COOLING SYSTEM WITH VERTICAL RADIATOR AND SEPARATE SURGE TANK

COOLING SYSTEM

SYSTEMS OPERATION

(Industrial Engines)

COOLING SYSTEM WITH VERTICAL RADIATOR AND SEPARATE SURGE TANK

1. Radiator cap. 2. Radiator top tank. 3. Radiator top hose. 4. Shunt line. 5. Housing for water temperature

regulators. 6. Return to housing for water temperature regulators. 7. Cylinder heads (two). 8. Vent tube. 9.

Surge tank. 10. Inside bypass. 11. Radiator bottom tank. 12. Radiator bottom hose. 13. Water pump. 14.

Outlet line for oil cooler. 15. Oil cooler. 16. Inlet line for oil cooler. 17. Cylinder block. A. Orifices between

cylinder heads and front cover. B. Orifice in oil cooler outlet.

Water pump (13) is installed on the front face of the

inside bypass (10) to water pump (13). If the coolant is

front cover for the engine and is driven by V belts from

warm the water temperature regulators (18) will be open.

the crankshaft pulley. The inlet opening of water pump

When the water temperature regulators (18) are open

(13) is connected to radiator bottom hose (12). The outlet

they make a restriction in the inside bypass (10) and the

flow of coolant from water pump (13) goes through inside

coolant goes through radiator top hose (3) and into

passages in the front cover for the engine.

radiator top tank (2) or left side tank (2). Coolant then

goes through the core of the radiator to the radiator

bottom tank (11) or radiator right side tank (11) where it is

As the coolant goes from the water pump it divides

again sent through the cooling system.

and goes through the inside passages in the front cover

for the engine to cylinder block (17). Most of the coolant

goes through cylinder block (17) and up to cylinder heads

(7). From cylinder heads (7) the coolant goes forward

through orifices (A) to the front cover for the engine.

Part of the coolant going to the left side (as seen

from the flywheel) of cylinder block (17) goes through

orifice (B) to inlet line (16) and on to oil cooler (15) to

cool the oil for lubrication of the engine and back to the

front cover for the engine through outlet line (14).

FLOW OF COOLANT

From the front cover for the engine the coolant

3. Radiator top hose. 5. Housing (water temperature

either goes to the inlet for water pump (13) or to the

regulators).

Return to housing for water

radiator.

temperature regulators.

10. Inside bypass.

18.

Water temperature regulators (two). C. Flow with

If the coolant is cold (cool) the water temperature

warm coolant. D. Flow with cold coolant.

regulators (18) will be closed. The coolant will go through