INFINITI QX4 2001 Factory Service Manual

SAT935A
c. While pushing detent spring down, remove manual plate and
parking rod from transmission case.
SAT043B
d. Remove manual shaft from transmission case.
SAT934A
e. Remove spacer and detent spring from transmission case.
SAT044B
f. Remove oil seal from transmission case.
DISASSEMBLY
AT-296

Oil Pump
COMPONENTSNBAT0112
SAT648AB
SAT649A
DISASSEMBLYNBAT01131. Loosen bolts in numerical order and remove oil pump cover.
SAT650A
2. Remove rotor, vane rings and vanes.
IInscribe a mark on back of rotor for identification of fore-
aft direction when reassembling rotor. Then remove rotor.
SAT651A
3. While pushing on cam ring remove pivot pin.
IBe careful not to scratch oil pump housing.
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REPAIR FOR COMPONENT PARTS
Oil Pump
AT-297

SAT652A
4. While holding cam ring and spring lift out cam ring spring.
IBe careful not to damage oil pump housing.
IHold cam ring spring to prevent it from jumping.
SAT653A
5. Remove cam ring and cam ring spring from oil pump housing.
SAT654A
6. Remove pivot pin from control piston and remove control pis-
ton assembly.
SAT655A
7. Remove oil seal from oil pump housing.
IBe careful not to scratch oil pump housing.
SAT656A
INSPECTIONNBAT0114Oil Pump Cover, Rotor, Vanes, Control Piston, Side
Seals, Cam Ring and Friction Ring
NBAT0114S01ICheck for wear or damage.
REPAIR FOR COMPONENT PARTS
Oil Pump (Cont'd)
AT-298

SAT657A
SAT658A
Side ClearancesNBAT0114S02IMeasure side clearances between end of oil pump housing
and cam ring, rotor, vanes and control piston. Measure in at
least four places along their circumferences. Maximum mea-
sured values should be within specified positions.
IBefore measurement, check that friction rings, O-ring,
control piston side seals and cam ring spring are
removed.
Standard clearance (Cam ring, rotor, vanes and control
piston):
Refer to SDS, AT-360.
IIf not within standard clearance, replace oil pump assembly
except oil pump cover assembly.
Seal Ring ClearanceNBAT0114S03IMeasure clearance between seal ring and ring groove.
Standard clearance:
0.10 - 0.25 mm (0.0039 - 0.0098 in)
Wear limit:
0.25 mm (0.0098 in)
IIf not within wear limit, replace oil pump cover assembly.
SAT081E
ASSEMBLYNBAT01151. Drive oil seal into oil pump housing.
IApply ATF to outer periphery and lip surface.
SAT654A
2. Install cam ring in oil pump housing by the following
a. Install side seal on control piston.
IPay attention to its direction Ð Black surface goes toward
control piston.
IApply petroleum jelly to side seal.
b. Install control piston on oil pump.
SAT660A
c. Install O-ring and friction ring on cam ring.
IApply petroleum jelly to O-ring.
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REPAIR FOR COMPONENT PARTS
Oil Pump (Cont'd)
AT-299

SAT661A
d. Assemble cam ring, cam ring spring and spring seat. Install
spring by pushing it against pump housing.
SAT651A
e. While pushing on cam ring install pivot pin.
SAT662A
3. Install rotor, vanes and vane rings.
IPay attention to direction of rotor.
SAT649A
4. Install oil pump housing and oil pump cover.
a. Wrap masking tape around splines of oil pump cover assem-
bly to protect seal. Position oil pump cover assembly in oil
pump housing assembly, then remove masking tape.
b. Tighten bolts in a criss-cross pattern.
SAT663A
5. Install new seal rings carefully after packing ring grooves with
petroleum jelly. Press rings down into jelly to a close fit.
ISeal rings come in two different diameters. Check fit care-
fully in each groove.
Small dia. seal ring:
No mark
Large dia. seal ring:
Yellow mark in area shown by arrow
IDo not spread gap of seal ring excessively while install-
ing. It may deform ring.
REPAIR FOR COMPONENT PARTS
Oil Pump (Cont'd)
AT-300

Control Valve Assembly
COMPONENTSNBAT0116
SAT156K
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REPAIR FOR COMPONENT PARTS
Control Valve Assembly
AT-301

SAT194B
DISASSEMBLYNBAT01171. Remove solenoids.
a. Remove torque converter clutch solenoid valve and side plate
from lower body.
b. Remove O-ring from solenoid.
SAT667A
c. Remove line pressure solenoid valve from upper body.
d. Remove O-ring from solenoid.
SAT043G
e. Remove 3-unit solenoid assembly from upper body.
f. Remove O-rings from solenoids.
SAT195B
2. Disassemble upper and lower bodies.
a. Place upper body facedown, and remove bolts, reamer bolts
and support plates.
b. Remove lower body, separator plate as a unit from upper body.
IBe careful not to drop pilot filter, orifice check valve,
spring and steel balls.
SAT670A
c. Place lower body facedown, and remove separator plate.
d. Remove pilot filter, orifice check valve and orifice check spring.
REPAIR FOR COMPONENT PARTS
Control Valve Assembly (Cont'd)
AT-302

SAT671A
e. Check to see that steel balls are properly positioned in upper
body. Then remove them from upper body.
SAT672A
INSPECTIONNBAT0118Lower and Upper BodiesNBAT0118S01ICheck to see that there are pins and retainer plates in lower
body.
SAT673A
ICheck to see that there are pins and retainer plates in upper
body.
IBe careful not to lose these parts.
SAT674A
ICheck to make sure that oil circuits are clean and free from
damage.
ICheck tube brackets and tube connectors for damage.
SAT675A
Separator PlateNBAT0118S02IMake sure that separator plate is free of damage and not
deformed and oil holes are clean.
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REPAIR FOR COMPONENT PARTS
Control Valve Assembly (Cont'd)
AT-303

SAT676A
Pilot FilterNBAT0118S03ICheck to make sure that filter is not clogged or damaged.
SAT149G
Torque Converter Clutch Solenoid ValveNBAT0118S04ICheck that filter is not clogged or damaged.
IMeasure resistance. Refer to ªComponent Inspectionº, AT-152.
Line Pressure Solenoid ValveNBAT0118S05ICheck that filter is not clogged or damaged.
IMeasure resistance. Refer to ªComponent Inspectionº, AT-167.
SAT095B
3-Unit Solenoid Assembly (Overrun Clutch Solenoid
Valve and Shift Solenoid Valves A and B)
NBAT0118S06IMeasure resistance of each solenoid. Refer to ªComponent
Inspectionº, AT-171, AT-175 and AT-189.
SAT096BA
A/T Fluid Temperature Sensor and SwitchNBAT0118S07IMeasure resistance. Refer to ªComponent Inspectionº, AT-110
and AT-264.
SAT671A
ASSEMBLYNBAT01191. Install upper and lower bodies.
a. Place oil circuit of upper body face up. Install steel balls in their
proper positions.
REPAIR FOR COMPONENT PARTS
Control Valve Assembly (Cont'd)
AT-304

SAT681A
b. Install reamer bolts from bottom of upper body.
SAT682A
c. Place oil circuit of lower body face up. Install orifice check
spring, orifice check valve and pilot filter.
SAT197B
d. Install lower separator plate on lower body.
e. Install and temporarily tighten support plates, A/T fluid tem-
perature sensor and tube brackets.
SAT198B
f. Temporarily assemble lower and upper bodies, using reamer
bolt as a guide.
IBe careful not to dislocate or drop steel balls, orifice
check spring, orifice check valve and pilot filter.
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REPAIR FOR COMPONENT PARTS
Control Valve Assembly (Cont'd)
AT-305