Perkins Phaser Series - Page 73

CRANKSHAFT ASSEMBLY 14
To Inspect14A-01C
1 When an integral pulley and damper (A) or a
separate plate damper (B) is fitted. The assembly
should be renewed if:,
• The rubber insert (A6) or (B1) 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 (A7) or (B2) 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:
• Integral pulley and damper 0,18 mm (0.007 in).
• Separate plate damper 0,60 mm (0.024 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:
• Integral pulley and damper 0,12 mm (0.005 in).
• Separate plate damper 0,80 mm (0.032 in).
5 A viscous damper (C1) 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.
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Perkins Phaser/1000 Series, April 1995 14A.07