Paragraphs
1 24-1 27
remove planetary unit as outlined in
paragraph 121 and remove input shafts
as outlined in paragraph 122.
Remove snap ring (22) from front
of
mainshaft, then bump shaft rearward
out of front bearing. Withdraw shaft
rearward while lifting gears
(24
and 26)
out top opening of
case.
Note that mainshaft. diameter at the
rear
is
slightly larger than at front. Rear
bearing (28) must be removed and
reinstalled over forward end of shaft.
1b
reinstall mainshaft and gears,
reverse the removal procedure.
Be
sure
"open" side of front bearing faces away
from firsUreverse gear (24).
REVERSE IDLER ASSEMBLY
All Models So Equipped
124. The reverse idler gear (3-Fig.
126) and shaft (7) can be removed after
removing the mainshaft as outlined in
paragraph 123.
Reverse idler shaft is retained by a clip
(8) that fits into a notch in rear end of
shaft. Push shaft rearward from housing
and remove idler gear being careful not
to lose the
loose
bearing rollers (6). A
total of 56 bearing rollers are contained
in bore of gear.
Use a light coating of grease to hold
bearing rollers and washers in place in
gear during reassembly. A d
umm
y
shaft.,
slightly smaller in diameter than idler
shaft, can also be
used
to hold rollers and
washers in correct position. Dummy
shaft must be short enough that it can
be pushed out of front support boss and
removed from housing as idler shaft is
pushed into the gear from the rear.
Be
sure gear cluster is positioned in
transmission with smaller gear teeth
forward.
PTO LOWER SHAFT AND GEARS
All Models So Equipped
125.
1b
remove pto lower shaft
(60-Fig. 126) and gears, first remove
transmission assembly as outlined in
paragraph 119. Remove brake cross
shaft, clutch release bearing and fork,
and shift rails and forks. Remove front
cover plate (50). Remove snap ring (53)
from front of pto shaft, then thread two
cap screws into tapped holes in bearing
retainer
(56)
to
force
retainer and
bear·
ing off the shaft.. Pull shaft r
earw
ard out
of the countershaft
.
Unbolt and remove
input shafts (15 a.nd 21) and retainer (1 1)
as a unit from housing. Lift pto gear (59)
from transmission case.
When reassembling, be sure bub side
of pto gear faces forward (away from
countershaft). Install input shafts and
retainer making certain cutout section
of retainer faces downward. Apply
nonbardening sealer to threads of re
tainer cap
screws,
then tighten to 54-61
N
·
m (40-45 ft.-lbs.) torque. Insert pto
shaft through countershaft and pto gear.
Install bearing retainer (56) with bear·
ing over shaft. Use a suitable spacer
tube, washer and bolt threaded into front
end of shaft to pull pto shaft into the
MASSEY -FERGUSON
front bearing until washer (54) and snap
ring (53) can be installed at front of
shaft. Install front cover, apply
nonhardening
sealer
to
threads
of
retain-
ing cap screws and tighten to 54-61 N
·
m
(40-45 ft.lbs.) torque.
COUNTERSHAFT
All Models So Equipped
126.
1b
remove countershaft (64-Fig.
126) and gears, transmission must first
be removed as outlined in paragraph
119. Remove shift rails and forks,
planetary unit, pto lower shaft and
gear,
input shafts and retainer, and mainshaft
as outlined in preceding paragraphs.
Remove snap ring (61) from front of
countershaft and slide front gear (62)
off
the shaft. Remove snap ring (70) from
rear of shaft, then
use
a block of wood
and hammer to drive countershaft for
ward until
free
from rear bearing.
Withdraw countershaft forward from
housing and remove gears (67 and
68).
Renew parts as necessary.
Be
sure lo
install front bearing (63) with "open"
side facing away from gear teeth on
countershaft.
Install
needle bearing
(65)
flush with end of shaft. Install gears
with hub sides facing together. Insert
countershaft into housing from the front.
Block front of shaft, then tap rear bear
ing onto shaft until snap ring (70) can
be installed. Install constant mesh gear
(62) and snap ring (61) onto front of
countershaft.
EIGHT-SPEED TRANSMISSION
All models except MF230 may be
equipped with a sliding gear transmis·
sion coupled with a dual range planetary
reduction gear set providing eight for·
ward speeds and two reverse.
TRANSMISSION REMOVAL
All Models So Equipped
127.
1b
remove the complete eight
speed
transmission unit from the trac
tor, first drain transmission and
hydraulic system fluid and separate the
engine from transmission housing as
outlined in paragraph 112. Remove both
step plates, disconnect clutch
rod
and
both
brake
rods,
then unbolt clutch pedal
bracket. Disconnect the neutral starting
switch and remove battery. Unbolt and
remove the battery support and air
cleaner. Attach hoist to transmission top
52
cover, then unbolt and
lift
cover from top
of transmission case. Disconnect
hydraulic line inside transmission com-
Fig. 127-Exp/oded view of
eight-speed transmission
shifter ralls, forks and
associated parts.
I Sluft
1nterlodt
ball <et.aJner
2 Ball
3 Guke1
4 Nolcbecl plate
6
Selecl.or
6. Shift
rail
!2nd
&
4th)
7 Detenl spnng � plunger
8 Fork
9 Shin rai
l 13rdl
10 Fork
II
Pork
12. Shift rail
(IJl
&
,..,,
.
I
13. Plug
14. Selector
15. Shil\ rail (planetary)
16.
Fork
partment. Attach hoist to transmission
and support differential housing, then
unbolt transmission from differential
