Big Joe CB33, Manual

Page: 53 / 170

BL-CB33-0115 - 03-01-2018 8-3
8-2.2. Three Stage Mast Free Lift Chain
1. Fully lower the lift carriage.
2. Turn off the key switch and disconnect the batter-
ies.
WARNING: Before attempting any adjustment, make
certain power is disconnected.
3. Loosen lower jam nuts, located above the mounts
of cylinder, to allow for adjustment of middle jam
nuts.
4. Break the lower jam nuts, located below the
mounts of the cylinder, free from the middle jam
nuts.
5. Take up slack in both lift chains with middle jam
nut. Strive for equal tension on both chains.
6. Align anchors so each clevis pin is parallel to the
mast.
CAUTION: At least 3 full threads must be present
below lower nut after adjustment.
7. Tighten jam nuts securely while maintaining align-
ment of clevis pins.
8. Reconnect the batteries and turn on the key-
switch.
9. Test chain by operating carriage. If slack is still
apparent, repeat above procedure.
8-2.3. Three Stage Mast Secondary Lift Chain
1. Fully lower the lift carriage.
2. Turn off the key switch and disconnect the batter-
ies.
WARNING: Before attempting any adjustment, make
certain power is disconnected.
3. Loosen jam nuts, the mount of outer mast, to
allow for adjustment of middle jam nut.
4. Break the lower jam nuts, located below the
mount of outer mast free from the middle jam
nuts.
5. Take up slack in both lift chains with middle jam
nut. Strive for equal tension on both chains.
6. Align anchors so each clevis pin is parallel to the
outer mast.
CAUTION: At least 3 full threads must be present
below lower nut after adjustment.
7. Tighten jam nuts securely while maintaining align-
ment of clevis pins.
8. Reconnect the batteries and turn on the key-
switch.
9. Test chain by operating carriage. If slack is still
apparent, repeat above procedure.
8-3. LIFT CHAIN WEAR INSPECTION.
Both lift chains should be replaced when either chain
is worn enough to increase it’s length by 3% or more.
To make this determination proceed as follows.
Using a section of chain that sees the most frequent
operation over the chain sheaves, isolate a vertical
portion under tension from the weight of carriage and
forks.
Measure the distance between pin centers on 20 verti-
cal links. If the section measures 12.88” or more, the
chain should be replaced.
New chain anchor pins should be installed when
chains are replaced. Never replace a partial section of
chain and never repair chain. Refer to paragraph
8-4.
when installing new chain.