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2. Inspection and adjustment
2.2.6 Inspection every 1,000 hours or one year
Be sure to check the following points every 1,000 hours or one year operation, whichever comes first.
No.
(1)
Cooling water replacement
(2)
Diaphragm assy inspection
(3)
Intake/exhaust valve clearance adjustment
(4)
Fuel injection nozzle pressure inspection
(1) Cooling water replacement
Cooling water contaminated with rust or water scale reduces the cooling effect. Even when antifreeze agent
(LLC) is mixed, the cooling water gets contaminated due to deteriorated ingredients. Replace the cooling
water at least once a year. Fill the radiator and coolant recovery tank with the cooling water as following.
1)Remove the radiator cap.
2)Loosen the drain plug at the lower portion of the radi-
ator and drain the cooling water.
3)After draining the cooling water, tighten the drain
plug.
4)Fill radiator and engine with cooling water.
Refer to 3.4
before filling, check to be sure the drain plug is
closed.
bromide the radiator cap of the radiator by turning
the radiator cap counter-clockwise about 1/3 of a
turn.
c)Pour the cooling water slowly into the radiator up
to the lip of the filler port so that air bubbles do not
develop.
d)After supplying the cooling water, surely tighten
the radiator cap. To fasten the radiator cap, align
the detents on the back face of the radiator cap
with the slot of the filler port and turn clockwise
pushing it downward approx. 1/3 of a turn until
contact with each other.
e)Remove the cap of the coolant recovery tank,
supply the cooling water to the FULL mark and
fasten the cap.
f)Check the rubber hose connecting the coolant
recovery tank to the radiator. Be sure the rubber is
securely connected and there is no looseness or
damage. When the rubber hose is not water tight,
an excessive amount of cooling water will be
consumed.
Inspection Item
•Never open the radiator filler cap while the engine and radiator are still hot.
Steam and hot water will spurt out and seriously burn you. Wait until the
radiator is cooled down after the engine has stopped, wrap the filler cap with
a rag piece and turn the cap slowly to gently release the pressure inside the
radiator.
•Securely tighten the filler cap after checking the radiator. Steam can spurt
out during operation, if the cap is tightened loosely.
30
Rubber hose
Coolant
recovery tank
Drain plug
(Drain plug location depends on the machine unit)
Radiator cap
Radiator
(Option)
FULL
(Max.limit)
LOW
(Min.limit)
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