Bosch Rexroth Hagglunds CBm - Draining and Venting the Motor

52/72 Installation
Bosch Rexroth AB, RE 15300-WA, Version 06.2021
7.4.6 Draining and venting the motor
Horizontal mounting
When the motor is installed with the shaft in the horizontal plane, the highest of
the four drain outlets D1, D2, D3 or D4 must always be used see Fig. 53.
Drain line must be connected to the tank with a minimum of restrictions, to ensure
that the maximum case pressure is not exceeded.
A magnetic plug is pre assembled from factory in connection T8, in the drain outlet
D3. If other drain outlet is used (D1-D2, D4-D8), the magnetic plug should be moved
to the corresponding connection (T7 or T9) in the selected drain outlet.
For maintenance, see chapter 10.3: Maintenance plan.
Fig. 53: Horizontal mounting
Vertical mounting
When the motor is mounted vertically, the highest of the drain outlets D1-D8 must
be used. Flushing (lubrication) of radial seal from low pressure oil is necessary.
A) Motor shaft pointing downwards
The drain line must be connected to one of the drain outlets in the connection block.
(See Fig. 54, alt. A).
The ushing connection F2 shall be connected to low pressure oil connection.
With bidirectional drives, use the connection with lowest average pressure.
(Connection to high pressure will increase the motor drain ow). It is advisable to
t the adapter and the hose to the motor before tting the torque arm.
B) Motor shaft pointing upwards
The drain line must be connected to one of the drain outlets in the shaft end
housing. (See Fig. 54, alt. B).
The ushing connection F1 on the shaft end housing should be connected to the
low pressure oil connection. With bidirectional drives, use the connection with
lowest average pressure. (Connection to high pressure will increase the motor
drain ow).
It is advisable to t the adapter and the hose to the motor before tting the torque
arm.
Magnetic plug, T8
Flushing ow inlet
DD00046409
Drain line connection