1523.5-0000010 OM
144
5.4.1.6 Operation 5. Check of cooling liquid level in the engine cooling system
The cooling liquid level in the engine cooling system shall be controlled by fullness of ex-
pansion tank 9 (figure 5.4.5). The cooling liquid quantity in the expansion tank shall stay at
the level of 20 to 30 mm from the expansion tank bottom to the upper edge of fixing clamp
11 of expansion tank 9. If the cooling liquid level is lower than 20 to 30 mm from the ex-
pansion tank bottom, add coolant to the expansion tank up to the upper edge of the ex-
pansion tank fixing clamp 11.
1 – water radiator; 2 – lower sealer; 3 – water radiator plug; 4 – fan casing; 5 – junction
pipe from the water radiator to the engine; 6 – bracing; 7 – drain valve; 8 – junction pipe
from the engine water pump to the water radiator; 9 – expansion tank; 10 – expansion tank
plug; 11 – expansion tank fixing clamp; 12 – steam discharging and compensating pipe.
Figure 5.4.5 – Installation of the engine cooling system elements
WARNING: THE ENGINE COOLING SYSTEM WORKS UNDER PRESSURE WHICH IS
MAINTAINED BY A VALVE LOCATED IN THE EXPANSION CHAMBER PLUG. IT IS
DANGEROUS TO REMOVE THE PLUG WHEN THE ENGINE IS HOT. IF IT IS RE-
QUIRED TO REMOVE THE WATER RADIATOR PLUG, LET THE ENGINE COOL DOWN
FIRST, COVER THE PLUG WITH DENSE TEXTURE AND TURN IT SLOWLY TO RE-
DUCE PRESSURE SMOOTHLY BEFORE REMOVING THE PLUG. AVOID BURNS BY
HOT FLUID!
