1 - 2 - 3 - 4 Clutch Plate Installation

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Fig 1: 1-2-3-4 Clutch Plate Component View

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
1	1 - 2 - 3 - 4 Clutch (Waved) Plate CAUTION: Ensure an opening between the external splines of the waved plate is centered over the missing snap ring groove punch in the housing. Failure to do so may cause damage to the clutch assembly.
2	1 - 2 - 3 - 4 Clutch Plate CAUTION: Ensure all clutch plates are centered in the housing. When installing the first steel clutch plate, ensure an opening between the external splines is centered over the missing snap ring groove punch in the housing. Align the external splines of each remaining steel clutch plate with the first steel clutch plate. Failure to do so may cause damage to the clutch assembly. Procedure Install Qty: 5 plates - 6L45/6L50/6L80 Install Qty: 5 or 6 plates - Model Dependent - 6L90
3	1 - 2 - 3 - 4 Clutch Plate Assembly Procedure Install Qty: 5 plates - 6L45/6L50/6L80 Install Qty: 5 or 6 plates - Model Dependent - 6L90
4	1 - 2 - 3 - 4 Clutch Backing Plate CAUTION: Align the external splines of the backing plate with the external splines of the steel clutch plates. Failure to do so may cause damage to the clutch assembly. CAUTION: Ensure the 1-2-3-4 Clutch Backing Plate is installed correctly to prevent mechanical damage. Procedure If the plate has UP stamped on it, install that side up. If the plate has 3 circle marks spaced 120 degrees apart stamped on it, install that side up. If no identification marks are present, install sharp edge up, chamfer side down.
5	1 - 2 - 3 - 4 Clutch Backing Plate Retaining Ring CAUTION: Depending on the housing configuration, align the retaining ring gap with the missing snap ring groove punch in the housing or the offset punch in the housing. Failure to do so may cause damage to the clutch assembly. Procedure After the retaining ring is installed, determine clutch piston travel in order to verify if the correct selective retaining ring is being used. Refer to 1-2-3-4 Clutch Backing Plate Retaining Ring Measurement .