Vernier Caliper
measure 11 Pitches
one
Pitch
Figure 7 - Chain inspection
Weld
Wear
in
These
Areas
Figure 6 - Chain inspection
ENGLISh
7
(ENGLiSH)
P/N: BANMANUAL REV. AD
September 2014
MAINTENANCE
(CONTINUED)
CHAiN iNSPECTioN
First clean chain with a non-caustic/
nonacid type solvent and make a link by
link inspection for nicks, gouges, twisted
links, weld spatter, corrosion pits, striations
(minute parallel lines), cracks in weld areas,
wear and stretching. Chain with any one of
these defects must be replaced.
Slack the portion of the chain that normally
passes over the liftwheel. Examine the
interlink area for the point of maximum
wear (polishing). measure and record the
stock diameter at this point of the link.
Then measure stock diameter in the same
area on the link that does not pass over the
liftwheel (use the link adjacent to the chain
stop for this purpose). Compare these two
measurements. if the stock diameter of
the worn link is 0.010 inches (0.254mm),
or more, less than the stock diameter of the
unworn link, the chain must be replaced.
Also check chain for stretch using a vernier
caliper as shown in Figure 7. Select an
unused, unstretched section of chain
(usually at the loose end) and measure
and record the length over 11 chain links
(pitches). measure and record the same
length on a worn section of chain.
if the result (amount of stretch and wear) is
greater than 0.145 inch (3.7 mm), the chain
must be replaced.
use only a “Knife-Edge” caliper to
eliminate possibility of false reading by not
measuring full pitch length.
Note that worn chain can be an indication
of worn hoist components. For this reason,
the hoist’s frame, stripper, and liftwheel
should be examined for wear and replaced
as necessary when replacing worn
chain (See DiSASSEmBLY and
ASSEmBLY).
Also, the load chain is specially heat
treated and hardened and should never
be repaired.
impoRtant: Do not use replaced chain
for other purposes such as lifting or pulling.
Load chain may break suddenly without
visual deformation. For this reason, cut
replaced chain into short lengths to prevent
use after disposal.
CHAiN LuBRiCATioN
A small amount of lubricant will greatly
increase the life of load chain. Do not
allow the chain to run dry. Keep it clean
and lubricate at regular intervals with
Lubriplate® Bar and Chain oil 10-R (Fiske
Bros. Refining Co.) or equal lubricant.
Normally, weekly lubrication and cleaning
is satisfactory, but under hot and dirty
conditions, it may be necessary to clean
the chain at least once a day and lubricate
it several times between cleanings.
When lubricating the chain, apply sufficient
lubricant to obtain natural run-off and full
coverage, especially in the interlink area.
Hoist normally requires no additional
lubrication except when it has been
disassembled for cleaning or repairs.
impoRtant: Brake is designed to operate
dry. Do not use any grease or lubricant on
the braking surfaces.
When lubricating parts adjacent to the
brake, do not use an excessive amount of
lubricant which could seep onto the brake
surfaces.
When the hoist is disassembled for
cleaning or repairs, the following locations
should be lubricated with approximately 1
fl. oz. per hoist of molykote BR-2-S (Dow
Corning), molytex #2 (Texaco) or Topmoly
(Topsall) grease or equal lubricant: gears,
liftwheel bushings, exterior of pinion shaft,
surfaces of frame bushings and surface of
gear cover bushings. Be sure to thoroughly
clean the old grease from these parts
before re-lubricating.
impoRtant: To insure long life and
top performance, be sure to lubricate
the various parts of the hoist using the
lubricants specified above. if desired,
these lubricants can be purchased from
Columbus mcKinnon (See Figure 13,
page 10).
used motor oils contain known
carcinogenic materials.
to aVoid inJuRy:
Never use used motor oils as a chain
lubricant. only use Lubriplate® Bar and
Chain oil 10-R as a lubricant for the load
chain.
using any grease or lubricant on the
braking surfaces will cause brake
slippage and loss of load control which
may result in injury and/or property
damage.
to aVoid inJuRy:
Do not use any grease or lubricant on
braking surfaces. The brake is designed
to operate dry.
using other than Cm Bandit supplied
load chain may cause the chain to jam in
the hoist and/or allow the chain to break
and the load to drop.
to aVoid inJuRy:
Due to size requirements and physical
properties, use only Cm Bandit supplied
load chain in the Cm Bandit lever hoist.
For more information contact: Sievert Crane and Hoist, (708) 771-1600, [email protected], www.sievertcrane.com
