2011 INFINITI QX56 transmission

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-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

TM-264
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
TRANSMISSION ASSEMBLY
60. Install converter housing to transmission case, and tighten con-
verter housing bolts ( ) to the specified torque.
61. Connect TCM connector (A).
62. Install joint connector (1) to the control valve & TCM. CAUTION:
Apply ATF to O-ring of joint connector.
63. Install the control valve & TCM (1) to transmission case.
CAUTION:
JPDIA1107ZZ
JSDIA1813ZZ
JSDIA1719ZZ
JSDIA1823ZZ
Revision: 2010 May2011 QX56

TRANSMISSION ASSEMBLYTM-265
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
 Make sure that input speed sen sor securely installs input
speed sensor holes (A).
 Hang down output speed sensor harness toward outside
so as not to disturb installa tion of the control valve &
TCM.
 Adjust A/T assembly harness connector of the control
valve & TCM to terminal ho le of transmission case.
 Assemble it so that manual valve cutout is engaged with manual plate projection.
64. Install bolts and clip (1) to the control valve & TCM. Tighten bolt (E) to the specified torque before tightening the other than bolts.
*: Reamer bolt
65. Connect output speed sensor connector (A).
66. Engage output speed sensor harness with terminal clips ( ).
JPDIA1106ZZ
SCIA5035E
: Front
Bolt symbol Length mm (in) Number of bolts A 43 (1.69) 3
B 40 (1.57) 2
C 54 (2.13) 6
D 50 (1.97) 2
E* 50 (1.97) 1
JPDIA1105ZZ
JPDIA1104ZZ
Revision: 2010 May2011 QX56

TM-266
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
TRANSMISSION ASSEMBLY
67. Pull down joint connector (1).
CAUTION:
Be careful not to damage connector.
68. Install snap ring (1) to joint connector (2).
69. Install magnets (1) in oil pan.
70. Install oil pan gasket to transmission case. CAUTION:
 Never reuse oil pan gasket.
 Install it in the direction to align hole positions.
 Completely remove all moisture, oil and old gasket, etc.from oil pan gasket mounting surface.
71. Install oil pan (2) and clips (1) to transmission case. CAUTION:
 Be careful not to pinch harnesses.
 Completely remove all moisture, oil and old gasket, etc.from oil pan mounting surface.
72. Tighten oil pan mounting bolts to the specified torque in numeri- cal order shown in the figure after temporarily tightening them.
Tighten oil pan mounting bolts to the specified torque.
CAUTION:
Never reuse oil pan mounting bolts.
73. Install drain plug to oil pan. Tighten drain plug to the specified torque.
CAUTION:
Never reuse drain plug gasket.
JSDIA1764ZZ
JSDIA1765ZZ
JPDIA0009ZZ
: Front
: Oil pan mounting bolt
JSDIA1591ZZ
: Front
JSDIA1592GB
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