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12. Slightly depress the throttle pedal, and rotate clockwise for
another one increment to switch on diesel engine starter
motor. The engine will be started to work within 10s. Now
it is necessary to immediately release your hand to let the
starting electric lock reset.
The time for one start should not exceed 15s (the
Note:
continuous working time for the starter motor should
not exceed 15s). If the engine cannot be started
now, it is necessary to immediately release the start-
er switch and wait a little time (over 30s) and then
re start the engine again. This is jointly determined
by the characteristics of starter motor and the bat-
tery. If it cannot be started for 3 times continuously,
it is necessary to search for the causes. The engine
cannot be re-started until the faults are removed and
three minutes later.
13. The engine, after starting up, shall be warming up at the
idle speed (600—750r/min). The full load operation cannot
be started until the cooling water temperature of the engine
is 55℃and the hydraulic oil temperature is 45℃.
14. Listen to the engine at the low speed operation. Check the
gearbox for abnormal sound and normal operation.
15. Check the instrument for normal operation and each light-
ing device, indicator, horn, wiper, braking lamp for normal
operation.
Note :
Pay special attention to the indicated position for
the engine oil pressure, which should not be less
than 0.07MPa (at idle speed). If it is less than this
value, it is necessary to stop the machine to check
the engine for the faults.
16. If it is in cold weather, you should heat the hydraulic oil.
Toggle the bucket manipulating handle backwards and
hold it for 4-5 minutes. Meanwhile, increase the throttle ac-
tuation to make the bucket limit stop against the arm and
make the overflow of hydraulic oil, thus increasing the oil
temperature in a quicker way.
17. Check service braking and Parking braking systems for the
normality.
18. If there is no obstacle around the machine, it is necessary
to slowly rotate the steering wheel and observe whether
the machine has the actions for leftwards or rightwards ro-
tation.
Operation 3-7
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