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 ro-
tated 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.
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 mo-
tor 180° from its original position and install it onto the
hoist. Install and tighten motor capscrews to recom-
mended 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 recom-
mended torque.
10. Connect the motor case drain hose to the motor case
drain port. NOTE: On two speed motors, the case drain
and shi
ft
drain should be connected directly 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 direct-
ly to the motor, the original motor port must be plugged
and the hose connected to the motor pressure port near
the manifold block (lowering port).
12. Operate the hoist slowly in both directions and check for
oil leaks and/or unusual sounds.
Th
e hoist should oper-
ate smoothly in both directions. Refer to “WIRE AND
BRAIDED ROPE INSTALLATION” and properly install
rope onto the hoist drum.
13. Before returning the hoist to full service, a light load
should be li
ft
ed and held three feet (1 meter) o
ff
the
ground to be sure the static brake is functioning properly.
Th
e 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 functions, refer to “TROUBLE-
SHOOTING” for additional information.
Be certain the snap ring is seated in the groove in the
splined bore of the inner race.
Th
is snap ring will keep the
brake clutch assembly correctly positioned in the center of
the friction brake pack. Binding of the brake or brake fail-
ure may occur if this snap ring is omitted.