
Paragraphs
1 89-193
stop
(7).
Scribe a line across lift
arm
hub
and lift cover casting, then move inner
lever back to transport stop. Measure
distance that scribed lines
are
separated.
On all models, distance between
scribed lines should be
3.2·3.9
mm
(1/8-5/32
inch). If dimension is not cor
rect, adjust transport stop as outlined in
paragraph
197
or
204
before proceeding
with further tests.
189
DRAFT CONTROL.
Th
check
draft
control,
run
engine at low idle
s
peed
.
Move inner quadrant lever
(6-
Fig. 179) against transport stop (7) and
operate draft control lever
(8)
to
raise
the lift
arms.
With draft control lever
fullly "UP", gage p
ressure
should not
be
and servo relief (or safety
should not
be
opening.
If
lift links do not move to full
lransport or through full range,
transport stop may be adjusted incon·ect
l
y
,
lift cover internal linkage may be
rnisadjusted or control valve may be
s
ticking If servo relief is opening, the
transport stop, lift cover linkage or
p
re
ss
ure control valve (if
so
equipped)
may be incorrectly adjusted.
Position draft control lever between
the sector marks (M) on draft quadrant
while leaving inner quadrant lever at
"TRANSPORT." The
lift.
links should re·
Fig.
178-Ret.r
to
text lor
checking end
edju.tlng
tren.,ott lltOp. P,....u,. control model
-'town.
L Scr1b<-
6
lRMr
q.
drant
L·•�r
1
Transport Lop
8 Draft
control
l•••r
Fig. 1 79-VIew showing sector
marks
(M) on draft
control quadrant. Refer
to
text
tor
checking and
adJusting draft control.
74
main at a midposition with draft lever
within
6.3 mm (1/4
inch) of either
sec
tor mark.
If
incon-ect, refer to paragraph
198
or
205
for adjustment procedure.
190.
POSITION CONTROL.
'Ib
check position control,
first.
attach a fully
mounted implement to 3-point linkage.
Place draft control lever (8-Fig.
176)
to
full "UP" position and response control
lever
(4)
in "FAST" position. Run engine
at low speed and operate inner lever
(6)
in "POSmON" control range to fully
raise and lower lift links several times.
It must be possible
t.o
fully raise and
lower lift links and to position them in
any intermediate setting.
If lift links do not raise or lower fully,
perform the installed adjustments as
outlined in paragraph
195
or
101.
If lift
links creep down then up again (hunt),
leakage
is
indicated in control
valve, valve chambers, pump pistons or
lift cylinder seal rings.
Move inner quadrant lever to
"TRANSPORT." The lift links should
raise to transport positiOn without
reaching maximum system pressure.
If
lift Jinks do not reach transport position
or if maximum system pressure is ob
t.ained, refer to appropriate paragraph
195
or
202
for adjustment procedures.
191.
MASTER CONTROL SPRING
SENSITIVITY. To check sensitivity of
control spring, first attach a fully
mounted implement to lower links and
top link. Place inner quadrant lever
(6-Fig.
176)
in "TRANSPORT."
Operate engine at low rpm and move
draft. control lever
(8)
to raise implement
to approximately midpoint of lift travel
(implement must be clear of ground).
Apply a downward force to rear of im
plement. System should respond by
lowering implement slightly. Apply an
upward force to 1·ea1· of implement.
System should raise implement
as
long
as upward force is being applied.
Fig
.
130-The hitch m
..
ter
control •prlng I• louted In
,..., of hydraulic llff cowr.
lm
pltmtnt
dreff
toed I•
tren•·
mltttd through the •prlng
to
ectuete draff control llnbge.
I
Cl�v,.
head
2 P,n
3
Cover
4
A<IJustmg nut
5 Control oprtng
6
Spnng oeat
1
Plunger
8
O.erload
stop
9 Set ..,...,w
10
Nylon
plug
II L•fl
cover
12
Control
beam
13
Bushong•
14
Clev11 rocker link
MASSEY -FERGUSON
If system does not respond as de·
scribed, control spring should be ad·
justed as outlined in paragraph
194
or
201.
4
192.
RESPONSE CONTROL. To
check operation of response control,
first
attach a fully mounted implement to
3-point links. Place inner quadrant lever
(6-Fig. 176) in "TRANSPORT.''
Operate engine at low rpm and move
draft control lever
(8)
to full "UP" posi·
tion. Move response control lever
(4)
to
"SLOW" position, then move draft con
trol lever rapidly to full "DOWN"
position.
The implement should hesitate slight·
ly, then lower at. a moderate rate of
speed. Place response lever in "FAST"
position. Repeat lowering test using
draft control lever to raise implement,
then quickly move control lever to
"DOWN" position.
The implement should lower notice
ably qu1cker with response lever in
"FAST" position than previous check
with lever in "SLOW" position If
response is not as described, adjust as
outlined
m
appropriate paragraph
200
or
206.
193.
PRESSURE CONTROL. To
check operation of pressure control valve
(if
so
equipped), attach an implement. or
weight to lift links. Run engine at
1000
rpm, move draft control lever
(8-
Fig.
176)
to full "UP" position, move inner
quadrant lever
(6)
to full "HIGH" (con
stant pumping) in pressure control
range of quadrant and observe
p
ressure
indicated on gage (1). Pressure should be
17230-17930
kPa
(2500-2600
psi).
Move inner lever
t.o
full "LOW" posi
tion and observe gage reading. Pressure
should be
0-500
kPa
(0-75
psi). Move in·
ner lever to just raise implement and
place a load on hydraulic system.
Pressure indicated on gage should not
fluctuate more than
700
kPa
(100
psi)