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Nissan Pathfinder (2007 year). Manual - part 5

PREPARATION

AT-11

2007 Pathfinder

Commercial Service Tools

ECS00EEI

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

Tool name

Description

Power tool

Loosening bolts and nuts

Drift

Installing manual shaft seals
a: 22 mm (0.87 in) dia.

Drift

Installing rear oil seal (4WD models)
a: 64 mm (2.52 in) dia.

Pin punch

●

Removing retaining pin

●

Installing retaining pin

a: 4 mm (0.16 in) dia.

PBIC0190E

NT083

SCIA5338E

NT410

AT-12

A/T FLUID

2007 Pathfinder

A/T FLUID

PFP:KLE40

Checking the A/T Fluid (ATF)

ECS00FSK

CAUTION:

If using the vehicle for towing, the A/T fluid must be replaced as specified. Refer to

MA-7, "PERIODIC

MAINTENANCE"

Before driving, the A/T fluid level can be checked at A/T fluid
temperatures of 30

to 50

C (86

to 122

F) using the “COLD”

range on the A/T fluid level gauge as follows:

Park the vehicle on a level surface and set the parking brake.

Start the engine and move the selector lever through each gear
position. Shift the selector lever into the “P” position.

Check the A/T fluid level with the engine idling.

Remove the A/T fluid level gauge and wipe it clean with a lint-
free paper.

CAUTION:

When wiping the A/T fluid from the A/T fluid level gauge,
always use a lint-free paper, not a cloth.

Re-insert the A/T fluid level gauge into the A/T fluid charging
pipe until the cap contacts the top of the A/T fluid charging pipe
as shown.

CAUTION:

To check A/T fluid level, insert the A/T fluid level gauge until
the cap contacts the top of the A/T fluid charging pipe, with
the gauge reversed from the normal inserted position.

Remove the A/T fluid level gauge and note the A/T fluid level. If
the A/T fluid level is at low side of range, add A/T fluid to the
transmission through the A/T fluid charging pipe.

CAUTION:

Do not overfill the transmission with A/T fluid.

Install the A/T fluid level gauge and the A/T fluid level gauge bolt.

Warm up the engine and transmission.

Check for any A/T fluid leaks.

Drive the vehicle to increase the A/T fluid temperature to 80

C (176

F).

LLIA0071E

A/T fluid level gauge bolt

: Refer to

AT-240, "COMPONENTS"

for (2WD)

AT-243, "COMPONENTS"

for (4WD).

SCIA2899E

A/T FLUID

AT-13

2007 Pathfinder

Allow the A/T fluid temperature to fall to approximately 65

C (149

F). Use the CONSULT-II to monitor the

A/T fluid temperature as follows:

NOTE:
The A/T fluid level will be significantly affected by the A/T fluid temperature as shown. Therefore monitor
the A/T fluid temperature data using the CONSULT-II.

Connect CONSULT-II to data link connector.

Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.

Read out the value of “ATF TEMP 1”.

Re-check the A/T fluid level at A/T fluid temperatures of approxi-
mately 65

C (149

F) using the “HOT” range on the A/T fluid

level gauge as shown. The HOT range is between 50

- 80

(122

- 176

F).

CAUTION:

●

When wiping the A/T fluid from the A/T fluid level gauge,
always use lint-free paper, not a cloth.

●

To check the A/T fluid level, insert the A/T fluid level
gauge until the cap contacts the top of the A/T fluid
charging pipe, with the gauge reversed from the normal
inserted position as shown.

Check the A/T fluid condition.

●

If the A/T fluid is very dark or has some burned smell, there
may be an internal problem with the transmission. Refer to

AT-175, "TROUBLE DIAGNOSIS FOR SYMPTOMS"

. Flush

the transmission cooling system after repairing the transmis-
sion.

●

If the A/T fluid contains frictional material (clutches, bands,
etc.), replace the radiator and flush the transmission cooler
lines using cleaning solvent and compressed air after repairing the transmission.

Install the A/T fluid level gauge in the A/T fluid charging pipe.

Tighten the A/T fluid level gauge bolt to specification.

SLIA0016E

LLIA0071E

SCIA2899E

AT-14

A/T FLUID

2007 Pathfinder

Changing the A/T Fluid (ATF)

ECS00FSL

CAUTION:

If using the vehicle for towing, the A/T fluid must be replaced as specified. Refer to

MA-7, "PERIODIC

MAINTENANCE"

Drive the vehicle to warm up the A/T fluid to approximately 80

C (176

F).

Stop the engine.

Remove the A/T fluid level gauge.

Drain the A/T fluid from the drain plug hole, then install the drain
plug with a new gasket. Refill the transmission with new A/T
fluid. Always refill with the same volume as the drained A/T fluid.
Use the A/T fluid level gauge to check the A/T fluid level as
shown. Add A/T fluid as necessary.

●

To flush out the old A/T fluid from the transmission oil coolers, pour new A/T fluid into the A/T fluid
charging pipe with the engine idling and at the same time drain the old A/T fluid from the auxiliary trans-
mission oil cooler hose return line.

●

When the color of the A/T fluid coming out of the auxiliary transmission oil cooler hose return line is
about the same as the color of the new A/T fluid, flushing out the old A/T fluid is complete. The amount
of new A/T fluid used for flushing should be 30% to 50% of the specified capacity.

CAUTION:

●

Use only Genuine NISSAN Matic J ATF and do not mix with other fluids.

●

Using A/T fluid other than Genuine NISSAN Matic J ATF will cause deterioration in driveability
and automatic transmission durability, and may damage the automatic transmission, which is
not covered by the warranty.

●

When filling the transmission with A/T fluid, do not spill the A/T fluid on any heat generating
parts such as the exhaust manifold.

●

Do not reuse the drain plug gasket.

Install the A/T fluid level gauge and tighten the A/T fluid level gauge bolt to specification.

Drive the vehicle to warm up the A/T fluid to approximately 80

C (176

F).

Check the fluid level and condition. If the A/T fluid is still dirty,
repeat steps 2 through 6.

Install the A/T fluid level gauge in the A/T fluid charging pipe and install the A/T fluid level gauge bolt.

A/T fluid level gauge bolt

: Refer to

AT-240, "COMPONENTS"

for (2WD)

AT-243, "COMPONENTS"

for (4WD).

Drain plug

: Refer to

AT-246, "Components"

LLIA0071E

A/T fluid grade and capacity

: Refer to

MA-11, "Fluids and Lubricants"

A/T fluid level gauge bolt

: Refer to

AT-240, "COMPONENTS"

for (2WD)

AT-243, "COMPONENTS"

for (4WD).

LLIA0071E

A/T FLUID

AT-15

2007 Pathfinder

Tighten the A/T fluid level gauge bolt to specification.

A/T Fluid Cooler Cleaning

ECS00EEL

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

Position a drain pan under the A/T inlet and outlet fluid cooler tube to cooler hose connection.

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.

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.

Drain any A/T fluid from the cooler hose.

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.

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.

Insert the tip of an air gun into the end of the cooler outlet hose.

Wrap a shop rag around the tip of the air gun and the cooler out-
let hose.

Blow compressed air regulated to 5 - 9 kg/cm

(70 - 130 psi) through the cooler outlet hose for 10 sec-

onds to force out any remaining fluid.

A/T fluid level gauge bolt

: Refer to

AT-240, "COMPONENTS"

for (2WD)

AT-243, "COMPONENTS"

for (4WD).

SCIA3830E

SCIA3831E

SCIA3832E

AT-16

A/T FLUID

2007 Pathfinder

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

(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-16, "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.

Position a drain pan under the A/T inlet and outlet fluid cooler tube to cooler hose connection.

Clean the exterior and tip of the cooler inlet hose.

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.

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.

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.

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.

Tie a common white, basket-type coffee filter to the end of the
cooler inlet hose.

SCIA3830E

SCIA3831E

SCIA3833E

A/T FLUID

AT-17

2007 Pathfinder

Insert the tip of an air gun into the end of the cooler outlet hose.

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

(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

AT-17, "A/T FLUID

COOLER INSPECTION PROCEDURE"

A/T FLUID COOLER INSPECTION PROCEDURE

Inspect the coffee filter for debris.

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.

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

CO-14, "RADIATOR"

A/T FLUID COOLER FINAL INSPECTION

After performing all procedures, ensure that all remaining oil is cleaned from all components.

SCIA3834E

SCIA2967E

SCIA5659E

AT-18

A/T CONTROL SYSTEM

2007 Pathfinder

A/T CONTROL SYSTEM

PFP:31036

Cross-Sectional View

ECS00EEM

2WD models

SCIA5267E

Front planetary gear

Mid planetary gear

Rear planetary gear

Direct clutch

High and low reverse clutch

Reverse brake

Drum support

Forward brake

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

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