6.0 CLEANING SOLVENT & LUBRICANTS
6.1 The solvent used for cleaning the metal parts of the
“26-C” Control Valve and the Component Portions MUST
BE an aliphatic organic solution, such as mineral spirits or
naphtha, that will dissolve oil or grease and that will permit
all parts to be cleaned without abrasion.
6.2 The following lubricants MUST BE available to maintenance
persons when they are working on the “26-C” Control
Valve or any of the Component Portions.
6.2.1 #2 Silicone Grease, Wabtec Corporation Specification
M-7680-2, which is used to lubricate o-rings, o-ring
grooves and the bearing surfaces of the bushings into which
the o-ring assemblies are installed. This lubricant is to be
used when working on the Emergency or Service Valve
Portions.
6.2.2 A compound consisting of one part graphite, Wabtec
Corporation Specification M-7695-2, (AAR Specification M-
913) and two parts of SAE-20 oil by weight. This compound
is used to lubricate the threads of the choke plugs
after the choke plugs have been cleaned.
6.2.3 #4 Zinc Base Grease, Wabtec Corporation Specification,
M-7675-4, which is used to lubricate the o-ring, oring
groove, key, and key body bushing of the Combined
Cut-Out Cock and Strainer Portion.
6.2.4 Molybdenum Disulphide Grease, Wabtec Corporation
Specification M-7672-1, which is used to lubricate the
handle stem and plate of the Reservoir Release Valve Portion.
7.0 SPECIAL TOOLS
In addition to the regular shop tools, the following tools MUST
BE available when working on the “26-C” Control Valve.