THREE-CYLINDER
WATER-COOLED
DIESEL
KM376 SERIES
PREFACE
Thank you for purchasing KAMA KM376 series three-cylinder water-cooled diesel
engine.
This manual describes safe information, operation instruction and maintenance of
KM376 series diesel engine. Be sure to read this manual carefully before
operation, for keeping your engine at the best working condition.
Keep this manual at hand for easy checking up. Contact with your agent if it
destroyed or missed.
This manual is considered a permanent part of the engine, and it must stay with
the engine if resold.
Any question or suggestion happened, contact with our After-service Dept.
Indicates a strong possibility of severe personal injury or
death if instructions are not followed.
Indicates personal injury of equipment damage will result if
instructions are not followed.
Indicates the severe personal injury will result if instructions
are not followed. To prevent you from injury, be sure to read
the safety marks and correctly operate engine.
DANGER
WARNING
CAUTION
Contents
1. Safety Information
1.1 Safety Mark
1.2 Safety Caution
2. Product Instructions
2.1 Main Specifications and Data
2.2 Specifications and Data of Key Parts
2.3 Main Adjusting Data Table
2.4 Tightening Torque of Main Bolts and Nuts
2.5 Operation Control Device
3. Preparation before Operation
3.1 Prepare the Fuel, Lubricating Oil and Cooling Water
3.2 Preparation before Starting
4. Operation Instruction
4.1 Starting
4.2 Running
4.3 Check Engine during the Running
4.4 Stop the Engine
5. Break-in Period and Trial Run
6. The Storage for a Long time
7. The Method of the Maintenance and Service
7.1 Daily Technical Maintenance
7.2 Periodically Check and Service
8. The Adjustment of the Technical Data
8.1 The Adjustment of Valve clearance
8.2 The Adjustment of the Injection Timing
8.3 The Adjustment of the Fuel Injector
8.4 The Adjustment of the Injection Pump
8.5 The Adjustment of the V Belt
Electric Wiring Diagram
(8) The grow plug
(9) The current sensor
(10) The warm-up timer
(11) The grow plug resistance
(12) The grow plug relay
(13) The water temperature sensor
(14) The battery
(1) The alternator
(2) The voltage regulator.
(3) The CHG indication lamp.
(4) The hot insulation indication lamp
(5) The Current meter (10A)
(6) The generator (15A)
(7) The starter motor
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9. The Engine Fault and the Elimination Method
9.1 Starting hard or can't start
9.2 The Exhaust Gas is Excessive and Its Color is Abnormal
9.3 Fuel Consumption is Too Large
9.4 The Power is Not Enough
9.5 The Running is Not Stable
9.6 Stopping the Engine Suddenly
9.7 The Engine Can't Stop When the solenoid is Cut Off
9.8 The Engine Temperature is Over High
9.9 Engine Oil Pressure is Abnormal
9.10 Engine Oil Consumption is Over Large
9.11 There is Abnormal Sound When Running the Engine
9.12 The Engine Oil Level rises
10. Storage
10.1 Storage
11. Appendix
The Outline of the Tilt-type engine
Electric Wiring Diagram
The outline of the tilt-position engine
NOTE: According to actral requirement, the dimension and dimension can
be deduced further.
11. APPENDIX
To the oil pump MAX. height position
The center line of the crankcase.
The center line of the engine.
Supercharger
The center of the exhaust export
The center of the inlet
To oil pipe MAX height
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1.1 Safety Marks
Be sure to read and follow the instructions on the manual and safety marks.
Operating the engine without proper training or instruction is not allowed.
CAUTION: Many accidents are resulted from false operating. For your safety,
please obey to the following instructions:
1. SAFETY INFORMATION
[]
OPERATING NOTICE
Covers important safe information. Be sure to pay special attention to and
follow it, otherwise the engine performance will decrease or the engine fault
and parts damage will result.
1.2 Safety Caution
Be sure to pay attention to the following safety cautions while running the engine:
DANGER
CAUTION: To avoid being scalded with vapor.
Do not open the radiator cap while the engine is running, otherwise the
vapor scald will result. Be sure to open the radiator cap with cloth covered it
after the engine temperature decreased, and tighten the radiator cap while
the engine is running.
DANGER
CAUTION: To provide well ventilation for the battery.
To keep the battery at well-ventilated place and far away from the fire,
otherwise hydrogen explosive will result.
10.1 Storage
10.1.1 The diesel and spare parts and tools leaved from the factory should be
wrapped in the water-proof plastic cover. The bottom bracket should be mounted
at the casing box bottom. And the casing box should closed and clenched firmly.
10.1.2 The casing box should be put the dry and ventilated room. Forbid putting it
the open air, and putting it with the chemical (such as pesticide and chemical
fertilizer).
10.1.3 The effective period of the oil seal is one year. Check the corrosion of the
diesel after one year. Store the engine after coating it with oil seal if necessary.
10. STORAGE
DANGER
CAUTION: To avoid fire resulted from improper operating.
Use the recommended grade diesel oil. Other fuels such as gasoline and
kerosene will cause engine rough running, fuel injection system fault even
the fire or explosive. Be sure to use the recommended fuel described in this
manual.
Refuel in a well-ventilated area with the engine stopped. Keep flames and
sparks away. If the fuel spilled, immediately clean up the overflowed fuel with
rag.
Keep the engine far away from gasoline, kerosene, match and other
explosive or flammable materials, otherwise will result fire.
WARNING
CAUTION: To avoid inhale the poisonous exhaust.
The exhaust contains poisonous content. Do not run the engine at poor
ventilated places, such as confined rooms, tunnels, tents and cabins. Be
sure run the engine at well-ventilated place.
WARNING
CAUTION: To avoid being caught into the moving parts.
When the engine is running, keep your hands, body and clothes away
from rotary parts such as cooling fan, V-type belt and starter axle.
CAUTION
CAUTION: To avoid touching the hot parts to prevent from scald.
Be careful not to be scaled with hot engine body when the engine just
stopped. Keep hands, body and clothes far away from muffler, exhaust pipe
and radiator etc parts.
Do not operate the engine after drinking alcoholic beverage.
9.12 The engine oil level rises
2. There is water leakage in the cylinder
head or engine body
2. Check and repair, or replace
The cause of the fault
Elimination method
1. There is water leakage at the cylinder
head gasket
1. Repalce the cylinder head gasket
Safety information about inspection and maintenance:
DANGER
CAUTION: To avoid touching the battery electrolyte.
The electrolyte contains diluted sulphuric acid, which can cause blindness
and burn if eyes or skin contacted with it. If electrolyte splash into your eyes,
flush thoroughly with water immediately and call a physician.
WARNING
CAUTION: To avoid short circuit to prevent from fire.
Do not confuse the earth terminals while checking electric system;
otherwise the fire will result from short circuit.
WARNING
CAUTION: To avoid being caught into the rotary parts.
Be sure to carry out maintenance with the engine stopped.
Do not remove the cover of rotary parts.
CAUTION
Do not rebuild product without permission.
Do not release the control the high-speed limiting screw and oil level
limiting bolt, otherwise the engine life will be shortened. Any rebuilding or
disassembling of the engine will decrease safety even cause severe
accident. If necessary, contact your local KAMA agents for replacing the
genuine parts or technical support.
9.10 Engine oil consumption is over large
6. There is oil leakage in the air valve seal
6. Replace the air valve seal
The cause of the fault
1. The engine oil viscosity is too low, and
its brand isn't proper
2. The gap between piston and cylinder
is too large, and the oil hole in the piston
circle groove is clogged.
3. The piston ring is clogged circuit groove
or the installation position of the
4. There isoil leakage in the front seal and
rear seal of the crankcase
5. The engine oil temperature and
pressure is excessive
Elimination method
1. Replace the engine oil brand
2. Clean or replace the oil hole
3. Clean, repair or replace
4. Check and replace the relative parts
5. Decrease the temperature, check and
regulate the pressure-limited valve
9.11 There is abnormal sound when running the engine
9.The oil injector assembly is snapped
9. Clean or replace the nozzle assembly
The cause of the fault
1. The gap between piston and cylinder
is too large
2. The gap between piston pin and smallend bush of connecting rod is too large
3. The gap between main bush and the
connecting rod bush is too large
4 The gap between the piston ring and
piston ring circuit groove is too large
5. The gap between pressure surface
and thrust piece is too large
6.The piston bumps into the air valve
7. The abrasion of the gears is serious,
and the gap between the gears is
excessively large. There is a clash bump
when reducing the speed suddenly
8. The timing of oil supply is too early
Elimination method
1. Replace the piston ring, piston, and
bore the cylinder if necessary.
2. Repalce the worn parts, keep the
specified gap
3. Replace main bush, connecting rod
bush, keep the radial gap specified
4. Replace the piston ring, and replace
the piston if necessary
5. Replace the thrust piece, and keep the
specified gap
6. Check the clearance height
7. Judge whether replace the gear or not
according to the abrasion degree
8. Check and regulate the timing of oil supply
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