Toyota 5R 1969 Repair Manual page 178

D riv in g P l a t e
C am
■
J f A d v a n c e r
O c ta n e S e l e c t o r
. . .
T h e distributor includes the b re a k e r points and the condenser which a r e con­
nected in the primary circuit. It also includes the rotor and the distributor cap
which are connected in the secondary circuit.
T h e distributor is driven by the g e a r on the camshaft in "time" with the engine.
A s the spark timing va rie s according to the load and the engine revolution, the
automatic spark advance mechanism is provided in the distributor. T h e centri­
fugal go v e rn o r advances the position of the cam according to the engine r e v o ­
lution, and also the vacuum advancer controls the position of the b r e a k e r plate
according to the load on the engine.
A ls o the octane selector is provided in the vacuum advancer, and it is n e c e s ­
sary to adjust the spark timing in accordance with the quality of fuel.
Specification:
P a r t N o.
Weight
Condenser capacity
B r e a k e r point spring
tension
B r e a k e r point gap
Dwell angle
G o v e rn o r S p rin g
W eig h t S u p p o r t P in
b e f o r e A d v a n c e
F ig . 10-3 Operation of G overn or
D ia p h rag m
b e f o r A d v a n c e
F ig . 10-4 Operation of Vacuum A d v a n c e r
19100-44010 fo r 5R
A p p ro x . 1 . 1 kg (2 .4 lb s )
0.20 ~ 0.24 microfarad
400 ~ 550 grams
0 .4 ~ 0.5 mm
(0.016 ~ 0 .0 2 0 ")
52°
IG N IT IO N S Y S T E M - Distributor
A d v a n c e
A ngle
G o v e rn o r
W eig h t
C am
D riv in g P in
'
A d v a n c e d
A d v a n c e
A d v a n c e d
19100-40050
fo r 3 R - C
10-3
G0185
G0186
A ngle
G1273
G1274
19100-40015
fo r 3 R - B