Pvpvm Module - Danfoss PVG 32 Service Manual
Proportional valve group
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Also See for PVG 32:
- Technical information (76 pages) ,
- Service manual (15 pages) ,
- Application manual (13 pages)
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Service Manual
PVG 32 Proportional Valve Group
PVG 32 Component Troubleshooting
PVPVM module
Failure mode
Leaking externally between
PVPVM and PVB
Valve stack can not build pressure
per valve spec.
©
Danfoss | February 2017
PVS plugs
For specifications and operating parameters on PVG 32 valves, refer to PVG 32 Technical Information
Manual 520L0344.
Description: Mid-inlet module only for closed center systems.
Location: Mounted between multiple PVB's in a valve stack.
Function: Provides pressure and tank connections to the valve stack allowing increased flow.
Cause
Uneven mounting surface and mounting
screw torque
Tie rods torqued too tight
Flow exceeding 61 gpm
Option PVLP (shock valve) not seating
correctly in cavity caused by valve not being
installed correctly or it has failed
* Flatness in millimeters - T= 0.35 mm X number of PVB modules + 1
Corrective action
Ensure the valve stack is mounted on a even surface and torque
down correctly
Replace tie rod kit which include section seals and torque to 28
Nm [248 lbf•in]
Lower flow to 61 gpm, and replace the tie rod kit and seals
Install components correctly or replaced damaged components
11039167 | AX00000031en-US0301 | 35
P107 707E
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Table of Contents
Troubleshooting
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Questions and answers
После нескольких поворотов катка гидравлика уходит в аварию при перезагрузке снова срабатывает несколько раз и останавливается в аварии.
The Danfoss PVG 32 hydraulic system could go into fault mode after several turns of the roller due to the following possible causes:
1. Contamination in Hydraulic Oil – Dirt or debris in the oil can affect valve operation.
*Check*: Take an oil sample.
*Corrective Action*: Flush the system and refill with clean, filtered fluid per OEM specifications.
2. Air in Hydraulic Pilot Lines – Air trapped in the signal lines can cause unstable operation.
*Check*: Inspect for air in the signal lines.
*Corrective Action*: Bleed air from the hose connection at the valve section.
3. Low Hydraulic Oil Supply – Insufficient oil can cause pressure drops and improper function.
*Check*: Verify fluid level in the reservoir.
*Corrective Action*: Refill with clean, filtered fluid per OEM specifications.
4. Faulty Hydraulic Remote Actuator – A malfunctioning actuator can lead to inconsistent valve response.
*Check*: Measure signal pressure from the remote hydraulic controller.
*Corrective Action*: Repair or replace the actuator.
5. External Hydraulic Pilot Pressure Too Low – If pressure is too low, the main spool may not function properly.
*Check*: Measure external pilot pressure from the pilot pump and check for restrictions.
*Corrective Action*: Ensure the pilot pressure meets the required specifications.
6. Leaking or Burst Supply Hose – A damaged hose can lead to pressure loss and system faults.
*Check*: Inspect supply lines to the valve stack.
*Corrective Action*: Repair or replace damaged hoses.
These potential causes should be systematically checked and corrected to restore proper system operation.
This answer is automatically generated