Maintenance Section
241
Check for Equal Tension
Typical example
Lift the carriage and the mast high enough for
getting tension on lift chains. Check the chains, and
make sure the tension is the same. Lift chains are
required to check for equal tension about every
1,000 service hours or 6 months.
WARNING
Personal injury can be caused by sudden
movement of the mast and carriage.
Keep hands and feet clear of any parts that can
move.
Lift Chain Adjustment
Typical example for carriage equal tension
If the tension is not the same on both chains, take
the procedure as follows.
NOTE: If carriage height is not correct, make
adjustments by following procedures.
Carriage Chain Adjustment - STD Mast
Typical example for carriage chain of STD mast
Make sure that carriage height is correct. If correct,
adjust chain for equal tension. If not, adjust chain for
correct carriage height by adjusting anchor nuts (1).
NOTE: See the previous section, "Carriage Roller
Extrusion" in "When Required" for proper
carriage height.
1. Fully lower the carriage and tilt mast forward or
lift the carriage and put blocks under the carriage
to release the tension from the lift chains.
2. Adjust nut (1) to get proper distance from the
bottom of inner upright to the bottom of carriage
bearing.
3. Make adjustment anchor nut (1) for equal chain
tension.
4. Set the mast vertical and raise the carriage and
check equal chain tension. If not equal, repeat
the same procedure as step 1 through step 3.
5. Put LOCTITE No. 242 tread lock on the threads
of the anchor nuts (1) after the adjustment is
completed.
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