MASSEY FERGUSON MF 14 - Page 73

MASSEY.FERGUSON
GROUP O-SECTION
V-PART
8
E'VG''VE OV
ERH AU
L PROCEDURES
Fig.
3
5.
Inspect
camshaft
bearing
and main
bearing. If
either bearing
is not within
limits
found
in
"Specifica-
tions," replace the
entire cylinder
cover.
Inspect
cylinder
cover for cracks, distortion
and
worn
threads.
6.
To
reassemble
and install
the cylinder
cover,
lay it
on a fat surface and
position a new
oil seal
squarely
in
the
oil seal
seat. Using
the seal
seat
tool as shown
in
Fig.4, install the seal.
Fig.
4
7. Position new
gasket
into
place. Carefully
press
sleeve
tool
(Fig.
2) to the full depth of
the
oil seal seat"
Holding tool firmly
in place, install cylinder
cover.
8.
Install mounting
bolts. Tighten
to torque
indicated
in
"specifications,"
and
remove sleeve
tool.
CAMSHAFT AND CRANKSHAFT
l.
Remove
fywheel, magneto
and
cylinder
cover.
2.
Rotate crankshaft
until
timing marks
on crankshaft
gear
and camshaft
gear
are aligned
(Fig.
5).
This
will
Printed in
U.S.A.
CAIviSHAFT
DRIVE
GEAR
Fig. 5
relieve all pressure between camshaft
lobes and
valve
lifters.
Remove
camshaft.
3. Remove self-locking nuts and
washers
that
hold
connecting rod
and
connecting
rod cap
to crankshaft;
remove connecting rod
cap. Rotate
crankshaft
and
re-
move
from
cylinder.
4.
Remove seal
from
the cylinder
assembly
with a
screwdriver, in same
manner as
bottom seal
was
re-
moved
(Fig.
3). Be careful not to
damage top main
bearing
during removal.
Reinstall
a
new
seal
after
crankshaft is positioned in cylinder.
5. Wash crankshaft and camshaft
in solvent. Blow
the solvent from all oil passages with compressed
air.
6.
Check
camshaft for
scored
or worn
bearing sur-
faces.
If
surfaces are
scored,
replace camshaft.
Check
cam
lobe nose-to-heel
diameter.
7.
Check
threaded
ends of crankshaft
for worn or
damaged
threads.
Damaged
threads can sometimes
be
redressed with
a
thread die.
Replace
crankshaft
if
threads cannot be redressed.
8. Examine crankshaft taper and
keyways. If
taper
is rusty, it indicates
a loose flywheel.
Polish
taper with
fine
emery cloth.
If
keyways are
damaged,
replace
crankshaft.
9.
Check all bearing surfaces
of crankshaft
for
scor-
ing
or
wear.
If crankshaft bearing
surfaces
or crank-
shaft
journals
are not within
tolerances listed
in
"Speci-
fications", replace
crankshaft.
10.
Check crankshaft
gear
for wear,
broken
teeth,
or
loose
mounting on crankshaft. If
gear
is
damaged,
remove from
crankshaft
with
an
arbor
press
and
re-
move
gear
pin from crankshaft.
To
replace
gear,
install
pin in hole in
shaft and
press
gear
onto
shaft
with arbor
press. Make
sure
gear
is
installed
with
timing mark
facing power take-off
end of shaft.
NOTE:
Replacement crankshafts
are supplied
uith
gear
and pin,
factorg
installed.
ll.
To
install crankshaft
and camshaft,
lubricate
bearing
surfaces of crankshaft
and
position it in
cylinder