17-20. CENTER SUPPORT REPAIR (4L80-E) (Cont'd)
Air pressure must not exceed 15 psi (103 kPa) when air checking
clutch piston, or injury to personnel or damage to equipment may
Clutch piston must move up and down freely when air pressure is
Apply compressed air through center support bolt hole (7) to check operation of clutch piston (6).
Install four packing retainers (4) on oil delivery sleeve (5).
Perform step 7 for 1997-1998 transmissions only.
Install oil cooler pipe fitting seal (8) in center support (3).