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Section 6. Maintaining Your Lift Truck
Forks and Lift Chain
Forks and Lift Chain
Fork Inspection
Inspect the load forks for bending and wear:
• The top surfaces of the forks should be level with each other.
• If the height dierence between the fork tips is greater than 1.5% of the blade length
(A), then the forks must be replaced.
• If the fork heel is worn by more
than 10% of the thickness (B)
of the fork blade, then the forks
must be replaced. The load
capacity of the forks is reduced
when the forks have experienced
excessive wear.
Inspect the forks for twists and bends:
• Position a 50 mm (2 in) thick block, at least 100 mm (4 in) wide and 600 mm (24 in)
long, on the blade of the fork with the 100 mm (4 in) surface against the blade.
• Position a 600 mm (24 in) square
on the top of the block and
against the shank.
• Check the fork gap at 500 mm
(20 in) above the blade. If the
gap distance is greater than 25
mm (1 in), then the forks must be
replaced.
WARNING
Do not operate a lift truck with bent, damaged, or worn forks.
Shank
Block
Square
Blade
1 in (25 mm) MAX
20 in
(500 mm)
A
B
10% of B is Maximum
Allowable Wear
1.5% of A is Maximum
Height Difference
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