Alfa Laval AFPX 617XGV-14/74CG, Инструкция по эксплуатации

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2 Maintenance Directions 2.4 When changing oil
Tooth appearance examples
Satisfactory teeth:
Uniform wear of contact surfaces. Surfaces are
smooth.
Good contact surfaces will form on the teeth
when the gear is subjected to only moderate load
during its running-in period.
Worn teeth:
Permissible wear is as a rule 1/3 of the thickness
of the upper part of a tooth, provided that
•
the wear is uniform over the whole of the
flank of a tooth
•
all teeth are worn in the same way.
Spalling:
Small bits of the teeth have broken off, so-called
spalling. This is generally caused by excessive
load or improper lubrication. Damage of this type
may not necessitate immediate replacement, but
careful checking at short intervals is of imperative
importance.
Pitting:
Small cavities in the teeth, so-called pitting, can
occur through excessive load or improper
lubrication. Damage of this type need not
necessitate immediate replacement, but careful
check at short intervals is of imperative
importance.
G
0
53
87
1
1
Satisfactory teeth
G
053
88
1
1
Worn teeth
G
0
5
389
1
1
Spalling
G
0
53
90
1
1
Pitting