MASSEY FERGUSON MF230 Shop Manual page 55

1 37 - 1 3 8
Paragraphs
SHIFTER RAILS AND PORKS
All Models So Equipped
137. 1b remove the shifter rails and
f orks, first remove transmission top cover
and detach transmissiOn from differen­
tial housing using paragraph 127 as a
general guide. It IS not necessary to
remove transmission housing from
engine.
Carefully remove detent springs and
plungers. Remove safety w1re and loosen
all set screws from sh1ft f orks and
planetary selector. Remove the planetary
shift fork, then unbolt and remove the
shift rail lock <F1g. 136) from rear of
transmission. Pull thl! shuttle and
planetary shift rail out rear oflransmis­
sion and withdraw planetary selector
and the shuttle f ork CFig. 135) from top.
Slide the remain1ng two shift rails out
of shift. f orks.
Observe the f ollowing when reassem·
bling. Position the three transmission
shift forks mto gears as shown in F1g.
137. It may be necessary to move the
I
shuttle coupling forward
may be inserted into groove. The shift
forks are not interchangeable. The left
(2nd and �rd gear shift fork should have
lug, set screw and shift notch all toward
front as shown in Fig. 135. The notch
will
be toward front but
and set screw
lug will be toward rear of correctly m·
stalled right C l::i t gear) sh1ft f ork. Shde
shift rails into forks. Sh1ft ralls are not
56
Fig. 137-Referro teKt for cor·
teet Installation of shift forks
and ralls.
interchangeable. The two short ralls
should have notches for shift rail lock
(Fig. 136) facing toward the interlock p1n
and Oats toward top. Be su•·e set screws
engage detent in shift !'ail, tighten
screws and safety wire all set screws. In·
stall the shift. rail lock with interlock pin
(Fig. 136). Spacer should be on longer
screw at left as shown. Tighten both
screws to 41-47 N · m C30-35 ft.-lbs.
that fork
so
torque.
To
All Models So Equipped
138.
necessary to remove transmission top
cover and separate transmissiOn from
diff erential housing using paragraph
PLANETARY UNIT
remove planetary unll ll IS
Fig. 135-VIew of shift ralls
and forks Installed In manuel
shuttle transmission.
Fig. 136--V/ew of the shift rail
S�cer should be on the
lock correctly Installed.
longer of the two screws et
leh.
MASSEY -FERGUSON
127 as a general guide. lt is not
necessary to detach transmission from
engine. Remove planetary shift f ork and
coupling from rear of planetary. Remove
the four l'elaining cap screws. then
w1thdi·aw rear cover plate (51-Fig. 139),
thrust washer (43) and planet carrier
(50). Pry rang gear (42) and dowels from
transmission case. Remove front cover
(41) and sh1m (40).
Planet pinion shafts (49) are a tight.
til
p1•ess m planet carrier (50). Use a
suitable press to remove and install pin­
IOn shafts.
74
Fig. 138-Exploded view of shift levers, forks and
59 Tnuu ma on
IA•u
60 Le
ralls for menuel shuttle transmission.
Spnna
lop
6 3 Spnn11
69 ShU\ raa l llau
covt"r
75
70
.. lot. 2nd I<
r I
76 Pa n 1
65
71
PlaM
3rd•
77.
81
72 Slun roal!planeuoryJ
Bcoo l
73
2 Shan fork lplantuorya
6
67
Shuul�
7 4
64 Sbutll• fork
Spront� l<!al
Sh11\ fork !2nd &
"0" rln11
3rdl
Shal\ rall 12nd & 3rdl
66 78 Boo t
Interlock
79 Se!ICI"O�
80 De�<tnuo & aprinp
68 Shtl\
fork
lllll
a.ary
le••r
lplanea.aryt
ll<'leclor