Bosch rexroth 1 Series - Page 62

62/68 Troubleshooting
Bosch Rexroth AG, A20V(L)O Series 1, RE 93100-01-B/2019-09-10
Table 21: Axial piston unit malfunction table
Malfunction Possible cause Remedy
No orinsufficient flow 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
Faulty mechanical drive (e.g. defective coupling) Contact machine/system manufacturer
Drive speed too low Contact machine/system manufacturer
Insufficient suction conditions, e.g. 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, e.g. optimize inlet conditions,
usesuitable hydraulic fluid
Fill thesuction line with hydraulic fluid
Remove foreign particles from thesuction line
Hydraulic fluid not inoptimal viscosity range Machine/system manufacturer:
Check temperature range and use suitable
hydr
aulic fluid
Insufficient 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