Chevrolet 10 Series 1970 Service Manual page 386

EMISSION CONTROL SYSTEMS 6T-2
TRANSMISSION CONTROLLED VACUUM SPARK ADVANCE SYSTEM
D I S T R I B U T O R A S S E M B L Y
n _ T L ii
T R A N S M I S S I O N S W IT C H ,
T ra n s m is s io n
3 Speed
4 Speed
P o w e rg lid e
T u rb o H y d r a -M a t ic 350
T u rb o H y d ra -M a tic 400
V A C U U M A D V A N C E UN IT
F^J
RELAY^—
( C L O S E D E X C E P T
W H E N T E M P E R A T U R E L
O V E R R ID E S W IT C H IS C L O S E D )
P a r k
N e u tra l
-
-
-
-
-
F i g . 1 — T ra n s m is s io n C o n t r o l l e d
C L E A N AIR V EN T
S O L E N O I D
(VALVE IN HIGH
GEAR POSITION)
M A N I F O L D
V A C U U M
FUSE
COLD
G E A R
R e v e r s e 1st.
- - -
- - —
- - -
- V ac. -
V ac.
- -
V a c u u m S p a r k A d v a n c e
C A R B U R E T O R
_j£
IG N IT I O N
T H E R M O S T A T I C
T E M P E R A T U R E O V E R R I D E
3=- S W IT C H
2nd. 3rd. 4th.
- -
V a c .
- - V ac .
V ac. - -
- V ac. -
V ac.
- -
S y s te m
CHEVROLET TRUCK SERVICE MANUAL