Carrier SUPRA 950Mt - Servicing Glow Plugs

4
-
7
6
2
-
-
6
1
1
X
X
-
-
2
0
(
0
3
/
0
4
)
-
-
pulsa
tion frequ
ency hi
gh : fuel circu
it has
low pressure drop -- high flow.
-
-
pulsa
tion frequ
ency lo
w (or null) : hig
h pres-
sure drop inside the
circuit -
-
low or
zero flow.
Check for restriction inside the circuit.
4.
3.
7
Se
rv
ic
in
g
Gl
ow
pl
ug
s
D
CT2
.29
TV
/
CT3
.44
TV
&
CT3
.6
9TV
en
gi
ne
ha
ve
slow glow plugs :
25 seconds to reach 800
_
C under 12.5 V
In case of fast brun of glow plugs, verify that micro
configuration is correct :
-
-
TV for
all
engin
e typ
es
Whe
n
se
rvi
ci
ng
,
the
gl
ow
pl
ug
is
to
be
fit
ted
ca
re
ful
ly
into the cylinder head to prevent damage to glow plug.
T
orque valu
e for the
glow plug is 0.8 to 1.5 mkg (6
to
1
1
ft-lb).
Checking for a Defective Glow Plug
One
me
tho
d
is
to
pl
ac
e
an
am
me
ter
(or clip
-on
am
me
ter
)
in
se
ri
es
wi
th
ea
ch
gl
ow
pl
ug
an
d
en
er
gi
ze
the
plu
gs.
Each
plu
g
(if
goo
d)
sho
uld
sho
w
amp
era
ge
dra
w.
A
good plug draws 8
to 10
A.
4.
3.
8
Cl
ut
ch
co
nt
ro
l
a.
Engageme
nt
speed
Clu
tch
is
des
ign
ed
to
eng
age aroun
d
120
0
rpm
(en
gin
e
spe
ed)
for
Sup
ra
750
Mt
_
/
850Mt
_
an
d
90
0
rp
m
for
Sup
ra
950
Mt
_
.
This
eng
age
men
t
spe
ed
wil
l
inc
rea
se
with shoes wear. It is crucial to replace shoes before
engagement speed reachs around 1600 rpm to avoid
clutch burnout.
Control procedure
Re
mo
ve
cl
ip
an
d
co
nn
ec
tin
g
ro
d
fro
m
sto
p/r
un
solenoid. Manually move run lever in full position. Start
the unit in Engine mode and let it reach high speed.
Then decrease speed until clutch disengage. From
this position slowly increase engine speed until clutch
engages (compressor is driven by engine) and record
the speed.
b.
Shoe
s wea
r
1
.
Ob
s
e
rv
e
c
l
u
tc
h
h
o
u
s
i
n
g
to
c
h
e
c
k
fo
r
a
n
y
discolouration of the metal surface, sigh that clutch
has overhead. In that case, check shoes condition.
2.
Re
mo
ve
cl
utc
h
co
ve
r
pl
ate
an
d
us
in
g
a
mi
rro
r
ob
se
rv
e
sh
oe
co
nd
it
io
n
an
d
li
ni
ng
ma
te
ri
al
thickness. If thickness is less than 1 mm, replace
shoes.
4.
3.
9
Se
rv
ic
ing
al
te
rn
at
or
Inspection
-
-
verify hi
ghtnes
s of connec
tions ex
pecial
ly
for the excitation wire. If disconnected unit shall
display ALT AUX and battery will not reloaded
during unit operation.
Brushes (every 5 000 hours
)
-
-
make s
ure batte
ry termin
als and
altern
ator
exciting cable are disconnected.
-
-
remove th
e two screws h
oldin
g the regu
la-
tor.
-
-
repla
ce
the
brushe
s.
-
-
reasse
mbly
the reg
ulator
.
Voltage control
-
-
Pow
er u
p the
uni
t.
-
-
Press UNIT DA
TA u
ntil volta
ge meas
ure-
ment output is displayed.
4.4
SER
VICIN
G
AND
ADJ
USTIN
G
V-
BEL
TS
WARNING
Be
wa
re
of
V
-
be
lt
s
an
d
be
lt
dr
iv
en
co
mp
on
en
ts
as
th
e
un
it
ma
y
st
ar
t
automatically.