One, the country three and country two difference
Simple and intuitive: the fuel pump is different, plus the wiring harness, EGR and some sensors. For electronic unit pump must have steady low voltage DC 12V or 24V, power equal to stop; pump structure principle is completely different from the previous; unit pump replaced without adjusting the fuel supply advance angle, but the mechanical phase; some relevant parts although there is no change in the assembly and service, but the accuracy and requirements of the different, belong to a country special parts, can not be compared with the previous two interchangeable parts, such as a fuel injector, diesel filter,.
Two, the use and maintenance of the three engine
Selection of fuel oil, lubricating oil and cooling water
Dongfanghong series of three diesel engine must be consistent with the use of GB252-2011 national standard environmental temperature index of light diesel oil; lubricating oil must be used chevron or not less than chevron standard brand lubricants, CF-4 and above oil grade diesel engine oil; when the Celsius temperature below 0 DEG C for filling antifreeze, it is recommended to use the Great Wall FD-2L coolant.
Fuel oil circuit exhaust
For the first time use, without repair or long holding time of diesel engine, before the start of the first to rule out the oil in the air, to ensure a smooth start the diesel engine; the method is: first loosen the diesel filter bleeder screw, by hand pressure pump oil, until the release of the fuel no bubbles so far, and then tighten the diesel filter bleeder bolt. After the release of high pressure fuel injection pump nozzle, pump oil pump by hand, the same gas until the fuel so far no bubble.
Start and stop of diesel engine
Start the engine should be determined before the transmission is in neutral position; to avoid downtime due to battery power consumption leads to the difficulty in starting and OEMs should be to install the battery master switch, users after the shutdown to turn off the master switch.
Engine maintenance
Oriental red country three models used by the diesel filter core, for the high filter precision of the filter, the use of inferior filter, maintenance is strictly prohibited, otherwise it will lead to the engine fuel system failure. Other key points of maintenance and the same as the two power requirements.