2001 INFINITI QX4 length

SAT523GA
2. Install accumulator piston.
a. Install O-rings onto accumulator piston.
IApply ATF to O-rings.
Accumulator piston O-rings
Unit: mm (in)
Accumulator A B C D
Small diameter end 29 (1.14) 32 (1.26) 45 (1.77) 29 (1.14)
Large diameter end 45 (1.77) 50 (1.97) 50 (1.97) 45 (1.77)
SAT938A
b. Install return spring for accumulator A onto transmission case.
Free length of return spring:
Refer to SDS, AT-357.
SAT939AA
c. Install accumulator pistons A, B, C and D.
IApply ATF to transmission case.
SAT941A
3. Install band servo piston.
a. Install return springs onto servo piston.
SAT942A
b. Install band servo piston onto transmission case.
IApply ATF to O-ring of band servo piston and transmis-
sion case.
c. Install gasket for band servo onto transmission case.
ASSEMBLY
Assembly (1) (Cont'd)
AT-340

SAT001B
7. Install turbine revolution sensor.
8. Adjust brake band.
a. Tighten anchor end bolt to specified torque.
Anchor end bolt:
:4-6N´m(0.4 - 0.6 kg-m, 35 - 52 in-lb)
b. Back off anchor end bolt two and a half turns.
SAT002B
c. While holding anchor end bolt, tighten lock nut.
Ancher end bolt nut:
: 41 - 50 N´m (4.1 - 5.2 kg-m, 30 - 37 ft-lb)
SAT115B
9. Install terminal cord assembly.
a. Install O-ring on terminal cord assembly.
IApply petroleum jelly to O-ring.
b. Compress terminal cord assembly stopper and install terminal
cord assembly on transmission case.
SAT004BA
10. Install control valve assembly.
a. Install accumulator piston return springs B, C and D.
Free length of return springs:
Refer to SDS, AT-357.
SAT005B
b. Install manual valve on control valve.
IApply ATF to manual valve.
ASSEMBLY
Assembly (2) (Cont'd)
AT-352

Return SpringsNBAT0165Unit: mm (in)
PartsItem
Part No.* Free length Outer diameter
Control valveUpper body1 Torque converter relief valve spring 31742-41X23 38.0 (1.496) 9.0 (0.354)
2 Pressure regulator valve spring 31742-41X24 44.02 (1.7331) 14.0 (0.551)
3 Pressure modifier valve spring 31742-41X19 31.95 (1.2579) 6.8 (0.268)
Ð Accumulator control valve spring Ð Ð Ð
4 Shuttle shift valve D spring 31762-41X01 25.0 (0.984) 7.0 (0.276)
5 4-2 sequence valve spring 31756-41X00 29.1 (1.146) 6.95 (0.2736)
6 Shift valve B spring 31762-41X01 25.0 (0.984) 7.0 (0.276)
7 4-2 relay valve spring 31756-41X00 29.1 (1.146) 6.95 (0.2736)
8 Shift valve A spring 31762-41X01 25.0 (0.984) 7.0 (0.276)
9 Overrun clutch control valve spring 31762-41X03 23.6 (0.929) 7.0 (0.276)
10 Overrun clutch reducing valve spring 31742-41X14 38.9 (1.531) 7.0 (0.276)
11 Shuttle shift valve S spring 31762-41X04 51.0 (2.008) 5.65 (0.2224)
12 Pilot valve spring 31742-41X13 25.7 (1.012) 9.0 (0.354)
13 Torque converter clutch control valve spring 31742-41X22 18.5 (0.728) 13.0 (0.512)
Lower body1 Modifier accumulator piston spring 31742-27X70 31.4 (1.236) 9.8 (0.386)
2 1st reducing valve spring 31756-60X00 20.5 (0.807) 7.0 (0.276)
3 3-2 timing valve spring 31742-41X06 23.0 (0.906) 6.7 (0.264)
4 Servo charger valve spring 31742-41X06 23.0 (0.906) 6.7 (0.264)
Reverse clutch Ð 31505-41X07 Ð Ð
High clutch10 pcs31521-41X03
(Assembly)24.2 (0.9528) 11.6 (0.457)
Forward clutch (Overrun clutch) 20 pcs31521-41X04
(Assembly)35.77 (1.4083) 9.7 (0.382)
Low & reverse brake 18 pcs31655-41X00
(Assembly)22.3 (0.878) 11.2 (0.441)
Band servoSpring A 31605-4AX03 45.6 (1.795) 34.3 (1.350)
Spring B 31605-41X01 29.7 (1.169) 27.6 (1.087)
AccumulatorAccumulator A 31605-41X02 43.0 (1.693) 18.0 (0.709)
Accumulator B 31605-41X14 47.6 (1.874) 26.5 (1.043)
Accumulator C 31605-41X09 45.0 (1.772) 29.3 (1.154)
Accumulator D 31605-41X06 58.4 (2.299) 17.3 (0.681)
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SERVICE DATA AND SPECIFICATIONS (SDS)
Return Springs
AT-357

Joint Assembly (Final drive side)NBAX0019S03IReplace any parts of double offset joint which show signs of
scorching, rust, wear or excessive play.
ICheck serration for deformation. Replace if necessary.
ICheck slide joint housing for any damage. Replace if neces-
sary.
Joint Assembly (Wheel side)NBAX0019S04Replace joint assembly if it is deformed or damaged.
ASSEMBLYNBAX0020IAfter drive shaft has been assembled, ensure that it
moves smoothly over its entire range without binding.
IUse NISSAN GENUINE GREASE or equivalent after every
overhaul.
SFA800
Final Drive Side (TS82F)NBAX0020S011. Install new small boot band, boot and side joint housing to
drive shaft.
Cover drive shaft serration with tape so as not to damage boot
during installation.
SFA397
2. Install spider assembly securely, ensuring marks are properly
aligned.
IPress-fit with spider assembly serration chamfer facing
shaft.
3. Install new snap ring.
SFA460BA
4. Pack with grease.
Specified amount of grease:
95 - 105 g (3.35 - 3.70 oz)
5. Make sure that boot is properly installed on the drive shaft
groove. Set boot so that it does not swell and deform when its
length is ªL
1º.
Length ªL
1º: 95 - 97 mm (3.74 - 3.82 in)
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FRONT AXLE
Drive Shaft (Cont'd)
AX-13

SFA443B
6. Lock new larger boot band securely with a suitable tool, then
lock new smaller boot band.
7. Install new plug seal to slide joint housing by lightly tapping it.
Apply sealant to mating surface of plug seal.
SFA800
Wheel Side (ZF100)NBAX0020S021. Install new small boot band and boot on drive shaft.
Cover drive shaft serration with tape so as not to damage boot
during installation.
SFA884
2. Set joint assembly onto drive shaft by lightly tapping it.
Install joint assembly securely, ensuring marks which were
made during disassembly are properly aligned.
SFA473BA
3. Pack drive shaft with specified amount of grease.
Specified amount of grease:
135 - 145 g (4.76 - 5.11 oz)
4. Make sure that boot is properly installed on the drive shaft
groove. Set boot so that it does not swell and deform when its
length is ªL
2º.
Length ªL
2º: 96 - 98 mm (3.78 - 3.86 in)
5. Lock new larger boot band securely with a suitable tool.
6. Lock new smaller boot band.
SFA887
INSTALLATIONNBAX00211. Apply multi-purpose grease.
FRONT AXLE
Drive Shaft (Cont'd)
AX-14

DRIVE SHAFT=NBAX0033
Drive shaft joint typeFinal drive sideTS82F
Wheel sideZF100
Fixed joint axial end play limit 1 mm (0.04 in)
Diameter Wheel side (D
1)29.0 mm (1.142 in)
GreaseQualityNissan genuine grease or equivalent
Specified amount of greaseFinal drive side 95 - 105 g (3.35 - 3.70 oz)
Wheel side 135 - 145 g (4.76 - 5.11 oz)
Drive shaft axial end play0.45 mm (0.0177 in) or less
Boot lengthFinal drive side (L
1) 95 - 97 mm (3.74 - 3.82 in)
Wheel side (L
2) 96 - 98 mm (3.78 - 3.86 in)
SAX001
Drive Shaft End Snap RingNBAX0033S01
Thickness mm (in) Part No. Thickness mm (in) Part No.
1.1 (0.043)
1.3 (0.051)
1.5 (0.059)
1.7 (0.067)39253-88G10
39253-88G11
39253-88G12
39253-88G131.9 (0.075)
2.1 (0.083)
2.3 (0.091)39253-88G14
39253-88G15
39253-88G16
FRONT AXLE
Service Data and Specifications (SDS) (Cont'd)
AX-16

BRAKE SYSTEM
SECTION
BR
CONTENTS
PRECAUTIONS...............................................................3
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...............3
Precautions for Brake System .....................................3
Wiring Diagrams and Trouble Diagnoses....................4
PREPARATION...............................................................5
Special Service Tools ..................................................5
Commercial Service Tools ...........................................5
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING.....................................................6
NVH Troubleshooting Chart.........................................6
ON-VEHICLE SERVICE..................................................7
Checking Brake Fluid Level.........................................7
Checking Brake Line ...................................................7
Changing Brake Fluid ..................................................7
Bleeding Brake System ...............................................8
BRAKE HYDRAULIC LINE.............................................9
Hydraulic Circuit...........................................................9
Removal .....................................................................10
Inspection...................................................................10
Installation ..................................................................10
PROPORTIONING VALVE (2WD)................................ 11
Inspection................................................................... 11
Removal and Installation (Built-in type)..................... 11
LOAD SENSING VALVE (4WD)...................................12
Inspection...................................................................12
Removal and Installation ...........................................12
BRAKE PEDAL AND BRACKET..................................14
Removal and Installation ...........................................14
Inspection...................................................................14
Adjustment .................................................................14
MASTER CYLINDER.....................................................16
Removal .....................................................................16
Disassembly...............................................................16
Inspection...................................................................17
Assembly ...................................................................17
Installation ..................................................................18
BRAKE BOOSTER........................................................19
On-vehicle Service.....................................................19OPERATING CHECK...............................................19
AIRTIGHT CHECK...................................................19
Removal .....................................................................19
Inspection...................................................................19
OUTPUT ROD LENGTH CHECK..............................19
Installation ..................................................................20
VACUUM PIPING...........................................................21
Vacuum Hose ............................................................21
Removal and Installation ...........................................21
Inspection...................................................................21
HOSES AND CONNECTORS...................................21
CHECK VALVE........................................................21
FRONT DISC BRAKE...................................................22
Components...............................................................22
Pad Replacement ......................................................22
Removal .....................................................................23
Disassembly...............................................................24
Inspection...................................................................24
CALIPER.................................................................24
ROTOR...................................................................24
Assembly ...................................................................25
Installation ..................................................................25
Brake Burnishing Procedure......................................25
REAR DRUM BRAKE...................................................26
Components...............................................................26
Removal .....................................................................26
Inspection...................................................................27
WHEEL CYLINDER..................................................27
Wheel Cylinder Overhaul...........................................28
Inspection...................................................................28
DRUM.....................................................................28
LINING....................................................................28
Installation ..................................................................28
PARKING BRAKE CONTROL......................................30
Components...............................................................30
Removal and Installation ...........................................30
Inspection...................................................................30
Adjustment .................................................................31
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InspectionNBBR0014CAUTION:
ICarefully monitor brake fluid level at master cylinder.
IUse new brake fluid ªDOT 3º.
IBe careful not to splash brake fluid on painted areas; it
may cause paint damage. If brake fluid is splashed on
paint areas, wash it away with water immediately.
IDepress pedal slowly when raising front brake pressure.
ICheck rear brake pressure 2 seconds after front brake
pressure reaches specified value.
IDisconnect harness connectors from ABS actuator and
electric unit before checking.
SBR212E
1. Park vehicle on a level surface with vehicle unloaded*.
* Fuel, radiator coolant and engine oil full. Spare tire, jack,
hand tools and mats in designated positions.
2. Press a lever to the stopper bolt, then check length ªBº as fol-
lows:
Length ªBº Reference (Length ªLº)
207.7 mm (8.18 in) 217.3 mm (8.56 in)
3. If length ªBº is not within specification, adjust sensor spring
length.
Removal and InstallationNBBR0015CAUTION:
IRefill with new brake fluid ªDOT 3º.
IBe careful not to splash brake fluid on painted areas; it
may cause paint damage. If brake fluid is splashed on
painted areas, wash it away with water immediately.
IDo not reuse Load Sensing Valve once it is disassembled.
IReplace damaged Load Sensing Valve as an assembly.
IWhen disassembling, apply multi-purpose grease to all
rubbing areas.
LOAD SENSING VALVE (4WD)
Inspection
BR-12