Firebird V8-305 5.0L VIN E TBI (1989)
Clutch: All Technical Service Bulletins
A/T - New Clutch Piston Seal Design
Bulletin Number:
89-7-33
Reference Number:
977121
Publish Date:
6/89
Subject:
NEW SHORT LIP PISTON SEAL DESIGN FORWARD, 3-4, OVERRUN AND REVERSE
Models INPUT CLUTCHES
Affected:
1989 FIREBIRD MODELS WITH 700-R4/4L60
BULLETIN COVERS: (Figure 1)
Figure 1
New clutch piston seal design. The following clutch piston seals have been redesigned to include a shorter lip profile for ease of assembly:
Clutch Piston Outer Seal
Clutch Piston Inner seal
*
3-4 * 3-4
*
Forward Forward
*
Overrun Overrun
*
Reverse Input Reverse Input
Clutch pistons have not changed.
Figure 2 - THM 700-R4/HYDRA-MATIC 4L60 Transmission Identification Information