1-2-3-4 Clutch Piston Installation

Fig 1: View Of 1-2-3-4 Clutch Piston

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
1	1-2-3-4 Clutch Piston NOTE: DT-47798 seal protector prevents the piston seal lip from damage during installation. Apply a thin coat of ATF to the I.D. of DT-47798 seal protector to ease the installation of the piston. Special Tool DT-47798 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 CAUTION: Regulate the air pressure to 276 kPa (40 psi) maximum. High pressure could cause the piston to over travel and damage the piston seals. NOTE: Place the retainer onto DT-47799-1 which is part of DT-47799 spring compressor. Compressing the spring using DT-47799-2 which is part of DT-47799 spring compressor, will install the retainer into the retainer groove. Apply shop air to the clutch fluid feed hole in the clutch housing to verify proper piston operation. Special Tool DT-47799 Clutch Piston Spring Compressor For equivalent regional tools, refer to Special Tools .