Power Flow
DESCRIPTIONAll automatic shifts are controlled by the valve block and an electronic governor driven by the output shaft.
Power Flow: 1ST GEAR D SELECTED:
1ST GEAR D SELECTED
With D selected 1st gear engaged, clutches (4) and (11) are operative. The front planet gear carrier of gear set (9) is locked against the housing through freewheel (15) when the engine is pulling, but freewheels when the vehicle is coasting. Epicyclic gear set (10) rotates as a solid unit with the front planet gear carrier. in selector position 1, with 1st gear engaged, clutch (8) operates to prevent the loss of drive on the overrun through freewheel (15), to provide engine braking.
Power Flow: 2ND GEAR D SELECTED:
2ND GEAR D SELECTED
Clutches (4), (6), (7) and (11) are engaged. Freewheel (15) overruns. The hollow shaft with the sun wheel of epicyclic gear set (9) is locked, see 44M7019 Epicyclic gear set (10) also rotates as a solid unit.
Power Flow: 3RD GEAR D SELECTED:
3RD GEAR D SELECTED
Clutches (4), (6), (7) and (11) are engaged. Freewheel (15) and (16) are overrun. Epicyclic gear set (9) and (10) rotate as a solid unit at a ratio of 1:1. Above pre-determined road speed clutch (2) locks the gear power output direct to the engine, bypassing the torque converter.
Power Flow: 4TH GEAR D SELECTED:
4TH GEAR D SELECTED
Clutches (4),(6),(7) and (12) are engaged. Freewheel (14), (15) and (16) are overrun. Epicyclic gear set (9) rotates as a solid unit. The hollow shaft with the sun wheel of epicyclic gear set 10 is locked. Above a pre-determined road speed, clutch (2) locks the gearbox power input direct to the engine, by-passing the torque converter.
Power Flow: REVERSE GEAR:
REVERSE GEAR
Clutches (5),(8) and (11) are engaged. Since the front planet gear carrier of epicyclic gear set (9) is locked, the direction of output-shaft rotation is reversed. Epicyclic gear set (10) also rotates as a solid block.