Overview; General Instructions; Remove The Unit; Keep It Clean - Danfoss PVG 100 Service Manual

Service Manual
Introduction

Overview

General Instructions

PVG 100 Proportional Valves
This manual includes information for servicing PVG 100 valves. It includes a description of the units and
their individual components, troubleshooting information, and minor repair procedures.
Performing minor repairs may require removal from the vehicle/machine. Thoroughly clean the unit
before beginning maintenance, or repair activities. Since dirt and contamination are the greatest enemies
of any type of hydraulic equipment, follow cleanliness requirements strictly. This is especially important
when changing the system filter and when removing hoses or plumbing.
A worldwide network of Danfoss Global Service Partners is available for major repairs. Danfoss Global
Service Partners are trained by the factory and certified on a regular basis. You can locate your nearest
Global Service Partner using the distributor locator at www.Danfoss.com. Click on the Sales and Service
link.
For specifications and operating parameters on PVG 100 valves, refer to PVG 100 Technical Information
Manual 520L0720.
C
Caution
Do not attempt to service PVG valves without build sheet specifications for reference.
Follow these general procedures when repairing PVG 100 valves.

Remove the unit

Chock the wheels on the vehicle or lock the mechanism to inhibit movement. Prior to performing repairs,
remove the unit from the vehicle/machine. Be aware that hydraulic fluid may be under high pressure
and/or hot. Inspect the outside of the motor and fittings for damage. Cap hoses after removal to prevent
contamination.

Keep it clean

Cleanliness is a primary means of assuring satisfactory motor life, on either new or repaired units. Clean
the outside of the motor thoroughly before disassembly. Take care to avoid contamination of the system
ports. Cleaning parts by using a clean solvent wash and air drying is usually adequate.
As with any precision equipment, all parts must be kept free of foreign materials and chemicals. Protect
all exposed sealing surfaces and open cavities from damage and foreign material. If left unattended,
cover the motor with a protective layer of plastic.

Replace all O-rings and gaskets

It is recommended that all O-rings be replaced. Lightly lubricate all O-rings with clean petroleum jelly
prior to assembly.

Secure the unit

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