General Information

31TH Transmission:

Pressure testing is a very important step in the diagnostic procedure. These tests usually reveal the cause of most transaxle problems.

Before performing pressure tests, check fluid level and condition, as well as control cable adjustments. Fluid must be at operating temperature (150 to 200 degrees F).

Install an engine tachometer. Raise vehicle on a hoist that allows front wheels to turn, and position tachometer so it can be read.

Disconnect throttle cable and shift cable from transaxle levers so they can be controlled from outside the vehicle.

Attach 150 psi gauges to ports required for test being conducted. A 300 psi gauge (C-3293, or equivalent) is required for reverse pressure test at rear servo.

Test port locations are shown.