Brake Adjustment - CM HURRICANE 5623 Manual De Funcionamiento

IF BRAKE IS NOT PROPELY ADJUSTED, LOAD MAY SLIP
DOWN AND CAUSE PERSONAL INJURY AND/OR PROPERTY
DAMAGE.
TO AVOID INJURY:
• ADJUST BRAKE AS DIRECTED HEREIN.
BRAKE SPRING INSTALLATION
NOTE: For proper brake operation the brake spring must be
preloaded as described below.
1. Locate the C-shaped arm on the brake spring (656-25) in
the slot on the outside of the handwheel bushing (656-26).
2. Slide the handwheel bushing (656-26) onto the drive shaft
(656-10) with the lower arm on the brake spring (656-25)
located 90 degrees (1/4 turn) clockwise from the slot in the
brake hub (656-24).
3. Slide the handwheel bushing (656-26) all the way onto the
drive shaft (656-10) using a small screwdriver to move the
arm on the brake spring (656-25) counterclockwise and into
the slot on the brake hub (656-24).
4. The spring is now properly preloaded.
NOTE: The handwheel bushing must stay in place during the
rest of the brake assembly and adjustment process to insure
the arm on the brake spring stays engaged in the slot on the
disc hub. If this arm becomes disengaged repeat this proce-
dure.

BRAKE ADJUSTMENT

To adjust the brake:
1. Remove the hoist from the supporting structure and lay it
on a flat working surface with the handwheel facing up.
2. Remove the three screws securing the plastic center cap
and remove the cap from the handwheel cover.
3. Block the load chain by inserting a screwdriver or pin
through the load chain just below the hoist frame.
Operate the handwheel in the up direction to remove the
slack from the load chain, closing and locking the brake.
NOTE: This brake must remain closed throughout the rest
of this adjustment.
4. Rotate the handwheel slowly counterclockwise until it con
tacts a stop. Take care not to force the handwheel against
the stop, unlocking the brake.
NOTE: This handwheel must remain in this position
WARNING
throughout the rest of this adjustment.
5. Remove the setscrew from the center of the drive shaft.
6. Remove the handwheel retaining nut and washer.
7. Remove the load-limiting driver.
8. Moving the driver plate of the load-limiting driver back
and forth, locate the center of travel. Position the driver
plate in this position.
9. Taking care to keep the driver plate in the center posi
tion, place the load-limiting driver on the splined shaft
so the tips of the driver plate engage the slots in the
handwheel.
NOTE: It may be necessary to rotate the load limiting
assembly 180 degrees (1/2 turn) to locate the spline
location so that the tips of the driver plate engage
the slots in the handwheel while maintaining the
driver plate in the approximate center of its travel.
10. Hold the driver in this position and install the washer
and nut. Tighten the nut to 20Nm (180 in.-lb.) and
install and tighten the setscrew to lock this nut in place.
11. Check hoist operation by lifting and lowering a 50
pound (23 kg) load about 6 inches (150 mm). The hoist
should operate smoothly when lifting and lowering and
hold the load when the hand chain is released. Repeat
this test with a rated capacity load. If the hoist is hard to
operate in either direction or if the hoist does not hold
the suspended load repeat this adjustment procedure.
12. Replace the center cap in the handwheel cover.
ADJUSTMENT OF LOAD LIMITER
To adjust the load limiter:
1. Remove the hoist from the supporting structure and lay
it on a flat working surface with the handwheel facing
up.
2. Remove the three screws securing the plastic center cap
and remove the cap from the handwheel cover.
3. Block the load chain by inserting a screwdriver or pin
through the load chain just below the hoist frame.
Operate the handwheel in the up direction to remove
the slack from the load chain, closing and locking the
brake.
4. Loosen the two radial setscrews in the side of the slotted
round nut.
5. Change the adjustment of the load limiter by tightening
the slotted round nut to increase the setting or by loos
ening the slotted round nut to decrease the setting.
6. Perform required load tests after adjustment. (See TEST
ING, page 8). Revise the adjustment if necessary.
NOTE: The hoist should not be able to lift 150% of the
rated capacity load if the load limiter has been
properly adjusted.
7. Tighten the two radial setscrews in the slotted round
nut.
8. Replace the center cap in the handwheel cover.
LUBRICATION
If hoist is disassembled for service, repair or inspection,
remove and clean existing grease from unit and replace
with approximately 1 oz. of Poliplex 2 (Century
Lubricants Co.) grease or equal lubricant to the exterior
surface of the drive shaft, gears, internal thread of
brake hub, surface of liftwheel bushings (1/2 ton unit),
bushings in the gear side plate and gear cover, internal
and external surfaces of handwheel bushings and rim of
handwheel cover.
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