Load Drop Check Valve - Danfoss PVG 32 Service Manual

Service Manual
PVG 32 Proportional Valve Group
PVG 32 Component Troubleshooting

Load drop check valve

Failure mode
Load drops excessively when
trying to lift load
© Danfoss | February 2017
Pressure compensator valve
Pressure compensator spool
Description: Keeps the load from dropping when transitioning from spool neutral to lifting the load.
Location: PVB (valve section) module.
Function: Optional drop check to keep the load from dropping. Prevents high pressure functions from
supplying low pressure functions when both are actuated simultaneously.
Cause
Worn parts.
Hard particle in seat area does not allow the
seat to seal
Serviceability: Load drop check valve is not serviceable. If you suspect valve malfunction, replace
complete module.
P107 744E
Pressure compensator spool
P107 822
Corrective action
Replace complete PVB module
Replace complete module
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