Filter
Top Products
20
Tractors,
L
aw
n
and
Garden
- 110
and
112
Engine
SM-2059-
(Apr
-67)
Piston,
Crankshaft
and
Flywheel
-
Kohler
1
5-
11
DEGLAZING
CYLINDER
BORE
Deglazing
is
not
intended
to
remove
any
appreciable
amount
of
metal
from
the
bore,
but
rather
to
clean
up
and
provide
the
proper
sur-
face.
A
propel'
bore
surface
feels
smooth
but
ha
s
a
cross-hatch
pattern
of
rnicro-scratcheswhich
can
be
seen.
This
finish
w
ill
allow
the
new
rings
to
seat
or
run-in
properly.
This
finish
also
r
e-
tains
a
small
film
of o il
to
provide
ring
'
lubri-
ca
ti
on
for
the
ring
surface
and
prevents
scoring.
Fig.
24-Dcg/azing
Cylinder
Bore
Use
a
deglazing
tool
to
break
glaze,
Figure
24.
Follow
manufacturers
recommendations.
A
200-280
grit
tool
is
ge
nerally
preferred
for
degl
az
ing. A
cross
hatch
pattem
of
apprOXimately
45
~
should
be
obtai
n
ed
while
operating
the
to
ol
ve
rtically
during
deglazing.
BORING
CYLINDER
BLOCK
If
block
is
to
be
bored
as
determined
On
page
15-7,
c
lean
and
dry
block
thoroughly.
neborinr;
can
be
done
by
machining
at
a
reliable
automu-
tive
repair
shop
or
by
el
e
ctric
drill
and
boring
tool.
See
Specia
l
Tools,
page
15-19.
Reboring
to
0.010-inch
oversize
to
accomo-
date
overSize
piston
and
rin~s
can
also
be
done
with
a
course
stone
in
the
deglazing
tool.
Figure
24,
and
finishing
w
ith
finer
grit
StOlle(S). 1;\1-
POR1ANT:
If
block
is
jif(f(ed
in
(/
dr
i
l1
press/o/"
reborinf{,
be
sure
boring
tool
alld
block
are
in
true
ali.frmnenl.
INSPECTING
CAMSHAFT
Check
camshaft
for
broken
or
c
rack
ed
gear
teeth.
Check
ope
ration
of
ACR
assembly
making
sure
all
parts
are
intact
and
operate
freely.
Check
condition
of
flywei
gh
t
springs.
If
ca
mshaft
needs
attention,
see
Gruup
20
for
camshaft
and
governor
service.
INSPE
CTING
MAIN
BEARINGS
Main
bearin
gs
turn
in
an
oil
mist
and
will
not
normally
require
replaCing.
Check
for
un-
usual
signs
of
we
ar
such
as
race
turnin
g
with
bea
ring
or
bea
rinr;
deflection
caused
by
excess
ive
eng
ine lu
gg
ing. Re
fer
to
Bearing
Analysis
below.
BEARING
ANALYSIS
The
ca
us
es
of
bearing
failure
must
be in
den
ti-
fied
and
understood
in
order
to
app
ly
th
(l
proper
corrective
measures.
Fig
.
25-Brokcn
Ra
c
es
Caused
by
Misaligned
Beurillg
D
uring
In
stollation
Bearing
's
allowed
to
cock
while
in
serting
or
preS
Sing
th
em
over
a
burr
may
cause
the
bearing
to
crack.
Always
us
e
bearing
driver
tool
and
remove
burrs
be
fore
installing
bearings.
Litho
in
U.S.A.