Nissan Pathfinder (2005 year). Instruction — part 5
PREPARATION
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2005 Pathfinder
ST25850000
(J-25721-A)
Sliding hammer
Remove oil pump assembly
a: 179 mm (7.05 in)
b: 70 mm (2.76 in)
c: 40 mm (1.57 in)
d: M12X1.75P
—
(J-47002)
Transmission jack adapter kit
1.
—
(J-47002-1)
Center bracket
2.
—
(J-47002-3)
Adapter plate
3.
—
(J-47002-4)
Adapter block
Assist in removal of transmission and transfer
case as one assembly using only one trans-
mission jack.
Tool number
(Kent-Moore No.)
Tool name
Description
NT422
WCIA0499E
AT-12
PREPARATION
2005 Pathfinder
Commercial Service Tools
UCS00317
Tool name
Description
Power tool
Loosening bolts and nuts
Drift
Installing instruction shaft seals
a: 22 mm (0.87 in) dia.
Drift
Installing rear oil seal (4WD models)
a: 64 mm (2.52 in) dia.
PBIC0190E
NT083
SCIA5338E
A/T FLUID
AT-13
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2005 Pathfinder
A/T FLUID
PFP:KLE40
Changing A/T Fluid
UCS00318
Refer to
MA-24, "Changing the Automatic Transmission Fluid (ATF)"
.
Checking A/T Fluid
UCS00319
Refer to
MA-22, "Checking the Automatic Transmission Fluid (ATF)"
.
A/T Fluid Cooler Cleaning
UCS0031A
Whenever an A/T is repaired, overhauled, or replaced, the A/T fluid cooler mounted in the radiator must be
inspected and cleaned.
Metal debris and friction material, if present, can become trapped in the A/T fluid cooler. This debris can con-
taminate the newly serviced A/T or, in severe cases, can block or restrict the flow of A/T fluid. In either case,
malfunction of the newly serviced A/T may result.
Debris, if present, may build up as A/T fluid enters the cooler inlet. It will be necessary to back flush the cooler
through the cooler outlet in order to flush out any built up debris.
A/T FLUID COOLER CLEANING PROCEDURE
1.
Position a drain pan under the A/T inlet and outlet fluid cooler tube to cooler hose connection.
2.
Put a different color matching mark on each cooler tube to cooler hose connection to aid in assembly.
CAUTION:
Use paint to make the matching mark. Do not damage the tubes or hose.
3.
Disconnect the fluid cooler inlet and outlet rubber hoses from the
steel cooler tubes.
NOTE:
Replace the cooler hoses if rubber material from the hose
remains on the tube fitting.
4.
Drain any A/T fluid from the cooler hose.
5.
Insert the extension adapter hose of a can of Transmission
Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler out-
let hose.
CAUTION:
●
Wear safety glasses and rubber gloves when spraying
the Transmission Cooler Cleaner.
●
Spray cooler cleaner only with adequate ventilation.
●
Avoid contact with eyes and skin.
●
Do not breath vapors or spray mist.
6.
Hold the hose and can as high as possible and spray Transmis-
sion Cooler Cleaner in a continuous stream into the cooler outlet
hose until fluid flows out of the cooler inlet hose for 5 seconds.
7.
Insert the tip of an air gun into the end of the cooler outlet hose.
8.
Wrap a shop rag around the tip of the air gun and the cooler out-
let hose.
SCIA3830E
SCIA3831E
SCIA3832E
AT-14
A/T FLUID
2005 Pathfinder
9.
Blow compressed air regulated to 5 - 9 kg/cm
2
(70 - 130 psi) through the cooler outlet hose for 10 sec-
onds to force out any remaining fluid.
10. Repeat steps 5 through 9 three additional times.
11. Position an oil pan under the banjo bolts that connect the fluid cooler tubes to the A/T.
12. Remove the banjo bolts.
13. Flush each steel line from the cooler side back toward the A/T by spraying Transmission Cooler Cleaner
in a continuous stream for 5 seconds.
14. Blow compressed air regulated to 5 - 9 kg/cm
2
(70 - 130 psi) through each steel line from the cooler side
back toward the A/T for 10 seconds to force out any remaining fluid.
15. Ensure all debris is removed from the steel cooler lines.
16. Ensure all debris is removed from the banjo bolts and fittings.
17. Perform
AT-14, "A/T FLUID COOLER DIAGNOSIS PROCEDURE"
.
A/T FLUID COOLER DIAGNOSIS PROCEDURE
NOTE:
Insufficient cleaning of the cooler inlet hose exterior may lead to inaccurate debris identification.
1.
Position a drain pan under the A/T inlet and outlet fluid cooler tube to cooler hose connection.
2.
Clean the exterior and tip of the cooler inlet hose.
3.
Put a different color matching mark on each cooler tube to cooler hose connection to aid in assembly.
CAUTION:
Use paint to make the matching mark. Do not damage the tubes or hose.
4.
Disconnect the fluid cooler inlet and outlet rubber hoses from the
steel cooler tubes.
NOTE:
Replace the cooler hoses if rubber material from the hose
remains on the tube fitting.
5.
Insert the extension adapter hose of a can of Transmission
Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler out-
let hose.
CAUTION:
●
Wear safety glasses and rubber gloves when spraying
the Transmission Cooler Cleaner.
●
Spray cooler cleaner only with adequate ventilation.
●
Avoid contact with eyes and skin.
●
Do not breath vapors or spray mist.
6.
Hold the hose and can as high as possible and spray Transmis-
sion Cooler Cleaner in a continuous stream into the cooler outlet
hose until fluid flows out of the cooler inlet hose for 5 seconds.
SCIA3830E
SCIA3831E
A/T FLUID
AT-15
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2005 Pathfinder
7.
Tie a common white, basket-type coffee filter to the end of the
cooler inlet hose.
8.
Insert the tip of an air gun into the end of the cooler outlet hose.
9.
Wrap a shop rag around the air gun tip and end of cooler outlet
hose.
10. Blow compressed air regulated to 5 - 9 kg/cm
2
(70 - 130 psi)
through the cooler outlet hose to force any remaining A/T fluid
into the coffee filter.
11. Remove the coffee filter from the end of the cooler inlet hose.
12. Perform A/T fluid cooler inspection. Refer to
.
A/T FLUID COOLER INSPECTION PROCEDURE
1.
Inspect the coffee filter for debris.
a.
If small metal debris less than 1mm (0.040 in) in size or metal
powder is found in the coffee filter, this is normal. If normal
debris is found, the A/T fluid cooler/radiator can be re-used and
the procedure is ended.
b.
If one or more pieces of debris are found that are over 1mm
(0.040 in) in size and/or peeled clutch facing material is found in
the coffee filter, the fluid cooler is not serviceable. The A/T fluid
cooler/radiator must be replaced and the inspection procedure is
ended. Refer to
.
A/T FLUID COOLER FINAL INSPECTION
After performing all procedures, ensure that all remaining oil is cleaned from all components.
SCIA3833E
SCIA3834E
SCIA2967E
SCIA5659E
AT-16
A/T CONTROL SYSTEM
2005 Pathfinder
A/T CONTROL SYSTEM
PFP:31036
Cross-Sectional View
UCS0031B
2WD models
SCIA5267E
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. Rear extension
20.
Output shaft
A/T CONTROL SYSTEM
AT-17
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2005 Pathfinder
4WD models
SCIA5268E
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
AT-18
A/T CONTROL SYSTEM
2005 Pathfinder
Shift Mechanism
UCS0031D
The automatic transmission uses compact triple planetary gear systems to improve power-transmission effi-
ciency, simplify construction and reduce weight.
It also employs an optimum shift control and super wide gear ratios. They improve starting performance and
acceleration during medium and high-speed operation.
CONSTRUCTION
FUNCTION OF CLUTCH AND BRAKE
1.
Front brake
2.
Input clutch
3.
Direct clutch
4.
High and low reverse clutch
5.
Reverse brake
6.
Forward brake
7.
Low coast brake
8.
1st one-way clutch
9.
Forward one-way clutch
10. 3rd one-way clutch
11.
Front sun gear
12. Input shaft
13. Mid internal gear
14.
Front internal gear
15. Rear carrier
16. Rear sun gear
17.
Mid sun gear
18. Front carrier
19. Mid carrier
20.
Rear internal gear
21. Output shaft
22. Parking gear
23.
Parking pawl
PCIA0002J
Name of the Part
Abbreviation
Function
Front brake (1)
FR/B
Fastens the front sun gear (11).
Input clutch (2)
I/C
Connects the input shaft (12), the front internal gear (14) and the mid internal
gear (13).
Direct clutch (3)
D/C
Connects the rear carrier (15) and the rear sun gear (16).
High and low reverse clutch (4)
HLR/C
Connects the mid sun gear (17) and the rear sun gear (16).
Reverse brake (5)
R/B
Fastens the rear carrier (15).
Forward brake (6)
Fwd/B
Fastens the mid sun gear (17).
Low coast brake (7)
LC/B
Fastens the mid sun gear (17).
1st one-way clutch (8)
1st WOC
Allows the rear sun gear (16) to turn freely forward relative to the mid sun gear
(17) but fastens it for reverse rotation.
Forward one-way clutch (9)
Fwd OWC
Allows the mid sun gear (17) to turn freely in the forward direction but fastens it
for reverse rotation.
3rd one-way clutch (10)
3rd OWC
Allows the front sun gear (11) to turn freely in the forward direction but fastens
it for reverse rotation.
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