4-5
3. After the engine started
A. Engine preheating excavator warm up
The normal working temperature of hydraulic oil is 50
o
C~80
o
C. Operating
excavator while hydraulic oil temperature is too low (especially if hydraulic oil
temperature is lower than 20
o
C) will cause hydraulic part damaged. Please
warm up the machine before working while the hydraulic oil temperature is
lower than 20
o
C.
1) Start engine and run it with rotate speed more than 200rpm for 5 min.
2) turn the throttle control knob on middle position and run 5~10 minutes.
3) during this stage, entrench each hydraulic cylinder several times, rotate
turret and travel in short distance by low speed to warm up the hydraulic oil.
Then, start to work only after the hydraulic oil temperature above 20
o
C. If
necessary, extend or retract the bucket cylinder to the end of travel, warm
up the hydraulic oil in full loading. Be careful please, this action must be last
less than 30 seconds.
B. Check engine after started
1) Check whether all status lights are off.
2) Check whether any liquid (hydraulic oil, fuel and water) leaking.
3) Check machine’s sound, vibration, heat, smell and instruments normal or
not. If any abnormality is found, repair it immediately.
4. Engine shout down
Attention: If the engine is shut down suddenly before it cools down, the service
life of the engine will be greatly shortened. Therefore, do not shut down the
engine suddenly except in an emergency
If the engine is overheating ,do not shut it down suddenly even. Keep the
engine running in middle RPM and cooling down, then turn off.
1) Run the engine in idler speed for 5 minutes around, and cool it down.
2) Push the accelerator to the min. position, pull the parking handle back to
the end.
3) Turn the ignition key to position “OFF”, shut down the engine.
4) Take out ignition key.
5. Inspection after shutting down the engine
1) Inspect working device, chassis and platform for any liquid leaking. If any
abnormality is found, repair it immediately.
2) Refuel the tank.
3) Check engine cabin for any flammable items. Please remove any flammable
items inside the engine cabin, in case of firing accidences.
4) Get rid of mud on chassis