75
5. INTERNAL INSPECTION
a) CYLINDER
Check with suitable instruments the wear on the following:
Cylinder bore (Fig 14-A)
(Fig 14). This should not exceed 0,15 mm (.006”). Ovality
should also not exceed 0,15 mm (.006”). (See table for
piston sizes).
Flywheel side bearing (Fig 14-B)
Check oil feed holes for obstruction, max diameter of
bearing should not exceed size given in table.
Camshaft bearings (Fig 14-C)
Check oil feed holes (vertical shaft engines) and check
that bearing conform to sizes given in table.
b) CRANKCASE COVER
Check the side cover or base plate for damage or
distortion.
PTO side bearing (Fig 15)
On engines with ball bearing check the condition of the
ball race.
On other engines check the bearing diameter for wear
according to dimensions given in table.
c) CRANKSHAFT
Check crankshaft for size as in Fig 16.
Check main bearings for wear against dimensions given
in table, max should not exceed:
- Flywheel side ................................ 0,02 mm (0.0008”)
- PTO side ....................................... 0,03 mm (0.0012”)
- big end.......................................... 0,02 mm (0.0008”)
Fig. 15
Fig. 14
Fig. 16
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