ISTRUZIONI ORIGINALI
TECHNICAL INFORMATION
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87-900-136-01
Pumps Major Parts
Oil change procedure
Oil change must be performed when the pump is
still warm.
,
WARNING!
Use protective gloves to avoid any injury caused
by heat.
Please refer to Figure “Oil change parts identifica-
tion“, (page 22).
Unscrew the oil filling plug (E) and the discharge
plug (G) only after having placed underneath the
pump tank a suitable container (proper size and
shape), for colleting the total amount of oil.
Once the oil in the tank has completely been dis-
charged, tighten both plugs “E” and “G” and let the
pump run for about one minute, so that the lubri-
cating/cooling line gets emptied as any oil residual
inside the pump. Then remove the plugs and dis-
charge the rest of the oil.
If the oil is polluted or if some water is in the oil,
clean the pump by letting it run at maximum va-
cuum level with about 2 liters of fresh oil for at
least 5 minutes for the MS-301 and 14 liters of
fresh oil at least 5 minutes for the MS-631.
Change again the lubricating oil.
Before filling the pump with fresh oil, replace the oil
filter. Please remember to grease the filter gasket
with fresh oil. Then screw the new oil filter.
Fill the pump with fresh oil (please see
“Recommended oil” table).
