Clutch Air Pressure Tests
Inoperative clutches can be located using a series of tests by substituting air pressure for fluid pressure using (special tool #10383, Plate, Clutch Pressure Test).
The clutches may be tested by applying air pressure to their respective passages. The valve body must be removed. To make air pressure tests, proceed as follows:
The compressed air supply must be free of all dirt and moisture. Use a pressure of 5-8 bar (73-116 psi).
Remove the valve body. Refer to REMOVAL AND INSTALLATION When testing is finished install valve body. Refer to REMOVAL AND INSTALLATION Fill the transmission. Refer to FLUID AND FILTER/STANDARD PROCEDURE .
If any clutch does not appear to be functioning with the air, add some 8HP transmission fluid and try the test again. Some circuits will not operate without fluid.