Leakage Test - Toyota 2H Repair Manual

F a l t
LQl llI
--+
u
y
Faulty
Good
u
Good
Faulty
-
F U E l SYSTEM
Inje c t i o n N o z z l e s
I f t h e opening pressure i s n o l within specification, dis­
assemble the n o z zl e and c h a n g e t h e adjusting s h i m o n the
top of the pressure spring.
Adjusted opening
N O T E ,
•
V a rying the a d j u s t i n g s h i m t h i c k n e s s by
(0 . 0020
k g / c m · t
•
O n l y one a d j u s t i n g s h i m s h o u l d be used.
Good
(e) There should be no dripping afler injection.

LEAKAGE TEST

6.
While m a i n t a i ning pre s s u r e a t aboul
( 1 4 2 - 284
pressure (adjust by tester h a n d le ). check t h a t there i s n o
d r i p p i n g for
t h e reta ining nut.
I f t h e n o z z l e drips within
and o v e r h a u l t h e n o z z l e assembly.
,
,
6 . SPRAY P A T T E R N T E S T
( a ) T h e injection n o z z l e s h o u l d s h u d d e r a t a pumping
speed between
60
(b) C h e c k the s p r a y p a t t e r n d u r i n g shuddering.
If t h e s pray p a t l e r n is n o t correct d u r i n g shuddering. the
I
n o z z l e must b e replaced o r cleaned.
1 2 H I
pressure:
1 00 (0 0 3 9 4 1
( O . O S S I )
, .05 (0.04 1 3)
1 . 1 0 (0.04 33)
1 . 1 5 (0.04 53)
1 . 20 (0.04 7 2 )
1 . 2 5 (0.04921
1 . 30 (0.05 1 2)
1 . 35 (0.05 3 1 )
kPa).
1 , 40
1 .4 5 10.05 7 1 )
i n . l c h a nges I h e i n j e c t i o n pressure by a b o u t
(91 psi. 628
p s i . 98' - 1 , 961
1 0
s e c o n d s from t h e i njection hole or around
10
seconds, replace i t or c l e a n
15 - 60
times (new nozzle) per m i n u t e .
-
F U - 5
-
-
1 0 6 ' 2 6 kg/em'.!
( 1 , 4 9 3 1 . 7 7 8 psi!
11 0.296 1 2. 2 5 8 kPa)
mm lin.)
1 . 5 0 (0.0 5 9 1 )
1 . 55 (0.06 1 0 )
1 ,60 (0. 0 6 3 0 )
1 . 6 5 10.0650}
1 . 70 (0 0 6 6 9 )
1 . 7 5 (0.0 6 8 9 )
1 .8 0 (0. 0 7 0 9 )
6.4
1 . 8 5 (0.0 7 2 8 1
1 . 90 ( 0 . 0 7 4 8 )
, . 9 5 (0.0 7 6 8 )
0.05
m m
10.0 - 20.0
kg/cml
k P a ) below opening
30 -
times (old n o z z l e ) or