THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)
THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)
1-16
1-16
P
Prro
ob
blle
em
m
C
Ca
au
us
se
e
C
Co
orrrre
ec
cttiio
on
n
15.
15. Engi
Engine
ne dif
diffic
ficult to
ult to
start or will not
start or will not
start (exhaust
start (exhaust
smoke present)
smoke present)
(Continued)
(Continued)
10.
10. Star
Starting aid needed for cold weat
ting aid needed for cold weath-
h-
er or not working properly.
er or not working properly.
10.
10. Check / repair or repl
Check / repair or replace cold start-
ace cold start-
ing aid if necessary.
ing aid if necessary.
1
11.
1. Contact a
Contact a Cummi
Cummins Authorized
ns Authorized
Repair Facility.
Repair Facility.
16.
16. Engi
Engine nois
ne noise
e
excessive
excessive
1.
1. Oil su
Oil supply i
pply insuf
nsuffic
ficient or o
ient or oil pre
il pres-
s-
sure is low.
sure is low.
2.
2. Lubr
Lubrica
icating oi
ting oil is th
l is thin or di
in or dilute
luted.
d.
3.
3. Cool
Coolant tem
ant tempera
perature i
ture is abov
s above
e
normal.
normal.
4.
4. Loos
Loose m
e motor
otor moun
mount.
t.
5.
5. Fan be
Fan belt i
lt is mal
s malfunc
function
tioning.
ing.
a.
a. Fan be
Fan belt i
lt is too
s too loos
loose or t
e or too
oo
tight.
tight.
b.
b. Fan be
Fan belt i
lt is not
s not in al
in alignm
ignment.
ent.
6.
6. Damaged
Damaged vibrati
vibration
on damper
damper..
7.
7. Dr
Drive s
ive shaft i
haft is not
s not in ph
in phase.
ase.
1.
1. Chec
Check oi
k oil l
l level
evel.
. Refe
Refer t
r to Pr
o Proble
oblem
m
36. of this troubleshooting chart.
36. of this troubleshooting chart.
2.
2. Re
Refer
fer to
to the
the
Fuel and Lubricant
Fuel and Lubricant
Specifications
Specifications
in the
in the
Appendices
Appendices
for the proper type of oil to use.
for the proper type of oil to use.
Refer to Problem 34. of this trou-
Refer to Problem 34. of this trou-
bleshooting chart.
bleshooting chart.
3.
3. Refe
Refer to Pr
r to Problem
oblem 10. of th
10. of this tr
is trou-
ou-
bleshooting chart.
bleshooting chart.
4.
4. Insp
Inspect an
ect and tight
d tighten mot
en motor mou
or mounts.
nts.
5.
5.
a.
a. Chec
Check the t
k the tensi
ension and adj
on and adjust i
ust if
f
needed.
needed.
b.
b. Chec
Check pul
k pulley
ley alig
alignmen
nment and
t and
adjust is necessary.
adjust is necessary.
6.
6. Chec
Check vi
k vibrat
bration d
ion dampe
amper and
r and
replace if required.
replace if required.
7.
7. Repo
Reposit
sition d
ion driv
rive sh
e shaft.
aft.
8.
8. Cont
Contact a Cu
act a Cumm
mmins Au
ins Author
thorize
ized
d
Repair Facility.
Repair Facility.
17.
17. Engi
Engine nois
ne noise
e
excessive (com-
excessive (com-
bustion knocks)
bustion knocks)
1.
1. Poor
Poor fuel
fuel qual
quality
ity..
2.
2.
Engin
Engine operatin
e operating at low ambient
g at low ambient
temperature.
temperature.
1.
1. V
Veri
erify by oper
fy by operatin
ating from a tem
g from a tempo-
po-
rary t
rary tank wit
ank with good fuel.
h good fuel. Clean
Clean
and flush the fuel supply tanks,
and flush the fuel supply tanks,
and use the proper fuel (refer to
and use the proper fuel (refer to
the
the
Fuel and Lubricant Specifica-
Fuel and Lubricant Specifica-
tions
tions
in the
in the
Appendices
Appendices
).
).
2.
2.
3.
3. Cont
Contact a Cu
act a Cumm
mmins Au
ins Author
thorize
ized
d
Repair Facility.
Repair Facility.
18.
18. Engi
Engine power ou
ne power out-
t-
put low
put low
continued
continued
1.
1. Elec
Electron
tronic faul
ic fault codes ar
t codes are acti
e active.
ve.
2.
2. Fuel s
Fuel sucti
uction lin
on line or fuel f
e or fuel filt
ilter is
er is
restricted.
restricted.
1.
1. Re
Refer
fer to
to the
the
QSM11 Fault Code
QSM11 Fault Code
Information
Information
chart in this section.
chart in this section.
2.
2. Repl
Replace fuel f
ace fuel filt
ilter or chec
er or check fuel li
k fuel line
ne
for restriction and replace if neces-
for restriction and replace if neces-
sary.
sary.
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