9
The Yale load chain is grade 80 chain with the dimensions
11 x 31 mm. The CPE electric hoists are specially designed
to use this type of chain. For this reason only chains that
have been approved by the manufacturer may be used in
The load chain is to be lubricated before initial operation
and every 3 months but the latest after 200 operating hours.
Adverse working conditions, e.g. excessive dust or con-
tinued heavy duty can dictate shorter periods between
• Before the chain is lubricated it must be cleaned. Flame
cleaning is forbidden. Use only cleansing methods and
agents that do not corrode the chain material. Avoid
cleansing methods that can lead to hydrogen brittleness,
e.g. spraying or dipping chain in caustic solvents. Also avoid
surface treatments that can hide cracks and flaws or other
surface damage.
• The chain must be lubricated in a no-load condition so
that lubricant can enter between the links, e.g. by dipping in
oil.
• Motor oil of the voscosity 100, e.g. Shell Tonna T68 can
be used to lubricate the chain. For very dusty applications
Inspecting the load chain for wear
Load chains must be inspected every 3 months or the latest
after 200 operating hours (see VBG 8 § 27 or local regu-
Visually inspect the chain over its full length for defor-
mation, cracks, flaws, elongation, wear or corrosive pitting.
Link chains must be replaced when the nominal thickness
"d" on any part of the chain has been reduced by more than
10% or when the pitch "t" is elongated by more than 2%
or over 11 pitches (11 x t) by 2%. Nominal dimensions and
wear limits are shown in the following table.
Chains that do not fulfil all requirements must be replaced
Replace the load chain
1-strand design
Remove the circlip with suitable pliers. Raise the swivel
tube in the direction of the chain and tap out the chain bolt
Do not damage the chain bolt bore.
Remove the 2 screws. The chain is now free.
3. Fitting the new chain
Cut the second to last link open on the loose end of the
load chain to form a "C". Remove the last link and connect
the new chain. The new chain must be fitted so that the
welds on the standing links face towards the chain guide
and away from the load sheave. Operate the hoist in the
lowering direction to feed the chain through the hoist.
4. Fitting lower block and chain end stop
Slide the end buffers over the loose ends of the load chain
and refit bottom block and chain end stop. The chain end
stop must be fitted so that at least 1 link remains free (see
Fig. 1)
5. Before initial operation lubricate the unloaded chain and
test all hoist functions under no-load condition.
1. Remove the chain anchor bolt
The chain anchor bolt is situated on the underside of the
hoist body. With an Allen key remove the grub screw that
serves as locking device. Tap out the chain anchor bolt
with a drift from the other side.
Do not damage anchor bolt or bore.
2. Pull the load chain through the bottom block and remove
the chain end stop.
3. Fitting the new chain
Cut the second to last link open on the loose end of the
load chain to form a "C". Remove the last link and connect
the new chain. The new chain must be fitted so that the
welds on the standing links face towards the chain guide
in the housing. Operate the hoist in the lowering direction
to feed the chain through the hoist.
4. Replace chain end stop
Slide the buffer pad over the loose end of the load chain
and refit the chain end stop ensuring that at least 1 link
remains free (see Fig. 1).
5. Fitting the chain anchor bolt
Inspect the chain anchor bolt for flaws, cracks or burrs.
Enter the last link of the other load chain end into the slot in
theunderside of the hoist body . Attention: The chain must
not be twisted. Now enter the chain anchor bolt through the
side bore. Move the last link back and forth while entering
the chain anchor bolt to ensure that it is not trapped and
damaged by the anchor bolt. Secure the anchor bolt with
the grub screw.
6. Assemble the bottom block
Check the idler sheave for damage. Position the load chain
over the idler sheave ensuring that the welds on the standing
links face away. Grease the needle bearings in the bottom
block halves. Place the load hook assy in the slot provided
in one of the bottom block halves and push the complete
unit onto the idler sheave. Ensuring that the buffer pad is
situated correctly in its groove replace the second bottom
