Installation Instructions; Re-A - Bosch Rexroth A6VM series 71 Manual

72 A6VM series 71 | Axial piston variable motor

Installation instructions

Installation instructions
General
The axial piston unit must be filled with hydraulic fluid and
air bled during commissioning and operation. This must
also be observed following a longer standstill as the axial
piston unit empty via the hydraulic lines.
Particularly in the installation position "drive shaft
upwards", filling and air bleeding must be carried out com-
pletely as there is, for example, a danger of dry running.
The leakage in the housing area must be directed to the
reservoir via the highest drain port (T
For combinations of multiple units, make sure that the
respective case pressure in each unit is not exceeded. In
the event of pressure differences at the drain ports of the
units, the shared drain line must be changed so that the
maximum permissible case pressure of all connected units
is not exceeded at any operational conditions.
If this is not possible, separate drain lines must be laid.
To achieve favorable noise values, decouple all connecting
lines using elastic elements and avoid above-reservoir
installation.
In all operating conditions, the drain line must flow into the
reservoir below the minimum fluid level.
Note
In certain installation positions, an influence on the control
characteristics can be expected. Gravity, dead weight and
case pressure can cause minor shifts in control character-
istic curves and changes in response time.
Key
U Bearing flushing / air bleed port
F Filling / air bleeding
T , T
Drain port
1 2
h Minimum required immersion depth (7.87 inch (200 mm))
t min
h Minimum required distance to tank base (3.94 inch
min
(100 mm))
Bosch Rexroth Corp., RE-A 91610/12.2015
, T
).
1 2
Installation position
See examples 1 to 8 below.
Additional installation positions are available upon request.
Recommended installation position: 1 and 2
Below-reservoir installation (standard)
Below-reservoir installation means that the axial piston unit
is installed outside of the reservoir below the minimum
fluid level.
Installation position
1
h
t min
h
min
T
U
1
T
2
2
h
t min
h
min
T
2
T
1
3
h
t min
h
min
T
1
U
4
h
t min
h
min
U
T
2
T
Air bleed Filling
T
T
U
T
T
2
U T
1
1
2
1
1