Merely checking the output
voltage of the batteries is not indicative of their
ability to deliver adequate starting power. As
batteries age, their internal resistance to current
Cooling system service
Check the coolant level during shutdown periods at
the interval specified in FIGURE 1. Remove the radiator
cap after allowing the engine to cool and, if necessary,
add coolant until the level is about 3/4-inch below the
radiator cap lower sealing surface. Heavy duty diesel
engines require a balanced coolant mixture of water,
antifreeze and coolant additives. Use a coolant solution
as recommended by the engine manufacturer.
Inspect the exterior of the radiator for obstructions and
remove all dirt or foreign material with a soft brush or
cloth. Use care to avoid damaging the fins. If available,
use low pressure compressed air or a stream of water
in the opposite direction of normal air flow to clean the
radiator. Check the operation of the coolant heater by
verifying that hot coolant is being discharged from the
outlet hose.
