TM 9-2320-211-20
line (17, fig. 2-43) at the governor air inlet on the
(4) Pull the free end of the choke control
left side of the carburetor, and tighten the con-
(from the front side of the cab cowl) until the choke
nector (all models except M62, M246, and M543).
control wire reaches the choke valve plate lever.
(5) Position the control under the lever
(9) Position the fuel pump-to-carburetor line
(16) at the elbow at the front of the carburetor, and
bracket clamp, and insert the end of the control
tighten the connector.
wire in the hole in the choke valve plate lever
(10) Remove the nut from the ball stud at the
swivel.
( 6 ) With the choke control in against the
end of the throttle cross-shaft-to-carburetor rod,
insert the ball stud in hole at the end of throttle
instrument panel as far as it will go, move the upper
valve lever (15), and install the nut on the stud.
end of the choke valve plate lever forward as far as
(11) Slide the air cleaner-to-carburetor inlet
it will go, and tighten the swivel screw and lever
hose (10) over the air inlet sleeve at the rear of the
bracket clamp screw.
carburetor, and tighten it with the hose clamp.
(12) Adjust the choke control (para 2-66a).
CAUTION
(13) Adjust the throttle control (para 2-68a).
Do not move the lower end of the throttle
(14) Adjust the carburetor (a, a b o v e ) .
valve plate lever toward the rear of the
2-66. Choke Control
truck in order to insert the ball stud.
NOTE
NOTE
The throttle control linkage is properly
Choke control is properly adjusted when
adjusted when the full range movement of
the choke control valve plate inside the
the throttle valve lever matches the full
c a r b u r e t o r air horn is in its wide-open
range movement of the accelerator pedal.
position, and the choke control knob is all
a. Adjust the throttle as described in paragraph
the way in against the instrument panel.
2-65 a.
NOTE
b. Remove the nut from the ball stud at the back
A marking line on the left end of the choke
side of the throttle valve plate lever (15, fig. 2-43).
valve plate shaft indicates the position of
c. Remove the throttle cross-shaft-to-carburetor
the valve plate.
rod from the throttle valve plate lever.
a. Adjustment.
NOTE
(1) Loosen
the
swivel
screw
When the throttle cross-shaft-to-carburetor
securing the choke control wire to the choke lever.
rod is removed from the throttle valve plate
( 2 ) Push the choke control in against the
lever, the lever will be moved automatically
instrument panel as far as it will go.
to the wide-open throttle position, due to
(3) Move the upper end of the choke valve
the action of the governor spring inside the
plate lever (fig. 2-66) forward as far as it will go
engine speed governor mounted on the left
and tighten the swivel screw.
side of the carburetor.
b. Removal.
d. Depress the accelerator pedal until the un-
(1) Loosen the
swivel
screw
derside of the pedal contacts the head of the pedal
securing the choke control wire to the choke valve
stop screw. Hold the pedal in its completely
plate lever.
depressed position.
( 2 ) Loosen the choke lever bracket clamp
e. Raise the front end of the throttle cross-shaft-
screw (fig. 2-66), and remove the choke control
to-carburetor rod. Check to see whether the ball
from the choke valve plate lever and lever bracket.
stud can be inserted in the hole at the lower end of
(3) Remove the nut and lockwasher from the
the throttle valve plate lever without changing the
choke control at the back side of the instrument
length of the rod.
panel, and pull the choke control assembly from the
f. If necessary, adjust the length of the throttle
cab cowl and the front of the instrument panel.
cross-shaft-to-carburetor rod.
c. I n s t a l l a t i o n .
(1) Loosen the jamnut at the rear of the ball
(1) Insert the choke control in the hole of the
joint on the forward end of the throttle cross-shaft-
instrument panel, and install the lockwasher and
to-carburetor rod, and turn the ball joint (clockwise
retaining nut on the choke control at the back side
to shorten, or counterclockwise to lengthen rod)
of the instrument panel.
until the ball stud can be connected to the throttle
(2) Position the choke control knob so that the
valve plate lever, without moving either the rod or
lettering on the face of the knob is in the horizontal
lever.
position and tighten the retaining nut.
( 3 ) Push the free end of the control wire
(2) Tighten the jamnut at the rear of the ball
joint. Release the accelerator pedal.
conduit through the hole in the rubber grommet in
the cab cowl.
