Recommended Spare Parts - Columbus McKinnon CM 653 Serie Manual Del Equipo

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MAINTENANCE

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2. To replace the liftwheel or stripper,

completely disassemble the unit:

remove the chain (See REPLACiNG

LoAD CHAiN, page 7) and then

remove the brake nut, cotter pin and

spacer (19), free chaining knob (17),

lever (16), check washer (18), lever

ratchet (33), brake cover (14), friction

discs (12), ratchet (13), spring (6) and

friction hub (11). on the gear side,

remove the gear cover (8), gears (5)

and pinion (7). Remove snap ring and

liftwheel gear (23). Being careful not to

loose the rollers, remove the side plate

assembly (1). Slide the liftwheel (22)

out of the side plate (2), being careful

not to loose the rollers. The stripper (4)

can also be removed now.

Prior to re-assembly, check all parts for

excessive wear, cracks and distortion.

Replace parts as necessary and then

re-assemble the unit in reverse to the

order given above, making sure to install

the chain guide rollers (10) and upper

hook (25) and pin (26). After assembly,

install the chain (See REPLACiNG LoAD

CHAiN, page 7) and then test the unit

(See TESTiNG, page 8).

3. The latch is secured to the hook (upper

and lower) by a rivet. To remove the

latch, it is necessary to remove the

head of the rivet by grinding or drilling.

For the replacement of the latch, refer

to the paragraphs under assembly

instructions.

ASSEMBLY

1. Thread the friction hub (11 ) onto

the pinion shaft (7 ) and assemble

the friction discs and the ratchet on

the friction hub (See Figure 8).Place

the spring (6) over the friction hub

and pinion. Place the brake cover

assembly (14) on the frame and thread

the lever ratchet (33) onto the pinion

shaft. Firmly seat the lever ratchet and

secure the brake cover assembly to

the frame using the four nuts (9).

pawl

Ratchet

Friction

Hub

Friction

disc

Figure 8 - Brake assembly

Place the check washer (18) on the

pinion shaft so that there is 0.094 to

0.312 inches (2 to 8 mm) between the

edge of the check washer and the

raised stop on the lever ratchet hub

(See Figure 9).

SERIES 653

make sure the directional lever is in

the neutral ("N") position and the pawl,

spring and shaft (20) are in the lever

assembly (16), attach the lever assembly

to the brake cover (14) using the two

0.094 to 0.312 in.

(2 to 8mm

lever

Ratchet

Figure 9 - position of Check Washer

locknuts, screw and lockwasher (15).

Place the free chaining knob (17) on the

lever ratchet hub (33). Place the spacer

(19) over the pinion shaft, thread the

brake nut (19) onto the pinion shaft, and

firmly tighten the nut. Back off the nut

one to two flats and insert the cotter pin

(19). Bend the legs of the cotter pin

to secure.

2. When assembling the latch to the

hook, the end of the rivet must be

peened over. When peening over rivet,

only apply enough force to form a

head to retain the pin. Excessive force

will deform the latch and make the

latch inoperable.

3. When assembling the gears, they

must be orientated with the timing

marks aligned (See Figure 10).

timing

marks

Figure 10 - Gear timing

REPLACING LOAD CHAIN

Ratchet

To replace the load chain, remove the

lower hook block and chain stop from

the chain. move the directional lever to

the neutral "N" and pull the old chain

out of the hoist. Feed a length of soft

wire through one side of the chain guide

roller and over the liftwheel until it comes

out on the other side of the chain guide

roller. Attach the wire to the end of the

pawl

new chain. Position the chain so that the

first link to enter the chain guide roller

will be an upstanding link and the welds

on all upstanding links will be away from

the liftwheel. Pull on the wire until the

chain engages the liftwheel. Turn the free

chaining knob, while pulling on the wire,

until the chain comes out of the chain

guide roller. Pull the chain through and

remove the wire. on the 3/4, 1, 1 1/2, 2

and 3 Ton units attach the lower hook

block to the chain that is directly below

the upper hook. on the 6 Ton unit, reeve

the chain as shown below. Attach the

chain stop to the other end of the chain.

Chain Guide

Roller-lower

Hook Side

Stripper

Check

Washer

Raised

Stop

lower

Hook

Block

Chain installation - 3/4, 1, 1½, 2 and 3 ton

Chain Guide

Roller - end

Ring Side

Stripper

end Ring

Figure 11 - Reeving - 6 ton

Alterations or modifications of

equipment and use of any parts other

than Series 653 repair parts can lead to

dangerous operation and injury.

Do not alter or modify equipment.

Do use only Series 653 provided

replacement parts.