5 Maintenance
■
Replacement of hydraulic oil in working oil
tank
（
Replace it after 500h for initial use
）
1. Remove oil drainage bolt at bottom of oil tank
and drain out oil. After that, tighten the plug.
(hexed bolt with subtense length of 22mm)
2. Remove air filter at filling opening, check oil
level and fill in certain hydraulic working oil.
3. After oil filling, tighten plug of filling opening.
Keep the engine running at low speed, put front
and rear operation rod to “Neutral position”,
operate parking switch between
ON
←→
OFF
for
2~3 times;
keep circulating work of working part
and driving part of shovel for about 5 minutes and
then stop the engine, and make sure oil level with
oil gauge. In case of overfull or insufficient oil,
check with oil gauge and adjust it, ensuring oil
level is about 50L.
hydraulic air filter Fueling opening
Liquid level and oil temperature gauge
Drainage bolt
Important
* In case of sediment in oil tank, clean up
carefully.
* Prevent any impurities from entering oil tank.
Supplementary
：
Check oil level as per following standard because
hydraulic oil level may change with oil
temperature.
Oil level is close to the middle of oil gauge before
running (oil temperature 10
～
30 ).
℃
Oil level is above upper limit of oil gauge when
normal working (oil temperature 50
～
80 ).
℃
5.10 Maintenance every 1000 hours or one
year
■
Replacement of element of air filter
Open engine cover, remove dust shield, loosen
butterfly nuts and take out element; replace it and
then reassemble.
5.11 Check and repair once every 2000 hours
Carry out the following inspection and
maintenance every 50h, 200h, 250h, 500h and
1000h.
■
Check of DC generator and battery motor
Carry out check and maintenance of every 2000h.
Bushes are worn after 2000h, ask designated
service company to repair. Incorrect disassembly
of the machine may damage water-proofing
device. So ask special company to do so. In case
of working at night with frequent use of lamps,
check the lamps every 1000h.
5.12 Check and repair once every two years
■
Check and replace of pipes
Fuel pips or hydraulic rubber pipes are wearing
parts, even not use. Replace them after two years
or any wearing.
1. Check pipes or tighten any loosened or
damaged ring clamp often.
2. Exhaust air when replacing fuel pipe.
Important
* Prevent waste into pipes or spraying pump
during replacement. Otherwise, abnormity of
spraying pump may occur.
■
Replacement of radiator pipe
Change radiator pipe and ring clamp every two
years. In case of any expansion or stiffening or
cracks within two years, replace it immediately.
■
Replacement of cooling water
（
if long-term storage coolant is used
）
1. Open plug at bottom of radiator and drain out
cooling water.
2. Remove pipes at bottom of spare case and
drain out water in the case.
3. Fill in cooling water through filling opening of
radiator, open the plug and drain out water. Keep
draining until clean water flows out from plug cock.
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