Pressure Compensator - Danfoss PVG 100 Service Manual

Service Manual
PVG 100 Component Troubleshooting
Failure mode
Will not build pressure in A or B port

Pressure Compensator

Failure mode
Valve section unstable flow
30
PVG 100 Proportional Valves
Cause
Valve may be damaged and not able to seal
Serviceability: This valve may be disassembled and cleaned, however, internal parts are not available
separately. If you suspect valve malfunction, replace with a new valve and test system operation.
PVLP valve
Description: Maintains a pump margin across the compensator.
Location: PVB (Valve section) Module.
Function: In a pressure-compensated basic module the compensator maintains a constant pressure drop
across the main spool – both when the load changes and when a module with a higher load pressure is
actuated.
Cause
High wear allows leakage
Serviceability: This valve may be disassembled and cleaned, however, internal parts are not available
separately. If you suspect valve malfunction, replace with a new valve and test system operation.
Pressure compensator valve
11048807 • Rev BA • October 2014
Corrective action
Replace with correct part number per valve
specification
9
10
10
8
PVLA
7
PVLP
Corrective action
Replace complete module
Pressure Compensator Spool
P107 975E
10
40 Nm
[354 lbf•in]
13 mm
P107 924E