Service and Maintenance 6.3 Cooling System Ships, electrical modules in enclosed areas, pumps Tractors, fork-lift trucks, drivable electric units. Vehicles on paved roads Checking or cleaning intervals Engine application Standard values 2000 1000 500 250 125 OH The amount of contamination in the cooling system depends on the engine application. Oil and fuel residues on the engine in- crease the risk of contamination. There- fore pay special attention to leaks if the engine is used in dusty environments. Serious contamination can occur, for ex- ample: - On construction sites where there is a high level of air-borne dust.
- In harvesting application where there are high concentrations of chaff and chopped straw in the vicinity of the machine. Because applications vary, cleaning inter- vals have to be determined from case to case. The cleaning intervals given in the table on the right can be used as a guide. 6.3.1 Cleaning Intervals © 2001 6 Checking or cleaning intervals Engine application Standard values OH 2000 Ships, electrical modules in enclosed areas, pumps 1000 Vehicles on paved roads 500 Tractors, fork-lift trucks, drivable electric units.
250 Vehicles on construction sites and unpaved roads, construction machines compressors, underground mining units 125 Agricultural machines, tractors in harvesting application