Perkins New 1000 Series, Руководство по ремонту, Страница: 83 / 290

Workshop Manual, TPD 1350, issue 3 83
14
New 1000 Series
To inspect 14-3
1 When an integral pulley and damper (A) is fitted,
the assembly should be renewed if:
! The rubber insert (A1) between the hub and the
outer ring is split.
! The rubber insert is damaged by oil or solvents
! There is movement of the pulley or outer ring on
the hub.
Check the area around the holes for the damper
fasteners for cracks or wear.
Caution: Do not use excessive force to lever the
damper away from the engine.
2 Remove any paint or dirt in four positions 90° apart
on the face (A2) of the damper, above the rubber
insert. Use a lever to move the damper forward and
eliminate the crankshaft end-float. Fit a dial test
indicator on the front cover of the timing case.
Measure the alignment of the damper face at four
locations, 90° apart. The maximum permissible
difference between the maximum and minimum
figures obtained is 0,18 mm (0.007 in).
3 Remove any paint or dirt from the circumference of
the damper. Fit a dial test indicator on the front cover
of the timing case.
4 Rotate the crankshaft slowly one complete
revolution and measure for run-out on the
circumference of the damper with the dial test
indicator. The maximum permissible difference
between the maximum and minimum figures obtained
is 0,12 mm (0.005 in).
5 If the alignment or the run-out is in excess of the
permissible limit, renew the pulley.
6 A viscous damper (B1) must be renewed if there is
impact damage to the outer casing or if there is
leakage of the viscous fluid from the cover plate.
Check the area around the holes for the damper
fasteners for damage.
A
A0093
1
2
1
B
A0165
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