44 - AUTOMATIC GEARBOX - ZF: DESCRIPTION AND OPERATION (page 2 of 4)
- Make
- Land Rover
- Model
- Discovery 300Tdi Discovery
44
AUTOMATIC GEARBOX
2
DESCRIPTION AND OPERATION
Power flow
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.
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. Epicyclic gear set 10 also rotates as a solid unit.
Parts & tools for this job Staging For Land Rover Discovery
- PARTTransmission filter kitSearch: Land Rover Discovery transmission filter kit
- FLUIDAutomatic transmission fluidSearch: Land Rover automatic transmission fluid
- TOOLFluid transfer pumpSearch: fluid transfer pump
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