Filter
Top Products
20
Engine
Tractors,
La
wn
and
Garden
-
110
and
112
35-10
Piston,
Crankshaft
and
Flywheel
- T e
cumseh
S
M-
2059-
(Apr-
67
)
INSPECTING
CRANKSHAFT
H ,,. ,
Fig.
22-Meosuring
Cronk
Pin
Wipe
crankshaft
dry
and
check
general
co
ncli-
tion.
Clean
up
threads
on
end
of
shaft
if
neces-
sary.
If
cranksha
ft
journal
indicates
wear
beyond
specified
limits
or
if
journal
is
scored,
replace
crankshaft. Replacement
crankshafts
have
crankshaft
gear,
pin
and
bearings
assembled
to
crankshaft.
New
bearing
cups
are
also
provid
ed
and
should
be
used
when
installing
new
cr3.nk-
shaft
assembly.
CONNECTING
ROD
AND
CAP
ANALYSIS
Check
rod
and
cap
for
signs
of
bending,
crack-
ing
or
unusual
wear
patterns.
Lack
of
lubrication
or
improper
lubrication
can
cause
the
connecting
rod
and
cap
to
seize
to
the
crankshaft
and
may
even
cause
rodparticles
to
become
embedded
in
the
hardened
steel
crank-
shaft.
When
the
rod
and
cap
seize
to
the
crank-
shaft,
the
connecting
rod
and
piston
may
both
break
with
shatt
e
ring
force
causing
other
inte-
rior
damage.
When
this
happens,
inspe
ct
block
carefully
for
cr3cks
and
breakage
before
re-
building
engine.
Il
l, ,
I',
--{~
Fig.
23-
Cranksh
af
t,
Rod
and
Cap
C
ra
nkshaft
anci
connecting
rod
damag
e
can
result
from:
1.
Engine
run
low
on
oil
or
without
oil.
2.
Oil
slin
ger
broken
off
bearing:
cap.
3.
Oil
hole
in
connecting
rod
pluf!,ged
with
sludge.
4.
Oil
not
changed
rrgularly.
5.
Bearing
cap
installed
incorrectly.
Note
especia
ll
y
the
condition
of
the
rod
3nd
cap
be
a
ring
area.
E
vidf
:'
nce
of
score
marks
on
th
e
se
areas
inc\icat
e s
impurities
in
the
oil
or
en-
gine
run
without
oil.
Replace
rod
showing
scr
a
tch
mark
or
deep
scores
in
the
bearing
area.
Be
nt
rods
can
be
straightened
with
a
rod
a
ligner.
Be
sure
slinger
on
roc!
cap
is
intact-not
cracked,
bent
or
chipped.
This
is
important.
NO
T
E,'
N
ew
ro(L"
and
caps
are
available
only
as
a
matched
set
jor
seruice.
If
eiOzer
is
damaged,
both
must
be
replaced.
Measure
fit
of
rod
and
cap
to
crankshaft
bear-
ing.
Also
measure
fit
of
pist
on
pin
in
piston
and
rod.
See
"Specifications."
pa
ge
35
-18.
Litho
in
U.S.A.