pag. 48
Release 00 - 02/2008
Engine WBE 0701-WBE 0704
Service manual
9 - To check the wear in the compression rings, insert
them one at a time into the cylinder (28) by about
10-15 mm and measure the gap between the two
ends with a feeler gauge (30); the rings must be
replaced if the gap is more than 1 mm.
NOTE - If a gap of more than 0.6 mm is measu-
red with new rings it means that the cylinder is
worn beyond the acceptable limits and must
be replaced. The cylinder must be replaced
if it shows striping due to a seizure.
10 - Use a section of an old ring (31) to carefully
clean the inside of the piston (27) ring housings, en-
suring that the oil passage holes are not blocked.
11 - To check the wear in the piston ring housings,
t a new ring and measure the residual space with
a feeler gauge (32). The piston must be replaced
if it is greater than 0.15 mm in the two compression
ring housings.
12 - Use a screwdriver to remove the clamping ring
(33) and remove the gudgeon pin (34) from the
piston (27).
14. ENGINE BLOCK - Overhauling internal parts
30
31
27
32
33
34
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