CM Hurricane 5623A Manual De Funcionamiento página 10

MAINTENANCE (CONTINUED)
2. To inspect or replace the liftwheel, chain guide or stripper, it is
necessary to disassemble the hoist. Remove the load chain (See
REPLACING LOAD CHAIN, above) and then remove the handwheel
cap (656-36) and the handwheel cover support (656-35). Lift off
the handwheel cover (656-34A) and slide it down the hand chain
(656-31). Lift the hand chain out of the hand wheel (656-27) pockets.
Remove cotter pin (656- 33), castle nut (656-30) and washer (656-29)
from the drive shaft (656-10). Remove handwheel overload clutch
assembly by turning handwheel (656-27) counter clockwise. Slide
front brake disc (656-26), ratchet disc assembly (656-21) and rear
brake disc (656-26) from pressure disk (656-20). Remove retaining
ring (656-41) and then remove pressure disc (656-20) by turning
counter clockwise. Remove the handwheel side plate (656-9), by
sliding it over drive shaft (656-10). Remove the stripper (656-6) and
chain guide (656-5). Examine the stripper, chain guide, liftwheel (656-
8) and loose end connector (656-7) for wear and damage.
If the stripper, chain guide and/or loose end connector are worn
or damaged they should be replaced. If the liftwheel is not worn
or damaged, reassemble the hoist in reverse to the order given
above. If the liftwheel is to be replaced, continue to disassemble
the hoist.
NOTE: Two points of caution to be observed in disassembly and
assembly of the gears:
a. Loose rollers are used in various locations in some units.
Care must be taken so as to not lose or misplace these.
b. For proper operation, the correct number of rollers must
be installed at the rotating points. Applying grease to the
rollers will help hold them in position during assembly.
Remove the gear cover (656-1), end covers (656-4) and gears
(656-12A and 656-12B). Remove drive shaft (656-10) by sliding
it out and remove locking ring (656-11B). Remove washer
(656-11A) and liftwheel gear (656-11). Remove the liftwheel
(656-8) and replace it. The liftwheel (656-8) may require pressing
out of liftwheel bearings. Check the gears and other parts
for excessive wear, cracks and distortion. Replace parts as
necessary and then reassemble the unit in reverse to the order
in which it was disassembled. Install the load chain per manual
section "REPLACING LOAD CHAIN", above. After the hoist is
completely reassembled, it must be tested for proper operation
(See TESTING, page 10).
3. HANDWHEEL OVERLOAD CLUTCH ASSEMBLY:
To inspect or replace handwheel overload clutch assembly,
it is necessary to partially disassemble the hoist. Remove the
handwheel cap (656-36) and the handwheel cover support
(656-35). Lift off the handwheel cover (656-34A) and slide it
down the hand chain (656-31). Lift the hand chain out of the
handwheel (656-27) pockets. Remove cotter pin (656-33),
castle nut (656- 30) and washer (656-29) from the drive shaft
(656-10). Remove handwheel overload clutch assembly by
turning handwheel (656-27) counter clockwise. Use spanner
socket tool (656-45, available from CM Corp.) to remove groove
nut (656-25) from handwheel brake hub (626-22). Slide Belleville
spring washer (656-24), pressure plate (656-23), front brake
disc (656-26), handwheel (656-27) and rear brake disc
(656- 26) from handwheel brake hub (626-22). Inspect both
brake discs (656-26) and replace if excessive wear, scoring,
glazing or contamination is found. If brake disc is worn down
to the following thickness, replacement is required:
Capacity
1/2 –Ton, 1-Ton & 2-Ton
3-Ton, 5-Ton & 10-Ton
15-Ton, 20-Ton
Inspect pressure plate (656-23), handwheel (656-27) and
handwheel brake hub (626-22) friction surfaces, replace if
excessively scored.
Replace parts as necessary and then reassemble the unit in
reverse to the order in which it was disassembled. Once the
handwheel overload clutch is assembled, tighten the groove
nut (656-25) with the spanner socket tool (656-45, available
from CM Corp.) to the following torque specification.
ADJUSTMENT OF LOAD LIMITER
To adjust the load limiter:
Thickness Min. (in)
.043
.063
.063
9
(ENGLISH)
Capacity
1/2-Ton
1-Ton
2-Ton
3-Ton
5-Ton
10-Ton
15-Ton
20-Ton
These torque value will set the handwheel overload clutch at
approximately 125% of rated capacity. This setting must be
checked with the handwheel overload clutch assembled into
the hoist (See ADJUSTMENT OF LOAD LIMITER).
4. To inspect or replace the pawl or pawl spring, it is necessary
to partially disassemble the hoist. Remove the handwheel
cap (656-36) and the handwheel cover support (656-35).
Lift off the handwheel cover (656-34A) and slide it down the
hand chain (656-31). Lift the hand chain out of the handwheel
(656-27) pockets. Remove cotter pin (656-33), castle nut
(656-30) and washer (656-29) from the drive shaft (656-10).
Remove handwheel overload clutch assembly by turning
handwheel (656-27) counter clockwise. Remove retaining
ring (656-42), pawl (656- 43), and pawl spring (656-44) from
handwheel side plate assembly (656-9). Inspect pawl (656-43)
and pawl spring (656- 43) for wear, replace if worn. Replace
parts as necessary and then reassemble the unit in reverse
to the order in which it was disassembled. After the hoist is
completely reassembled, it must be tested for proper operation
(See TESTING, page 10).
5. To replace hook latch, grind off head of rivet and drive it out.
Remove and discard the latch and spring. Attach the new latch
and spring using the roll pin provided in the latch kit.
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 (656-36) from the handwheel cover (656-34A).
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. Change the adjustment of the load limiter by tightening the
groove nut (656-25) with the spanner socket tool (656-45,
available from CM Corp.) to increase the setting or by loosening
the groove nut (656-25) to decrease the setting.
5. Perform required load tests after adjustment. (See TESTING,
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.
6. Replace the center cap (656-36) in the handwheel cover
(656-34A).
Torque (in-lb)
31
71
106
128
106
142
106
142
P/N 192048547 Rev. AA January 2018