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6.6 Engine is too hot

A. Water temperature is too high 

3.Diesel engine is over load

5.Cooling water pipe is jam
6.Oil injection is too late
7.Burn is abnormal
8.The appearance of water tank is so dirty

10.Thermostat is broken 

Add cooling water
Add water or drain air 
Drop load
Tighten or change the belt
Check or change
Adjust the oil supply advance angle 
Check the quality of the spraying
Clean the radiator core plate of water tank
Clean scale and rust with professional 
Change the thermostat
Service or change water pump
Change 

The reason of malfunction                                        Troubleshooting

1.The cooling water is not enough in the water tank 
2.There is air resistance in the cooling water tank

4.The belt of fan is too loose and rotation speed drop

9.The scaling of cooling system is very serious

11.Malfunction pump in of water pump is deviant 
12.Water thermometer failure, reaction is wrong 

The reason of malfunction                                        Troubleshooting

B. Oil temperature is too high 
1.Oil is too much or too little
2.The radiator is too dirty
3.The quality of oil is too bad
4.Blow-by loss of piston ring is too large

5.Cooling water temperature is too high 
6.Diesel engine is over load
7.Oil temperature gauge failure

Check the oil level with oil dipstick
Clean the radiator
Use the right spec
Check cylinder, piston ring abrasion, 
retaining ring, scuffing etc
Troubleshooting from above 
Decrease load
Change

Diesel engine stop abruptly, run crankshaft first, if it is normal, check as following table, if it 
cannot run, the question is too bad, it must remove it to check

6.7 Stop abruptly

1.The fuel of fuel tank is use up
2.Oil pipe leakage, the oil road suction air
4.The solenoid valve of oil pump power
break down, cut off the fuel supply
7.Crankshaft can't running 
a. Piston scuffing 

c. Oil pump broken and can't oil pumping
d. Air valve is turn around and make piston,
cylinder jacket , cylinder head broken 

 

Add fuel
Check leakage

drain air

Change fuel filter element
Check circuit and solenoid valve

Change oil transfer pump
Change injection pump
Disconnect and check the reason
Service with professional person
Service with professional person
Service with professional person
Service with professional person

b. The pressure of oil is too low or shortage oil 

The reason of malfunction                                        Troubleshooting

6.8 It has some abnormal voice when the engine running

1.Air valve clearance is too large, have clash 
2. The clearance of piston and cylinder is too
large and slap
3.The clearance of main shaft tail and conn-
ecting rod bearing shell is too large and slap
4.The clearance of piston pin and small end 
of connecting rod is too large 

6.The clearance of crankshaft axial direction 
is too large, crankshaft scurry . 
7.Air valve bump piston 

9.Injector is too early, clash crock 
10.The parts of injector is broken

Check and adjust the clearance of air valve
Check and change the abrasion parts, 
keep the spec clearance  
Check crank journal, change crank shaft tile 

Check and change connecting rod bushing
and piston pin
Change the piston and piston ring
Change the plummer block patch

Change gear
Check and adjust the oil supply timing
Clear or change the parts of nozzle tip

8.The clearance of the gearl is too large and slap

5.The clearance of piston and annular is too large

Check the air valve clearance , with gas phase and 
the redundant clearance of cylinder compression 

Summary of Contents for KD388

Page 1: ...KD388 KD488 DIESEL...

Page 2: ...ituations which if not avoided COULD result in death or serious injury Indicates a potentially hazardous situations which if not avoided MAY result in minor or moderate injury The descriptions caption...

Page 3: ...ds for the Hot Parts Don t allow your hand and body and clothes to contact the silencer exhaust pipe and engine body during operation or immediately after stopping the engine 1 2 2 7 Never Operate the...

Page 4: ...amo combine harvester and agricultural mechanism 2 1 Frame feature 2 1 1 The screw intake pipe is adopted which makes the intake air go around the axes The mist oil grain and the compression air becom...

Page 5: ...ant pump Oil filler Speed sensor VE Fuel injection pump Oil filter Oil sump Drain oil rubber pipe Portrait view of KD388 Portrait view of KD388 Constant temperature regulator Fan blade Coolant pump Oi...

Page 6: ...se Air heater Fuel filter Inlet pipe Fuel injection pump cover board Oil sump Crankshaft Belt pulley Oil sump washer Oil sump Hose of draining oil Cylinder cover and respirator Exhaust pipe Hot water...

Page 7: ...ment of filter paper element is necessary before it is clogged Replace it by cartridge assembly Cooling fluid cycles between diesel engine and radiator dissipate diesel engine heat from radiator centr...

Page 8: ...ge of the inlet pipe to provide an easy starting of the engine and its working principle goes as following If the engine is started in a low temperature switch the current on the air heater and the el...

Page 9: ...broken Besides please check the pollution of radiator and fan High altitude high temperature and overload are much easier to result coolant temperature rising lamp lighting and engine stopping to prot...

Page 10: ...nt Oil Stock Using the Oil properly Avoiding dirt or dust falling into the oil Cleaning the Filling Jaws area while filling the Oil In order to avoid impacts of the oil character Please do not use mix...

Page 11: ...on the dipstick 3 3 5 Manually tigten the cap of the oil filler port 3 3 6 Wait for about 10 minutes after starting the engine and then stop it Check the oil level with dipstick It should be near the...

Page 12: ...operator is sick or under the influence of alcohol Poisonous exhaust gas Do not block the hose intakes windows and doors for ventilation There should be good ventilation while the engines is running...

Page 13: ...ear cannot drive the starter motor to rotate Otherwise starter motor will be damaged So once engine is started disconnect the start gear from the flywheel gear immediately 4 2 2Start the engine at low...

Page 14: ...fuel tank cut off the fuel supply the engine will stop quickly When the engine is running do not cut off the switch or make a short circuit Otherwise it will produce strong spark Abnormal electric su...

Page 15: ...ccording to the engine s use load condition fuel and lubricant s quality and other condition the time interval of the terminal check can ahead or delay Maintenance The abrasion of the intake and exhau...

Page 16: ...e disaster Be sure to provide adequate ventilation it will produce hydrogen gas during charging the hydrogen gas will be burned by any fire source Be careful of the electrolyte do not let your skin an...

Page 17: ...r cooling liquid contain the rust and scale the cooling effection will be depressed The cooling water should be replaced once a year at least Drain the cooling water and then add cleanly soft water 5...

Page 18: ...tion pump bracket adjust the injection timing by changing the angle of injection pump installation See fig If the reading is greater than 0 5mm pull the oil pump shell upside away from engine Reduce t...

Page 19: ...l off was not open 4 Fuel is incompetent 5 Air cleaner element is so dirty 6 The temperature of condition is too low 7 The filter element of fuel is jam 8 Oil supply time is untrue 9 Injection head is...

Page 20: ...The reason of malfunction Troubleshooting 6 4Engine power is not enough 6 5 Running unstable 6 Oil level is small oil supply is not enough 7 The oil of oil transfer pump is too small 8 The oil supply...

Page 21: ...f fuel tank is use up 2 Oil pipe leakage the oil road suction air 4 The solenoid valve of oil pump power break down cut off the fuel supply 7 Crankshaft can t running a Piston scuffing c Oil pump brok...

Page 22: ......

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