Firebird V8-305 5.0L VIN F FI (1987)
FIGURE 1
DATE OF PRODUCTION CHANGE:
(Figure 1)
Beginning January 27, 1987 (Julian Date 027) all THM 700-R4 transmissions were produced with an auxiliary accumulator valve body assembly (Figure
2) that has a stepped bore at one end of the piston pin and a new cover with an oval instead of a round exhaust hole at the other end of the pin to retain
the accumulator piston pin in place.
SERVICE ACTION:
The new auxiliary accumulator valve body (377) and cover (371) can be used on any 1987 THM 700-R4 transmission that has an auxiliary valve body
(377).
NOTICE:
If the accumulator piston pin has come out of the auxiliary valve body, check for burnt forward and overrun clutches.
SERVICE PARTS INFORMATION:
PART NUMBER
DESCRIPTION
MODELS AFFECTED
8663597
Auxiliary Accumulator
MRM,
MXM
Valve Body Assembly
FAM,
MAM
MFM, MMM
8667036
Auxiliary Accumulator
MCM,
MTM, PRM, TAM, TBM
Valve Body Assembly
YXM,
TJM, TKM, TNM, TRM
8667037
Auxiliary Accumulator
MDM,
MHM, MKM, MPM,
Valve Body Assembly
MWM
8667038
Auxiliary Accumulator
TSM,
YAM, YDM, YFM, YKM
Valve Body Assembly
YLM,
YNM, YPM, YSM, YZM
