Ruggerini Ry100, Repair Manual

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12.0
00497R0990 - 15-07-2000
D IE S E L
8.5 Demounting the piston
Take out the piston pin as shown in fig. 6.
Warning: Warning:
Warning: Warning:
Warning: do not demount the head when hot or the retention
surfaces could be damaged.
8
7
5
6
8.6 Demounting and remounting the main bearings
Use tool code 365.90 and plug code 366.22 (fig. 7) to
demount the main bearings from the engine casing and cover
on the timing system side.
To fit the main bearing back into the engine casing, use tool
code 365.90 with plug code 366.22 and sleeve code 366.23
side A (fig. 8).
To mount the main bearing on the cover on the timing system
side, use tool code 365.90 with plug code 366.22 and sleeve
code 366.23 side B (fig. 8).
During the assembly operations, make sure that the bearing
holes match the oil ducts by making reference marks with a
felt-tip pen.
Make sure that the reference mark on the bearing edge points
towards:
- the casing interior
- the outer part of the timing system cover.
WARNING
Proceed with the following inspections after assembly:
Cover on timing system side Cover on timing system side Cover on timing system side Cover on timing system side Cover on timing system side
The main bearing must project 1.7 to 2 mm
1.7 to 2 mm 1.7 to 2 mm 1.7 to 2 mm 1.7 to 2 mm in relation to the
bearing surface of the bull ring (inner side of cover).
Engine casing Engine casing
Engine casing Engine casing
Engine casing
The main bearing must be flush with the bearing surface of
the shimming ring (inner side of casing).
8.4 Removing the cover on the timing system side
Slacken off the screws around the perimeter of the cover on
the timing system side. Split the cover from the engine casing
by levering with a screwdriver in the points indicated in fig. 5.
Warning: Warning: Warning: Warning: Warning: to prevent damage to the main bearings, it is
advisable to demount the cover from the timing system side
with the engine cold.
Main bearing Main bearing Main bearing Main bearing Main bearing
3 6 5 . 9 0 3 6 5 . 9 0 3 6 5 . 9 0 3 6 5 . 9 0 3 6 5 . 9 0
3 6 6 . 2 2 3 6 6 . 2 2
3 6 6 . 2 2 3 6 6 . 2 2
3 6 6 . 2 2
Main bearing Main bearing Main bearing Main bearing Main bearing
3 6 6 . 2 3 3 6 6 . 2 3 3 6 6 . 2 3 3 6 6 . 2 3 3 6 6 . 2 3
3 6 6 . 2 2 3 6 6 . 2 2
3 6 6 . 2 2 3 6 6 . 2 2 3 6 6 . 2 2
3 6 5 . 9 0 3 6 5 . 9 0
3 6 5 . 9 0 3 6 5 . 9 0 3 6 5 . 9 0