OPERATION & MAINTENANCE MANUAL SWDE120B-3
7.4.3 Gear Oil
※ Engine oil level should be checked for every 250 working hours, refill it if
necessary.
Note: The refilling capacity of gear oil depends on the liquid level marked by oil pointer.
7.4.4 Hydraulic System
1.Check hydraulic oil
level
2. Discharge the impurity
in hydraulic oil tank
4.Clean oil suction filter
5.Change oil suction
filter
6.Clean oil return filter
7.Change oil return filter
element
8.Change pilot oil filter
9.Change breather of
hydraulic oil tank
10. Check
hoses and
pipeline
Attention: ★ The interval time varies with different hydraulic oil used, please refer to
the oil recommendation.