Hobart 9OC24S Operation Manual page 145

GENERATOR DIVISION
HOBART BROTHERS COMPANY
OPERATION, MAINTENANCE, AND OVERHAUL MANUAL, TM-240A
SELF-PROPELLED GENERATOR SET, SPEC. NO. 5381A
CAUTION: LEAVE DRAIN VALVES OPEN AND PLUGS OUT WHEN
DRAIN IN G FOR STORAGE.
G. Cleaning the Cooling System
If the corrosion resistor has been properly maintained, there should be little need
for cooling system internal cleaning . If chemical cleaning becomes necessary, re-
fer to instructions in the Cummins Operation and Maintenance Manual, located in
Chapter 8.
H. Cleaning the Radiator Core
Blow out insects and dirt from the radiator core air passages, using compressed air.
Engine overheating is often caused by bent or clogged radiator fins. When straighten-
ing bent fins, be careful not to injure the tubes or to break the bond between fins
and tubes.
NOTE: Direct the air in a reverse direction to normal air flow. Normal
flow on this installation is from the engine compartment outward.
I.
Filling the Cooling System
(1) General
The corrosion resistor element should be changed each time coolant is changed.
Before installing coolant, check and inspect the system.
(2) Inspection/Check
(a) Check system for evidence of leaks.
(b) Inspect all hoses. Install new hoses as necessary. Tighten hose clamps
as required.
(c) Check the condition of fan and water pump belts. Replace belts if
necessary.
(3) lnstal I coolant
(a) Remove radiator cap. Be sure all drain valves are closed and all drain
plugs are insta I led.
(b) Pour coolant into radiator slowly until it reaches a level approximately
1 inch be low the top of the tank. This allows for a 5% expansion of
coolant when it reaches operating temperature.
Ott 30/73
2--2
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