KAMA KM376QC, Operation Manual

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2.5 Operation Control Device
The operation control device connected to warm-up unit, electric starter and fuel
pump solenoid valve respectively.
The electric wiring of the control device is as below figure 2-1.
The electric wiring of the starting motor is as below figure2-2.
Recommended voltage is DC 12V.
Recommended current is less than 90A.
The electric wiring of the glow plug is as below figure 2-3.
The resistance of the glow plug is 0.4~0.6Ohm.
The function and operation of the electric starting switch is as below.
The operation procedure
Of the switch is:
OFF ON START ON
Rotary 3-position switch
The key can be pulled out when the switch is on
OFF position. Meanwhile, the current is cut off at
this position.
When the switch is on ON position:
(1) the warm-up indicating lamp of glow plug will
keep light for 7~8 seconds, and then goes out
automatically.
(2) The solenoid of fuel injection pump is acted.
When the switch is on START position, release
the key and let it automatically return back to ON
position. The solenoid of fuel injection pump is
acted, however the glow plug is still unconnected.
9.2 The exhaust gas is excessive and its color is abnormal.
The cause of the fault
1. The smoke exhausted is too thick
(1) the injecting timing is improper
(2) the fuel filter is restricted
(3) the assembly in injector nozzle
doesn't work normally.
2.the exhaust gas is black smoke
(1) Fuel injector is clogged by the carbon cumu-
lated and the needle valve is blocked up
(2) The load is too large
(3) Fuel injection is too late, part of fuel
is burnt in the exhausting course
(4) The clearance is not accurate and
it's seal is not effective.
(5) The distribution of the fuel to each
cylinder isn't even
(6) The inlet pipe and air cleaner is
clogged, so the air is restricted
3. the exhaust gas is white smoke
(1) Injection pressure is too low, atomi-
zation isn't good, and there is oil leakage
(2) The temperature of the cooling water
is too low
(3) The cylinder is penetrated by water
4. The exhaust gas is blue smoke
(1) The piston ring is worn excessively or
engine oil enters into the combustion
chamber in cause of the spring of the
carbon clogged is not enough.
(2) The engine oil level is too high
(3) The installation of the air ring is
converse in up and down direction
(4) Valve seal is damaged
Elimination method
(1) Adjust the injecting timing
(2) Replace the fuel filter
(3) clean, repair
(1) Check, repair or replace
(2) Reduce the load to the specified range
a) Replace the cable or tight connection
(1) Check, regulate, repair or replace
the nozzle assembly
(2) Increase the temperature of
cooling water
(3) Check the cylinder head shim
(1) Clean or replace the piston ring
(2) Drain out the excessive engine oil
(4) Replace the valve seal
(3) Make the surface marked
with "T" toward up
(6) Remove the air cleaner and clean it
(4) Check the valve clearance and seal
surface of valve
(5) Regulate the fuel distribution of each
cylinder