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00001996 (REV AC) 627NH

October 2014

ASSEMBLY INSTRUCTIONS

SWIVEL HOOK OR LUG SUSPENSION

Models E, E-2, H, H-2, R, R-2, RR, RR-2 Assemble the dead
end bolt and block through the suspension adapter as shown
in Figure 21.

Figure 21. Hook Suspension

FASTENERS

See tables 2a and 2b for recommended torque values.

Using other than CM supplied high strength suspension screws to

attach the suspension adapter to the hoist may cause the screws to

break and allow the hoist and load to fall.

TO AVOID INJURY:

Use only the CM supplied suspension screws to attach the

suspension to the hoist and hand torque these screws to the

recommended seating torque as specifi ed in tables 2a and 2b. DO

NOT apply any type of lubricant to the threads of these screws.

Lubricating the threads will reduce the effort to seat the screws

and as a result, tightening the screws to the above recommended

torque may break the screw,damage the suspension adapter, strip

the nuts and/or damage the hoist frame.

SUSPENSION BOLT SHOULD BE REPLACED ANY TIME

THE SUSPENSION IS REMOVED FROM THE HOIST

NOTE: RRS USES CHAIN BLOCK ON LOOSE END AND
CHAIN IS NOT SECURED TO THE HOIST.

LOWER HOOK BLOCK PIN

When removing or installing the lower hook pin, care must
be taken so as to prevent damaging the pin and/or hook
block. These pins are tapered groove pins and as a result,
they can only be removed in one direction. To remove the
pin, a V-Block, drift and hammer (or slow acting press) are
required. The drift should be the same diameter as the pin
(5/16” diameter (7.94mm) for Models A, A-2, AA. AA-2, B,
B-2, C. C-2, F. F-2 and 3/8” (9.52mm) diameter for Models
J, J-2. L, L-2, LL, LL-2 and (7/16" diameter (11.11mm) for
Model RRS1 and it should be placed on the small end of the
pin. The small end of the pin is the end opposite the end on
which the 3 grooves are visible. Place the hook block in the
V-Block and drive the pin out using the drift and a hammer or
slow acting press.

To re-install the pin, the parts must be arranged the same
as they were when the pin was removed. To do this, use the
small end of the pin as a gage. First check the holes in the
hook block body and determine which hole is the largest.

Place the hook body in the V-Block with the larger hole on
top. Next, check each end of the hole in the lower hook
chain block and determine which end is the largest. Place the
chain in the slot of the chain block and insert the chain block,
with the large hole on top, into the hook block body. Align the
holes in the hook block body with the hole in the chain block
and insert the small end of the pin in the hole. Push the pin in
by hand until it stops and then use a hammer or slow acting
press to drive the pin into position so that the end of the pin
is fl ush with the outside surface of the hook block body.

Use of improper lower hook chain block pin as well as improper
installation of this pin can cause the pin to break and allow the
load to fall.

TO AVOID INJURY:

Use only CM supplied, special high strength lower hook chain
block pin to attach the chain to the lower hook block and install
the pin as directed above.

REMOVAL AND INSTALLATION OF LOAD CHAIN

Improper installation (reeving) of the load chain can result in a
dropped load.

TO AVOID INJURY/DAMAGE:

• Verify use of proper size and type of hoist load chain for

specifi c hoist.

• Install load chain properly as indicated below.

NOTE: When installing load chain in Models E, H, R, RR,
E-2, H-2, R-2 and RR-2 by either of the “starter chain”
methods, two loose end connecting links (627-743) must
be used. Hoist load chain can be installed by any one of
several methods.

USE OF COMMERCIAL OR OTHER MANUFACTURER’S CHAIN AND
PARTS TO REPAIR CM HOISTS MAY CAUSE LOAD LOSS.

TO AVOID INJURY:

Use only CM supplied replacement load chain and parts. Chain
and parts may look alike, but CM chain and parts are made of
specifi c material or processed to achieve specifi c properties.

The fi rst method is recommended when replacing severely
worn load chain and requires disassembling the hoist.
Method 2 does not require hoist disassembly, where as
Method 3 requires only partial disassembly.

Method #1

Disconnect hoist from power supply.

Remove back frame cover and disengage the limit
switch guide plate from the traveling nuts, see page 23.

Detach loose end of load chain from hoist frame, see
Figure 7. Also, on single reeved models, detach the
lower hook block from the load chain. On double reeved
models E, H, R, & RR unfasten the dead end side of load
chain. On triple reeved Models RT, RRT, RT-2 and RRT-2,
detach the load chain from the lower hook block.

Continue to disassemble the hoist and inspect the
liftwheel, chain guides, motor housing and gear housing