MASSEY FERGUSON MF 14 - Page 49

MASSEY-FERG USON
TECUMSEH ENG'NE5-/UODEIS HHIOO
& HHI2O
GROUP O
-
SECTION V
-
PART 3
oiL
PASSAGE
SEE SPECIFICATION
SBCTION
FOR BEARING
SIZE AND
NUT
TORQUE
WNIST PIN
BEARING
SLIP FIT
THROUGH
BOLT
iNSTALL WITH
MATCH
MARK
FACING
OUT AND
\\OIL
DIPPER
AS
SHOWN
CHATIFI]R TOOTH
CRANKSHAFT GBAR
CRANKSHAFT GEAR
PRESS
FIT
POSITION WITH
CHAIVIFERED TOOTH
AWAY
FROM
COUNTERWEIGHT
USE
BEARING
SEPAITATOIi
AND
PULLBR
TO NEMOVE
TAPBITBD
BEARING
PTO
TAPBRBD
BEARING
RBSTRICTBD FIT
HEAT IN
OIL
TO
INSTALL
REMOVE
GEAR
BY PI,ACING
PULLER
JAW
IJNDER GEAR
Fis.
17
Fie.
l5
size. If the
end
gap
is less than
.010",
care-
fully remeasure
the bore for undersize
dimen-
sion and enlarge
if necessary.
5.
Only correct
piston
ring
installation
will
assure fuII
power.
Carefully note
the
ring
se-
quence
when
removing
the worn rings
from
the
piston.
(Refer
to Fig. 15 for
the
proper
se-
quence.
)
Note
especiaily
the ring expalder,
as
it may
be
found
either
behind the
second
(com-
pression)
ring
or behind
the third
(oii
control)
ring.
Although
piston
rings
are
installed
correctly,
they wiil
not
perform
unless
the
piston'
and
cylinder
are reconditioned.
Clean
a.nd
check
the ring
grooves
for
wear
as
instructed in
Step
#1.
Deglaze
the
cylinder bore
with
a
fine
abrasive
cloth.
This
wiII
aid
in the
seating
of
the rings.
When
reinstalling
the rings, note
the marks
on the first
and second rings.
These
indicate
the
top
of the
ring.
Stagger the ring
end
gaps
to
prevent
compression
loss.
Use
plenty
of
API
MS rated
oil to
lubricate
all
friction
surfaces
during
engine
reassembly.
8
CONNECTING
ROD
1.
When
reinstalling
a
used
connecting
rod,
ALWAYS use new
nuts
on the bolts.
These
are
locking
nuts
and it
is inexpensive
insurance
that the torque
will
be retained
when the
con-
necting rod
is replaced.
The
connecting
rod
must be
installed with the
match mark facing
out of the
cylinder, toward
the
PTO end of the
crankshaft
as
shown in
Fig.
16.
This will
assure the
correct
positioning
of
the
oi1
dipper.
The heads of the
through bolts
must be
seated
tight
against
the
machined shoulder
on the con-
necting rod.
Failure
to
check this may result
in
a false
torque
reading
and
prematurefailure.
NOTE:
Before
installing,
clean
tlte
connectittg
t'od beayittg surfaces
ruitlt
a
clean cloth.
Rods
are
coated
tuitlt
lead rulich
tuill
slightly
oxidize in
storage.
Tltis
oxidation
nutst
be
ye-
rnoued.
2.
It
is extremely
important
that
a
torque
of
110
inch-pounds
is
maintained.
After initial
torque, use
a
drift
and a
hammer
and
strike
the rod
bearing
cap
above
each
locknut.
This
will
seat
the
cap,
releasing
some
torque
on
the
locknuts.
Retorque Iocknuts
to 110
inch-
pounds.