52/60 Troubleshooting
Bosch Rexroth AG, A10VO, A10VSO, A10VSNO Series 32, RE 92714-01-B/04.2018
14.2 Malfunction table
Table 14: Axial piston unit malfunction table
Malfunction Possible cause Remedy
Unusual noises Insufficient 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
Insufficient suction conditions, for example,
insufficient dimensioning of the suction line,
viscosity of the hydraulic fluid too high,
suction height too high, suction pressure
too low, foreign particles in the suction line,
impermissible filter in the suction line
Machine/system manufacturer: check the
system, for example, optimize inlet conditions,
use suitable hydraulic fluid
Fill the suction line with hydraulic fluid
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 31
Improper mounting of the axial piston unit Check the mounting of the axial piston unit
according to the specifications of the machine/
system manufacturer – observe tightening
torques
Improper mounting of assembled parts,
hydraulic lines or improper installation of the
coupling
Mount assembled parts according to the
information provided by the coupling fitting
manufacturer
Valve and controller vibrate Optimize the adjustment of the axial piston unit
controller and the pressure limitation controller
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
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