Maeda LC1385M-8BF - Maintenance Every 4000 Hours

4-63
10.9 MAINTENANCE EVERY 4000 HOURS
Perform this maintenance in tandem with maintenance every 50/100/250/500/1000/2000 hours.
[1] CHECKING WATER PUMP
Check that there is no play in the pulley, leakage of oil or water, or clogging of the drain hole. If any
problem is found, please contact us or our sales service agency for repairs or replacement.
[2] REPLACEMENT ACCUMULATOR (FOR CONTROL CIRCUIT)
Replace the accumulator every 2 years or every 4000 hours, whenever comes sooner.
The accumulator is charged with high-pressure nitrogen gas, so mistaken operation may cause
an explosion, which will lead to serious injury or damage. When handling the accumulator,
always do as follows.
• The pressure in the hydraulic circuit cannot be completely removed. When removing the
hydraulic equipment, do not stand in the direction that the oil spurts out when carrying out the
operation. In addition, loosen the bolts slowly when carrying out the operation.
• Do not disassemble the accumulator.
• Do not bring it near flame or dispose of it in fire.
• Do not make holes in it or weld it.
• Do not hit it, roll it, or subject it to any impact.
• When disposing of the accumulator, the gas must be released. Please contact us or our sales
service agency to have this work carried out.
The accumulator is installed to the position shown in the diagram
on the right.
If operations are continued after the performance of the
accumulator has dropped, if will be impossible to release the
remaining pressure in the hydraulic circuit if there should be a
failure on the machine. Please ask us our sales service agency to
replace the accumulator.
[3] CHECKING FOR LOOSENESS OF HIGH-PRESSURE PIPING CLAMP, HARDENING OF
RUBBER
Check visually and touch by hand to check that there
is no hardening of the rubber and no loose bolts of
the 2 mounting clamps for the high-pressure piping
between the supply pump and the common rail. If
there are any problems, the parts must be replaced.
In this case, please ask us or our sales service
agency to carry out replacement.