Pontiac FIREBIRD 1972 Service Manual page 1051

TURBO HYDRA-MATIC (M-38) TRANSMISSION 7G-13
FRONT GEAR SET
REAR GEAR SET
Intermediate Clutch
-
O N Direct Clutch
-
O F F Forward Clutch
-
ON
Low and R e v e r s e Clutch - O F F
Intermediate Overrun Roller Clutch - LOCKED
Low and R e v e r s e Roller Clutch
-
F R E E
W H E E LING
Intermediate O v e r r u n Band
-
O F F
p p
Fig. 7G-8 Operation in Drive R a n g e - S e c o n d Gear
FRONTGEAR SET
F R E E F R E E
,
WHEELING O N OFF O N O N OFF WHEELING
REAR GEAR SET
Intermediate Clutch
-
ON
Direct Clutch
-
ON
F o r w a r d Clutch
-
ON
Low and R e v e r s e Clutch
-
O F F
Intermediate Overrun Roller Clutch
-
FREE WHEELING
Low and R e v e r s e Roller Clutch - FREE WHEELING
Intermediate O v e r r u n Band
-
O F F
Fig. 7G-9 Operation in Drive Range - Third Gear
In direct drive, third gear, engine torque is transmitted tion. The direct clutch is now applied, transmitting torque
through the converter assembly and through the applied through the sun gear drive shell to the sun gear in a
forward clutch to the input ring gear in a clockwise direc- clockwise direction also (Fig. 7G-9).