DHOLLANDIA
SERV-US checklist DHR for preventive maintenance and repair-US en-2020-01
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10– Extras for fold-away liftgates
OK ?
Corrected
Bed extension, side steps, braces
Condition, no damage or deformation, sufficient bolts as per installation instructions, tightened
conform required torque values
180 days
Spring assembly (springs and mounting system at both ends)
Condition, no damage or deformation, fastening of locking pins, / bolts / nuts, ease and safety
of folding and unfolding
180 days
Platform opener
Condition, no damage or deformation, wear plate on aluminum flip-over point
180 days
Foldable platform (extra above pt. 9)
Alignment between platform main section and flip-over point; locking of articulation pins
180 days
11- Practical tests
OK ?
Corrected
General operation test with empty platform
Execute all movements minimum 3 times with all available control units.
Liftgate should operate smoothly and quietly through its full range of motion.
Check condition of pivot points (no excessive play).
Verify correct auto-tilt function at ground level (if applicable).
90 days
Dynamic weight test at 100% of the maximum rated lift capacity
Place the platform at rest on the ground.
Put a load equal to 100% of the maximum rated lift capacity at the center point of maximum
load.
Lift the platform. Check if lift capacity is sufficient. Check general operation and stability.
Check safe working speeds:
Lift & lower: max. 150 mm / sec
Hydraulic open and close (if applicable): max. 10° / sec
Yearly
Overload test, adjustment of pressure relief valve
Place the platform at rest on the ground.
Put a load of 100% of the maximum rated lift capacity at the centre point of maximum load.
Adjust the hydraulic pressure at the pressure relief valve so that the maximum rated lift
capacity is just reached.
Add max. 10% or max. 100 kg overload (whichever is the least) at the center point of
maximum load. Adjust the hydraulic pressure so that the platform cannot lift the maximum
rated lift ca the overload.
Refer to procedure I-SERV-G-003 in the Maintenance and Repair Manual.
(Note: pressure should never exceed 220 bar / 3190 psi)
Yearly
Hydraulic circuit general
No visible oil leaks during operation and at rest
90 days
