Haulotte Group HT21RT O, Книга по эксплуатации

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82 4000511390 E03.16 USA / GB
General data
Cylinder inspection
MS0003
3 - Control and maintenance
3.1 - VISUAL INSPECTIONS
The hydraulic actuating cylinders must be subjected to visual inspections periodic all the 250 hours or 6 months such
as defined below :
• Absence of leakage.
• Absence of deformations, visible damage , cracks on the body and fixing of the cylinder.
• Absence of rust and shock on the rod.
• Absence of foreign body on all surfaces.
• Absence of missing or loosened part (bolt, nut, connection, flexible device, etc).
3.2 - FUNCTIONAL TESTS
To guarantee an optimal level of performance and safety, functional tests must be realized all the 250 hours or 6
months.
The periodicity can evolve under the following conditions :
• Anomaly noted during visual inspection.
• Abnormal noise during movements of the structure.
• Prolonged storage of the machine ( 6 months).
• Specific storage and use Environment (strong moisture and salinity of the air).
Generic Control :
• Position a load equal to the rated capacity on the cage (or platform).
• Raise the cage (or the platform) using the ground control box. To activate the cylinder to be tested, proceed
as follows :
• Lift Arm hydraulic cylinder : Lift the arm to approximately half full height. The telescopic boom should be fully
extended and in the horizontal position. (For machines fitted with).
• Boom lifting cylinder or Jib cylinder : Lift the concerned equipment (boom or jib) of approximately half way. Extend
the telescope to its maximum.
• Telescoping cylinder : Lift the boom to its maximum angle and telescope approximately 50 cm (19.69 in).
• Measure the distance between the floor of the cage (or of the platform) and the ground.
• Leave the machine in this condition for 15 mn (minutes).
• Measure the distance between the floor of the cage (or of the platform) and the ground.
• If the difference between two measurements does not exceed 4 cm (1.575 in) : the test validates correct operation.
• If the difference between two measurements exceeds 4 cm (1.575 in), contact HAULOTTE Services® or carry out
the additional tests described below.
Control cylinder by cylinder :
• Position a load equal to the rated capacity on the cage (or platform).
• Perform the movement of the concern cylinder to half of its stroke.
• Fix the cylinder with a comparator :
• Attach the body of the comparator on the cylinder rod.