Haulotte Group HA12CJ, Книга по эксплуатации

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94 4000360350 E12.14 USA/GB
HA12CJ - HA32CJ - -
C
- Maintenance
Tightening torque table
3.3.3.3 - Evaluation of leaks on hydraulic cylinders
These measures must be taken each time an anomaly has been detected in the hydraulic
cylinder during daily inspection and periodic maintenance checks.
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.
• 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 : the test validates correct
operation.
• If the difference between two measurements exceeds 4 cm, 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.
• After hose removal, plug the the hose ends and components the ports from which the hose was removed,
to avoid polluting the hydraulic system.
• Check the cleanliness of the hoses and hydraulic components (no metal cutting, rubber, plastic, …).
• If necessary, drain and clean the whole system (tank included).
• Tighten to the torque indicated when reassembling.
Description Torque (JIC) Torque (ORFS)
Hose 1/4" (diameter 6mm) 1,5 daN.m(11,08 lbf.ft) 2,6 daN.m(19,22 lbf.ft)
Hose 3/8" (diameter 10mm) 3,5 daN.m(25,86 lbf.ft) 4,2 daN.m(31,04 lbf.ft)
Hose 1/2" (diameter 12mm) 5 daN.m(36,95 lbf.ft) 5,7 daN.m(42,12 lbf.ft)
Hose 5/8" (diameter 16mm) 8 daN.m(59,12 lbf.ft) 8,5 daN.m(62,82 lbf.ft)
Hose 3/4" (diameter 19) 10 daN.m(73,91 lbf.ft) 12,2 daN.m(90,17 lbf.ft)
• Place the machine in its operating configuration.
• To purge the hydraulic system, operate the function/s on the machine that correspond to the hose/s that
has/have been replaced, a few times.
• Check the oil level in the hydraulic oil tank.
• Check the pressure.