Toyota 3R-B 1969, Repair Manual

Page: 179 / 193

10-4 I G N I T I O N S Y S T E M - Distributor
Vacuum advance characteristics:
P o r 5R Engine
Begins
T iming advances
F o r 3 R - B & 3 R - C Engines
Begins
Tim ing advances
at 70 ~
6 .5 ~
9.1 -
1 2 . 0
~
13.8 -
15.0 ~
90 mmHg (2.76 3.54 inHg)
10.5,
13.1'
16.0'
17.8'
19.0
at
at
at
at
at 130
180
260
330
390
m m H g
mmHg
mmHg
mmHg
mmHg
( 5.12
( 7.09
(10.25
(13.00
(15.25
inHg)
inHg)
inHg)
inHg)
inHg)
at 45 ~ 60 mmHg (1.77 ~ 2.36 inHg)
3.0 ~ 5.0 at 90 mmHg (3.5 4 inHg)
5.0 ~ 7.0 at 120 mmHg (4.73 inHg)
7.7 ~ 9.7 at 180 mmHg (7.09 inHg)
10.0 ~ 12.0 at 250 mmHg (9.8 4 inHg)
G o v e r n o r advance characteristics:
F o r 5R Engine
Begins
Tim ing advances
F o r 3 R - B Engine
Begins
T im in g advances
F o r 3 R - C Engine
Begins
Tim ing advances
Octane s ele c tor advance
at 400 ~ 600 rpm
4.0 ~ 6.0 at 1,000 rpm
13.0 ~ 1 5 .0 ° at 1,900 rpm
15.0 ~ 1 7 .0 ° at 2,500 rpm
at 320 ~ 480 rpm
6.0 ~ 8 . 0 ° at 1,000 rpm
8.5 ~ 1 0 .5 ° at 1,200 rpm
13.0 ~ 1 5 .0 ° at 2,500 rpm
at 320 ~ 480 rpm
8.7 - 1 0 .7 ° at 1,000 rpm
12.0 ~ 1 4 .0 ° at 1,200 rpm
16.5 ~ 1 8 .5 ° at 2,500 rpm
One complete turn is about 2.3
O
One graduation is about 5.2
Rem oval
1 . Disconnect the high tension w i r e s
from the spark plugs and the igni­
tion coil.
A s the high tension w ir e s a re of
an internal resistance type ( R e -
sitive c o r d ) , c a r e must be taken
that the w i r e s a r e rem oved by
pulling on the c o rd insulating fittings
rath er than on the w ire insulation.
2. Disconnect the pr i ma ry w i r e from
the distributor.
3. R em ove the vacuum pipe from the
vacuum advan cer.
4. L o o s e n the distributor clamp
s c r e w ,a n d re m o ve the distributor.
Disassembly
1. R em o v e the distributor c a p , ro to r,
dust proof c o v e r and the adjuster
c o v e r .