FIGURE 4-14.. ELECTRICAL SYSTEM SCHEMATIC (WITH DIESEL ENGINE)
4-42. The radiator should be filled to one inch (2.54 cm)
below the filler neck.
4-43. The radiator core must be serviced if it becomes
clogged at any point where light cannot be seen through
the core. Blow out thoroughly with compressed air, then
steam clean if facilities are available. Apply the air or
steam to the side opposite of normal air flow. Be careful
not to bend the radiator fins. If fins are bent, straighten
4-44. The radiator cap gasket and filler neck seat must
also be checked to be sure that they are providing the
proper seal. If the rubber face of the valve is damaged, a
new cap must be installed. Always install a cap having a
7 PSI (0.53 kg/cm2) pressure rating. Always inspect the
overflow pipe for restrictions. A plugged or damaged pipe
FIGURE 4-15. CHECKING Cooling SYSTEM.
may prevent the cap from venting excess pressure.