18
5.2 MAINTENANCE
Inspection Items
Check Points and Remedy
1.
Bolts, Nuts, Snap-Ring, etc
-
Looseness, damage, missing
à
Tighten, replace
2.
Cylinder-Rod
-
Damage on the surface of cylinder rod.
à
Surface finishing or replace
3.
Center-Joint
-
Oil leakage, or bolt looseness
à
Replace seals, tighten the bolts
4.
Cutter
-
Damage, gap more than 1mm due to
wear, breakage, and or bolt looseness
à
Replace or tighten the bolts
5.
Pins, Bush
-
Gap more than 1mm due to heavy wear or
breakage
à
Replace
6.
Rotation motor-malfunction
-
Problem of motor, pinion or bearing,
à
Adjust brake valve pressure, Replace
7.
Grease
-
Grease every 4~8 working hours
(Slew-ring, Pins, Gear)
8.
Damage on the structure
-
Check crack, breakage, damage
à
Repair
9.
Oil leakage
-
Check piping and seals
à
Tighten, Replace seals
10.
Pressure setting
-
Check main relief pressure
à
Adjust relief valve(280~300 bar)
-
Check setting pressure of motor brake
valve and flow rate
à
Adjust pressure(140-~210 bar) and
flow rate(10~40 lpm)
11.
Fluid contamination
-
Check fluid(oil) contamination regularly
à
Replace oil and filter
