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If the engine hasn’t been used for more than 30 days or its lubricating oil has just been replaced, it is necessary to
check the oil level for being within range of the level marks in the dipstick before starting, and prime the fuel system.
Refer to Section 4.3 Priming Fuel System for specific operation.
3.5 Engine Operation
Cautions for operation of the engine:
ƔPay frequent attention to oil pressure and coolant temperature. In case of any abnormality, stop the engine
immediately for inspection.
ƔWhen engine overheating starts to happen that is indicated by the coolant temperature alarming, reduce engine
speed or place the transmission to lower gear or take the both actions until the coolant temperature falls down into the
normal range; otherwise, find the cause and remove the fault as per Section 5 Troubleshooting Guidelines.
ƔWhen driving down a steep slope, the transmission gear and brake should be used simultaneously to control the
vehicle speed and engine speed; when driving up a steep slope, a proper gear must be chosen to prevent the vehicle
from rushing on the slope.
Caution: Over-speed running will cause serious damage to the engine.
ƔProper lubricating oil, fuel and coolant must be used for the engine when it runs in an extremely cold area.
There are significant signs before most faults of an engine occur, such as changes in performance, sound, or engine
appearance. Listening and observing will help to detect in advance or predict some problems
of the engine that will
occur later, with which the proper measures can be taken in time to eliminate such problems as can lead to a serious
engine failure.
Typical engine fault signs:
ƔEngine misfires
ƔEngine vibrates abnormally
ƔEngine sounds abnormal
ƔEngine coolant temperature and oil pressure change abruptly
ƔEngine produces black smoke
ƔEngine power output is insufficient
ƔLubricating oil consumption is too much
ƔFuel consumption is too much
ƔThere is leakage of oil, fuel or/and coolant
3.6 Engine Shutdown
3.6.1 Normal shutdown
If the engine has just worked at a high speed and heavy load for a long time, reduce its load and speed gradually and
run it at idle for 3-5 minutes before stopping it to let turbocharger speed fall considerably so as to protect the engine
and turbocharger. Turn the switch from the ON position to the OFF position and take out the electric key after the
engine has been stopped.
If the engine will not be used for a period of time (3 months at most), keep it properly. Refer to Section 6 for engine
storage.
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