70
Check the bolts of the travel motor and undercarriage, and the bolts of travel
motor and sprocket.
Check these bolts regularly to make sure
of their tightness.
Bolts :M16 (10.9) Force moment: 280-330
N·M.
Washing tracks
Check the undercarriage after working.
Warning: do not switch on the excavator if big stones are stuffed tight between the
tracks. These big stones may damage the machine. In winter, do not stop the machine outside
to avoid freezing the tracks.
Danger: put a wood block under the propped machine body.
Check the screwing moment of the bolts
Check the following bolts and their moments regularly.
The bolts of balance weight
NO.1 bolt M36, moment:2000
N·
M
The bolts of the swing circle
NO.2 bolt M20, moment:620
N·
M
The bolts of the swing motor and reducer
NO.3 bolt M16, moment:310
N·
M
Hydraulic system
The maintenance of the hydraulic system is mainly pointing hydraulic tank.. Special
maintenance is not necessary for the other elements .but the hydraulic pipeline should be
checked more often.
It is very important for the inside of hydraulic system to keep clear, so should change the
scavenge oil filter element regularly. Clear hydraulic radiator, change hydraulic medium as
been required.
Danger: forbidding touching hydraulic medium and the components directly.
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