Roller Thrust Bearing And Race - Pontiac TRANS AM 1977 Service Manual

TURBO HYDRA-MATIC 4 0 0 AUTOMATIC TRANSMISSION 7A4-15
NOTE: I F PITTING OR ROUGHNESS, AS SHOWN I N
BELOW, IS APPARENT ON ANY THRUST BEARIN
RACE, THEY MUST BE REPLACED.
Fig. 7A4-10 Roller Thrust Bearing and Race
C. NOT OPERATING PROPERLY.
3. DETENT SYSTEM
A. DETENT SWITCH ACTUATED (PLUNGER
STUCK) OR SHORTED.
B. DETENT WIRING SHORTED.
C. DETENT SOLENOID STUCK OPEN.
D. DETENT FEED ORIFICE IN SPACER PLATE
BLOCKED (SEE FIG. 7A4-8).
E. DETENT SOLENOID LOOSE.
F. DETENT VALVE BORE PLUG DAMAGED.
G. DETENT REG. VALVE PIN SHORT.
4. PUMP
A. PRESSURE REG. AND/OR BOOST VALVE
STUCK.
B. PUMP CASTING POROUS OR IMPROPERLY
MACHINED.
C. PRESSURE BOOST VALVE INSTALLED
BACKWARDS OR IMPROPERLY MACHINED.
D. ALUMINUM BORE PLUG HAS HOLE OR
IMPROPERLY MACHINED.
E. PRESSURE BOOST BUSHING BROKEN OR
IMPROPERLY MACHINED.
F. WRONG TYPE PRESSURE REGULATOR
VALVE.
5. CONTROL VALVE ASSEMBLY.
A. CONTROL VALVE ASSY. TO SPACER GASKET
OFF LOCATION.