WARNING
Do not try to lift a fork without a lifting device. On some
trucks, the forks can weigh up to 180 kg (400 lb) each.
Hook Forks - Slide a hook fork to the fork removal notch
on the carriage. Lower the fork onto blocks so that the bot-
tom 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.
Inspect
WARNING
DO NOT try to correct fork tip alignment by bending the
forks or adding shims. Replace bent forks. Never repair
damaged forks by heating or welding. Forks are made
of special steel using special procedures. Replace
damaged forks. Forks are to be replaced only in sets
and not individually.
1. Inspect forks for cracks and wear. Check that fork tips
are aligned as shown in Figure 16. Check that bottom of
fork is not worn (ite4, Figure 16).
CAUTION
Remove fork latch pins if adding a fork positioner
attachment. Damage to forks and other carriage com-
ponents can occur if fork latch pins are not removed
prior to using attachment.
2. Replace any damaged or broken parts that are used to
keep forks locked in position.
3. Inspect fork wear. Ensure heel wear is not more than
10% of original thickness. If fork wear is nore than 10%,
fork must be replaced or rerated. Perform fork wear inspec-
tion using a BOL256N1 caliper ruler Yale P/N 550088603
as follows: See Figure 17.
a. Determine normal thickness of "N" of fork using scale
or ruler portion of caliper ruler. Measurement has to be
don on fork shank using caliper ruler.
Maintenance
66
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