Pvpc Plug For External Pilot Control; Pvmr Friction Module - Danfoss PVG 32 Service Manual

Service Manual
PVG 32 Proportional Valve Group
PVG 32 Component Troubleshooting

PVPC plug for external pilot control

Failure mode
Main spool moves slow, or not at
all, in all sections

PVMR Friction Module

Failure mode
Flow changes
Flow changes or will not stay in
detent
42 | © Danfoss | February 2017
Description: Pilot oil supply from another pump.
Location: On the end of the PVP.
Function: Provides a hydraulic pilot supply to the valve stack.
Cause
External hydraulic pilot pressure is too low
PVPC plug for external pilot
Description: Mechanical friction hold.
Location: Mounted on main spool in the PVB.
Function: Infinite mechanical positioning of the main spool.
Cause
Excessive flow across the main spool
Vibration
Broken spring
Check for proper assembly of parts
Corrective action
Check external hydraulic pressure from pilot pump and/or
restrictions
Tee into pressure port
to measure pressure
PVPC with check valve
P107 734E
Corrective action
Reduce flow (100 l/min or less)
Reduce vibration
Replace broken springs
Install parts correctly per specification sheet
11039167 | AX00000031en-US0301