7.4
Troubleshooting axial piston pumps
BOMAG
72
008 921 86
No or insufficient volumetric flow
Faulty mechanical drive (e.g. defec-
tive coupling).
Check and repair the drive.
Drive speed too low.
Consult the service department.
Insufficient suction conditions, e.g.
air in the suction line, inadequate di-
ameter of the suction line, excessive
viscosity of the pressure fluid, ex-
treme suction height, too low suction
pressure, foreign bodies in the suc-
tion line.
Completely purge the axial piston
unit, fill the suction line with pres-
sure fluid.
Remove foreign bodies from inside
the suction line.
Pressure fluid not within the optimal
viscosity range.
Use appropriate pressure fluid.
External control and setting facilities
defective.
Check the external control.
Pilot or control pressure too low.
Check pilot and control pressure,
consult the service department.
Functional disturbance in the control
facility or the regulator on the axial
piston unit.
Consult the service department.
Wear of the axial piston unit.
Replace the axial piston unit.
Mechanical damage to the axial pis-
ton unit.
Replace the axial piston unit.
Fault
Possible cause
Remedy
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