BRAKE INTERLOCK VALVES MAINTENANCE
THIS WP COVERS:
Removal, Installation, Test, Follow-On Task
Tools and Special Tools
Tool kit, general mechanic's (item 4, WP 0156 00)
Compound, thread sealing (item 7, WP 0159 00)
Lockwashers (4) (item 78, WP 0160 00)
Semitrailer disconnected from prime mover (refer
to WP 0007 00)
Semitrailer grounded (refer to WP 0007 00)
There are two brake interlock valves and they are both
replaced the same way. This procedure replaces one
brake interlock valve.
Identify lines prior to disconnecting from brake interlock valve.
Disconnect three lines (1) and remove fittings (4) from brake interlock valve (6) (refer to
Remove two screws (2), lockwashers (3), and brake interlock valve (6) from bottom loading
valve (5). Discard lockwashers.