Preventive Maintenance - Columbus McKinnon CM Serie Manuel D'entretien, D'opération Et De Pièces

4. When assembling the latch to the hook, the end of the rivet
must be peened over. When peening over the rivet, only apply
enough force to form the head and retain the rivet. Excessive
force will deform the latch and make the latch inoperable.
REEVING LOAD CHAIN
A. 1/2, 1, 2 (SINGLE REEVE) TON HOISTS
Attach approximately 20"(508mm) of soft wire to the loose end of the
chain. Pass the wire over the top of the liftwheel and down between
the liftwheel and the chain guide. Position the chain so that the first,
as well as the third, link stands on edge with the weld away from the
liftwheel and the second link lays flat on the liftwheel. After the chain
has been started, pull hand chain in the hoisting direction until about
2 feet (0.6M) of chain has passed over the liftwheel. The wire should
now be removed from the chain. Remove the cotter pin from the
loose end pin and slide the loose end pin to the side into the gear
housing, leaving approximately 1/2"(12.7mm) of the pin protruding
from the geared side plate. Loop the chain, making sure there are no
twists, up to the loose end pin and slide the pin through the last link
of the chain. Slide the loose end pin into hole in the handwheel side
plate until the cotter pin hole is visible. Secure the loose end pin by
reinstalling the cotter pin and spreading the legs of the cotter pin.
CHAIN GUIDE
LOOSE END PIN
Failure to properly install the load chain between chain guide and
liftwheel may cause the chain to lift out of the liftwheel pockets and
allow the load to drop.
Feed load chain between liftwheel and chain guide, as shown above,
before attaching it to the loose end pin..
B. 2 (DOUBLE-REEVE), 3 AND 5 TON
The load chain must have an odd number of links. After attaching
the chain to the loose end pin per above, operate in the hoisting
direction until the load end of the chain is approximately 5 feet
(1.5M ) long. Run chain thru the hook block (first link around the
sheave must stand on edge) and up to the dead end block.
Secure chain to dead end block using the stud, nut and cotter
pin. Refer to illustration below.
On the 3 and 5 ton units, twisted load chain will cause the chain to
jam in the liftwheel or sheave wheels and this may break the chain
and allow the load to drop.
Check each stage of reeving the chain to be sure it has no twists.
CMK_12346 622 Series Hoist Manual Rev AB_v1.indd 7
LIFTWHEEL
TO AVOID INJURY:
TO AVOID INJURY:
REEVING
3 AND 5-TON HOIST
EXTERIOR FINISH
The exterior surfaces of the hoists have a durable, scratch resistant
finish. Normally, the exterior surfaces can be cleaned by wiping with
a cloth. However, if the finish is damaged, compatible touch-up
paint can be purchased from CM. Order one case (12-12 oz.-354mL
aerosol cans) of orange touch-up paint Part Number 84190. Touch-
up paint is only available in case quantities. See below for ordering
information.

PREVENTIVE MAINTENANCE

In addition to the periodic inspection procedure, a preventive
maintenance program should be established to prolong the useful
life of the hoist and maintain its dependability and continued
safe use. The program should include the periodic inspections
with particular attention being paid to the lubrication of various
components using the recommended lubricants.
TESTING
Before using, all altered, repaired or used hoists that have not been
operated for the previous 12 months should be tested by the user for
proper operation. First, test the unit without a load and then with a
light load of 50 pounds (23Kg.) times the number of load supporting
chains to be sure that the hoist operates properly and that the brake
holds the load when the hand chain is released. Next test with a
load of 125% of rated capacity. In addition, hoists in which load
sustaining parts have been replaced should be tested with 125% of
rated capacity by or under the direction of an appointed person and
written report prepared for record purposes.
NOTE: For additional information on inspection and testing, refer
to Code B30.16 "Overhead Hoists" obtainable from ASME Order
Department, 22 Law
7
(ENGLISH)
LOOSE
END PIN
DEAD END
BLOCK
Manual P/N: 192052171 Rev AB November 2018
11/7/18 8:55 AM