BRADEN PD12C Series Installation Maintenance And Service Manual page 35

6. Turn the sprag assembly around and slide the inner
race (with 1 snap ring and bushing retainer) through
the bushings and sprag clutch (the race will have
to be rotated in the free-wheeling direction to start
it through the sprag clutch). Install the remaining
bushing retainer and snap ring. Make certain the
snap ring is properly seated in the groove.
Be certain the snap ring is seated in the groove in
the splined bore of the inner race. This snap ring will
keep the brake clutch assembly correctly positioned
in the center of the friction brake pack. Binding of the
brake or brake failure may occur if this snap ring is
omitted.
7. Before installing the brake clutch, be sure the inner
race turns free in the opposite direction the drum
will turn to haul-in wire rope. An easy way to check
the rotation is to hold the outer race in one hand and
rotate the inner race. Install the brake clutch with
the short end of the inner race toward the motor.
8. Install a new O-ring on the motor pilot. Rotate the
motor 180° from its original position and install it
onto the hoist. Install and tighten motor capscrews
to recommended torque.
9. Install new O-rings in the brake valve and manifold
block. Attach the brake valve and manifold block to
the motor using the original capscrews and tighten
to recommended torque.
10. Connect the motor case drain hose to the motor
case drain port. NOTE: On two speed motors, the
case drain and shift drain should be connected di-
rectly to tank. DO NOT use the drain connection on
the brake valve. See "TWO SPEED MOTOR CASE
DRAIN PLUMBING" for additional information.
11. If your hoist had the brake release hose connected
directly to the motor, the original motor port must be
plugged and the hose connected to the motor pres-
sure port near the manifold block (lowering port).
12. Operate the hoist slowly in both directions and
check for oil leaks and/or unusual sounds. The
hoist should operate smoothly in both directions.
Refer to "WIRE AND BRAIDED ROPE INSTALLA-
TION" and properly install rope onto the hoist drum.
13. Before returning the hoist to full service, a light load
should be lifted and held three feet (1 meter) off the
ground to be sure the static brake is functioning
properly. The hoist should also be able to slowly
lower the load in a smooth and controlled manner.
If the hoist does not perform either of these func-
tions, refer to "TROUBLESHOOTING" for additional
information.
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