Komatsu WA800-1 Operation & Maintenance Manual page 123

Hydraulic system
Bucket lacks lifting power.
Bucket lifting speed is slow.
l Addoil.
0 Replace filter in hydraulic tank.
Many bubbles from in oil.
l Replace with specified oil.
l Addoil.
l
Bleed air from oil line.
Oil pressure is too low.
l Add oil and bleed air
Cylinder vibrates when operating.
l Add oil.
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TROUBLE SHOOTING GUIDE
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