Accession Number:

ADA066581

Title:

Investigation of the Cause of Hydraulic System Malfunction of M60A1 (AOS) Tanks using MIL-H-46170 Synthetic-Base Hydraulic Fluid.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY MOBILITY EQUIPMENT RESEARCH AND DEVELOPMENT COMMAND FORT BELVOIR VA

Report Date:

1978-07-01

Pagination or Media Count:

34.0

Abstract:

This report covers the investigation by the Chemical Subgroup of the Fire-Resistant Hydraulic Fluid Task Force. The Task Force was organized in 1975-76 to address the problems arising from the introduction of the new less-flammable MIL-H-46170, Hydraulic Fluid, Rust-Inhibited, Synthetic Hydrocarbon Base, Fire-Resistant. The problems were associated with stuckinoperative servo-values in the gun control systems of the M60A1 AOS tanks. The problems were subsequently identified with one companys product which contained a trace amount of a water-coupling inhibitor, polypropylene glycol. The inhibitor in the presence of absorbed moisture caused coprecipitation of the rust inhibitor which deposited on the critical surfaces of spool valve systems. Author

Subject Categories:

  • Lubricants and Hydraulic Fluids
  • Combat Vehicles

Distribution Statement:

APPROVED FOR PUBLIC RELEASE