20
INSTALL LOAD
CHAIN PROPERLY
ON LIFTWHEEL
!
WARNING
Improper installation (reeving) of load chain can
result in dropped load.
TO AVOID INJURY:
Properly reeve load chain per the following instructions.
USE ONLY CM LOAD CHAIN AND FACTORY
REPLACEMENT PARTS. USE OF OTHER CHAIN AND
PARTS MAY BE DANGEROUS AND VOIDS FACTORY
WARRANTY.
Star and 2-digit
year code
!
WARNING
TO AVOID INJURY
:
Use only factory supplied replacement load chain and
parts. Chain and parts may look alike, but factory
chain and parts are made of specific material or
processed to achieve specific properties.
USE OF COMMERICIAL OR OTHER MANUFACTURERS’
CHAIN AND PARTS TO REPAIR XL AIR HOISTS MAY CAUSE
LOAD LOSS
13. Install the vane spring lip into the notch at one end of
the vane and place in the rotor vane slot with the
spring facing the pushpin.
14. Place the proper end plate gasket on the body of the
dead end. If the original is damaged, replace with a
new one supplied in the service kit. If your air motor
uses O-rings, place the new O-rings in the body groove.
15. Place the dead end plate on the body.
16. Install the dead end bearing and press into place with
the bearing pusher tool from the tool kit.
17. Install the dowel pins.
18. Fully tighten the remaining bolts to 75-100 in-lbs.
19. Set the end clearance as required by model (.0060/.1524).
20. Apply a small amount of grease to the bearing seal and
nstall the drive end bearing seal by pressing it flush with
the bearing.
21. Reattach the end cap.
22. Apply a few drops of lubricant into ports and rotate the
shaft by hand for a few rotations.
REMOVAL AND REPLACEMENT OF LOAD CHAIN
Hoist load chain can be removed and installed using one
of the following methods. Method 1 is recommended if
only the load chain is replaced. Method 2 is recommended
when the entire hoist is disassembled for repair and /or
inspection.
METHOD 1
1.
Remove the chain container or remove the loose
end of the chain from the hoist frame.
2.
Using the procedures described on page 28 for cut-
ting load chain, cut a portion out of the last loose
end link to form a coupling link. The portion
removed should be centered on the weld and be 1/2
inch (13mm) long. Remove burrs from cut edges.
3.
Using the coupling link, attach the new chain to the
old chain. Carefully check the welds on the new
chain and make sure they are positioned the same
as the old chain. The new chain must enter the hoist
so that the welds are down and towards the lift
wheel. See illustration above. Failure to properly
position the chain will cause the chain to jam
between the liftwheel and chain guide.
4.
Operate the hoist in the “down” direction until
approximately 6 feet (2 M) of the new chain is hang
ing free on the dead end side.
5.
ON SINGLE REEVED UNITS, remove the hook block
from the old chain, remove the coupling link, dis-
card the old chain and attach the hook block to the
new chain. ON DOUBLE REEVED UNITS, the hoist
must be removed from the trolley before reeving
the replacement load chain. For hook suspended
units, the hook must be positioned so that the dead
end bolt can be removed. If necessary, rotate hook
approximately 45 degrees following the instructions
on page 5. Now remove the chain plate and allow it
and the dead end block spacer (652-253) to slide
down the chain. Working through the cavity in
the bottom of the hoist, hold the dead end block
while loosening the dead end bolt. Remove the
dead end block and remove the dead end pin.
Remove the coupling link, pull the old chain out of
the hook block and discard the old chain. Reeve the
new load chain as described below. After reeving,
mount the trolley on the hoist or reposition the
hook, if necessary, per installation instructions start
ing on page 4. ON TRIPLE REEVED UNITS, remove the
dead end plate from the top of the hook block.
Remove the dead end pin and remove the old chain
from the dead end plate. Remove the coupling link,
pull the old chain out of the hook block and idler
sheave housing. Reeve the new load chain as
described below.
6.
Remount the chain container or reattach the loose
end of the new chain to the hoist.
METHOD 2
1.
Completely disassemble the hoist as described on
page 26.
2.
Prior to reassembly, inspect the liftwheel, chain
guides and stripper for wear. If these parts are worn
or damaged, they could cause premature wear of
the chain. Replace worn or damaged parts.
3.
Place chain on liftwheel with welds down and
towards liftwheel as shown below. Welds must
engage the relief machined in the bottom of the
3 digit
trace code
