Bosch rexroth 12 Series - Page 55

RE 92802-01-B/2023-03-27, BoschRexrothAG
Troubleshooting | A15VSO/A15VLO series 12 55/60
Table 12: Axial piston unit malfunction table
Malfunction Possible cause Remedy
No or insufcient ow 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
Faulty mechanical drive
(e.g.defective coupling)
Contact machine/system manufacturer
Drive speed too low Contact machine/system manufacturer
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
Hydraulic uid not in optimal viscosity range Machine/system manufacturer:
Check temperature range and use suitable
h
ydr
aulic uid
Insufcient pilot pressure or control pressure Check pilot pressure or control pressure
Contact BoschRexroth Service
Malfunction of the control device or controller
of the axial piston unit
Contact BoschRexroth Service
Control of the control device defective Check control (contact machine/system
manufacturer or BoschRexroth Service)
Wear or mechanical damage to the
axial piston unit
Replace axial piston unit
Contact BoschRexroth Service