Haulotte H28TJ+, Книга по эксплуатации

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94 2420333140 E06.13 EN
Telescopic machines, 28 - 43 m
C
- Maintenance
3.3.3.2 - Replacing damaged of hoses
Replace hoses in the following circumstances :
• Tears in the outer casing.
• Cracks in the outer casing.
• Apparent shielding.
• Visible leak in the hose.
• Damage to the outer casing caused by chemical reaction from a foreign source.
N.B. -:-Slowly undo the hose end fitting to allow the residual hydraulic pressure to dissipate.
Tightening torque table
To protect personal safety, observe the following conditions when disassembling or reassembling
components :
• Stow and park the machine on level cleared ground(The machine should not be tilted. The boom at
horizontal position).
• Stow the machine completely.
• Place barriers around the perimeter of the work area (risk area = maximum height of the machine).
• Locate the faulty hose/s and their end connection points, to ensure proper machine operation after
intervention.
• Identify and memorise the hose path of the hose to be replaced.
Use an oil collection pan to avoid polluting the environment.
• 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.