Sunbeam ALPINE I SERIES: APLINE II SERIES, Workshop Manual

Page: 75 / 413

WSM.124
Section B (Engine)
Fig. 40. Honing connecting rod little end bush
Fig. 41.
Honing piston bosses
2nd
re-issue
Page 37
Fig. 42. Checking connecting rod alignment
PISTON RINGS
Top Compression Ring
This piston ring is chromium plated with the word
"Vacrom" etched on one of its side faces. It may
be titted either way up and is Cargraph treated to
assist bedding In. This treatment leaves It a dull
grey and faintly red colour.
Second Compression Ring (See Fig. 43)
To provide more rapid running in and also to assist
In oil control, a stepped periphery compression ring
Is titted in the second groove from the top of both
standard and oversize pistons. It is most Important
that this ring is correctly titted with the step down­
wards, that Is, with the widest face toward the top
of the piston. This face is marked "TOP" to indicate
THIS SIDE TO PISTON CROWN
Fig. 43. Correct method of fitting second
compression
ring