31
(Unit: liter)
Model
Total volume (L)
Effective volume (L)
3IRH2N
5.5
1.9
3IRH8N
6.7
2.8
4IRH8N
7.4
3.4
4IRI8N
10.5
4.5
Engine oil capacity may differ from the above volume depending on an engine installed on a machine unit.
(b) Replenishing oil pan with engine oil
If the remaining engine oil level is low, fill the oil pan with the specified engine oil to the specified level
through the filler port.
[NOTICE]
The oil should not be overfilled to exceed the upper limit line. Otherwise, oil may jet out from the
breather or the engine may become faulty. If engine oil is put in an engine too much, especially, a
naturally-aspirated engine may intake engine oil in the combustion chamber during the operation, and
white smoke, oil hummer or urgent rotation may occur, because the blow-by gas is reduced in the suction
air flow.
(4) Cooling Water Inspection
Daily inspection of cooling water should be done only by sub-tank.
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.
(a) Checking cooling water volume
Check the cooling water level in the sub-tank. If the water level is close to the LOW mark, open the sub-
tank cap and replenish the sub-tank with clean soft water to the FULL mark.
Standard
The water level of the sub-tank shall be between the upper and lower limit lines.
(b) Replenishing engine with water
If the sub-tank water level is lower than the LOW mark, open the radiator cap and check the cooling water
level in the radiator. Replenish the radiator with the cooling water, if the level is low.
Check the cooling water level while the engine
is cool.
Checking when the engine is hot is dangerous.
And the water volume is expanded due to the
heat.
Daily cooling water level check and
replenishing shall be done only at the sub-tank.
Usually do not open the radiator cap to check or
replenish.
