BRADEN PD12C Series Installation Maintenance And Service Manual page 25

9. Apply petroleum jelly to the entire sealing surface of
the brake cylinder and to the piston seal. Install the
brake cylinder over the motor support being careful
to avoid damaging the piston seal or motor support
O-ring. (A press may be necessary to avoid cocking
the brake cylinder during installation.)
10. Install motor support capscrews and evenly tighten
to recommended torque.
BRAKE CYLINDER PRESSURE TEST
1. Install the –4 J.I.C. fi tting into the brake release port.
Connect a hand pump with accurate 0-2000 psi (0-
13,800 kPa) gauge and shut-off valve to this fi tting.
Apply 1000 psi (6,900 kPa) to the brake. Close
shut-off 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 disassembled for inspec-
tion of the sealing surfaces and brake piston.
2. WHILE PRESSURE IS APPLIED AND THE BRAKE
RELEASED, install the brake clutch assembly in the
brake pack, short end of the inner race toward mo-
tor. 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 re-
move the brake clutch assembly. The brake cylinder
assembly is now complete and ready to be installed
in the hoist.
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