15.1
Preventive Maintenance
DETROIT DIESEL 53
deposits on the internal walls of the cooling system. When a thorough cleaning of the cooling system is required, it
should be reverse-flushed.
If the cooling system is protected by a coolant filter and conditioner, the filter element should be changed every 500
hours or 15,000 miles.
Item 4
Inspect all of the cooling system hoses at least once every 500 hours or 15,000 miles for signs of deterioration. Replace
the hoses if necessary.
Item 5
Inspect the exterior of the radiator core every 1,000 hours or
30,000 miles and, if necessary, clean it with a quality grease
solvent such as Oleum and dry it with compressed air. Do not
use fuel oil, kerosene or gasoline. It may be necessary to clean
the radiator more frequently if the engine is being operated in
extremely dusty or dirty areas.
Item 7
Check the prime on the raw water pump; the engine should not
Item 5
be operated with a dry pump. Prime the pump, if necessary, by
removing the pipe plug provided in the pump inlet elbow and
adding water. Reinstall the plug.
Item 7
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