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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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Chapters
Troubleshooting
