CHRYSLER SERVICE MANUAL
CHRYSLER C-300B—469
Back off idle speed adjusting screw until pri-
mary throttle valves are fully seated in their
bores.
(Make sure that fast idle adjusting screw
is off the fast idle cam.)
Hold a straight edge across top of dust cover
boss,
as shown in Figure 6, and adjust length
of pump rod as in preceding adjustment until
the flat on top of pump arm (under set screw)
is parallel with upper edge of straight edge.
When making this adjustment, be sure that fast
idle adjusting screw does not hold throttle open.
To adjust pump setting, bend throttle connector
rod at the upper angle, using Tool T-109-213,
as shown in Figure 7.
METERING ROD ADJUSTMENT
Loosen set screw in metering rod arm (if pre-
viously tightened) enough to obtain a slight
bind on pump shaft. Lift lever slightly. With
primary throttle valves seated in their bores,
depress metering rod link until metering rods
bottom, as shown in Figure 8. Keeping lever
in contact with the metering rod link, tighten
set screw securely.
CHOKE ROD ADJUSTMENT
Loosen choke lever clamp screw. Insert a .020
inch wire gauge Tool T-109-29, between tang
on fast idle cam and boss on throttle body
casting. Hold gauge in place by pressure of
screwdriver exerted on choke lever clamp
screw, as shown in Figure 9. This will auto-
matically take up all slack in the linkage. Hold
choke valve tightly closed, and tighten clamp
screw.
CHOKE VALVE
HELD CLOSED
FAST IDLE
CAM TANG
.021 INCH WIRE GAUGE
54x492
Fig^
9—Choke Rod Adjustment
VELOCITY VALVE ADJUSTMENT
To check position of velocity valves, disconnect
secondary throttle operating rod from the pri-
mary operating lever by removing hairpin clip.
Insert Gauge, Tool T-109-242(27/64)", between
the lower edge of velocity valve and bore, as
shown in Figure 10. In this position the tang
of secondary throttle lever should be resting
against its stop.
To adjust position, bend tang on secondary
throttle lever, using Tool T-109-41 until correct
clearance of
2
%
4
inch has been obtained, when
tang is resting against its stop. Reconnect sec-
METERING RODS BOTTOMED
THROTTLE VALVES
SEATED (CLOSED)
54x491
27/64 INCH
GAUGE
VELOCITY VALVE
SECONDARY „ ,^
OPERATING ROD—*
SCONNECTED ^
TANG
RESTING
AGAINST
STOP
or
Fig.
8—Metering Rod Adjustment
STOP
54x531 A
Fig.
10-Checking Velocity Valve Clearance
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