MASSEY FERGUSON MF230 Shop Manual page 59

1 46 - 1 5 0
Paragraphs
SHIFT LINKAGE
All Models So Equipped
'
146. Multi-Power shift control valve
spool must move fully to high and low
positions as hand control lever (10-Fig.
144) is moved to top and bottom of slot
To
in instrument panel.
move hand control lever towards
"HIGH" position until front of lever is
within 1.6 mm (1/16 inch) from top edge
of quadrant slot. Loosen clamp bolL
securing link (6) to lower rod (4), then
push lower rod downward as far as it will
go. Retighten clamping bolt to lock the
adjustment.
---
9 � -",
Fig. 144-Exploded view of Multi-Power shift
A boot
trol linkage and associated parts.
1.
Bracket
2 Shift lever
Pivot bolt
3
4 Lower link rod
6. Bushlns
60
SHIFT CONTROL VALVE
All Models So Equipped
147. REMOVE AND REINSTALL.
To
remove the Multi-Power control valve,
first detach engine from transmission
housing as outlined in paragraph 112.
adjust linkage,
Remove clutch release bearing, release
fork and pivot shafts. Disconnect MuJti·
Power shift linkage and oil inlet tube.
Unbolt and remove shift lever bracket
and linkage ass embly. Remove retaining
cap screws, then withdraw shaft retainer,
pto input shaft and valve housing as a
unit from transmission housing.
NOTE: The clutch unit
of transmission shaft until transmission
disassembled.
When detaching control valve from re­
tainer, note that left, front mounting
screw is sealed with a copper washer.
Make sure this washer is reinstalled in
the correct location when unit is
reassembled.
Use a new gasket (2-Fig. 145) when
reinstalling valve. Make sure the long
cap screw with copper sealing washer is
installed in the correct hole and tighten
all screws evenly to a torque of 4.1-5.4
N · m (36-48 in.-lbs.). Tighten the four
screws that attach housing
transmission to 54-61
lbs.) torque.
148. OVERHAUL.
removed "Multi-Power" control valve,
refer to Fig. 145 and proceed as follows:
Remove fitting (4) and detent assembly
(13), then withdraw shift valve (7).
Remove plug (12), washer
Fig. 145-Exploded view of Multi-Power shift con-
trol valve and associated 114rts.
con·
1 Ho.aing
10. Lever
2. 001ket
6. Link
3. Preuure line
Upper link 4. F i tting
7. rod
Spacer
8.
5. "0" ring
ring
9. Spring
6. "0"
1.
Shif\ valve
(10), then bump valve body (8) against
a wooden block, if necessary, to dislodge
regulating valve (9) from its bore.
Clean all parts in a suitable solvent.
Discard '·O" rings (5 and 6) when
r eassembling. Carefully examine all
parts for wear, scoring or other damage.
All parts ar·e available individually.
When reassembling the valve unit,
make sure r·egulating valve spool (9) is
installed "V'' notched end first. Tighten
plug (12) to a torque of 23-30 N
(17-22 ft.-lbs.).
NOTE: Shift
before fitting (4) Is Installed.
TRANSMISSION TOP COVER
prevents removal
is
All Models So Equipped
149.
cover, first remove hood and battery.
Disconnect drag links and power steer·
ing hoses if
remove the battery support and the air
cleaner. Disconnect interfering control
rods, cables, wires and tubes, then unbolt
the cover from top of transmission.
Notice that two screws are located at
front edge of top cover. Install guide
ft..­
studs, attach hoist and carefully raise
top cover.
(1)
to When reinstalling, place all gears i n
N · m (40-45 neutral and be sure detent pins and
springs are correctly positioned under
gasket. Lower cover into position over
'Ib
overhaul the the guide studs making sure levers
engage shifl rails. Tighten cover screws
to 47 N
SHIFTER RAILS AND FORKS
(11) and spring
All Models So Equipped
150.
f orks,
as ouUined in paragraph 149 and detach
<t.. , o
5�
Fig. 146-Exploded view of transmission shifter
ralls, forks and associated parts typical of Multi·
Valve body
8.
9.
Shll\ det�nta
Regulating valve 1.
10. Spring 2 Secood!high rnil
11 Ouket S. Lowlrevene
4 Shil\ forb
Plug
12.
auy.
5. St op plate
13. Detent
MASSEY -FERGUSON
valve
(7) must be In
1b
remove the transmission top
so equipped. Unbolt and
· m (35 ft.-lbs.) torque.
'Ib
remove the shifter rails and
fi rst
remove transmission top cover
6',..
'
Power (12-speed) models.
6. lnt.erl()(k pan
rail 7 Selector
8.
Planetary
9.
Planetary ahif\
· m
s e
ert d
2
ahif\ fork
rail