Kubota D722-E4, Operator'S Manual

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OPERATING THE ENGINE 6
EN
GLISH
STOPPING THE ENGINE
A
Allow the engine to idle for 5 minutes before shutting
it off after a full load operation.
Failure to do so may lead to turbo-charger trouble.
CHECKS DURING OPERATION
While running, make the following checks to see that all
parts are working correctly.
B
Radiator Cooling water(Coolant)
To avoid personal injury or death:
A Do not remove radiator cap until
coolant temperature is well below its
boiling point. Then loosen cap
slightly to the stop position, to
relieve any pressure, before
removing cap completely.
If the coolant temperature warning lamp lights up or if
steam or coolant does not stop squirting from the radiator
overflow pipe, turn off the load and
keep the engine
idling (COOLING-DOWN) for at least 5 minutes to let it
cool down gradually. Then stop the engine and take the
following inspection and servicing.
1. Check to see if the coolant runs short or if there is any
coolant leak;
2. Check to see if there is any obstacle around the
cooling air inlet or outlet;
3. Check to see if there is any dirt or dust between
radiator fin and tube;
4. Check to see if the fan belt is too loose; and
5. Check to see if radiator water pipe is clogged.
B Oil pressure lamp
The lamp lights up to warn the operator that the engine oil
pressure has dropped below the prescribed level. If this
should happen during operation or should not go off even
after the engine is accelerated more than 1000rpm,
immediately stop the engine and check the following:
1. Engine oil level (See "ENGINE OIL" in "PERIODIC
SERVICE" section.)
B
Fuel
To avoid personal injury or death:
A
Fluid escaping from pinholes may be
invisible. Do not use hands to search
for suspected leaks; Use a piece of
cardboard or wood, instead. If
injured by escaping fluid, see a
medical doctor at once. This fluid can
produce gangrene or a severe
allergic reaction.
A
Check any leaks from fuel pipes or
fuel injection pipes. Use eye
protection when checking for leaks.
Be careful not to empty the fuel tank. Otherwise air may
enter the fuel system, requiring fuel system bleeding.
(See "FUEL" in "PERIODIC SERVICE" section.)
B Color of exhaust
While the engine is run within the rated output range:
A The color of exhaust remains colorless.
A
If the output slightly exceeds the rated level, exhaust
may become a little colored with the output level kept
constant.
A If the engine is run continuously with dark exhaust
emission, it may lead to trouble with the engine.
B
Immediately stop the engine if;
A
The engine suddenly slows down or accelerates.
A Unusual noises are suddenly heard.
A Exhaust fumes suddenly become very dark.
A The oil pressure lamp or the water temperature alarm
lamp lights up.
1. Return the speed control lever to low
idle, and run the engine under idling
conditions.
2. Set the engine stop lever to the "STOP"
position.
3. With the starter switch placed to the
"SWITCHED OFF" position, remove the
key. (Be sure to return the engine stop
lever to the "START" position to be
ready for the next start.)
(1) Speed control lever
(2) Engine stop lever (A) "IDLING"
(B) "OPERATION"
(C) "START"
(D) "STOP"
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