAUTION:
If not shown in figure, check installati on direction of 1st one-way clutch.
43. Install under drive carrier (with 1st one-way clutch) (1) to trans- mission case.
JSDIA1714ZZ
: Unlocked
: Locked
JSDIA1713ZZ
JSDIA1715ZZ
Revision: 2010 May2011 QX56

TRANSMISSION ASSEMBLYTM-257
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
44. Install snap ring (1) to transmission case. CAUTION:
Be careful not to damage snap ring.
45. Install front brake retaining plate (thin) (1), front brake drive plates (2), front brake driven pl ate (3), and front brake retaining
plate (thick) (4) to transmission case.
CAUTION:
Check order of plates.
46. Install needle bearing (1) to under drive carrier assembly. CAUTION:
Check the direction of needle bearing. Refer to TM-222,
"Location of Needle Bearings and Bearing Races".
47. Install under drive sun gear (1) to under drive carrier assembly.
48. Adjustment of total end play “T”.  Measure clearance between bearing race (1) and oil pump
cover (2).
 Select proper thickness of bearing race so that end play is within specifications.
JPDIA1116ZZ
: Front
JPDIA1154ZZ
JPDIA1114ZZ
JPDIA1112ZZ
JSDIA1696ZZ
Revision: 2010 May2011 QX56

TM-260
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
TRANSMISSION ASSEMBLY
49. Adjustment of front brake clearance “C”.
 Measure clearance between front brake piston (1) and frontbrake retaining plate (2).
 Select proper thickness of front brake retaining plat so that
clearance is within specifications.
a. Measure dimensions “O” and “P”, and calculate dimension “N”.
i. Measure dimension “O” between the converter housing fitting surface of transmission case and the front brake retaining plate.
CAUTION:
Never change the straight edge installation position before
the completion of “P” measurement.
ii. Measure dimension “P” between the converter housing fitting
surface of transmission case and the oil pump fitting surface of
transmission case.
iii. Measure dimension “O” and “P” in at least three places, and take the average.
iv. Calculate dimension “N”.
JSDIA1704ZZ
1 : Transmission case
2 : Front brake retaining plate
A : Straightedge
“N” : Distance between the oil pump fitting surface of transmission case and the front brake retain-
ing plate.
N = O – P
JSDIA1705ZZ
1 : Transmission case
2 : Front brake retaining plate
A : Straightedge
JSDIA1706ZZ
1 : Transmission case
A : Straightedge
N = O – PJSDIA1707ZZ
Revision: 2010 May2011 QX56

TRANSMISSION ASSEMBLYTM-261
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
b. Measure dimensions “Q1” and “Q2”, and calculate dimension
“Q”.
i. Measure dimension “Q
1” between the transmission case fitting
surface of oil pump and the st raightedge on front brake piston.
CAUTION:
Measure dimension “M
2” in at least three places, and take
the average.
ii. Measure dimension “Q
2” of the straightedge.
iii. Calculate dimension “Q”.
c. Adjust front brake clearance “C”.
 Select proper thickness of retaining plate so that front brakeclearance is within specifications.
1 : Front brake piston
2 : Oil pump assembly
A : Straightedge
“Q” : Distance between the transmission case fit-
ting surface of oil pump and the front brake pis-
ton.
Q = Q
1– Q2JSDIA1708ZZ
1 : Front brake piston
2 : Oil pump assembly
A : Straightedge
JSDIA1709ZZ
1 : Front brake piston
2 : Oil pump assembly
A : Straightedge
Q = Q1– Q2
JSDIA1711ZZ
1 : Front brake piston
2 : Front brake retaining plate
C = N – Q
Front brake clearance “C” : Refer to TM-298, "
Front
Brake Clearance".
Retaining plate : Refer to TM-298, "
Front Brake Clearance".
JSDIA1704ZZ
Revision: 2010 May2011 QX56

TM-268
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
TRANSMISSION ASSEMBLY
Check torque converter one-way clutch using a check tool as shown
at figure.
1. Insert a check tool into the groove of bearing support built into
one-way clutch outer race.
2. When fixing bearing support with a check tool, rotate one-way clutch spline using a screwdriver.
3. Make sure that inner race rotates clockwise only. If not, replace
torque converter assembly.
1st One-way Clutch
Check operation of 1st one-way clutch.
1. Install 1st one-way clutch (1) to front brake hub (with under drivecarrier).
2. Hold 1st one-way clutch.
3. Check front brake hub for correct locking and unlocking direc- tions. If necessary, replace 1st one-way clutch.
Under Drive Sun Gear
Check for deformation, fatigue or damage. If necessary, replace the under drive sun gear.
Mid Carrier Assembly
Check for deformation, fatigue or damage. If necessary, replace the mid carrier assembly.
Rear Carrier Assembly
Check for deformation, fatigue or damage. If necessary, replace the rear carrier assembly.
Reverse Brake Drive Plates
Check facing for burns, cracks or damage. If necessary, replace the plate.
Reverse Brake Retaining Plate, Driven Plates and Dish Plates
Check facing for burns, cracks or damage. If necessary, replace the plate.
Each Snap Ring
Check for deformation, fatigue or damage. If necessary, replace the snap ring.
Parking Actuator Support and Parking Pawl
SCIA3171E
: Unlocked
: Locked
JSDIA1713ZZ
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