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 MEASURING
1. Raise the vehicle.
2. Warm up the engine, then stop the engine and connect a tachometer.
3. Connect the special tools to each inspection hole. Torque to 18 Nm (13 ft. lbs.).
CAUTION: Connect the special tools 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
- Throttle B Pressure
- Clutch Pressure
- Clutch Low/High Pressure
5. Install a new washer and the sealing bolt in the inspection hole, and tighten to the specified torque. Torque to 18 Nm (13 ft. lbs.).
NOTE: Do not reuse old sealing washers.
LINE PRESSURE MEASUREMENT
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.
NOTE: Higher pressures may be indicated if measurements are made in shift lever positions other than N or P position.
4. Measure line pressure.
CLUTCH PRESSURE MEASUREMENT
1. Set the parking brake, and block both rear wheels securely.
2. Raise the front of the vehicle, and support it with safety stands in the proper locations.
3. Allow the front wheels to rotate freely.
4. Run the engine at 2,000 rpm.
5. Measure each clutch pressure.
LOW/HIGH PRESSURE TEST
1. Set the parking brake, and block both rear wheels securely.
2. Raise the front of the vehicle, and support it with safety stands in the proper locations.
3. Attach the gauge set to the appropriate pressure inspection holes.
4. Remove the throttle control cable end of the throttle control lever.
NOTE: Do not loosen the locknuts; simply unhook the throttle control cable end.
5. Warm up the engine to normal operating temperature (the radiator fan comes on).
6. With the engine idling, shift to D4.
7. Slowly move the throttle linkage to increase engine rpm until pressure is indicated on the appropriate gauge. Then release the throttle linkage, allowing the engine to return to idle, and record the pressure reading.
8. With the engine idling, lift the throttle control lever up approximately 1/2 of its possible travel, and increase the engine rpm until pressure is indicated on the appropriate gauge. Record the highest pressure reading obtained.
9. Repeat steps 7 and 8 for each clutch pressure being inspected.
THROTTLE B PRESSURE MEASUREMENT
1. Set the parking brake securely and block the wheels.
2. Run the engine at 2,000 rpm.
3. Disconnect the throttle control cable from the throttle control lever.
4. Measure fully-closed throttle B pressure.
5. Move the throttle control lever to fully-opened throttle position.
6. Measure fully-opened throttle B pressure.