Bomag BW 156 D-3 Service Manual page 65

Travel pump
The travel pump is a swash plate operated Sauer-Sundstrand axial piston pump with variable
displacement for hydrostatic power transmission in a closed hydraulic circuit.
Fig. 3 Hydraulic diagram for travel pump
1 Travel pump
2 Control
3 Charge pressure relief valve
4 Check valves
5 Multi-function valves
BW 156/177 D-3/PD-3
BW 178/179 D-3/PD-3
Service Training
from charge pressure filter
to vibration circuit charge port
brake, travel speed range selector
- D 5 -