4TH Clutch Hydraulic Circuit

To air check 4th clutch hydraulic circuit, apply air to the 4th clutch apply pressure port. (For proper location, refer to "Pressure Ports - Transaxle Case Diagram".)
If 4th clutch does not apply properly when performing the air check, possible sources of leakage include:
- Damaged 4th clutch piston seal (1).
- Damaged/missing delivery tube sleeve (2).
- Damaged clutch housing-to-output shaft O-ring seal under 4th clutch (3).
- Delivery tube bushing in output shaft mislocated or loose (4).
- Output shaft tube retaining pin out-of-position (5).
- Damaged output shaft hub O-ring seals (6).
- Damaged output shaft tube seal ring (7).
- Damaged servo piston cover O-ring (8).
- Output shaft check ball missing (9).

NOTICE: A large leak in 1st gear circuit can cause a loss of other forward gears.