Single, Double, T riple and Thru-drive Pumps Overhaul Service Manual V-PUVN-TS001-E October 2002
3
Section I —
Introduction
A. P urpose of Manual
Section II –
Description
A. General
Relat ed Publications –
Service parts information and
installation dimensions are not
contained in this manual. The
parts catalogs and installation
drawings are available from
authorized distributors or
Danfoss sales engineers.
Model Codes – There are
many variations within each
basic model series, which are
covered by variables in the
model code. A complete
breakdown of the codes
covering these units is in
Tables 1 –3 on pages 5 –7.
Service inquiries should
always include the complete
unit model number as
stamped on the pump cover.
This manual has been prepared
to assist the users of Danfoss ’s
high performance VMQ single
pumps in properly installing,
maintaining and repairing their
unit. The single, double, and
triple pumps are described in
detail and their theory of
operation is discussed in
addition to instructions for
installation, maintenance,
and overhaul.
The general series of models
covered are VMQ125S,
VMQ135S, VMQ145S,
VMQ125T, VMQ135T,
VMQ145T, VMQ22525,
VMQ23525, VMQ24525,
VMQ24535, VMQ3352525,
and VMQ3453525. The
information given applies
to the 30-39th Design VMQ.
B. General Information
Pumps in this series are used
to develop hydraulic fluid flow
for the operation of industrial
and mobile equipment. The
positive displacement pumping
cartridges are of the rotary
vane type with shaft side loads
hydraulically balanced. The flow
rate depends on the pump size
and the speed at which it
is driven.
All units are designed so that
the direction of rotation,
pumping capacity and port
positions can be readily
changed to suit particular
applications.
Inlet Cover
Cam Ring
Inlet Hole Thru Ring
Inlet Plate
Under Vane Pin
Inlet Wafer Plate
Rotor
Vane
Outlet Wafer Plate
Outlet Plate
Primary Shaft Seal
Shaft
Secondary Shaft Seal
Shaft Bearing
Outlet Body
Cover/Body O-Ring
Figure 1a.
Cutaway View of Typical High Performance VMQ Single Vane Pump
Summary of Contents for Vickers VMQ125S
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