Bison MMIB-20, Operator'S Manual

Page: 39 / 72

BEARINGS
Every 50 hours
Clean and lubricate the rotor shaft’s grease fittings
and the ones of the side shaft.
Use quality EP-2 grease based on lithium and
containing no more than 1% molybdenum disulphide
(heavy duty grease or equivalent).
If necessary, lubricate the bearings before each
working day. Remember that grease excess is also
harmful.
ARROW SHAFT
Every 8 hours
Lubricate all the grease fittings with quality EP-2
grease based on lithium and containing no more than
1% molybdenum disulphide (heavy duty grease or
equivalent).
MAINTENANCE
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