MASSEY FERGUSON MF 14 - Page 69

MASSEY.FERGUSON
TROUBLE
SHOOT'A'G
GROUP
O-SECTION
V-PART
7
Gaskets damaged
or
gasket
surfaces nicked, causing
I
Clean and smooth
gasket
surfaces. Always
use
new
oil to leak
out.
I
gaskets.
Valve guides
worn excessively, thus
passing
oil
I
Ream
verlve
guide
oversize and install 1132"
over-
into
combustion
chamber.
I
size
valve.
Cylinder
wall
worn or
glazed,
allowing oil to
pass
I
Rebole or deglaze
cylinder.
rings
into
combustion
chamber
Piston
rings
and
grooves
worn excessively.
Piston
fit
undersized.
Piston
oil control ring return holes
clogged.
Oil
passages
obstmcted.
Reinstall nerv rings
and
check
land
clearance.
Measure and replace
as necessary.
Remove oil control ring
and clean return
holes.
Clean out all oil
passages.
I.
OIL SEAL
LEAKS
Cause Remedy
Oil
seal
hardens
and
is worn.
Crankshaft
seal
contact surface is slightly scratched,
causing
seal
to wear excessively.
Crankshaft
seal contact surface is
causing
seal
to leak.
undersize
Crankshaft
bearing under
seal
is worn
excessively,
causing
crankshaft
to rvobble in
oil senl.
Seal
outside
seat in
cylinder or side
cover
is dam-
aged,
allor.ving
oil to
seep around outer
edge
of seal.
Nerv
seal
installed
rvithout correct
seal driver and
not
seating
squarely in
cavity.
New
seal
damnged
upon installation.
Bent
crankshaft,
causing seal to leak.
Oil seal
driven
too firr into
cavity.
Replarce old, hardened seal.
Use fine crocus cloth to remove
scratches.
(Use
care
when
removing seals.)
Check
crankshaft size and replace if worn
exces-
sively.
Check
crankshaft
betrrings for wear
and
replace if
necessary.
Visually check seal receptacle for
nicks and damage.
Replace PTO cylinder
cover or small cylinder cover
on
the magneto end, if necessary.
Replace rvith nerv
seal using proper tools
and
methods.
Use
proper seal protector
tools
and
methods
for in-
stalling another nerv
seal.
Check crankshaft for
straightness
and
replace if
necessary.
Remove seal
and replace with
nerv seal,
using
the
correct
driver tool
and
procedures,
J. BREATHER
PASSING
OIL
Cause
Remedy
Engine
speed
too fast.
Loose
oil
fill cap
or
girsket
damaged
or
missing.
Use tachometer
to
adjust
correct
rpm.
Insterll
nerv ring gasket
under
cirp rrnd tighten
securely.
F4-----
..-'.