Eaton Vickers PVH57C-RF-2S-11-C25V-31 Technical Data Manual

Test Procedure to Evaluate Fluids in
Open Loop Axial Piston Pumps
Technical Data V-PUPI-TS022-E
This test procedure is to evaluate fluids for use in
open loop axial piston pumps. It consists of 250 hours
of actual test time (not including break-in or per-
formance running). The operation temperature is
dependent upon the capability of the test fluid as
specified by the fluid manufacturer or the rated
temperature specified for the pump, whichever is
lower. Inlet fluid temperature must be maintained per
fluid/pump rating throughout the complete test.
The pump to be used is a PVH57 with a pressure
compensator and load sensing control, model code
PVH57C-RF-2S-11-C25V-31.
™ ™

Table of Contents

Fluid Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pump Break-In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pump Performance Check Procedure . . . . . . . . . . . . . . . . . . . . . . . 3
Disassembly and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Test Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Fifty-Hour Pressure Cutoff Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Two Hundred-Hour Cyclic Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Final Fluid Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Fluid Pass/Fail Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Appendix A - Efficiency Formulas. . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Appendix B - Control Pressure Hysteresis Test . . . . . . . . . . . . . . . . 10
Pump Performance Check Record . . . . . . . . . . . . . . . . . . . . . . . . . 11
Fluid Properties Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Piston/Bore Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pump Model
PVH57C-RF-2S-11-C25V-31