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10- MAINTENANCE AND REPAIRS
10.1 Crank gear maintenance and lubrication
Check at least once a week the oil level using the appropriate stick.
After 50-100 hours of working it is necessary to change the pump oil with a SAE
75W90 enriched by the specific additive provided by Idromeccanica Bertolini.
The additive percentage is indicated on the package. This substitution ensures the
correct lubrication for all of the rest of the pump life.
If the pump is used in humid climates or environments, the water in the air
normally tends to condense and to mix with the pump oil, which will assume a
typical white colour. In this case it is necessary to check the oil more frequent-
ly, and in presence of water immediately change it.
In presence of water in the oil immediately check the provenience and replace the
concerned seals. Before changing oil accurately clean the crankcase and the shaft,
bearings and connecting rods.
CAUTION!: The pump operation with emulsified oil (with water, condensation etc.),
reduces the lubrication of the moving parts, causing overheating and premature fail-
ures.
Protect the environment from liquids contained in the pump.
Collect and regularly drain the residues; no residue must enter the cana-
lisation net or into the ground.
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