Carrier SUPRA 850Mt - Figure 4-3 Speed and Run Control Solenoids; Replacing Solenoids (Figure 4-3)

4
-
5
6
2
-
-
6
1
1
X
X
-
-
2
0
(
0
3
/
0
4
)
a.
Check
ing fuel c
ircuit
1. Th
e
en
gi
ne
mu
st
ru
n
wi
th
bl
ee
d
po
rt
sl
ig
ht
ly
un
sc
re
we
d.T
hi
s
in
di
ca
tes
tha
t
in
je
cti
on
pu
mp
pr
es
su
re
is
gr
ea
te
r
th
an
0.
1
ba
rs
.
(I
f
no
t
ch
ec
k
fo
r
ai
r
leakages and clean fuel lines).
2.
The electrica
l pump is
desig
ned to deliver 0.7 bar
.
The fuel circuit flow rate in the return line is about 5
liters per hour.
b.
Changing f
uel filt
er
After changi
ng fuel filter opera
te the electrical pum
p
to bleed properly the fuel circuit before engine start.
CAUTION
When
cha
nging
fue
l
fil
ter
,
the
new
fil
ter
should be filled with clean fuel.
4.
3.
4
Re
pla
ci
ng
sol
en
oid
s
(F
igu
re
4-
3)
1.
Rem
ove spri
ng from
the run/s
top (or
spe
ed) leve
r
(item 4.).
2.
Dis
con
nec
t
sol
eno
id.
Rem
ove clip
(ite
m
3.)
from
linkage rod (item 5.).
3.
Rem
ove sole
noi
d
and insta
ll the
new one (clip +
spring).
4.
Energiz
e the solen
oid and veri
fy that :
D
for STOP SOLE
NOID :
run
/sto
p lever is at
full
positi
on. Lever
shoul
d
not touch
surface
.
D
for RUN SOLENOID :
spe
ed leve
r
tou
chs hig
h
sp
ee
d
ad
ju
sti
ng
sc
re
w
(at
ra
ted
op
er
ati
on
speed).
Stop/Run lever
RUN
Keep 1 or 2 mm gap
Stop/Run lever
STOP
5.
De-ene
rgize the sol
enoid an
d verify that :
D
 fo
r
ST
OP
SO
LE
NO
ID
:
en
gi
ne
sh
ut
do
wn
s
immediatly. Otherwise, adjust solenoid position.
D
for S
PEED
SOLE
NOID
: Sp
eed
lev
er t
ouc
hs
low
sp
ee
d
ad
ju
st
in
g
sc
re
w
(a
t
ra
te
d
op
er
at
in
g
speed).
Speed lever
HIGH
SPEED
Speed lever
LOW
SPEED
High speed
setting screw
Low speed
setting screw
6.
Ve
rify
that
sol
eno
id
mov
es
smo
othl
y
whe
n
ene
rgi
zed
or de-energized.
1.
Ru
n
sol
en
oid
2.
Bo
ot
3.
Cl
ip
4.
Spri
ng
(spe
ed
sole
noi
d)
5.
Lin
kage
rod
(run
)
6.
Engi
ne
spee
d
leve
r
7.
Spee
d
sole
noi
d
8.
Plu
ng
er
1.
4.
6.
3.
3.
5.
7.
3.
2.
2.
Only for 750Mt
_
& 850Mt
_
8.
Figure 4-3
Speed and run cont
rol solenoi
ds