FAIL-SAFE CHAMBER BRAKES RELEASE--Continued
Use manual release (caging) when air is unavailable.
Remove manual caging tool (6) from storage tube (5).
Unsnap breather cap (2) from air brake chamber (4) and insert manual caging tool (6) into access
Turn nut clockwise on manual caging tool (6) until brakeshoes are released on brakedrum.
Snap breather caps back into place on air brake chamber as
quickly as possible to prevent contaminants from fouling
interiors of air chambers.
To release brakes, turn nut counterclockwise on manual caging tool (6) until fail-safe unit is
Disconnect semitrailer grounding cables (WP 0007 00).
END OF TASK