oil NISSAN NAVARA 2005 Repair Workshop Manual

AT-4
Sensor 2 ...............................................................218
Parking Components (2WD Models Only) ............230
Rear Oil Seal ........................................................237
Revolution Sensor Components (2WD Models
Only) .....................................................................238
AIR BREATHER HOSE ...........................................243
Removal and Installation ......................................243
A/T FLUID COOLER ...............................................244
Removal and Installation ......................................244
TRANSMISSION ASSEMBLY ................................247
Removal and Installation ......................................247
OVERHAUL .............................................................251
Components .........................................................251
Oil Channel ...........................................................259
Locations of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings ..........................261
DISASSEMBLY .......................................................263
Disassembly .........................................................263
REPAIR FOR COMPONENT PARTS ......................281
Oil Pump ...............................................................281
Front Sun Gear, 3rd One-way Clutch ...................284Front Carrier, Input Clutch, Rear Internal Gear .....286
Mid Sun Gear, Rear Sun Gear, High and Low
Reverse Clutch Hub ..............................................291
High and Low Reverse Clutch ..............................296
Direct Clutch .........................................................298
ASSEMBLY .............................................................300
Assembly (1) .........................................................300
Adjustment ............................................................313
Assembly (2) .........................................................316
SERVICE DATA AND SPECIFICATIONS (SDS) ....323
General Specifications ..........................................323
Stall Speed ............................................................323
Line Pressure ........................................................323
Vehicle Speed at Which Gear Shifting Occurs ......324
Vehicle Speed at Which Lock-Up Occurs/Releases.324
A/T Fluid Temperature Sensor ..............................324
Vehicle Speed Sensor A/T (Revolution Sensor) ...325
Turbine Revolution Sensor ....................................325
Reverse Brake ......................................................325
Total End Play .......................................................325

PRECAUTIONS
AT-7
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
ECS00IPT
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
lTo avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
lImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
lDo not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
PrecautionsECS00IPR
lBefore connecting or disconnecting the A/T assembly har-
ness connector, turn ignition switch OFF and disconnect
the battery cable from the negative terminal. Because bat-
tery voltage is applied to TCM even if ignition switch is
turned OFF.
lAfter performing each TROUBLE DIAGNOSIS, perform
“DTC Confirmation Procedure”.
If the repair is completed the DTC should not be displayed
in the “DTC Confirmation Procedure”.
lAlways use the specified brand of ATF. Refer toMA-14, "REC-
OMMENDED FLUIDS AND LUBRICANTS".
lUse lint-free paper not cloth rags during work.
lAfter replacing ATF, dispose of the waste oil using the methods prescribed by law, ordinance, etc.
lBefore proceeding with disassembly, thoroughly clean the outside of the transmission. It is important to
prevent the internal parts from becoming contaminated by dirt or other foreign matter.
lDisassembly should be done in a clean work area.
lUse lint-free paper or towels for wiping parts clean. Common shop rags can leave fibers that could inter-
fere with the operation of the transmission.
lPlace disassembled parts in order for easier and proper assembly.
lAll parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or
reassembly.
lGaskets, seals and O-rings should be replaced any time the transmission is disassembled.
lIt is very important to perform functional tests whenever they are indicated.
lThe valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent
springs and small parts from becoming scattered or lost.
lProperly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight.
lBefore assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings
and seals, or hold bearings and washers in place during assembly. Do not use grease.
lExtreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.
lAfter overhaul, refill the transmission with new ATF.
lWhen the drain plug is removed, only some of the ATF is drained. Old ATF will remain in torque converter
and A/T fluid cooling system.
Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer
toAT-11, "
Changing A/T Fluid",AT-12, "Checking A/T Fluid".
SEF289H

PREPARATION
AT-9
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PREPARATIONPFP:00002
Special Service ToolsECS00FWB
Tool number
Tool nameDescription
ST2505S001
Oil pressure gauge set
1 ST25051001
Oil pressure gauge
2 ST25052000
Hose
3 ST25053000
Joint pipe
4 ST25054000
Adapter
5 ST25055000
AdapterMeasuring line pressure
KV31103600
Joint pipe adapter
(With ST25054000)Measuring line pressure
ST33400001
Drift
a: 60 mm (2.36 in) dia.
b: 47 mm (1.85 in) dia.
lInstalling rear oil seal (2WD models)
lInstalling oil pump housing oil seal
KV31102400
Clutch spring compressor
a: 320 mm (12.60 in)
b: 174 mm (6.85 in)Installing reverse brake return spring retainer
ST25850000
Sliding hammer
a: 179 mm (7.05 in)
b: 70 mm (2.76 in)
c: 40 mm (1.57 in)
d: M12X1.75PRemove oil pump assembly
SCIA3695J
ZZA1227D
NT086
NT423
NT422

AT-10
PREPARATION
Commercial Service Tools
ECS00FWC
Tool nameDescription
Drift
a: 22 mm (0.87 in) dia.Installing manual shaft oil seals
Drift
a: 64 mm (2.52 in) dia.Installing rear oil seal (4WD models)
NT083
SCIA5338E

A/T FLUID
AT-11
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A/T FLUIDPFP:KLE40
Changing A/T FluidECS00FWD
1. Warm up ATF.
2. Stop engine.
3. Loosen level gauge bolt.
4. Remove A/T fluid level gauge.
5. Remove drain plug and drain ATF from drain hole.
6. Install drain plug gasket and drain plug to oil pan.
CAUTION:
Do not reuse drain plug gasket.
7. Tighten drain plug to the specified torque. Refer toAT-218,
"COMPONENTS".
8. Refill with new ATF. Always refill same volume with drained ATF.
lTo replace the ATF, pour in new ATF at A/T fluid charging pipe
with the engine idling and at the same time drain the old ATF
from A/T fluid cooler hose return side.
lWhen the color of the ATF coming out is about the same as the color of the new ATF, the replacement
is complete. The amount of new ATF to use should be 30 to 50% increase of the specified amount.
CAUTION:
lUse only Genuine NISSAN ATF Matic Fluid J. Do not mix with other ATF.
lUsing ATF other than Genuine NISSAN ATF Matic Fluid J will cause deterioration in driveability
and A/T durability, and may damage the A/T, which is not covered by the NISSAN new vehicle
warranty.
lWhen filling ATF, take care not to spillover heat generating parts such as exhaust.
9. Run engine at idle speed for 5 minutes.
10. Check A/T fluid level and condition. Refer toAT-12, "
Checking A/T Fluid". If ATF is still dirty, repeat step 2
through 9.
11. Install the removed A/T fluid level gauge into A/T fluid charging pipe.
12. Tighten level gauge bolt to the specified torque. Refer toAT- 2 4 7 , "
COMPONENTS". ATF: Genuine NISSAN ATF Matic Fluid J
Fluid capacity:
10.3 (9-1/8 lmp qt)
SCIA4896E

AT-14
A/T CONTROL SYSTEM
A/T CONTROL SYSTEM
PFP:31036
Cross-Sectional View (2WD Models)ECS00GVH
1. Front planetary gear 2. Mid planetary gear 3. Rear planetary gear
4. Direct clutch 5. High and low reverse clutch 6. Reverse brake
7. Drum support 8. Forward brake 9. Low coast brake
10. Input shaft 11. Torque converter 12. Oil pump
13. 3rd one-way clutch 14. Front brake 15. Input clutch
16. 1st one-way clutch 17. Control valve with TCM 18. Forward one-way clutch
19. Rear extension 20. Output shaft
SCIA7318E

A/T CONTROL SYSTEM
AT-15
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Cross-Sectional View (4WD Models)ECS00GVI
1. Front planetary gear 2. Mid planetary gear 3. Rear planetary gear
4. Direct clutch 5. High and low reverse clutch 6. Reverse brake
7. Drum support 8. Forward brake 9. Low coast brake
10. Input shaft 11. Torque converter 12. Oil pump
13. Front brake 14. 3rd one-way clutch 15. Input clutch
16. 1st one-way clutch 17. Control valve with TCM 18. Forward one-way clutch
19. Adapter case 20. Output shaft
SCIA5268E

A/T CONTROL SYSTEM
AT-29
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Line Pressure ControlECS00FWL
lWhen an input torque signal equivalent to the engine drive force is sent from the ECM to the TCM, the
TCM controls the line pressure solenoid.
lThis line pressure solenoid controls the pressure regulator valve as the signal pressure and adjusts the
pressure of the operating oil discharged from the oil pump to the line pressure most appropriate to the
driving state.
LINE PRESSURE CONTROL IS BASED ON THE TCM LINE PRESSURE CHARACTERISTIC
PAT T E R N
lThe TCM has stored in memory a number of patterns for the optimum line pressure characteristic for the
driving state.
lIn order to obtain the most appropriate line pressure characteristic to meet the current driving state, the
TCM controls the line pressure solenoid current value and thus controls the line pressure.
Normal Control
Each clutch is adjusted to the necessary pressure to match the
engine drive force.
Back-up Control (Engine Brake)
When the select operation is performed during driving and the A/T is
shifted down, the line pressure is set according to the vehicle speed.
PCIA0007E
PCIA0008E
PCIA0009E

A/T CONTROL SYSTEM
AT-31
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SHIFT CHANGE
The clutch is controlled with the optimum timing and oil pressure by the engine speed, engine torque informa-
tion, etc.
Shift Change System Diagram
*1: Full phase real-time feedback control monitors movement of gear ratio at gear change, and controls oil
pressure at real-time to achieve the best gear ratio.
Lock-up ControlECS00FWN
The torque converter clutch piston in the torque converter is engaged to eliminate torque converter slip to
increase power transmission efficiency.
The torque converter clutch control valve operation is controlled by the torque converter clutch solenoid valve,
which is controlled by a signal from TCM, and the torque converter clutch control valve engages or releases
the torque converter clutch piston.
Lock-up Operation Condition Table
TORQUE CONVERTER CLUTCH CONTROL VALVE CONTROL
Lock-up Control System Diagram
Lock-up Released
In the lock-up released state, the torque converter clutch control valve is set into the unlocked state by the
torque converter clutch solenoid and the lock-up apply pressure is drained.
In this way, the torque converter clutch piston is not coupled.
PCIA0013E
selector lever “D” position “3” position “2” position
Gear position 5 4 3 2
Lock-up´–´´
PCIA0014E

A/T CONTROL SYSTEM
AT-33
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Control ValveECS00FWP
FUNCTION OF CONTROL VALVE
FUNCTION OF PRESSURE SWITCH
Name Function
Torque converter regulator valveIn order to prevent the pressure supplied to the torque converter from being excessive, the
line pressure is adjusted to the optimum pressure (torque converter operating pressure).
Pressure regulator valve
Pressure regulator plug
Pressure regulator sleeveAdjusts the oil discharged from the oil pump to the optimum pressure (line pressure) for
the driving state.
Front brake control valveWhen the front brake is coupled, adjusts the line pressure to the optimum pressure (front
brake pressure) and supplies it to the front brake. (In 1st, 2nd, 3rd, and 5th gears, adjusts
theclutchpressure.)
Accumulator control valveAdjusts the pressure (accumulator control pressure) acting on the accumulator piston and
low coast reducing valve to the pressure appropriate to the driving state.
Pilot valve AAdjusts the line pressure and produces the constant pressure (pilot pressure) required for
line pressure control, shift change control, and lock-up control.
Pilot valve BAdjusts the line pressure and produces the constant pressure (pilot pressure) required for
shift change control.
Low coast brake switching valve During engine braking, supplies the line pressure to the low coast brake reducing valve.
Low coast brake reducing valveWhen the low coast brake is coupled, adjusts the line pressure to the optimum pressure
(low coast brake pressure) and supplies it to the low coast brake.
N-R accumulator Produces the stabilizing pressure for when N-R is selected.
Direct clutch piston switching valve Operates in 4th gear and switches the direct clutch coupling capacity.
High and low reverse clutch control valveWhen the high and low reverse clutch is coupled, adjusts the line pressure to the optimum
pressure (high and low reverse clutch pressure) and supplies it to the high and low reverse
clutch. (In 1st, 3rd, 4th and 5th gears, adjusts the clutch pressure.)
Input clutch control valveWhen the input clutch is coupled, adjusts the line pressure to the optimum pressure (input
clutch pressure) and supplies it to the input clutch. (In 4th and 5th gears, adjusts the clutch
pressure.)
Direct clutch control valveWhen the direct clutch is coupled, adjusts the line pressure to the optimum pressure
(direct clutch pressure) and supplies it to the direct clutch. (In 2nd, 3rd, and 4th gears,
adjusts the clutch pressure.)
TCC control valve
TCC control plug
TCC control sleeveSwitches the lock-up to operating or released. Also, by performing the lock-up operation
transiently, lock-up smoothly.
Torque converter lubrication valveOperates during lock-up to switch the torque converter, cooling, and lubrication system oil
path.
Cool bypass valve Allows excess oil to bypass cooler circuit without being fed into it.
Line pressure relief valve Discharges excess oil from line pressure circuit.
N-D accumulator Produces the stabilizing pressure for when N-D is selected.
Manual valveSends line pressure to each circuit according to the select position. The circuits to which
the line pressure is not sent drain.
Name Function
ATFpressureswitch1(FR/B)Detects any malfunction in the front brake hydraulic pressure. When it detects any malfunction,
it puts the system into fail-safe mode.
ATFpressureswitch2(LC/B)Detects any malfunction in the low coast brake hydraulic pressure. When it detects any mal-
function, it puts the system into fail-safe mode.
ATFpressureswitch3(I/C)Detects any malfunction in the input clutch hydraulic pressure. When it detects any malfunction,
it puts the system into fail-safe mode.
ATF pressure switch 5 (D/C)Detects any malfunction in the direct clutch hydraulic pressure. When it detects any malfunc-
tion, it puts the system into fail-safe mode.
ATF pressure switch 6 (HLR/C)Detects any malfunction in the high and low reverse clutch hydraulic pressure. When it detects
any malfunction, it puts the system into fail-safe mode.