Toyota 3R-B 1969, Repair Manual

Page: 185 / 193

10-10 I G N I T I O N S Y S T E M - Distributor
A l s o align the center line with the
setting m a r k .
10. Install the adjuster c o v e r , and
adjust the point gap r e fe rr in g to
the P e r fo r m a n c e T e s t in the follow
p a r a g r a p h .
P e r fo r m a n c e T e s t &■ Adjustment
B r e a k e r A r m S p rin g Tension
Inspect the b r e a k e r arm spring tension
with a spring tension tester by pulling
at right angle of the b r e a k e r arm
point. Read the tester just when the
points o p e n .
T h e specified tension should be 400
to 550 gra m s (14.1 ~ 19.4 o z ) .
If the tension is l o w , re pla ce the
b r e a k e r point a ssem b ly.
F i g . 10-22 Adjusting Point V3686
Gap V3687
Cam D w ell A n g le
Check the cam dwell angle with the
distributor tester.
T h e angle should be 5 2 °. T h e ad­
justment can be made by adjusting
the b r e a k e r point gap.
If the gap is w id e, the angle will be
sm all, and if the gap is n a r r o w , the
angle will be la rg e.
B r e a k e r Point Gap
Rotate the distributor shaft until the
b r e a k e r a rm rubbing block is at the
top of the c a m .
C heck the point gap with a fe e le r
gauge, and adjust the gap to 0 .4 to
0-. 5 mm (0 .0 1 5 ~ 0 . 0 2 0 " ) .
T o adjust the gap, loosen the contact
point retaining s c r e w , and insert a
slot type s c r e w d r i v e r into the cut
portion of the contact point p la te.
N e x t, p ry the s c r e w d r i v e r to obtain
the c o r r e c t c le a r a n c e .
A f t e r adjusting the gap, tighten the
retaining s c r e w s e c u r e l y .
F i g . 10-23 Checking Cam V3689
D w ell A n g le
A d v a n c e Characteristics
Check the g o v e r n o r advance and the
vacuum advance with the distributor
t e s t e r . When the tests a r e p e r fo r m e d ,
test the g o v e r n o r advance first as the
vacuum a d v a n c e r is influenced by the
g o v e r n o r .
1. G o v e rn o r advan cer.
Operate the distributor in the di­
rection of rotation, and adjust the
>UT0*
F i g . 10-21 Checking S p rin g V3688
T ension