Service manual
Table Of Contents
Connecting rod alignment and bearings
(l)
Check the connecting rod for evidence
of
cracks,
especially cracks in the fillets
of
its small and
big
ends. Replace the rod if any cral:k
is
noted
in
the
fillets.
(2) Mount each connecting rod
in
the connecting rod
aligner and check for bend and twist
as
shown
below.
In
a twisted connecting rod, the bearing
is
not trued
to
the small end bushing. Such a rod
must
be
corrected with the
use
of
a press.
(3)
If
the connecting rod aligner
is
not available, the
rod
may
be checked
as
follows:
(a) To check the rod for bend, measure
"c" and
"2"
as
shown in the
figur~
"a."
If
the measure-
ment at "c"
is
larger than 0.05 mm per 100 mm
(0.00197 in. per 3.937 in.)
of"
2," straighten
the rod with the use
of
a press.
(b) To check the rod for twist, measure
"c"
as
shown in the figure
"b."
If
the measurement at
"C"
is
larger than 0.05 mm per 100 mm
(0.00197 in. per 3.937 in.)
of
"2,"
correct the
rod.
f
<0.05
t
100
a.
Checking the connect·
ing
rod for bend
b.
Checking the connect·
ing
rod for twist
Checking connecting rod
Checking connecting rod for bend
Checking connecting rod for twist
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