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KD 477-2 Workshop Manual_cod. ED0053029370_
1° ed
_ rev.
00
XIII
68
69
70
71
Protective cap fitting
To prevent the entrance of dust and water which could block the cylin-
der studs to the upper crankcase, insert protective caps on the studs
themselves (fig. 70).
To facilitate cap mounting, oil stud roots.
Insert on crankcase, under the rocker shaft pipes, plates for the lubri-
cation of the camshaft.
Cylinder mounting
The lower end of the cylinder is chamfered for piston ring insertion
(fig. 71).
The operation can be carried out easily by using a standard piston
ring compression tool (tool
00365R0770
).
Piston ring fitting
Fit rings onto pistons in the following order (fig. 68):
1
. Chromed compression seal ring.
2
. Torsional compression seal ring
(with internal notch turned upwards).
3
. Expander oil scraper ring.
Piston ring working position
Before mounting cylinders, rotate rings 120° opposite to each (fig. 69)
other with the ends of the 1st compression ring in line with the gudge-
on pin axis.
ENGINE ASSEMBLY
