Pressure Testing
WARNING:- While testing, be careful of the rotating front wheels.
- Make sure lifts, jacks, and safety stands are placed properly.
CAUTION:
- Before testing, be sure the transmission fluid is filled to the proper level.
- Warm up the engine before testing.
SYSTEM PRESSURE
1. Raise the car.
2. Warm up the engine, then stop the engine and connect a tachometer.
3. Connect the special tool to each inspection hole(s). Torque to 18 Nm (12 ft. lbs.).
CAUTION: Connect the A/T pressure gauge securely, be sure not to allow dust and other foreign particles to enter the inspection hole.
4. Start the engine, and measure the respective pressure as follows.
- Line Pressure
- Clutch Pressure
- Clutch Low/High Pressure
- Throttle A/Throttle B Pressure
- Governor Pressure
5. Install new washer and the sealing bolt in the inspection hole, and tighten to the specified torque. Torque to 18 Nm (12 ft. lbs.).
NOTE: Do not reuse old aluminum washers.
LINE PRESSURE
1. Set the parking brake, and block both rear wheels securely.
2. Run the engine at 2,000 rpm.
3. Shift to N or P position.
4. Measure line pressure.
NOTE: Higher pressures may be indicated if measurements are made in shift lever positions other than N or P position.
CLUTCH PRESSURE MEASUREMENT
WARNING: While testing, be careful of the rotating front wheels.
1. Set the parking brake, and block both rear wheels securely.
2. Raise the front of the car, and support it with safety stands.
3. Allow the front wheels to rotate freely.
4. Run the engine at 2,000 rpm.
5. Measure each clutch pressure.
CLUTCH LOW/HIGH PRESSURE MEASUREMENT
WARNING: While testing, be careful of the rotating front wheels.
1. Allow the front wheels to rotate freely.
2. Remove the cable end of the throttle control cable from the throttle control drum.
NOTE: Do not loosen the locknuts, simply unhook the cable end.
3. Start the engine and let it idle.
4. Shift to D4 position.
5. Slowly move the throttle linkage to increase engine rpm until pressure is indicated on the A/T pressure gauge. Then release the throttle linkage, allowing the engine to return to an idle, and measure the pressure reading.
6. With the engine idling, lift the throttle control drum up approximately 1/2 of its possible travel and increase the engine rpm until pressure is indicated on the gauge, then measure the highest pressure reading obtained.
7. Repeat steps 5 and 6 for each clutch pressure being inspected.
THROTTLE A/THROTTLE B PRESSURE MEASUREMENT
WARNING: While testing, be careful of the rotating front wheels.
1. Allow the front wheels to rotate freely.
2. Remove the cable end of the throttle control cable from the throttle control drum.
NOTE: Do not loosen the locknuts, simply unhook the cable end.
3. Shift to D4 or D3 position.
4. Run the engine at 1,000 rpm.
5. Measure full-closed throttle A/B pressure.
6. Move the throttle control drum to full-opened throttle position.
7. Measure full-opened throttle A/B pressure.
GOVERNOR PRESSURE MEASUREMENT
WARNING: While testing, be careful of the rotating front wheels.
1. Allow the front wheels to rotate freely.
2. Run the vehicle at 38 mph (60 km/h).
3. Measure the governor pressure.