Automatic Transmission: Maintenance Nissan Titan I

Checking And Changing A/T Fluid

1. Increase ATF oil temperature to 80°C (176°F) first, then check and adjust oil level at 65°C (149°F).

Note. The A/T has both water cooling and air cooling systems. The air cooling system has a bypass valve. When ATF oil temperature is at or below 50°C (122°F), it does not flow through the air cooled system. If A/T oil level is adjusted without flow throughout the entire system, the level will be 10 mm lower than required. Therefore, all piping should be filled with oil when adjusting level.

CHANGING A/T FLUID

1. Increase ATF oil temperature to 80°C (176°F) once.
2. Stop engine.
3. Remove the tightening bolt for ATF level gauge.
4. Drain ATF from drain plug and refill with new ATF. Always refill same volume with drained fluid. To replace the ATF, pour in new fluid at the charging pipe with the engine idling and at the same time drain the old fluid from the radiator cooler hose return side. When the color of the fluid coming out is about the same as the color of the new fluid, the replacement is complete. The amount of new transmission fluid to use should be 30 to 50% of the stipulated amount. ATF: NISSAN Matic Fluid J Fluid capacity: 10.6 l (11-1/4 US qt, 9-3/8 lmp qt) CAUTION: Use only Genuine NISSAN ATF Matic Fluid J. Do not mix with other fluid. Using automatic transmission fluid other than Genuine NISSAN ATF Matic Fluid J will cause deterioration in driveability and automatic transmission durability, and may damage the automatic transmission, which is not covered by the warranty. When filling ATF, take care not to scatter heat generating parts such as exhaust. Drain plug: :34 N.m (3.5 kg-m, 25 ft-lb)
5. Increase ATF oil temperature to 80°C (176°F) once.
6. Check fluid level and condition. Refer to «CHECKING A/T FLUID»(ref-169880-S08111593222004121700000) . If fluid is still dirty, repeat step 2. through 5.
7. Install the removed ATF level gauge in the fluid charging pipe. Level gauge bolt: 5.1 N.m (0.52 kg-m, 45 in-lb)

Scheme 143

1. Warm up engine.
2. Check for fluid leakage.
3. Remove the tightening bolt for ATF level gauge.
4. Before driving, fluid level can be checked at fluid temperatures of 30° to 50°C (86° to 122°F) using "COLD" range on ATF level gauge as follows. Park vehicle on level surface and set parking brake. Start engine and move selector lever through each gear position. Leave selector lever in "P" position. Check fluid level with engine idling. Remove ATF level gauge and wipe clean with lint-free paper. CAUTION: When wiping away the fluid level gauge, always use lint-free paper, not a cloth one. Re-insert ATF level gauge into charging pipe as far as it will go. CAUTION: To check fluid level, insert the ATF level gauge until the cap contacts the end of the charging pipe, with the gauge reversed from the normal attachment conditions. Remove ATF level gauge and note reading. If reading is at low side of range, add fluid to the charging pipe. CAUTION: Do not overfill.
5. Increase ATF oil temperature to 80°C (176°F) once.
6. Make the fluid temperature approximately 65°C (149°F). NOTE: Fluid level will be greatly affected by temperature as shown in figure. Therefore, be certain to perform operation while checking data with 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".
7. Re-check fluid level at fluid temperature of approximately 65°C (149°F) using "HOT" range on A/T fluid level gauge. CAUTION: When wiping away the fluid level gauge, always use lint-free paper, not a cloth one. To check fluid level, insert the ATF level gauge until the cap contacts the end of the charging pipe, with the gauge reversed from the normal attachment conditions as shown.
8. Check fluid condition. If fluid is very dark or smells burned, refer to check operation of A/T. Flush cooling system after repair of A/T. If ATF contains frictional material (clutches, bands, etc.), replace radiator and flush cooler line using cleaning solvent and compressed air after repair of A/T. Refer to «RADIATOR»(ref-169421-S19750326362004120800000) in ENGINE COOLING SYSTEM - TITAN article. .
9. Install the removed ATF level gauge into the fluid charging pipe. Level gauge bolt: : 5.1 N.m (0.52 kg-m, 45 in-lb)

Scheme 144

A/T FLUID COOLER CLEANING

Whenever an automatic transmission 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 contaminate 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.

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1. Position an oil pan under the automatic transmission's inlet and outlet cooler hoses.
2. Identify the inlet and outlet fluid cooler hoses.
3. Disconnect the fluid cooler inlet and outlet rubber hoses from the steel cooler tubes or bypass valve. NOTE: Replace the cooler hoses if rubber material from the hose remains on the tube fitting.
4. Allow any A/T fluid that remains in the cooler hoses to drain into the oil pan.
5. Insert the extension adapter hose of a can of Transmission Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler outlet 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 Transmission 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 air gun tip and of the cooler outlet hose.
9. Blow compressed air regulated to 5 - 9 kg/cm 2 (70 - 130 psi) through the cooler outlet hose for 10 seconds 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 steel lines to the transmission.
12. Remove the banjo bolts.
13. Flush each steel line from the cooler side back toward the transmission 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 transmission 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 «A/T FLUID COOLER DIAGNOSIS PROCEDURE»(ref-169880-S37600014832004121700000) .

At low fluid temperature

When the A/T fluid temperature drops below the prescribed temperature, in order to speed up the action of each friction element, the line pressure is set higher than the normal line pressure characteristic.

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Fluid leakage and fluid level check

1. Inspect for fluid leakage and check the fluid level. Refer to «CHECKING A/T FLUID»(ref-169880-S08111593222004121700000) .

Fluid condition check

Inspect the fluid condition.

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