Bosch rexroth 12 Series - Malfunction table

BoschRexrothAG, RE 92802-01-B/2023-03-27
54/60 A15VSO/A15VLO series 12 | Troubleshooting
14�2 Malfunction table
Table 12: Axial piston unit malfunction table
Malfunction Possible cause Remedy
Unusual noises Insufcient air bleeding of the
hydraulic system
Fill the axial piston unit, suction line for the
hydraulic pump and the reservoir
Completely air bleed the axial piston unit and
hydraulic system
Check correct installation position
Insufcient suction conditions,
e.g.,insufcient dimensioning of the suction
line, viscosity of the hydraulic uid too high,
suction height too high, suction pressure
too low, foreign particles in the suction line,
impermissible lter in the suction line
Machine/system manufacturer:
Check the system, e.g.optimize inlet
conditions, use suitablehydraulic uid
Fill the suction line with hydraulic uid
Remove foreign particles from the suction line
Drive speed too high Machine/system manufacturer:
Reduce drive speed
Wrong direction of rotation Machine/system manufacturer:
Check correct direction of rotation,
seechapter7.4.1 "Preparation" on page30
Improper mounting of the axial piston unit Check the mounting of the axial piston
unit according to the specications of the
machine/system manufacturer – observe
tightening torques
Improper mounting of assembled parts,
hydraulic lines or improper installation of the
coupling
Fasten assembled parts according to the
parameters provided by the coupling tting
manufacturer
Resonances due to adefective or unsuitable
elastic coupling
Check the specication of the elastic
coupling and/or exchange defective or
worn coupling
Valves and controller vibrate Optimize the adjustment of the controller of
the axial piston unit and the pressure limitation
in the hydraulic system
Mechanical damage to the axial piston unit
(e.g.bearing damage)
Replace axial piston unit
Contact BoschRexroth Service
Increased, unusual vibration Bearings worn Contact BoschRexroth Service