THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)
THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)
1-20
1-20
P
Prro
ob
blle
em
m
C
Ca
au
us
se
e
C
Co
orrrre
ec
cttiio
on
n
25.
25. Engi
Engine
ne vib
vibrati
ration
on
excessive
excessive
(Continued)
(Continued)
5.
5. Engi
Engine belt dr
ne belt drive
iven acces
n accessori
sories
es
malfunc
malfunctioning:
tioning: fan hub, alternator
fan hub, alternator,,
Freon compressor or air compres-
Freon compressor or air compres-
sor.
sor.
6.
6. Engi
Engine mo
ne mounts
unts are w
are worn o
orn or dam
r dam--
aged.
aged.
7.
7. Damaged
Damaged vibrati
vibration
on damper
damper..
5.
5. Chec
Check
k for
for inte
interfer
rference.
ence. Loos
Loosen
en
belt, if applicable, to isolate compo-
belt, if applicable, to isolate compo-
nent from vibration.
nent from vibration.
6.
6. Vis
Visuall
ually chec
y check engi
k engine moun
ne mounts and
ts and
replace if necessary.
replace if necessary.
7.
7. Chec
Check vi
k vibrat
bration d
ion dampe
amper and
r and
replace if required.
replace if required.
8.
8. Cont
Contact a Cu
act a Cumm
mmins Au
ins Author
thorize
ized
d
Repair Facility.
Repair Facility.
26.
26. Engi
Engine wil
ne will not
l not
crank or cranks
crank or cranks
slo
slowly
wly (OEM
(OEM
electrical)
electrical)
1.
1. Master
Master disconnec
disconnect sw
t switch
itch is
is turned
turned
off.
off.
2.
2. Load
Load on hy
on hydraul
draulic
ic pump
pump..
3.
3. Batt
Battery c
ery connec
onnection
tions are br
s are broken,
oken,
loose or corroded.
loose or corroded.
4.
4. Low
Low batt
battery
ery char
charge.
ge.
5.
5. Batte
Battery r
ry ratin
ating is too l
g is too low or ba
ow or batter
ttery
y
is
is defectiv
defective.
e.
6.
6. Shif
Shifter is
ter is not in th
not in the neutr
e neutral posi
al position
tion..
7.
7. Cir
Circui
cuit brea
t breaker (
ker (CB2, C
CB2, CB7 or
B7 or
CB10; Illustration
CB10; Illustration
6-16
6-16
) is tripped or
) is tripped or
defective.
defective.
8.
8. Circ
Circuit br
uit breaker (
eaker (CB1) i
CB1) is defec
s defective.
tive.
9.
9. Def
Defecti
ective tr
ve truck po
uck power s
wer soleno
olenoid
id
(L1).
(L1).
10.
10. Defecti
Defective neutral start rel
ve neutral start relay (K1).
ay (K1).
11. Defectiv
11. Defective
e starter solenoid (L2).
starter solenoid (L2).
12. Defective starter.
12. Defective starter.
13.
13. Defecti
Defective ignition swi
ve ignition switch (S1).
tch (S1).
14.
14. Defecti
Defective fuel cutoff val
ve fuel cutoff valve (L4).
ve (L4).
15.
15. Loos
Loose or
e or brok
broken wires
en wires, pins, or
, pins, or
plugs between any of the compo-
plugs between any of the compo-
nents in Causes 1. thru 14.
nents in Causes 1. thru 14.
1.
1. Tur
Turn mas
n master dis
ter disconnect s
connect switch
witch on.
on.
2.
2. Isolate
Isolate and rem
and remove r
ove restric
estriction
tion from
from
hydraulic circuit.
hydraulic circuit.
3.
3. Chec
Check f
k for
or dama
damage.
ge. Repl
Replace,
ace, tigh
tight-
t-
en or clean.
en or clean.
4.
4. Check
Check electr
electrolyte
olyte level
level and spec
and specific
ific
gravity
gravity.
. Recharge or repl
Recharge or replace bat-
ace bat-
teries.
teries.
5.
5. Replace
Replace with
with correct
correct rated bat
rated battery
tery..
6.
6. Plac
Place shift
e shifter in the neut
er in the neutral pos
ral positi
ition.
on.
7.
7. Res
Reset or re
et or replac
place cir
e circuit b
cuit break
reaker
er
(CB2, CB7 or CB10).
(CB2, CB7 or CB10).
8.
8. Replace
Replace circ
circuit
uit breaker
breaker (CB1).
(CB1).
9.
9. Repl
Replace tr
ace truck pow
uck power sol
er solenoi
enoid (L1).
d (L1).
10.
10. Replace neutr
Replace neutral start rel
al start relay (K1).
ay (K1).
1
11.
1. Replace starter solenoid
Replace starter solenoid (L2).
(L2).
12.
12. Replace or repair s
Replace or repair starter
tarter..
13.
13. Refe
Refer to Compon
r to Component 4. of the
ent 4. of the
Component
Component T
Troubleshooting
roubleshooting
chart in
chart in
Section 6.
Section 6.
14.
14. Re
Refer to
fer to
Fuel Solenoid Valve
Fuel Solenoid Valve
found in
found in
Section 2
Section 2
for proper fuel
for proper fuel
cutoff valve operation.
cutoff valve operation.
15.
15. Isolate an
Isolate and repair
d repair..
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