Firebird V8-305 5.0L VIN F FI (1987)
Figure 3Checkball Locations On Transmissions With Auxiliary Valve Bodies
SERVICE ACTION:
When servicing any 1982 through 1987 THM 700-R4 transmission without an auxiliary valve body (Figure 3), the lo and reverse checkball (55B, Figure
2) must be located in the control valve body.
When servicing any 1987 THM 700-R4 transmission produced after October 6, 1986 (Julian Date 279) the forward clutch checkball (#12) must be
located in the auxiliary valve body (55B, Figure 3). Do not install a checkball in the control valve body.
NOTICE:
If the forward clutch checkball (#12) is installed in either the valve body or over the orificed cup plug (359, Figure 3) in the auxiliary
valve body, the following conditions can occur:
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Delayed N-D, P-D or R-D
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Harsh N-D, P-D Shifts
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Slipping on Hard Accelerations
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Forward Clutch Distress
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No Upshift
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1-2 Tie-Up/Lo-Rev Clutch Distress and 2-4 Band Distress