Action 41. Alternator
Take the driving belt (1) from the al-
ternator pulley (2).
Check the easy rotation of the alternator
rotor and presence of plays in the bear -
ings.
If there are any plays or jamming of the
rotor, remove the alternator and send it
to the shop for repair.
Action 42. Adjusting the front wheel
bearings (MTZ-900/900.3/950/950.3)
• Apply the parking brake and place
the wedges in front of and behind
the rear wheels.
• Lift the front axle from the ground and
place a rest under the front axle.
• Unscrew the bolts (1) and remove the
cover (2) and gasket (3).
• Remove the cotter pin (4), nut (10), ring
(5) and external bearing (9).
• Remove the wheel hub as an as-
sembly and squeeze the internal
bearing (8), race (6) and cup (7).
• Wash all the parts in diesel fuel.
• In case of wear or damage of the
bearing and cup, replace them with
new ones.
• Reassemble all the dismantled parts
in the reverse order.
• Fill in the gap between the bearings in-
side the hub with lubricating grease to
half space.
• Tighten the nut (10) with the torque of
20 N•m (2 kgf•m). Release the nut until
the cut is aligned with the axle opening
and lock the nut.
• Fill the inner cavity of the cover (2) with
grease to half space.
• Repeat the above steps for another
wheel.
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