8
INFORMATION ABOUT OVERHAULING
EN 106
Tab 8.6
0.025 - 0.030
Important
•
Tab. 8.6 details the dimensional values of new
components only.
•
Check that the connecting rod and crankshaft half-
bearings are coupled properly.
•
Refer to the warnings in Par. 8.4.1 for value D
decreased.
•
If the clearance value between B and C is not observed,
you are required to replace bearing R (Fig. 8.12).
Measure value
A, C, D, E and F
and confront them with those
described in
Tab.8.6
.
If the measured values do not follow those described in
Tab.8.6
,
replace connecting rod
T
.
8.5.2 Checking the gudgeon pin-pin axes are parallel
Lubricate gudgeon pin
A
and bearing
R (Fig. 8.12)
.
Insert the gudgeon pin into bearing
R
. Use a dial gauge to check
the axis parallelism of the connecting rod big end and small
end.
Parallel deviation (value V) measured at the tip of the
gudgeonpin, must be a MIN of 0,015 and MAX of 0,030 mm.
If the parallelism values do not comply with the specified
ones,replace the connecting rod with a new one.
8.
5.3
Piston rings check
Insert ring
U
into the cylinder, measure value H (distance
between the points of ring
U
).
Repeat for all the seal rings.
If the measured value H does not correspond to the values
indicated in the table (Tab. 8.7), replace the seal rings U.
Important
Fig 8.14
Fig 8.15