25
BRAKE CYLINDER PRESSURE TEST
1. Install the –4 JIC
fi
tting into the brake release port. Con-
nect a hand pump with accurate 0-2000 psi (0-13,800
kPa) gauge and shut-o
ff
valve to this
fi
tting. Apply 1000
psi (6,900 kPa) to the brake. Close shut-o
ff
valve and let
stand for
fi
ve (5) minutes. If there is any loss of pressure
in
fi
ve (5) minutes, the brake cylinder should be disas-
sembled for inspection of the sealing surfaces and brake
piston.
2. WHILE PRESSURE IS APPLIED AND THE BRAKE RE-
LEASED, install the brake clutch assembly in the brake
pack, short end of the inner race toward motor. Turn the
clutch back and forth as you align the outer race splines
with the brake disc splines.
3. Release the pressure on the brake cylinder then remove
the brake clutch assembly.
Th
e brake cylinder assembly is
now complete and ready to be installed in the hoist.
