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2.6  Tightening Torque of Main Bolts and Nuts:

Cylinder cover bolt

Main bearing bolt

Connecting rod bolt

Flywheel bolt

Crankshaft pulley bolt

Other bolts: mechanical property is 8.8 grade, tightening torque N.m

Japanese

bolt TT

Joint bolt

M10

1.25

98

M12

1.5

73

M9

43

M10

1.25

32

M14

1.5

30

M6

M8

M10

M12

M14

M16

M18

M20

M8

M10

M12

M14

M16

80

5

120

5

60

5

70

5

180

10

8~12

18~26

45~60

80~100

130~150

180~210

240~270

350~400

13~16

20~28

25~32

38~45

48~55

 

Item

Value

Remark

Tightening torque

(N.m)

Thread

specification

Note: 
1. If the bolts screw into the aluminum alloy part, the tightening torque should be 
about 80% of the small value at left column.
2. If the performance rate is 5.6 grade, the tightening torque should be about 60% 
of the small value at left column.

2.7 Operation control system

2.7.1 Starting switch

th

Starting switch is a kind of 4  grade switch with heat and automatic reset function.
Insert the key into the switch hole and screw it, which enables the starting switch 

to choose the position.
OFF  If the key is staying at this position, it means that the engine is stopped, and 
the key can be released or inserted since all the current is cut off at this position.
ON   If Current goes through the meter and inspect instrument (alarm system) when 
the key is on ON position.
START Turn the key to the START position and the starter motor will start the 
engine. Release the key and it will be return to ON position automatically.
HEAT When the key is staying at this position, the current will go through the air 
heater, and the inlet air of the cylinder is heated, resulting the rising of the 
temperature. Release the key and it will return to OFF automatically.
2.7.2 Air-heater (cold starting aid device)

The air-heater is installed in the flange 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 electrical heated 
platen becomes heater and heater, resulting in the heat of the inlet air.

Turn the key to HEAT position, and the current will go through the air-heater, 

meanwhile, the heat indicating lamp is on, indicating the beginning of heating. The 
lamp will go off in about 15 seconds, indicating the finish of heating.

Turn the key clockwise quickly to the START position immediately after the lamp 

is off, and the pinion of electrical starter will jump out to joggle with the ring gear of 
flywheel, thus the engine is started.
2.7.3 STOPPING-ENGINE DEVICE

If the key is turned to OFF during normal running of the engine, the fuel shut-off 

electromagnet on the fuel injection pump will actuate to cut off the fuel supply of the 
fuel injection pump, and thus the fuel injection is stopped, resulting a quick stop of 
the engine.
2.7.4 Speeder: Mechanical centrifugal speeder /all speed governor

Control the engine speed via the speed control lever: Move the control lever 

upward to raise the speed, or downward to decrease it. 

If there is a necessary to operate the speed control lever in a remote place, a 

remote control device can be attached, and the lever can be controlled by a micro 
motor.

Never loose the high speed or low speed limit switch because the steady speed 

of the engine at its maximum and minimum state has been strictly restricted.
2.7.5 Alarm lamp
These lamps are used to monitor abnormal states during the engine running.
2.7.5.1 CHARGE ALARM LAMP
The light will be on when turn on the starting switch, it will be off when the engine is 
running properly, which means the light is off when battery is charging normally; if 
not, the battery might be abnormal, and at this moment, please check the cause of 
the abnormal charging of the engine. 

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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