Service Manual
PVG 32 Proportional Valve Group
PVG 32 Component Troubleshooting
Maximum oil flow adjustment screws for ports A and B
Failure mode
Cylinder/motor functions too slow
or too fast
Leaking past adjusting screws
32 |
©
Danfoss | February 2017
Load drop check valve
Load drop check valve
Load drop check valve
Description: Optional mechanical flow limiter.
Location: PVM manual control handle.
Function: Determines the stroke of the main spool in the PVB.
Cause
Mechanical stop screws out of adjustment per
valve spec.
Check torque on seal nut 8 Nm [71 lbf•in]
C
Caution
When adjusting main spool flow ensure that electrical or hydraulic actuators are not active at the time, if
so equipped.
P107747E
P107 748E
Corrective action
Use a 8mm open end wrench to loosen the jam nut and then 3mm
internal hex wrench to adjust the mechanical adjusting screw CCW
to increase speed. After adjusting hold the adjusting screw and
torque the jam nut to 8 Nm [70 lbf•in] maximum
Retorque or replace seal nuts
11039167 | AX00000031en-US0301
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