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Table of Contents
OILGEAR TYPE "PVM" PUMPS -
-011/-014/-022/-025/-034/-046/
-064/-065/-075/-076/-098/-130
PURPOSE OF INSTRUCTIONS
These instructions will simplify the installation,
operation, maintenance and troubleshooting of
Oilgear type "PVM" pumps.
REFERENCE MATERIAL
Fluid Recommendations .....................................................................................Bulletin 90000
Contamination Evaluation Guide.........................................................................Bulletin 90004
Filtration Recommendations ...............................................................................Bulletin 90007
Piping Information ...............................................................................................Bulletin 90011
Installation of Vertically Mounted Axial Piston Units ...........................................Bulletin 90014
PVM Open Loop Pumps Sales Brochure........................................................ Bulletin 47070-B
Revised November, 2004
Bulletin 947070-B
SERVICE INSTRUCTIONS
Figure 1. Typical Oilgear "PVM" Open Loop Pump
THE OILGEAR COMPANY
Milwaukee, Wisconsin 53219
THE OILGEAR COMPANY
Become familiar with the construction, principle of
operation and characteristics of your pump to help
you attain satisfactory performance, reduce shut-
down and increase the pump's service life. Some
pumps have been modified from those described in
this bulletin and other changes may be made
without notice.
2300 South 51st Street
Bulletin 947070-B
OILG0173
1
Bulletin 947070-B
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Table of Contents
Related Manuals for OilGear PVM-098
Summarization of Contents
SERVICE INSTRUCTIONS
PURPOSE OF INSTRUCTIONS
Explains the purpose of the manual.
REFERENCE MATERIAL
Lists related bulletins and brochures.
Safety First
SAFETY SYMBOLS
Explains signal words used for safety warnings.
PREPARATION AND INSTALLATION
MOUNTING
Covers pump mounting configurations and requirements.
PIPING AND FITTINGS
Details piping recommendations and case drain line requirements.
FILTRATION
FLUID COOLING
Addresses auxiliary cooling for continuous or peak load operation.
AIR BREATHER
Covers air breather maintenance and fluid level checks.
TROUBLESHOOTING
Unresponsive or Sluggish Control
Lists causes and remedies for slow or unresponsive pump control.
Insufficient Pump Volume
Identifies issues leading to reduced pump output and their solutions.
Irregular or Unsteady Operation
Addresses pump operation that is inconsistent or unstable.
Loss of Pressure
Details potential causes and solutions for pressure loss.
PRINCIPLE OF OPERATION
Full Stroke Operation
Details the pump's operation at full displacement.
Pressure Compensating Control
Explains how the pump adjusts output based on system pressure.
Load Sensing Control
Explains load sensing and its variations for system control.
Electronic Pressure Control
Describes electronically controlled pressure compensation.
TESTING AND ADJUSTING
PISTON PUMP TESTING
Details how to test the pump for wear.
DISASSEMBLY
VALVE PLATE GROUP DISASSEMBLY
Describes removal of the valve plate assembly.
ROTATING GROUP
DRIVESHAFT GROUP
Describes how to remove the driveshaft.
SWASHBLOCK GROUP
Covers the removal of the swashblock assembly.
CONTROL GROUP
INSPECTION
Outlines inspection procedures for pump components.
VALVE PLATE GROUP INSPECTION
Details inspection of valve and port plate surfaces.
ASSEMBLY
CONTROL GROUP ASSEMBLY
Details the installation of control group components.
SWASHBLOCK GROUP ASSEMBLY
Covers the reassembly of the swashblock group.
DRIVESHAFT GROUP ASSEMBLY
Describes the reassembly of the driveshaft group.
ROTATING GROUP ASSEMBLY
Instructions for installing the rotating group.
PARTS LIST
ROTATING GROUP ASSEMBLY
Lists parts for the rotating group.
SWASHBLOCK ASSEMBLY GROUP
Lists parts for the swashblock assembly.
DRIVESHAFT ASSEMBLY GROUP
Lists parts for the driveshaft assembly.
AFTER SALES SERVICES
STAY-ON-STREAM SERVICE
Describes a service program for proactive maintenance and problem prediction.
SERVICE SCHOOLS
Details training programs for maintenance personnel.
SPARE PARTS AVAILABILITY
Emphasizes stocking genuine parts for minimizing downtime.
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