11-44
FORK
REMOVAL • INSPECTION
Disassembly:
1. Lift the fork to approx. 20 cm from the ground
2. Place a wood block under the notched section of the
fork rail
3. Unlock the fork by lifting the fork stopper pin and shift
one fork per time to the fork carriage bottom notch
4. Slowly lower the fork for removal
Installation:
The reassembly procedure is the reverse of the
disassembly procedure.
Inspection:
Fork arm inspection must be carried out carefully by
trained personnel to detect any damage, failure,
deformation, etc., which may impair safe use
(1)Surface cracks:
The fork arm must be thoroughly examined visually or
cracks giving special attention to the heel (D) and top
(E) and bottom (F) hooks.
If necessary, the forks may be subjected to a non-
destructive crack detection process.
(2)Difference in height of fork tips:
Check the difference in height between the tips on each pair of forks; this must not be more than
3% of the thickness of the forks fitted on the fork plate
(3)Positioning lock:
check that the fork positioning lock (G) is in good working order
(4)Legibility of marking:
if the fork arm marking is not clearly readable, it must be renewed by the original fork supplier
(5)Fork wear control:
the fork arm blade and shank must be thoroughly checked for wear, paying special attention to the
area around the heel (D). The forks must be replaced when the wear has reduced the thickness by
10% compared to the original
(6)Fork mounting wear control:
the horizontal supporting surface of the top hook (E) and the contact surfaces of both hooks (E) and
(F) must be checked for wear and any damage
(7)Withdrawal of the forks from service:
any fork with defects revealed during the above controls must be withdrawn from service
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