Section II
512
Change 4
TM 9-2350-267-20
GENERAL
This section contains instructions on how to clean, remove and install the engine
cooling system. The engine cooling system consists of the following:
Engine Cooling System
Engine Coolant Main and Lower Tubes (Main Tube Assembly)
Surge Tank and Pressure Relief Valve
Aeration Detector
Radiator and Mounts
Radiator shroud
Inlet Thermostat and Housing Assembly
Bypass Thermostat and Housing Assembly
coolant Pump
Hoses and Tubes
The maintenance procedures are given under the following headings:
Engine Coolling System (p 5-12)
Engine Coolant Main Tube Assembly Removal (p 5-14)
Engine Coolant Lower Tube Removal (p 5-15)
Surge Tank Removal (p 5-16.2)
Surge Tank Hoses and Fittings Removal (p 5-16.5)
Radiator Shroud Removal (p 5-18)
Pressure Relief Valve and Block Mount (p 5-18.2)
Aeration Detector Removal (p 5-19)
Radiator Cleaning (p 5-20)
Radiator Replacement (p 5-21)
Radiator MountS Replacement (p 5-23)
Inlet Thermostat and Housing Assembly Removal (p 5-24)
Bypass Thermostat and Housing Assembly Removal (p 5-26)
Coolant Pump Removal (p 5-28)
HOW arid Tubes Removti (p 5-29)
ENGINE COOLING SYSTEM
Component/Function
LEGEND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Surge Tank
Radiator
Radiatm-to-surge tank hose
Engine coolant cross-over tube-to-surge tank hose
Surge tank-to-pmsum relief valve hose
Pressure relief valve assembly
Engine coolant cross-over tube
Engine coolant cross-over tube-to-radiator vent hose
Radiamr vent-to-surge tank hose
Radiator fdler cap
Inlet thermostat housing-to-radiator inlet hose
Inlet thermostat housing
Engine coolant manifold connector housing
lin~ine coolant manifold
Comector hoses (8)
Engine coolant main tube assembly
Bypass thermostat housing assembly
Engine coolant drain plug
Engine coolant pump
Engine coolant pump-to-oil cooler tube
Surge tank-to-engine coolant pump Uh./hose assembly
Bypass thermostat housing assembly-to-engine coolant main tube assembly.
tube
Radiator-to-aeration detector hose
Aeration detector
Aeration detector-to-engine coolant main tube assembly hose