chapter 7000
page 16
1,2 - 2,0 t A.C.
SERVICE MANUAL
Electric
036-0410-07
G
F
D
D
F
EE
G
1° = 17,4 mm
<= FORWARD - BACKWARD=>
General criteria
Fork arms in use must be inspected at intervals of not
more than 1000 hours, and whenever a defect or permanent
deformation is detected. If the truck is subject to intensive use,
more frequent inspections may be required.
Inspection
Fork arm inspection must be carried out carefully by trained
personnel to detect any damage, failure, deformation, etc., which
may impair safe use.
Surface cracks
The fork arm must be thoroughly examined visually for 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.
Difference in height of fork tips
Check the difference in height between the blade tips on each
pair of forks, this must not be more than 3% of blade length
with the forks fitted on the fork plate.
Positioning lock
Check that the fork positioning lock (G) is in good working
order.
Legibility of marking
If the fork arm marking is not clearly legible, it must be
renewed by the original fork supplier.
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).
When maximum wear is detected, with thickness reduced to
90% of the original, the fork arm must be replaced.
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.
Withdrawal of the forks from the service
Any fork with defects revealed during the above controls must
be withdrawn from service.
MAST GROUP TILTING SETTING
Every 500 hours
- control the tilting of the masts; the standard values (β) (α)
are the following:
α =2°30’ FORWARD = 43,7mm
β = 6° BACKWARD = 105,1 mm
The tilt angle can easily be checked using a plumb-line dropped from
the front outside edge of the top of the fixed masts and measuring the
distance between the line and the front edge at a metre from the top of
the masts.
N.B. 1 tilting degree corresponds to a 17.4 mm movement on 1 mt.
FORK INSPECTIONS
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