Piston and Spring Installation

Fig 1: Identifying 1-2-3-4 Clutch Components

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	1-2-3-4 Clutch Piston Tip: J-46623: seal protector prevents the piston seal lip from damage during installation. Apply a thin coat of ATF to the I.D. of J-46623: seal protector to ease the installation of the piston. Special Tools: J-46623: Piston Seal Protector For equivalent regional tools, refer to Special Tools .
2	1-2-3-4 Clutch Spring
3	1-2-3-4 Clutch Spring Retainer Ring CAUTION: Refer to Fastener Caution . Procedure: The retainer opening should be supported by a spline tooth of the case. Install J-46632: spring compressor and DT-48056: spring compressor bridge and retain to the case using 2 case cover assembly bolts. Tighten: 12 N.m (9 lb ft). Turn the DT-48056: spring compressor bridge compressor bolt to compress the 1-2-3-4 Clutch Spring until the retaining ring groove is exposed. Push retainer ring into the groove. Remove DT-48056: spring compressor bridge and J-46632: spring compressor. Air check the piston operation by applying air to the 1-2-3-4 clutch feed passage in the case. Excessive air leaks indicate damage to the clutch piston seal. Special Tools DT-48056: Spring Compressor Bridge J-46632: Piston Spring Compressor For equivalent regional tools, refer to Special Tools .

Callout

Component Name

1-2-3-4 Clutch Piston
Tip: J-46623: seal protector prevents the piston seal lip from damage during installation. Apply a thin coat of ATF to the I.D. of J-46623: seal protector to ease the installation of the piston.
Special Tools:
J-46623: Piston Seal Protector
For equivalent regional tools, refer to Special Tools .

1-2-3-4 Clutch Spring

1-2-3-4 Clutch Spring Retainer Ring

CAUTION: Refer to Fastener Caution .

Procedure:

The retainer opening should be supported by a spline tooth of the case.
Install J-46632: spring compressor and DT-48056: spring compressor bridge and retain to the case using 2 case cover assembly bolts.
Tighten: 12 N.m (9 lb ft).
Turn the DT-48056: spring compressor bridge compressor bolt to compress the 1-2-3-4 Clutch Spring until the retaining ring groove is exposed.
Push retainer ring into the groove.
Remove DT-48056: spring compressor bridge and J-46632: spring compressor.
Air check the piston operation by applying air to the 1-2-3-4 clutch feed passage in the case.
Excessive air leaks indicate damage to the clutch piston seal.

Special Tools

DT-48056: Spring Compressor Bridge
J-46632: Piston Spring Compressor

For equivalent regional tools, refer to Special Tools .