2ND/Rev Clutch Hydraulic Circuit Air Check

To air check 2nd clutch hydraulic circuit, apply air to 2nd clutch apply pressure port (refer to Front of Transaxle illustration for proper location). When applying air to 2nd clutch a small amount of cross leakage between 2nd and 3rd clutch is normal and can cause 3rd clutch to apply within 2-3 seconds if 3rd clutch apply pressure port is blocked. This is due to a small amount of leakage around the input shaft feed tube bushing which is located between 2nd and 3rd clutch.








If 2nd clutch does not apply properly when performing the air check, possible sources of leakage include:

^ Damaged 2nd clutch piston. (1)

^ Worn or damaged input shaft hub seal ring(s.) (2)

IMPORTANT:
If air/bubbles are observed coming from the lube port when the 2nd clutch apply port is pressurized, this may be an indication that the input shaft nut is loose or not properly seated

^ Input shaft nut not torqued properly/not fully seated. (3)

IMPORTANT:
To verify that the bushing is at the correct depth, refer to the procedure titled "Misplaced or Loose Input Shaft Inner Tube Bushing Check" in the Automatic Transaxle Service Manual.

^ Delivery tube bushing in input shaft mislocated or loose. (4)

^ Damaged clutch housing to input shaft 0-ring under 2nd clutch. 05

^ Damaged clutch housing to input shaft 0-ring seal between 2nd and 3rd clutches. (6)

^ Input shaft inner tube retaining pin out of position or missing. (7)

^ Damaged input shaft inner tube 0-ring seal. (8)

^ Damaged or missing delivery tube sleeve. (9)

IMPORTANT:
For detailed information on delay/harsh engagement into reverse, refer to the "Delay/Harsh Engagement Into Reverse Diagnostic Chart" in the Automatic Transaxle Service Manual.

If the complaint is reverse, inspect the forward/reverse servo piston following the procedures below in addition to the 2nd/Rev Clutch hydraulic circuit mentioned above.

1. Plug off the reverse pressure from the forward/reverse servo to 2nd clutch apply port.

2. Place a rag over 1st, 3rd, and 4th oil to servo piston port to avoid spray.

CAUTION:
AS PRESSURE IS APPLIED TO THE REVERSE PRESSURE TO FORWARD/RE- VERSE SERVO PISTON PRESSURE PORT AIR PRESSURE WILL CAUSE A SPRAY-BACK OF OIL OUT OF THE 1ST; 3RD, AND 4TH OIL-TO-SERVO PISTON PORT. IN THE EVENT OF HOT TRANSAXLE OIL, THIS COULD RESULT IN PERSONAL INJURY.

3. Apply pressure to the reverse pressure to forward/reverse servo piston pressure port.

When following the above procedures, the forward/reverse servo piston should move, pulling the fork toward the reverse driven gear. If the forward/reverse servo piston does not apply properly, inspect for:

^ Damaged forward/reverse servo piston cover 0-ring. (10)

^ Damaged forward/reverse servo piston seal. (11)