Chapter
11
Troubleshooting
_J._T_r_ou_b_l_es_h_o_o_ti_ng
__________________________
3,4JH3(B)(C)E
1 . Troubleshooting
It is important to thoroughly understand each system and
the function of all of the parts of these systems.
A careful
study of the engine mechanism will make this possible.
When problems arise, it
is
important
to
carefully observe
and analyze the indications
of
trouble in order to save
time
in
determining their cause. Begin by checking the
most easily identifiable causes of difficulty. Where the
cause of the difficulty is not readily apparent. make a
thorough examination of the system from the very begin-
ning, proceeding until the point of trouble can be deter-
mined.
While
experience
is
an
important
factor
in
pinpointing engine problems, careful study and under-
standing of the engine mechanism combined with good
common sense wlll help you to rapidly become more
expert at troubleshooting.
TROUBLE
AND
TROUBLESHOOTING
~
( I -1)
Add
1uel
oil
and prime.
~
( I -2) Bleed air.
~
( 1 -3) Remove waler from drain and fuel
oil
system and prime.
2
( ! -4) Check and make necessary repairs.
5
( I
-5} Ctean.
8 ( I -6) Replace.
( I ) Fuel oil supply
cut
off
(1)
lnsu!licient
ail
in
!uel
oil
iank
(3)
Water in
Juel
oil
lank
1
4) Fuel oll
COG!<
closed
(2)
A;,
in luel oil system and iuel
in1ec1,on
pump
(5) Clogging of luel oi! filler
l
61
Oamage in tuel
oil
syslem
Chart 1
THE
ENGINE SUDOENL Y
STOPS,
(
ll
-1) Replace.
(
Il
-2)
Clean carefully to insure good working order.
[
ll
l Governor trouble
( 1 J
Oa
mage
10
governor
spring
(2) Slicking
of
governor sleeve
0
2
w
(7) Pmblem
wilh
lue! leading pump
"O
C
ro
a.,
<h
:::l
<ti
0
(I)
Loose lube oil pressure adjustmenl valve
121
Clogging
or
lube
o,I
Mier
(3) Leakage
1mm
lube oii salety valve
(41 Trouble wilh lube
oil
pump
(5)
Relay
Opmalion
tii1,ge1ad
by
low
lube
oil pteSSUIU
THE ENGINE
SUDDENLY STOPS.
(7'1
0,•m11~1~1.!,nq
duo
lo
m-1;.utfil":-u'fnt
r-0oluX'J
waler
Cout'lte1mg:a:sura
(!Ill
Emergency
s1oppa~e
device
in
operalion
e ( Ill -1) Tighten adjustment valve.
¥J
(111-2')
Clean.
w (
111-3)
Tighten safety valve.
~
( Ill -4) Remove and repair or replace.
§ { IU-5) Return
to
original condition.
8 (
111-6)
Return
to
original condition.
Printed
in
Japan
HINSHI-H8009
(!!I• 7) Return to original condition. {
IV
-1) Remove and repair
or
replace.
(
IV
-2) Disassemble
and
clean cooling water pump and check cooling
water system.
11-1
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