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MASSEY FERGUSON MF 14 User manual

SERVICE MANUAL
MF 14 TRACTOR WITH MOWER
This manual may be placed in the Special Products Service Manual Form No. 1448 981 M1 or in the
Technical Maintenance Manual under Group Xl.
MF
Garden
Tractor Talk
Digitally signed by Garden
Tractor Talk
DN: cn=Garden Tractor Talk,
o=GTtalk.com, ou,
[email protected], c=US
Date: 2011.12.03 11:29:34 -05'00'
O
a
a
a
SAFETY PRECAUTIONS
When working around tractor or mower, make sure engine is shut off and key is removed from the
ignition switch.
Be careful when working around a hot engine.
Never work on electrical components unless the battery cables are disconnected.
When performing hydraulic checks, be careful not to injure yourself on the transmission cooling fan.
Be sure transmission gear shift lever is in the neutral position when performing hydraulic pressure
checks.
Do not make any adjustments with the engine running unless absolutely necessary.
Look for this symbol to point out important safety pre-
cautions. lt means - ATTENTION! BECOME ALERT!
YOUR SAFETY IS INVOLVED.
INDEX
PAGE
ENG I NE '1
Specifications
Removal
lnstallation
Complete Disassembly
Servicing of lndividual and Reassembly
Components
Fuel System
1
1
1
2
4
6
lgnition System
TRANSMISSION AND REAR AXLE
STEERING AND FRONT AXLE
8
9
16
20
21
HYDRAULIC SYSTEM
MOWER AND MOWER DRIVE (lncludes lmplement Drive Clutch)
-t-
ENGINE
SPECIFICATIONS
CylinderBore.....
obs;i dl6"
lt\-^^l-^L^tt h^l r.rJU\) -.UZU
Crankshaft Rod Journal Size
^_^-,--:_ .....1.5000"-1.4995"
crankpin Rod side crearance " " r'evvv -r'aiTvir
r\-^-r-^:_ r --_rL v'vs'|q"ve " .007"-.016"
Crankpin Length
Connecting Rod to plqnt<q1n Running Clearance
Connecting Rod to Wrist Fin Clearaice
lA, !-r ^.
WristPinto Piston Boss. ........O""f
Piston to Cylinder Bore (Thrust Face)
n:^r-- a^ A- r, :: ::':;
Piston Pin Bore Size .
n:^r^ -
piston pinDiameter... ......::.....::...:.":6;,,
l:lg :iqg clearance (Ig.p_qno Middte Rinss)
Ring End Gap .
n^-^L :::::
Valve Stem Clearance (lntake) :::::
Valve Guide in Block (lnterferen'ce) . .
Valve Seat in Block (lnterference) . .
Valve Clearance, lntake (Cold) : : :dYi, _:6lU
yiiY: :::l tlslP : " 44 u"
:x;;
Valve Seat Wid[h .037"_.045"
The following procedures are for disassembly and reassembly of the complete engine. For detailed
information regarding any component, refer to the ifpropriate nba,:ing *iffin ,,servicing of lndividual
Components" portion of this Manual.
REMOVAL 4. Disconnect starter cabte.
5. Disconnect coil wire, electric clutch
Refer to Figs. 1 and 2.
1. Remove hood and griile as an assembry. wire, f uel line, choke cable and throttle cable.
6. Remove 4 bolts securing engine to frame
2. Remove screen from flywheel and dis- and remove engine.
connect drive shaft. INSTALLATION
3. Disconnect wires from regulator rectifier P.osition .engine on frame and secure
and disconnect blue wire from thetonnect;;. - with retaining bolts.
Fig. 1 - Right-Hand Side of Engine Fig. 2 - Left-Hand Side of Engine
-'1-
2. Connect coil wire, electric clutch wire,
fuel line, choke cable and throttle cable to left
side of engine.
3. Connect starter cable and reconnect
wires to regulator rectifier.
4. Connect drive shaft and screen to fly-
wheel.
5. lnstall hood and grille assembly.
D ISASSEM BLY
1. Remove air cleaner and carburetor.
2. Remove starter, rotating screen and air
baff les.
3. Use a suitable puller and remove fly-
wheel. The use of a puller is recommended,
bumping end of crankshaft could cause damage.
4. Remove valve cover and breather.
5. Remove cylinder head.
6. Compress valve springs with a suitable
spring compressor and remove keepers. Re-
move valves and springs.
7. Remove oil base and remove connecting
rod cap.
8. Clean carbon and/or ridge from top of
cylinder wall and remove piston and rod from
cylinder block.
9. Turn engine upside down on bench.
10. Remove bearing plate with oil seal and
bearing from flywheel side of engine. lt may be
necessary to use a puller.
11. Remove retaining ring and remove bot-
tom balance gear and shim washers. Note num-
ber and location of shim washers for ease of
installation.
12. Carefully bump crankshaft on pTO end
and remove from cylinder block.
13. Remove retaining ring and remove top
balance gear and shim washers.
14. Remove the camshaft pin by driving on
end of pin opposite flywheel side. After the pin
has been driven approximately 1/2", it can be
withdrawn by hand. Note location and amount of
shims at end of camshaft for ease of installa-
tion. 15. Remove camshaft and valve lifters.
16. Remove governor arm f rom governor
shaft.
17. Unscrew governor shaft bushing nut
and remove shaft from inside of cylinder block.
'18. Remove long screw from cylinder block
and slide governor gear off stub shaft.
REASSEM BLY
1. lnspect main bearings. lf they turn easily
and noiselessly and show no evidence of scoring
on the races, there is no reason for removal. lf
the bearings are damaged, remove old bearings
and press a new one in the cylinder block and
one in the bearing plate.
2. Turn engine upside down, place thrust
washer on stub shaft and slide governor gear
into place. Secure in place with long screw
through side of block. Screw prevents governor
from sliding off during reassembly.
3. lnstall governor shaft from inside of cyl-
inder block and secure with bushing nut. Shaft
must not bind or have excessive end-play. End
clearance can be corrected by bumping bushing
in or out of cylinder block.
4. lnsert tappets into their bores. The tap-
pets are i nterchangeable.
5. Start camshaft pin into cylinder block
(from flywheel side) and through camshaft. See
Fig.3. Tap lightly on pin until it just starts into
bore at opposite end. Check end-play of cam-
shaft with a feeler gauge. Remove the pin and
add enough shim washers (opposite gear end)
to obtain .005"-.01 0" end-play.
6. Slip one .010" spacer on stub shaft and
install top balance gear on shaft (with timing
marks out). Do not install the bottom gear at this
time. lnstall another .010" spacer with one .020"
spacer and secure with retainer ring next to
thickest spacer. Proper gear end-play is .005"-
010", remove or add spacers to obtain.
t^
Fig. 3 - lnstalling Camshaft
-2-
7. Press crankshaft into block, align pri-
mary timing mark on balance gear with standard
timing mark on crankshaft. See Fig. 4. Press
shaft until gears are meshed approximately
1/16" then rotate crankshaft until timing marks
on cam gear align with mark on crank gear.
Continue to press crankshaft into cylinder block.
8. Rotate crankshaft until it is approximate-
ly 15' past B.D.C. then place a .010" spacer on
stub shaft and start the bottom balance gear on
shaft. Align secondary mark on gear with secon-
dary mark on crankshaft, then install gear all
the way on shaft. See Fig. 5. The secondary
timing mark on the gear will align with standard
mark on crank when gear is in place, if properly
timed. lnstall spacers with thickest one toward
retaining ring and check end-play of gear. Add
or subtract shims to obtain .005"-.010" end-play.
Fig. 5 - Installing Boltom Balance Gear
L lnstall bearing plate using one .020" and
one .010" thick gasket onto crankshaft and se-
cure to engine block with retaining capscrews.
Tighten capscrews evenly to avoid distortion
to bearing plate. Check crankshaft end-play by
measuring between inner race of bearing and
shoulder on crankshaft. Correct crankshaft end-
play is .003"-.020" and is controlled by gasket
thickness on bearing plate.
10. Use a suitable ring compressor and in-
stall piston and connecting rod. Be sure mark on
connecting rod is toward flywheel side of engine
as shown in Fig. 6. lnstall rod cap with mark
the same way. Tighten retaining bolts to 300
in.-lbs. torque.
1 1 . lnstall oil base.
12. lnstall valves, springs and retainers
and adjust tappets. Adjust exhaust tappets .017"-
.019" and intake .008"-.010" cold.
13. lnstall cylinder head and torque bolts to
360 in.-lbs. torque following sequence shown in
Fig.7.
14. Carefully install oil seals on crankshaft.
15. lnstall crankcase breather with new
gaskets in the number sequence shown in Fig. 8.
@@ @
@@
@@@-
Fig. 7 - Head Bolt Tightening Sequence
1. Stud Bolt
2. Gasket
3. Breather Plale
4. Reed
5. Ballle
6. Seal
7. Filter
8. Gaskel
9. Cover
PRIMARV
TIMt!{G
Fig. 4 - Crankshaft and Top Balance Gear Properly Timed
SECONDARY
TlMlI,IG
$ARK
MARKS ?OWARD
F],wTNEL
Fig. 6 - Connecting Rod Properly lnstalled
gECONDARY
TIMINC I.IARR
(cRAl{l{5HAF? )
SECO!II]ARY
TIMIIiIG MARK
(SATANCC CEAR}
^{!--;
dqs
N
q--{,u1
m\fi)o
\\Fc:
Fig. 8 - Grankcase Breather
-3-
16. lnstall flywheel with square key, wave
washer and nut. lnsert a bar between flywheel
fins and tighten retaining nut to 60 ft.-lbs. torque.
17. lnstall push rod and breaker points. Set
point gap to .020". This is an initial setting.
18. Place air shroud plate over carburetor
opening as shown in Fig. 9, and install carbure-
tor. 19. Connect governor arm to carburetor
linkage and adjust governor linkage.
20. lnstall air shrouds and rotating screen.
CYLINDER HEAD
Cooling fins are provided to aid in cooling.
Blocked fins often cause "hot spots" which can
result in a blown head gasket. lf gasket fails
around one of the head bolts, high temperature
can burn away portions of the aluminum alloy
head. lf no evidence of burning is found, check
head for flatness. A slightly warped head can be
surfaced by using a piece of sandpaper placed
on a flat surface. Carefully clean carbon de-
posits by using a putty knife being careful not to
scratch gasket surface.
To remove and install cylinder head proceed
as follows:
1. Remove cylinder head air baffle.
2. Remove head bolts and carefully re-
move head.
3. Clean head and check for flatness.
4. Use a new gasket and reinstall head and
air baffle. Tighten head bolts in sequence and
evenly to 360 in.-lbs. torque. See Fig. 7.
CYLINDER BLOCK
lnspect cylinder block as follows:
1. Check all gasket surfaces to make sure
they are free of gaskets, sealing material and
free of deep scratches or nicks.
2. Check cylinder bore for excessive wear,
taper or out of round. lf the cylinder taper does
not exceed .005", or .004" out of round, de-
glaze cylinder walls and install a service ring kit.
NOTE: lf gauges are not available for check-
ing cylinder wear, a simple and quite ac-
curate method is as follows:
1. Use top of piston and push a piston ring
to bottom of cylinder bore.
2. Measure ring end gap.
3. Move the same ring to top of ring travel
in cylinder bore and again measure ring
SERVICING OF INDIVIDUAL COMPONENTS
end gap.
4. Take the diflerence between the two
measurements and divide by 3. This is
approximately the cylinder taper.
For Example: With bottom ring gap ol .014"
and .035" top gap, the diflerence is .021".
Divide .021" by 3, the result is .007". This
represents the approximate cylinder taper.
3. lf cylinder bore is excessively worn, it
can be rebored to .010"-.020" or .030" oversize.
Reboring to one of these sizes will allow usage of
oversize piston and ring assemblies.
PISTON, RINGS AND ROD
Production type and service type rings are
available in standard, .010", .020" and .030"
oversize. Production type is used only when cyl-
inder is not worn while service type is used when
cylinder is worn but within wear limits (.005"
taper - .004" out of round). Cylinder bore must
be deglazed when service rings are used. To in-
stall new rings, proceed as follows:
1. Remove piston and rod and remove rings
from piston.
2. Clean ring grooves.
3. Place each ring in cylinder bore and
check end clearance. Ring end gap should be
.010"-.020".
4. lnstall rings on piston according to mark-
ings on the ring. lf a groove or bevel is on the
inside of the ring, it must be toward the top of
piston. When a groove is on the outside of the
ring, it must face down on piston.
5. Use a ring compressor and install piston
and rings into cylinder bore.
Connecting rods are available in .002" un-
dersize to be used where the crankshaft has a
slight wear. Rods are also available in .010" and
.020" undersize for use with reground cranks.
-4-
Fig. 9 - Plate lnstalled Prior to lnstalling Carburetor
lnstall connecting rod in engine with notch
on rod and cap toward flywheel side of engine
as shown in Fig. 6. Tighten retaining bolts to 300
in.-lbs. torque.
CRANKSHAFT AND BALANCE GEARS
Two balance gears are driven off the crank-
shaft gear in the direction opposite to crankshaft
rotation. The two gears run on needle bearings
on stub shafts.
When the crankshaft is reinstalled, care
must be exercised to make sure that the gears
are properly timed to the crankshaft. See Figs.
10and'11.
Fig. 10 - Engine Balance System Components
.003" to .020" end-play of crankshaft.
CAMSHAFT
The camshaft contains an automatic com-
pression release which raises the exhaust valve
slightly during cranking and aids in starting. Fly-
weight action disengages this release after a
speed of 650 rpm is reached. The camshaft ro-
tates on a pin which is held securely in the
engine block. Shims must be used to obtain an
end-play of .005"-.01 0".
VALVES, SEATS, SPRINGS AND
GU IDES
To replace valve guide, drive down and
carefully break off protruding end until guide can
be removed. Press new guide into block until
upper end of guide is 1-15/32" from top of cyl-
inder block.
Check rotator caps to be sure they will ro-
tate before installing valves and retainers.
Valve seat inserts are available for both
valves. When servicing the valve seats the seat-
ing surfaces should be held as close as possible
to 1/32" wide. The seats should never be more
than 1/16" wide. Both seats should be ground
to a 45' angle. After the valves and seats are
refaced, they should be lapped in with a fine
grade of valve grinding compound. After valves
are installed, adjust tappet clearance to - in-
take .008"-.010" and exhaust .01 7"-.019".
GOVERNOR
The governor is a mechanical type with
centrifugal flyweights and is mounted within the
crankcase and driven off the camshaft gear.
Engine governed speed is variable as de-
termined by the throttle control lever.
Before servicing the governor gear assem-
bly, the crankshaft, balance gears and camshaft
will have to be removed. Governor linkage is
adjusted at the factory and further adjustment
should not be necessary unless the linkage has
been disturbed. Readjustment may be indicated
if engine speed surges with change of load or if
speed drops considerably when a load is applied.
To adjust governor linkage, stop engine,
ref er to Fig. 12, and proceed as follows:
'1. Loosen clamp nut holding governor arm
to cross shaft.
2. Rotate cross shaft counterclockwise as
far as possible.
3. Pull governor arm all the way away from
carburetor and retighten clamp nut.
Normal location of spring is third hole in
governor arm and second hole in control arm as
shown in Fig. 12. Also refer to Fig. 9.
Fig. 11 - Timing Marks Used lor lnstallation
The crankshaft and gear are of one piece.
lf gear is worn or damaged the crankshaft should
be replaced. lf crankpin is slightly scored it can
be cleaned up by using crocus cloth soaked in
oil, then use a .002" undersize rod. lf scored
more than .002" it should be reground to .0.10"
or .020" or replaced.
BEARING PLATE
The bearing plate contains one crankshaft
bearing and oil seal. lt is retained to the cylinder
block with 4 capscrews and is sealed with shim
gaskets. The gaskets control crankshaft end-
play. Remove or add shim gaskets to obtain
PRIMARY
TIMING MARK
(BALANCE GEAR)
STANDARD
TIMING MARK
(CRANKST]AFT )
SECONDARY
TIMING MARK
(BALANCE GEAR) SECONDARY
TIMING MARK
(cRANKSHAFT)
tr
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HIGH SPESD
MlX?UR8
SCREW
Fig. 13 - Carburetor Adjustment Screws
Fig. 12 - Adjusling Governor Linkage
Maximum power and efficiency are possible
only with proper carburetion. lmproper carbure-
tor adjustments can cause overheating, spark
plug fouling, excessive valve wear and lack of
power. lf any of these problems occur, check
carburetor for adjustments and overhaul if nec-
essary.
CARBU RETOR ADJUSTM ENTS
Refer to Fig. 13.
1. Stop engine and carefully turn both fuel
mixture adjustment screws in until they bottom
(do not force).
2. Turn high speed mixture screw out 2
turns and turn idle mixture screw out 1-1/4
turns. This is an initial setting.
3. With engine running at full throttle, (do
not exceed 3600 rpm), adjust high speed mix-
ture screw in until engine starts to slow down.
Then turn screw out slowly until engine regains
full speed. lf adjusted properly, engine should
acCelerate smoothly and operate at a steady
governor speed. lf it doesn't, open adjustment
screw slightly.
NOTE: lf necessary, adjust throltle control
linkage to obtain 3600 rpm.
4. Operate engine at about 1000 rpm and
turn idle mixture screw in until engine slows
down (runs rough) then open screw until engine
runs smooth.
NOTE: ll these adjustments do not correct
the carburetion problem, the carburetor
should be removed and overhauled.
CARBU RETOR D ISASSEM BLY
1. Remove carburetor from engine and
wash clean in solvent.
2. Remove retaining nut, gasket and bowl.
3. Remove float pin, float, needle and
needle seat.
4. Remove idle mixture screw and high
speed mixture screw.
5. Remove high speed mixture screw seat.
NOTE: ll choke, throttle plates or shalts
are worn, replace the complete carburetor.
lnspect all parts for wear or damage, re-
place as required. Clean all parts in an alcohol
or acetone solvent and blow out with compressed
air.
FUEL SYSTEM
-6-
CARBURETOR REASSEMBLY
See Fig. 14.
1. lnstall needle seat with gasket. lnstall
needle, float and float pin.
2. lnvert carburetor and adjust float level,
by bending tang on float, until an 11/64" drill
bit just fits between float and gasket surface on
carburetor, as shown in Fig. 15.
3. Remove float and needle and install high
speed needle screw seat.
4. lnstall new bowl gaskets, needle and
f loat.5. lnstall bowl and secure with retaining
nut and gasket.
6. lnstall high speed mixture screw. Turn
in until needle contacts seat then turn out 2
tu rns.
7. lnstall idle mixture screw. Turn in until
needle contacts seat then turn out 1-1/4 turns.
B. lnstall carburetor on engine and adjust
as outlined under the heading "Carburetor Ad-
justments".
Fig. 14 - Carburetor - ldentification ol Parls
FUEL PUMP
The fuel pump operates off a cam on the
camshaft. A lever transmits action to a dia-
phragm within the pump body.
Fig. 15 - Ghecking Float Level
DISASSEMBLY AND REASSEM BLY
Refer to Fig. 16.
'1. Remove fuel lines and mounting screws
holding pump to engine.
2. With a file, make an indicating mark
across a point at the union of fuel pump body
and cover. This is a positive marking to assure
proper reassembly. Remove assembly screws
and remove cover.
3. Turn cover over and remove valve plate
screw and washer. Remove valve retainer,
valves, valve springs and valve gaskel, noting
their position. Discard valve springs, valves and
valve retainer gasket.
4. Clean fuel head thoroughly with solvent
and a fine wire brush.
5. Holding pump cover with diaphragm
surface up, place new valve gasket into the
cavity. Now assemble the valve spring and valves
into the cavity and reassemble valve retainer and
lock in position by inserting and tightening fuel
pump valve retainer screw.
6. Place pump cover assembly in a clean
place and rebuild the lower diaphragm section.
7. Holding mounting bracket, press down
on the diaphragm to compress spring under it,
then turn bracket 90" to unhook diaphragm so it
can be removed.
B. Clean mounting bracket with a solvent
and a fine wire brush.
9. Replace the diaphragm operating spring,
stand new spring in casting, position diaphragm
and press down on diaphragm to compress
spring and turn 90'to reconnect diaphragm.
10. Hold mounting bracket, then place the
pump cover on it (make sure that indicating
marks are in line) and insert the four screws.
DO NOT TIGHTEN. With the hand on the mount-
ing bracket only, push the pump lever to the limit
of its travel and hold in this position while tighten-
ing the four screws. This is important to prevent
stretching the diaphragm.
11. Mount the fuel pump on engine, using
the new mounting gaskets. Connect the fuel
lines.
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Fig. 16 - Fuel Pump - ldenlilication of Parts Fig. 17 - lgnilion Timing Using A Gontinuity Light
1. Screw 5. Spring
2. Pump Cover 6, Valve Relainer
3. Gasket 7. Screw
4. Valve 8. Oiaphragm
9. Spring
10. Gasket
11. Pump Body
IGNITION SYSTEM
When checking the ignition system, start
with the components that require most frequent
servicing. Hard starting, low power and erratic
operation are often caused by faulty ignition.
Spark plug, ignition coil, points and condenser
must be in good condition and the spark must
occur at the proper time to maintain good per-
formance. A simple test will help determine if
the ignition is at fault.
QUICK IGNITION CHECK
Remove high tension wire from spark plug.
Turn engine in direction of rotation while holding
wire approximately 1/8" away from cylinder
block. lf a sharp, snappy spark jumps this dis-
tance, you may assume the ignition system is
functioning satisfactorily. Try a new spark plug.
lf spark does not occur, check the ignition com-
ponents and wiring.
BREAKER POINTS AND CONDENSER
Point condition and adjustment of gap will
affect engine operation. lf the points are burned
or badly oxidized, little or no current will flow
through the ignition system. Breaker point gap
will also affect ignition timing.
To install points proceed as follows:
1. Be sure push rod is in place and secure
points in place with retaining screws. Replace
condenser when points are replaced.
2. Connect wire to points and rotate fly-
wheel until points fully open.
3. Adjust point gap to .020".
4. Attach continuity test light to breaker
point wire and to ground as shown in Fig. 17.
5. Rotate engine slowly in direction of ro-
tation until light just goes out. At this point, S
mark on flywheel should align with mark on
bearing plate. lf the marks do not align readjust
points. Point gap will vary from .019"-.022".
IGNITION COIL
The ignition coil requires very litile servicing
except being kept clean and all terminals tight.
The coil must be hooked up properly. The
negative (-) coil terminal must be connected
to the breaker points.
IGNITION TIMING
The engine has a hole in the flywheel hous-
ing so that the timing marks can be observed.
Two timing marks are stamped on the flywheel
- the f mark indicates T.D.C. and the S mark
indicates the spark point which is 20. B.T.D.C.
-8-
I-
Two methods can be used for timing. One
method is static timing; the other is with a timing
light.
STATIC TIMING METHOD
1. Disconnect spark plug wire to prevent
engine starting and remove breaker point cover.
2. Rotate engine slowly in direction of nor-
mal rotation and observe timing marks and the
points. The points should just start to break as
the S mark on the flywheel aligns with the mark
on bearing plate. lf marks do not align readjust
point gap- The point gap will vary from .01g"-
.022" . This can be determined as follows:
a. With a thin piece of cellophane be-
tween the points, which can be removed as
TRANSMISSION
REMOVAL
The rear axle and transmission should be
removed from the tractor as an assembly. To
remove proceed as follows:
1. Remove seat and fenders as an assem-
blv. 2. Remove dress panels over drive shaft
and fan.
3. Disconnect light wires.
4. Disconnect brake rod at rear.
5. Disconnect transmission control rod at
front end.
6. Remove bolts from each side of tractor
as indicated by arrows in Figs. 18 and 19.
7. Raise tractor frame and roll transmission
and rear axle out.
INSTALLATION
1. Raise tractor frame and roll transmis-
sion and rear axle into place.
2. lnstall bolts at each side of the tractor.
3. Connect brake and transmission control
rods.4. Connect light wires.
5. lnstall dress panels over drive shaft and
install seat and fenders.
TRANSM ISSION DISASSEM BLY
Two different versions of the charging pump
are used in the transmission. The se'rvi6e pro-
cedures of the transmission are basically'the
same except the charging pump area. One type
is a plain casting bore for the iump shaft beir-
ing and the other has a ball bearing in the cast-
ing. See Fig. 20.
the points just start to open.
b. Connect a continuity test light to the
point wire and to ground, as shown in Fig. 17.
Rotate engine slowly in the direction of rota-
tion until light just goes out. At this point S
mark on flywheel should align with mark on
bearing plate.
TIMING LIGHT METHOD
1. Hook up timing light in accordance with
manufacturer's recommendation.
2. Chalk mark S mark on flywheel.
3. Start engine and aim timing light at hole
in flywheel cover. Timing marks should align
when light flashes. Adjust points to change tim-
ing.
AND REAR AXLE
Fig. 20 - Charging Pump Housings
Fig. 18 - Right-Hand Side of Tractor
Fig. 19 - Left-Hand Side ol Tractor
-9-
Before any servicing is done to the trans-
mission it is suggested that a pressure check
be made as follows:
1. Remove covers over drive shaft.
2. Remove plug at top of transmission pump
housi ng.
3. lnstall a 1000 psi gauge as shown in Fig.
Fig.21 - Checking Charging Pump Pressure
4. Start engine and observe reading on
gauge.
. 5. The reading on gauge should be 70-150
pst. 6. lf the pressure is not within this range,
check pump charge relief valve located at right-
hand side of pump housing.
7. Shims are used to regulate pressure -
add shims to increase pressure, remove to de-
crease.
Before disassembling the transmission,
check and mark charging pump housing and
motor housing positions. These two housings are
directional according to pump shaft rotation.
Fig. 22 shows a view of the charging pump
housing correctly positioned.
lf the motor housing is accidentally re-
versed, the tractor will go forward when the
Hydra-Speed Lever is in the reverse position or
back up when in forward position.
1. Separate transmission and rear axle
assembly.
2. Refer to Fig. 22 and remove bolts secur-
ing the charging pump housing and remove the
housing.
3. Remove gerotor assembly and drive pin
as shown in Fig. 23.
4. Remove the implement relief valve spring
and shims from upper left side of the pump
housing. See Fig. 24.
5. Remove the charge relief valve spring
and shims from the upper right side of the pump
housing. See Fig. 25.
c!llrEli
StcTltla MO?OR
aofsrNe
ctlrR{]1NC
l:r".ti4F
rlous1tlc Fig.22 - Fronl View of Transmission
.@b
Y
t\-.-"-/
TP
Fig. 23 - Charging Pump Disassembled
Fig.24 - lmplement Reliel Valve Removed
d\::;l:'
\\ '$
]!1(]TOR C}:NTCR PUMP
IIOUSJNG SECTICN HOUSlNG
Fig. 25 - Charge Reliel Valve Removed
-10-
6. Remove bolts securing motor housing
and pump housing together and separate the
units.
7. Remove cylinder block, thrust plate and
pump valve plate. See Fig. 26.
NOTE: The pistons may drop out of the cyl-
inder block when the block is removed. The
pistons are interchangeable and can be
reinstalled into any hole.
8. Hold swash plate flat in housing and
drive out roll pins. The long shaft will have two
roll pins. A hole is provided in the housing for
the pins to be driven into during removal, if
swash plate is positioned flat in housing. See
Fig. 27.
9. Remove pump shaft and bearing from
housing. See Fig. 28, lf bearing requires re-
placement, remove snap ring and press shaft
out of bearing.
10. Remove center section, valve plate,
cylinder block and thrust plate from motor hous-
ing and shaft. See Fig. 29.
-11. Remove acceleration valves from cen-
ter section.
NOTE: One of the acceleration valves has
an extra hole in it. This valve must be in-
stalled on the right-hand side of center sec-
tion during reassembly. See Fig.30.
Fig. 28 - Pump Shaft Removed
CSNTEA MO?OR HOUSINC
SECTralN ANU SII!,F?
ffi-rc o
\
?IIRUS?
CTLINNI!R
!LOC(
ASSEt{Bl,Y
Fig. 29 - Motor Disassembled
ctrNTllg
SECTIOX
^",;,ffi'rcw
SMATL
R.i{. 51DE OF ?RACTOR r.lt]LE ACCELERASI{]}i
VAL1,:[
Fig. 30 - Acceleration Valves Removed
MOTO!n HOUSil:{C
AND CNNTEF. g!]CT1ON
.|fl
@
35{
W. ,.ffie
W
I
;:ffi" s?
"1.,. I
C!'LINDER ?TJRUSY
BLOCX Fi,A?E
Fig. 26 - Pump and Molor Separated
}UIdF
}IOUSTNC
F{
it-
I
rRLJl{NiON
SEA{,S NOT
sHotitN
*\
sil",q s H
l]LATE
CON?ROL
gl:IAFT
I
#* I
(ffi
Fig.27 - Swash Plate and Shalts Removed
-'11-
'12. Remove check valve assemblies from
center section. See Fig. 31.
13. Remove shaft and bearing from motor
housing. See Fig. 32.
lf bearing requires replacement press shaft
out of bearing.
TRANSM ISSI O N REASSEM BLY
Lubricate all parts to aid in assembly.
1. lnstall motor shaft into motor housing.
See Fig. 33.
2. lnstall thrust plate as shown in Fig. 34.
3. Position motor housing with deep por-
tion of fixed swash plate upward and slide cyl-
inder block assembly onto shaft as shown in
Fig. 35.
4. Refer to Fig. 30 and install acceleration
valves in center section.
NOTE: The acceleration valve with small
hole at tapered end must be installed on
right-hand side of center section.
5. lnstall check valves in center section.
See Fig. 31.
6. Position gasket and motor valve plate
over dowel pin on center section as shown in
Fig.36.
NOTE: The pump valve plate and motor
valve plate look identical but they are not.
The motor valve has 4 lead-in chamfers at
end ol slots and the pump valve plate has
2 lead-in chamfers. See Fig. 37.
7. Position center section against motor
housing with open end of check valves away
from motor housing as shown in Fig. 38.
B. lnstall pump shaft and bearing into pump
housing and install swash plate. See Fig. 39.
9. Position pump valve plate on center sec-
tion as shown in Fig. 40.
10. Place the pump housing against center
section and secure with retaining bolts. See Fig.
41. 11. lnstall implement relief valve into left-
hand upper port on pump housing and charging
relief valve on right side.
'12. Replace oil seal in charging pump hous-
lng. lt the housing is a ball bearing type, inspect
bearing and replace if necessary.
13. Refer to Fig. 42. lnstall drive pin, gero-
tor assembly and charging pump housing and
secure with retaining bolts.
14. Connect transmission to rear axle as-
sembly.
Fig. 31 - Check Valve (1) Removed
t1f ?{')n
IICUS.INC
Fig. 32 - Molor Shalt Removed
Fig. 33 - Motor Shaft lnstalled ln Motor Housing
Fig. 34 - lnstalling Thrust Plate
-12-
CON?ROL
5llA!'f
*,
E
st101{N
*\
SkrAsH
P I, A'TE
ffxb !-
%*6 rd
I
Triu${rt]N
Stli\!-T
Fig. 39 - Swash Plate and Shafts - ldentilication of
Fig. 35 - lnstalling Cylinder Block
i\rf TOR pullp
VALYE VALVU
PLA?a pLATll
Fig. 37 - Valve Plate ldentilication
Parts
Fig. 40 - Pump Valve Plate Positioned On Center Section
Fig. 41 - Pump and Motor Housings Posilioned Against
Fig. 36 - Valve Plate and Gasket Positioned On Center
Section
Fig. 38 - Center Section Positioned On Motor Housing
Center Seclion
&
\Id
O+lEF
t
CIIA3.GING
ru}It
l{ouSrNG
Fig.42 - Charging Pump - ldentilication ol Parts
-13-
NOTE: When removing or installing oil lilter
be sure the oil filter retaining tube is staked
in pface at a point where 1/2" ol threads
are exposed. See Fig. 43.
15. Refer to the appropriate heading and
install transmission in Tractor. Fill with M--1'l1O
lubricant or a good grade of Type "A" trans-
mission oil.
REAR AXLE DISASSEMBLY
The rear axle assembly consists of a two-
speed gear change with a differential assembly.
Fig. 44 shows a view of the rear axle assembly.
To disassemble proceed as follows:
1. Remove wheel hubs and axle housings.
2. Remove housing side cover.
3. Remove thrust washer from output shaft
and remove differential and axle shafts.
4. Remove retaining ring from shift rail and
remove shift fork and sliding gear.
NOTE: lt is not necessary to remove shift
rail to disassemble the gear case. lf it is
desired to remove the shift rail, remove set-
screw, spring and ball lrom outside of case
before removing shift rail.
5. Remove remaining gears, shafts, thrust
washers and spacers f rom the case.
REAR AXLE REASSEMBLY
lnspect all parts for wear or damage. Re-
place as required.
1. lf removed, insert shift rail into gear case
and install detent ball and spring secured by a
setscrew. Shift rail to detent position and turn
detent screw in all the way then back out '1 turn.
2. Place output gear and thrust washer on
output shaft and insert into case. Leave thrust
washer off the other end of shaft. See Fig. 45.
3. lnstall sliding gear - sha[t with thrust
spacer (thick washer). See Fig. 46.
4. Slide input shaft into low range gear
(from beveled tooth side of gear) followed by a
bevel gear, spacer and thrust bearing into the
case. See Fig. 47.
5. Hold sliding gear with larger gear down,
hold shift fork with long side of hub down and
insert forks into slot in gear.
6. Position gear and fork in case followed
by thrust washer, as shown in Fig. 48.
7. lnstall spacer, high gear with bevel on
teeth down and thrust washer. See Fig. 49.
8. lnstall retaining ring on shift rail, dif -
ferential assembly and output shaft thrust wash-
er. See Fig. 50.
Irla:Ti Tr:-r -- I rm
EX?ENDS !'' our cr
|:I.IUS]NC AN'i S?AKE
IN FLACE
Fig. 43 - Oil Filter Tube Location
OUTPUT
CEAR IIF}. IjI{I]IITIl]!I,
31-ir)INal llliyl.lT,
!:!i\R CllAli
fNPUT
S llAI'T
?!l11UST
I]}iAR INC
Fig. 44 - Rear Axle Assembly
Fig. 45 - Output Shalt and Gear lnstalled
.U?PiJT
Cfirlt \ al
'II II1J5T
Fig. 45 - Sliding Gear Shaft Installed
-14-
lNPUT
5llqF?
9. Carefully install cover over axle and shift
rail and secure with retaining bolts.
10. lnstall bearing and seal in axle housings
and install over axles against thrust bearing and
seal as shown in Fig. 51.
11. Secure housing to case with retaining
bolts.
Fig. 51 - lnslalling Axle Housing
SERVICING THE DIFFERENTIAL
1. Remove bolts securing differential to-
gether and separate the unit. See Fig. 52.
2. lnspect all parts for wear or damage.
Replace as required.
The pinions, cores and side gears are inter-
changeable, the ring gear is nondirectional, the
differential carriers and axles are different. Dur-
ing installation the carrier with the long hub must
be installed on the longest axle shaft.
3. lnstall cores into ring gear with tabs on
cores in same groove of ring gear. See Fig. 53.
NOTE: The longest axle shaft ol
tial assembly must be installed
side of unit.
the differen-
in the case
Fig.47 - lnput Shalt and Bevel Gear lnstalled
HiFF
'i& s{ Erl,ec..,,r
:."::' '.w
TIIRUgT
A!]AR ING
!trAR1NO
Al'tt s.[Ar,
Fig. 48 - Shilt Fork and
ilrfllFtroi;.*Grcfxirl {rLrTFU? srtAfT
r{r6H *;i€pre}*]1ffi$&E* r"tlltus? lrtlsr]gF
?tjRusT
l,iASll1:&
DI IriaRtiNTIAt
RETI{ININC/. ilu*T sHoRTIs?
Rrltc %.i -l-., A:{tE siGF?
Gear lnslalled
Fig. 50 - Rear Axle Assembly Prior To lnstalling Cover
;'r:lrii: CCR.E Aj$ RING G.rAR Slllli
4 P1N10l.ig Al(t coRE GXAA
,\
TE J
a
ryi
*t
fra
F.RIER
t\\\
TIIRUS|l
rdA s ltt RPINIONS
Fig. 52 - Dilferential Assembly - ldenlilication of Parts
Fig. 53 - Positioning Cores ln Ring Gear
-15-
Fig. 54 - lnstalling Pinion Gears
4. lnstall pinions into the bores in the cores
as shown in Fig. 54.
5. lnstall side gears on axles and secure
with retaining ring.
6. lnstall thrust washers and differential
carriers on axle shafts.
NOTE: Long hub on carrier must be on
longest axle shalt.
7. lnsert axles and side gears into pinions
as shown in Fig. 55.
8. Bolt assembly together as shown in Fig.
56.
STEERING AND
STEERING GEAR ASSEMBLY
REMOVAL
1. Remove battery.
2. Remove panel below instrument panel
and over drive shaft.
3. Use a suitable puller and pull steering
wheel. See Fig. 57.
4. Remove right-hand side panel and re-
move bolts securing the hydraulic control valve.
5. Disconnect throttle and choke control
lever brackets from instrument panel.
6. Disconnect wires from switches and
ammeter. See Fig. 58.
NOTE: The starter solenoid may be removed
for more clearance.
7. Remove instrument panel and cowl as
an assembly. See Fig. 59.
B. Disconnect drag link f rom steering arm.
9. Remove bolts securing steering gear
assembly and remove as shown in Fig. 60.
INSTALLATION
1. lnstall steering gear assembly as shown
in Fig. 60, and secure with retaining bolts.
r"osssisT
AX],S SHAF?
Fig. 56 - Dilferential Assembly
FRONT AXLE
2. lnstall drag link and bolt control valve in
place.
3. lnstall instrument panel and cowl assem-
bly and attach wires to switches and ammeter.
See Fig. 61.
4. Position dust seal on shaft and install
steering wheel, covers over drive shaft and side
panel.
5. lnstall battery.
DISASSEMBLY
Refer to Fig. 62 and proceed as follows:
1. Remove locknut and retaining nut from
steering arm and remove arm, felt seal and
retainer.
2. Remove adjusting nut and slide shaft and
bearings f rom housing.
3. Remove upper bearing from housing.
REASSEMBLY
Refer to Fig. 63 for identification and se-
quence of parts and proceed as follows:
1. Lubricate both bearings and insert one
cup and bearing cone into gear housing.
2. Slide steering shaft into gear housing,
followed with another bearing cone and cup.
Fig. 55 - lnstalling Axle and Side Gear
-16-
Fig. 57 - Pulling Steering Wheel
Fig. 60 - Removing or lnstalling Gear Assembly
Fig. 58 - ltems Disconnected Prior To Removing Cowl
3. lnstall adjusting nut and tighten until
steering shaft has a slight bind when turned as
shown in Fig. 64. At this point adjust nut until
shaft has no end-play with no binding when
turned. Secure adjusting nut with cotter key.
4. lnstall bearing at upper end of shaft and
tube.5. Loosen adjusting screw in steering arm
and install steering arm into gear housing with
seal and retainer in place.
6. lnstall washer and one retaining nut on
steering arm shaft. See Fig. 65. Tighten nut until
steering arm has no binding or end-play. Secure
retaining nut in this position with a locknut. Fig. 63 - Steering Gear Assembly - ldentilicalion ol
Parls
Fig. 61 - lnstrument Panel and Cowl Assembly lnstalled
;,DJIJ5TINC LOC}qIJT
Fig. 59 - lnstrument Panel and Gowl Removed Fig. 62 - Steering Gear Assembly
I
I
\B!&R
o
/
INGS
si{Arf
-17-
Fig. 64 - Setting Pre-Load On Steering Shall
STENR]NG
A!}1 RgTAlUIlnc
Fig. 65 - Steering Arm Adjustment
7. Turn in on adjusting screw until a slight
drag is felt on steering shaft at mid range of
steering (this would be a straight ahead position
of f ront wheels).
B. Back out adjusting screw to eliminate
any binding of steering shaft and secure in this
position with locknut. See Fig. 66.
9. Fill steering gear housing through grease
fitting with a good grade of lithium base grease.
FRONT AXLE AND LINKAGE
STEERING LINKAGE
The steering Iinkage consists of a drag link,
bellcrank arm assembly and two tie rods. Check
all connections and pivot points for looseness.
The tie rods and drag link ends are the ball
socket type and are replaceable. The bellcrank
arm has two replaceable bearings.
BELLCRANK ARM AND BEARING
REPLACEMENT
1. Remove right side panel, covers over
drive shaft and flywheel rotary screen. See Fig.
67. 2. Loosen setscrew on transmission cool-
ing fan and slide fan rearward.
3. Remove bolts securing drive shaft to fly-
wheel and slide drive shaft forward off trans-
mission input shaft, as shown in Fig. 67.
4. Slide drive shaft out as shown in Fig. 68.
5. Disconnect drag link at f ront end.
Fig. 66 - Steering Gear Adjustment
Fig. 69 - Lower End of Bellcrank
6. Remove nut at lower end of bellcrank
arm assembly. See Fig. 69.
Fig. 67 - Drive Shalt Disconnected
Fig. 68 - Removing Drive Shaft
-18-

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