Air Pressure Checks: Notes

1. Condition of "No Drive" (no movement of output shaft) can exist, even with correct transmission fluid pressure. Inoperative clutches or bands may cause this problem.
2. Inoperative units can be located through series of checks by substituting air pressure for fluid pressure to determine location of malfunction.
3. Loosen oil pan bolts and allow transmission fluid to drain. Remove oil pan and control valve body. Apply air at points indicated. See Fig 1 . Minimum of 40 psi or maximum of 90 psi is needed to pressure check transmission.