PARKING BRAKE CONTROL VALVE MAINTENANCE
THIS WP COVERS:
Removal, Installation, Test, Follow-On Task
Tools and Special Tools
Tool kit, general mechanic's (item 4, WP 0171 00)
Compound, thread sealing (item 7, WP 0174 00)
Semitrailer disconnected from prime mover (refer
to WP 0007 00)
Semitrailer grounded (refer to WP 0007 00)
Air reservoir drained (refer to WP 0007 00)
Tag all lines and hoses prior to disconnecting.
Remove three air lines (2) from valve fittings (1).