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7.2
Pump overview
BOMAG
66
008 921 86
7.2
Pump overview
The travel pump is directly driven by the crankshaft of the engine via an elastic coupling, the pump speed is
therefore identical with the engine speed.
The steering/charge/vibration pump is a directly driven gear pump, which is connected with the travel pump via
a coupling. The pump speed is identical with the engine speed.
Fig. 1 Pump assembly
POS
Designation
POS
Designation
1
Travel pump
A
Work output, travel pump forward
2
Steering/charge/vibration pump
B
Work output, travel pump reverse
3
Elastic coupling
S
Pressure port for charge circuit
4
Petrol engine
IN
Suction side steering/charge/vibration pump
OUT
Pressure side steering/charge/vibration pump
M
A
Pressure test port, pressure A
M
B
Pressure test port, pressure B
T
1
Leak oil port
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