Cub Cadet Yanmar 3TNV72 - Manual (Page 270)

T
N
V IDI Service Ma
nual
13-7
Troubleshooting Charts
TNV IDI
Ser
v
ice Man
u
al
TROUBLESHOOTING
Troubleshooting Charts
Tr
ou
ble
Sympt
o
m
S
ta
rt
in
g
Pro
b
lem
In
su
fficie
n
t
En
gine
Ou
tp
u
t
Po
or
Exh
aust
Co
lo
r
High Knoc king Sou nd Du ring Co mb ustion
Abnorm al Engine Sound
Uneven Combu sti on So und
En
gine
Surging
Excessive Engine Vibration
Difficulty in Returning to Low Speed
Excessive Fuel Consumption
En
gine
O
il
Excessive Blow-by Ga s
Engine Coo
lant
Air In
ta
ke
Exhaust Temper atur e Rise
Co
rr
e
ctive
Ac
tio
n
Re
fe
re
nc
e
Pag
e
Engine Does Not Star t
Eng
ine
Sta
rts B
u
t
St
ops Soon
.
Exha
ust
Color
Du
ri
n
g
Wo
rk
Du ring Idlin g
Durin g Work Oper ation
Excessive O il Consumption
Dilu tion by Diesel Fue l
Oil with Water
Low Oil Press ure
Overhe at
Low Wat er T empera ture
Pres sure Drop
Pressure Ris e
Exhau
st
Smoke
Ordina ry
Whit e
Black
Whit e
Black
Ca
us
e
None
Little
Much
Engine System
Imp
ro
per
In
ta
ke
/Ex
ha
us
t
Va
lve
Cle
ar
an
ce
O
O
O
O
O
O
A
d
ju
st th
e Valv
e
C
lea
ra
n
c
e
.
See
“Mea
su
rin
g
an
d Adjust
ing
Va
lve Cle
ar
an
ce
” on
p
a
g
e
6
-3
4
.
Com
p
re
ssio
n Le
akage
fr
om Valve Sea
t
O
O
O
O
O
O
O
O
La
p th
e Valve Seat
.
See “
V
a
lve Face an
d Valve Sea
t”
on
p
a
ge
6
-2
8.
In
tak
e
/E
xh
au
st
Va
lve
Se
izur
e
O
O
O
O
O
O
O
O
O
O
O
Corr
ect
or Rep
lace I
nt
ake/
E
xh
au
st
Valve.
See “
In
s
p
ecti
on of
In
ta
ke and
Exha
ust Valves”
o
n
pa
ge
6-
27
.
Cylinder
Head Gas
k
et Blowout
O
O
O
Re
place t
h
e
G
a
ske
t.
S
e
e “Disassembly
of Cy
linder
He
ad
” on
p
a
g
e
6
-2
1.
Se
ize
d
or
Br
oken
Pist
on Ring
O
O
O
O
O
O
O
O
O
O
O
O
R
e
p
lace t
h
e
Pist
on Ring
.
See “
R
e
a
sse
m
bly of
Cylin
der
He
ad
” on
p
a
g
e
6
-3
1.
Wor
n
Pisto
n
Ring,
Pist
on
o
r Cylinde
r
O
O
O
O
O
O
O
Per
for
m Ho
nin
g
an
d Use Over
size
Parts.
Se
e
“H
on
in
g an
d Bor
in
g
”
o
n
p
ag
e
6-
53.
Seiz
ed Crankpin Metal
or Bear
ing
O
O
O
O
O
O
O
Re
pa
ir or
Re
p
lac
e.
Se
e “
Inspect
ion
of
Cra
nksh
af
t an
d
Ca
mshaf
t Com
pon
en
ts”
o
n
p
ag
e
6-
46.
Im
p
ro
per
Ar
rang
eme
n
t
o
f Pisto
n
Ring
Ga
ps
O
O
O
O
Correct
the Ring Joint Pos
itions
.
Se
e
“R
ea
sse
m
b
ly
o
f Pis
ton
s”
o
n
p
ag
e
6-
55.
TNV_
IDI_
Serv
iceM
anua
l_(3
TNV72
for
YN
only
).bo
ok
7 ペ
ージ
２０
０
７年
１
１
月２９
日 木
曜日
午後２
時５８
分