MAINTENANCE
NARROW AISLE
52
top carriage bar. Raise the lock pin in each fork to slide the
fork on the carriage bar.
Removal
Slide a hook fork to the fork removal notch on the carriage.
Lower the fork onto blocks so that the bottom hook of the
fork moves through the fork removal notch. Lower the
carriage further so that the top hook of the fork is
disengaged from the top carriage bar. Move the carriage
away from the fork, or use a lifting device to move the fork
away from the carriage.
Installation
Move the fork and carriage so that the top hook on the fork
can engage the top carriage bar. Raise the carriage to move
the lower hook through the fork removal notch. Slide the
fork on the carriage so that both upper and lower hooks
engage the carriage. Engage the lock pin with a notch in the
top carriage bar.
Inspection of Mast, Forks and Lift Chains
WARNING
Do not try to correct fork tip alignment by bending the
forks or adding shims. Never repair damaged forks by
heating or welding. Forks are made of special steel us-
ing special procedures. Replace damaged forks.
1.
Inspect the welds on the mast and carriage for cracks.
Make sure that the nuts and bolts are tight.
2.
Inspect the channel for excessive wear in the areas of
roller contact. Check the rollers for wear or damage.
3.
Inspect the load backrest extension for cracks and
damage.
4.
Inspect the forks for cracks and wear. Check that the
fork tips are aligned within 3% of the length of the fork of
each other [40 mm (1.5 in.) for a 1220 mm (48 in.) fork].
Some applications can require closer alignment. Check
that the bottom of the fork is not worn (Item 4 in Figure 10).
5.
Replace any damaged or broken parts that are used to
keep the forks locked in position.
6.
If the lift truck is equipped with a sideshift carriage or
attachment, inspect the parts for cracks and wear.
Make sure the parts that fasten the sideshift carriage or
attachment to the carriage are in good condition.
7.
Check that the lift chains are correctly lubricated. See
the
PERIODIC MAINTENANCE
section.
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