Service Training Drum drive motor On all single drum rollers of series BW 145 D-3/ DH-3 / PDH-3 the front drum is driven by a hydraulic radial piston motor. On the DH / PDH models these motors are designed for two speed ranges (half displacement = 2nd gear), on the D model the motor is designed with a fixed displacement.
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Fig. 11 Drum drive motor Poclain BW 145 D-3 / DH-3 / PDH-3 1
Drive shaft
8
Oil distributor
2
Tapered roller bearing
9
Brake discs
3
Bearing plate
10
Brake housing with brake connection
4
Cam race
11
Brake piston
5
Working pistons
12
Brake spring
6
Cylinder block
13
Piston, speed range selection (only DH/PDH models)
BW 145 D-3 / DH-3 / PDH-3
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