INDEPENDENT BRAKE VALVE
This task covers:
Tool kit SC 4940-97-CL-E12
Drycleaning solvent (Item 30, Appendix B)
Independent brake valve removed
Valve assemblies are under a spring load. Use caution during disassembly procedures so that no parts fly
out, causing injury to personnel.
Before proceeding to remove the independent brake valve handle, the automatic brake valve handle must
be placed in full service position (approximately a 25 psi (172 kPa) brake pipe reduction). Brake cylinder
pressure must be applied to the locomotive, and proper procedures followed for cutting out brake
operation control on this locomotive. Failure to comply with these instructions may result in locomotive
movement which could possibly cause equipment damage and/or injury to personnel.
Before disassembly, check that handle is in RELEASE position.
When removing or repairing brake valves or components, check air lines and pipes for corrosion,
breaks, splits, or loose connections. Repair of air lines and piping consists of replacing defective
pipes, lines, and connections. Refer to TM 55-2210-223-24P for identification of piping.
Remove three nuts (1), valve body (2) and gasket (3).