Chevrolet 10 Series 1970, Service Manual

Page: 386 / 671

EMISSION CONTROL SYSTEMS 6T-2
TRANSMISSION CONTROLLED VACUUM SPARK ADVANCE SYSTEM
D IS T R IB U T O R A S S E M B L Y
n _ T L ii
C LE A N AIR VENT
V A C U U M A D V A N C E UNIT
F^J
T R A N S M I S S I O N S W IT C H ,
C A R B U R E T O R
_j£
S O L E N O I D
(VALVE IN HIGH
GEAR POSITION)
M A N IF O L D
V ACU U M
RELAY^—
( C L O S E D E X C E P T
W H EN T E M P E R A T U R E L
O V E R R ID E SW ITC H IS C L O S E D )
FUSE
IG N ITIO N
COLD
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 ID E
3=- SW ITC H
G E A R
T r a n s m is s io n
P a r k N e u tra l R e v e r s e 1st. 2nd. 3rd. 4th.
3 Speed
- - - - - V a c . -
4 Speed
- - - — - - V a c .
P o w e r g lid e
- - - - V ac. - -
T u r b o H y d r a -M a t ic 350
- - V ac. - - V ac. -
T u r b o H y d r a -M a t ic 400
- -
V ac.
- -
V ac.
-
F ig . 1— T ran sm ission C o n tr o lle d V a c u u m S p a rk A d v a n c e System
CHEVROLET TRUCK SERVICE MANUAL