Trouble-shooting 8 Maintenance and Repairs
54 User Manual RKP-II (CA53461-001; Version 1.0, 10/07) © 2007 Moog GmbH
8.2 Trouble-shooting
Trouble-shooting
8.3 Moog Service Addresses
Moog Service Addresses
Should repairs be needed because of any trouble with the pump, these
should only be carried out by one of our service technicians or by an
authorized service location.
Ö Chap. "2.2.3 Structural Modifications", Page 9
Ö Chap. "8.3 Moog Service Addresses", Page 54
Trouble Cause Repair
Radial Piston Pump
Peculiar noises Cavitation,
Pump is sucking air,
speed is too high,
mechanical damage
Configure the inlet suction so that
the pressure in the suction line is
not below minimum,
limit the speed settings,
contact us and have damaged
parts replaced
Flow volume too low
or non-existent
Pump does not cut off,
leakage in the pump,
comparing performance of drive
motor and pump shows no match,
wear caused by dirt,
engine damage
Check inlet suction,
check for wear,
check adjustable parts,
contact us and have damaged
parts replaced
Pressure too low or
non-existent
Pump does not cut off,
leakage in the pump,
comparing performance of drive
motor and pump shows no match,
wear caused by dirt,
engine damage
Check cut-off,
seal leaky lines,
check actuation,
contact us and have damaged
parts replaced
Fluctuations in the
pressure or
displacement
Pump is sucking air,
leakage in the pump,
wear caused by dirt,
engine damage
unstable compensator
Seal leaking areas,
check the configuration of the
antivibration orifice and if
necessary, use the correct
antivibration orifice,
check the dimensions of the
control oil hose and if necessary,
replace with the correct control oil
hose, contact us and have
damaged parts replaced
Tab. 16: Trouble-shooting
Visit www.moog.com/worldwide to find the location nearest you for
application engineering, repairs and service.
