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2 Maintenance Directions
2.4 When changing oil
2.4
When changing oil
2.4.1
Worm wheel and worm;
wear of teeth
To check at each oil change
Check the teeth of both the worm wheel and
worm for wear. Examine the contact surfaces and
compare the tooth profiles with the
appearance examples” on page 31
. The gear
may operate satisfactorily even when worn to
some degree.
•
Replace both worm wheel and worm at the
same time, even if only one of them is worn.
•
To avoid damaging the teeth when lifting the
bowl spindle, push the worm wheel to one
side first.
Position the spindle in correct place before
fitting the worm wheel.
When replacing the gear, always make sure that
the new worm wheel and worm have the same
number of teeth as the old ones. See chapter
Technical data in the Installation Manual for
correct number of teeth.
DANGER
Disintegration hazard
Check that gear ratio is correct for power
frequency used. If incorrect, subsequent
overspeed may result in a serious
breakdown.
NOTE
Presence of metal chips in the oil bath is an
indication that the gear is wearing
abnormally.
G
0
56
80
4
1
1.
Worm
2.
Worm wheel
G
0
20
54
1
1
Check the gear ratio (number of teeth) when replacing
the gear
Содержание AFPX 617XGV-14/74CG
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