Yanmar 3JH3E - Page 280

Chapter 11 Troubleshooting
_1_._T_r_ou_b_I_e_sh_o_o_u_n_g __________________________ ~4JH3(BXGE
I
Chart 2
Chart 3
TROUBLE ANO TROUBLESHOOTING I
I
CYLINDER OUTPUTLS UNEVEN COUNTERMEASURE
Trouble and Troubleshooting POOR EXHAUST COLOR
~
( I -1) Bleed air.
( I - 7) Disassemble and clean
::::,
"'
( I -2) Disassemble and clean.
and repair or replace.
ro
Q)
( I -3) Replace.
E
.si
( I -4) Repair or replace .
C
( I -5) Replace.
::::,
0
( I -6) Tighten firmly.
u
~
I ( I I Uneven quantity of fuel oil injected I
(1: Air in 1he Juel inieclion pump \
(2) Faulty operation ol plunger \
15) Damaged exhaust union packing
(3) Damaged plunger sp1mg
(6) loose pinion screw
t3
(4) Faulty luel o,I eiec1,on valve\
(7) Faulty luel in1ec11on pump
2
1appe1
LU
\
---
"O
... I CYLINDER OUTPUT I
C
,, I IS UNEVEN
(U
(; I 0,1 leakage in injec1i0<1 /
(I)
(/)
system
::::,
/ 14) Irregular injection timing
(U
12 I Damaged valve
0
spring
(3) lnsullic1en1 in1eclion
/ (5) Slicking ol 1n1ec11on valvesCause
pressure in 1n1ecuon
valves
I
I
( Il I Faulty luel injection valve
I
~
~
( 11 - 1) Check and repair.
::::,
"'
ro
( IJ-2) Replace.
Q)
E
( 11-3) Adjust.
a3
"E
( 11-4) Adjust.
::::,
( 11-5) Clean.
0
u
a,
5 ( I -1) Check, repair or replace.
~ ( I -2) Replace.
( 11-1) Clean.
(
11 -2) Check, Repair or replace.
( 11 -3) Adjust. E ( I -3) Check, repair or replace.
~ ( I -4) Adjust.
( 11-4) Check, Repair or replace.
( 11 -5) Clean.
c3 ( I -5) Adjust.
ti
(I)
CT]
"O
C
(U
(I)
(/)
::,
(U
0
~
(I) Faulty luel injeclion pump
I [) Faulty Juel injection valve
(1) Fautty plunger oporatia11
121 Worn plueger
131 F,uhy e10ct<Jn valve
(4) Uneven quantity ol luel iniocted
\:5) lueguta:r luel m1ecl1on timLng
1 t J lnjoclioo opening is cl:)gged
121 Sl~k1ng ol valve needle
131 Low injecl,in pressure
(41 Fauly spray cond,!ion
15) Carbon depose
\
( i ) Overload,ng
(2) Too grea1 a quan1ity al lube od
l3i Carbon deposit ,n Sl.lCl<>n valves
/2
/ (4) Diny air cooler
15) Poor qua1t1y Juel oil
I Clogging ,n e,hausl syslemCause
POOR
EXHAUST
COLOR
( IV -1) Reduce ioad.
~ (Jll-1) Clean.
( IV -2) Adjust quan ity of oi I.
( IV-3) Clean.
(]J
E
(]J
"E
::::,
0
u
(IV -4) Clean.
(IV-4) Replace.with new oil.
( IV-4)
Clean.
I
Chart 4
TROUBLE AND TROUBLESHOOTING
!
I
TROUBLE WITH MARINE GEAR
a,
:S
V>
ro
Q)
E
a3
"E
::,
0
u
ti
2
LU
"O
C
(U
Q)
(/)
::::,
(U
0
~
:::,
"'
ro
(]J
E
w
"E
::::,
0
u
t I -1} Disassemble and dean. ( 1-7) Replace
( II -1 } Review( I -1 I
-11)
( Ill -1) Replace.
{ J -2} Repair or replace. ( I -8) Replace.
( II -2) Reduce load.
( 111-2) Replace.
{ I •3) Repair or replace. ( 1 -9) AdJus1 to correct posrtioo
( II -3) Replace.
( I -4) Replace ( I -iO} Reassemble
( 111-3} Eliminate dangerous rotation.
( II
-4) Check oil level and adjust.
< I -5) Repair.
(I -11) Check for oil leakage-
( □ -5) Check water level and adjust.
{ I -6) Adjust. and rep+enish.
( □ -6) Change oiL
( □ - 7) Review manual.
.....
.....
......
I
(I) low clutch oil pressure (clutch slips)
I
I [} Overheating
I
I
(Ill) Abnormal noise I
(1) Clogglnq o-1 lih&r or, !iuci1on'5ide .\ (7J WrM 5lld1og parts ot l{lrwardhevars.e
(I) Clulch ,1wage du• to _ \
\
iow o~ pres.sure
I
cofwar5ion11alve
O) Worn oil pump
\
12) CMch <l~age duo
(5) Problem w1!h ml coaler
\ I
l facessive ~a.el.lash of gear
\ l8) Damaged O-r1ng, V·ring in oil pressure pipe
IOOVirkladmg
fJ) S?01rig ol 0,1 p1euure
ad)1J-stmerit vatvE: \
161 Poo, quality o, ~•Pl>•ll9f>ate 011 . \
(A~ DarriaQe-cl o, old od P4essur1:
\
(9) low spaed valve handle sJips
(3) Damaged bearing
\
ad1uslme<1I val,,.e spnng \
\2) Damaged bearn,g
\
I 10) Poo1 assembly of low speed v.alve handle
(51 Damaged sa;al ting.
(7) P-oo.r operat1a-n al low speed 11aN8
\
(JJ Abno,maJ v1bra11on
141 Too much~\
(6} In.correct pos1t1omng or
\
( 11) lnsulhc10nt 011
\. I "°""' """ I
lorwardlfeverse conversion valve, \
\
I
/ H-) L~Oil' 011 press1.uc
/ ~ MARINE GEAR
( 1 t Seizure- al fric11on pl.ite
t1 I Seizure ol 1,cct10n plate
( 1) 011 loa>age I
( 3) Damaged or old lube 01!
/ m Foreigr) 117,1t,e1i.al h'I p~ S~5le-m
I
is ioo t•ug~
(2) Clogged lube L adjustment valve sprmg
11) Damage<l holding 5Prl"'l ol ?,;><'
I
111 Nol anolJ\lh wa,p in s1,,1 pla1e
I
oil M!or
J
I i4) oa leakage wherij l~ere is u:1moie c:ontrol
/ {51 Viscosi) ol l"be 011 "too hgh
I {4) Stick.mg o1 lube oil adiustment
151 Phase slippage
I
131 Dam3!)&d ho~illQ $D•ing 01 p,pa
I
11alveCounlermaasure
'
I
I (N) Ditt1culty changing into lorward, neutral, and rever.e l
I
l VI Dragging
I
I
NI Abnormal tube oil pressure!
......
~
.....
( IV-1) Replace.
(V-1) Replace.
(
VI -1) Check and repair.
(
IV -2) Replace.
( V -2) Replace.
(
VI -2) Disassemble and clean.
(
IV -3) Clean.
( V -3) Replace.
(
VI -3) Replace.
(
IV -4) Replenish 01 I and check.
Replace bellofrom.
( V -4) Adjust lube oil adiustment valve.
(Vl-4} Repair or replace.
( IV-5) Repair link system.
( V -5) Change oil.
11-2
Printed in Japan
HINSHl-H8009