Troubleshooting axial piston pumps
BOMAG
73
008 921 86
7.4
No or insufficient pressure
Faulty mechanical drive (e.g. defec-
tive coupling).
Check and repair the drive.
Poor drive power.
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.
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.
Drive unit defective (e.g. hydraulic
motor or cylinder).
Check the drive unit, replace if nec-
essary.
Fluctuations in pressure/volumetric
flow
Axial piston unit not or insufficiently
purged.
Completely purge the axial piston
unit.
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 too hot.
Excessive input temperature on axi-
al piston unit.
Check the system, e.g. malfunction
of the cooler, pressure fluid level in
tank too low.
Malfunction of the pressure control
valves (e.g. high pressure relief
valve, pressure override, pressure
controller).
Consult the service department.
Malfunction of the flushing valve
(not for nominal size 18).
Consult the service department.
Wear of the axial piston unit.
Replace the axial piston unit.
Fault
Possible cause
Remedy
Go
to
Discount-Equipment.com
to
order
your
parts
