Operation and Maintenance Manual SC9DF Electronically Controlled Diesel Engine for Agricultural Equipment
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of any abnormal, switch off the power supply immediately.
●The common rail fuel system produces high voltage during engine operation. Do not touch the magnetic valve or its
wires of the fuel injectors, or it will cause damage to the valves.
●Do not adjust or dismantle the ECU, common rail tube, high pressure fuel pump and fuel injectors since they are of
high precision, otherwise relevant service commitment will be invalid.
●Welding on the engine or equipment is not recommended. When welding on the engine or equipment is necessary,
cut equipment power supply before welding, disconnect electronic components from their harnesses. It is not allowed
to connect and disconnect harnesses when power is on, and use protective caps to cover their connectors to prevent
particulates and spark from entering. Do not touch the pins of the connectors with hand. The ground of the welding
device is as close to the welded location as possible to avoid welding current going through ECU or electronic
components, thus to prevent ECU or electronic components from being damaged.
●Do not plug a harness in and out without necessary. If necessary, plug it in and out when power is off.
●Do not connect the jumper starting cables or charging cables to the wiring of the electronic control system. This can
cause electrical damage to the control system.
●The belt tension and the other driven devices can only be inspected when the engine is in stop.
●Do not pry the drive belt in the pulleys with a crowbar, or this can cause damage to the reinforced fibers inside the
belts. Remove and install the belts only by hand.
●If the belt has been contaminated by oil, fuel, or other harmful liquid, make sure to replace it. Do not try to clean it.
Find out and remove the source of pollution.
●When storing and carrying the drive belt, make sure its bent diameter is not less than 25 mm.
●The surfaces of the drive belt pulleys must be smooth to prolong the belt service life. Therefore, before installing the
belt, make sure the pulley surfaces are free from roughness or burr, and the pulleys can rotate smoothly.
●The battery(s) must be replaced when its lifetime is due.
●Malfunction thermostat should be replaced in time but the use of thermostat cannot be omitted.
●Do not clean the engine by watering it directly.
●Do not let rain enter the engine from the exhaust and intake ports. Do not clean the engine when it is in operation.
Detergent or water may be introduced into the inside of the engine. When the engine is started, detergent or water
inside the engine combustion chamber can cause damage to the parts inside by its hydraulic pressure, which leads to
a serious accident.
●Do not change the application and scope of the engine without permission, or it can cause damage to the engine
and/or equipment, and personal injure. The changed engine will not get any warranty even though it is in the warranty
period.
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