238
10. Set the boom in the completely retracted and fully
raised state, mount the oil feed cap and pressurize the
tank.
11. After replacing the oil, shift each control lever to neutral
and let the engine idle for about 2 to 3 minutes before
starting work.
CAUTION
Omitting pressurization of the hydraulic tank causes
the pump to suck air, resulting in adverse effect on the
units.
[2] REPLACING COOLANT
Replace the coolant when the engine is cold. If you remove the radiator cap with the engine at
high temperatures, there is a danger of being burnt by the heated coolant blowing out.
1. Place the machine on a level surface.
2. Turn the radiator cap (1) slowly until it comes into
contact with the stopper to relieve internal pressure
from the radiator.
3. With no pressure in the radiator, give further turning of
the radiator cap (1) until it reaches the stopper while
holding it down. Remove the radiator cap (1).
4. Place a drain pan under the drain valve (2) below the
radiator to receive the coolant (antifreeze-mixed water).
5. Open the drain valve (2) to drain the coolant. Close the
drain valve (2) upon completion of draining.
6. Place a drain pan under the drain valve (3) of the
engine block below the radiator to receive coolant
(antifreeze-mixed water).
7. Remove drain valve (3) to drain coolant. Close the drain
valve (2) upon completion of draining.
8. Supply coolant mixed of antifreeze and tap water (soft
water) to the radiator through the radiator supply port.
The radiator needs to be filled up to the supply port.
NOTES
For the mixing ratio of antifreeze and tap water (soft
water), refer to “Cleaning Inside Engine Cooling System”
above.
Содержание CC423S-1
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Страница 251: ...243 2 SPECIFICATION DIMENSIONAL DRAWING...
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