Chevrolet 10 Series 1970 Service Manual page 370

ENGINE FUEL 6M -6
Installation
1. Install solenoid in b racket so that it does not con­
tact throttle le v e r .
2. Set the carb u retor in the closed throttle position
with the choke off.
3. Start engine and set id le to specification s (r e fe r to
tune-up decal) using the ca rb u retor's low id le speed
s crew .
4. With solenoid en e rg ize d and solenoid plunger screw
out two turns fro m being fu lly bottomed in plunger,
slide solenoid into b racket so that the plunger just
sligh tly contacts the carbu retor le v e r .
bracket strap to secu re the solenoid in place.
5. Back out ca rb u retor low idle speed s crew approxi­
m ately one turn (c o u n ter-clock w ise).
speed s c re w w ill be r e s e t in the la st step outlined
on engine decal.
Throttle Linkage Adjustment
M odels: CE 4 0 - 5 0 - 6 0 , M E 5 0 -6 0 ,
1. D epress a c c e le ra to r pedal to flo o r.
2. Hold carb u retor th rottle le v e r in wide open throttle
position.
General Description ...........................................................................
Major Service O p e r a tio n s ...................................................................
Control V a l v e .................................... ..............................................
The M odel 2G C arbu retor G overnor (fig . 2G) provided
with 350 V -8 engines is a m echanically driven vacuum
actuated mechanism set to govern engine speed at 4000
rpm maximum under fu ll load conditions. With this lim it,
fu ll advantage o f engine h orsepow er is allow ed without
danger of ex cessive w ear due to overspeeding. This 4000
rpm lim it establishes an excellen t pattern fo r shift con­
tr o l fo r automatic type transm issions.
The govern or is com prised o f two basic units; the cen­
trifu ga l control va lve housed in the distributor (See En­
gine D istributors in Section
actuator which is mounted on the carburetor throttle body
(fig . 2G). These two components are inter-connected by
tubing.
An engine overspeed warning device is incorporated
into the govern or as shown in F igu re 2G. A description
o f the oversp eed warning system w ill be found in Sec­
tion 6Y o f this manual.
Operation
The function o f the 2G govern or is to lim it engine speed
and yet allow a w ider throttle opening when p ow er is r e ­
quired. The throttle le v e r is connected to the throttle
shaft in such a manner that turning the throttle le v e r does
Tighten the
The low idle
PS JO, SE 5 0 - 6 0
20 ENGINE GOVERNOR
(VACUUM SPINNER TYPE)
INDEX
Page
6 -6
M
6M-7
6M-7
GENERAL DESCRIPTION
6Y), a n d a carburetor
3. Adjust threaded sw ive l on throttle control rod until it
fr e e ly enters hole in throttle le v e r.
,
M odels: CE 1 0 - 2 0 - 3 0 KE 1 0 - 2 0
, 2 0 -3 0 ,
CS-SS 4 0 - 5 0 - 6 0 PS
1. D epress a cce le ra to r pedal to flo o r.
2. Hold carbu retor throttle le v e r in wide open throttle
position.
3. Adjust s w ivel on a c c e le ra to r con trol rod until it
fr e e ly enters hole in a c c e le ra to r pedal le v e r.
Models: CS-KS 10-20, CS 30,
1. D epress a cce lera to r pedal to flo o r.
2. Hold ca rbu retor throttle le v e r in wide open throttle
position.
3. Adjust sw ivel on a c c e le ra to r control rod until it
fr e e ly enters hole in a c c e le ra to r control le v e r.
Mod e ls : TE-TS 5 0 - 6 0
1. D epress a c c e le ra to r pedal to flo o r.
2. Hold carbu retor throttle le v e r in wide open throttle
position.
3. In stall a c c e le ra to r control
slee ve tube nut and ball joint sle eve into b a ll joint
and tighten sleeve tube nut.
G overnor H o u s in g ...........................................................................
Trouble S h o o t in g ................................................................................
F ig . l g —D is trib u to r and G o v e rn o r M o u n tin g
2 0 -3 0 , M S -5 0 -6 0
PE
PS 4 0
c a b l e assem bly with
CHEVROLET TRUCK SERVICE MANUAL
Page
6M-7
6 -8
M