30
18. If the brake discs are misaligned, preventing the instal-
lation of the clutch, then with a hand pump, apply 750-
1,000 PSI to the brake-release port. The brake discs will
move freely with the brake released, permitting align-
ment of the discs, brake clutch, and input sun gear.
19. Install the hoses and fittings to the brake cylinder release
port.
20. Install the -6 ORB 45-degree elbow on the motor case
drain port.
21. Install a new O-ring on the motor pilot, then lubricate
with petroleum jelly or gear oil.
15. Install the motor side plate onto the base. Tighten
side-plate capscrews to the recommended torque using
hardened steel washers.
16. Lubricate the pilot, oil seal and bearing surfaces of the
brake cylinder and carefully install brake cylinder into
base and drum. Locate the brake-release port toward the
lower right corner of the base with the motor bolt holes
vertical. Tighten brake cylinder capscrews to recom-
mended torque.
17. Install the brake clutch assembly with the short end of the
inner race toward motor.
When installed correctly, the inner race should turn free-
ly in the opposite direction the drum turns to pull wire
rope in. An easy way to check the rotation is to hold the
outer race in one hand, and rotate the inner race.
If the clutch free wheels in the wrong direction, disassem-
ble the clutch and reverse the inner race. Refer to “Brake
Clutch Service” for additional information.
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 fail-
ure may occur if this snap ring is omitted.
Care must be taken to assure the primary thrust plate re-
mains properly located in its counterbore when the motor
is installed for the first time, or is being reinstalled on the
hoist. It is possible for the primary thrust plate to drop out
of its counterbore and become wedged between the planet
gears and the planet carrier. If the hoist is operated with the
primary thrust plate wedged between primary gears and
the planet carrier, or with a thrust washer out of position,
severe damage to internal hoist components could result.
CAUTION
!
!
