Hudson 1948 - 1952, Service Manual

Page: 39 / 333

ENGINE TUNE-UP 2 -19
3. Pump travel should be as follows:
8 Cyl. Carter WGD-773-S 5/16"
6 Cyl. Carter WGD-776-S 5/16"
6 Cyl. Carter WA 1-749-S 16/64"
6 Cyl. Carter WA 1-968-S 16/64"
6 Cyl. Carter WA 1-990-S 16/64"
Use Carter Universal Pump Stroke Gauge T-109-117-S
if available.
4. Adjust pump travel by bending the throttle connecting
link at lower angle for WA1 carburetors and at the upper
angle for WGD carburetors at (C), Figure 30.
METERING ROD SETTING (WGD):
NOTE: The metering rods must be adjusted after the
pump travel adjustment or when leaner than standard
rods are Installed. (No metering rod gauges are neces-
sary for this adjustment).
FIGURE 31
1. With the throttle lever set screw backed out as in "Pump
Adjustment", press down on vacumeter link (1), Figure
31, until metering rods bottom.
2. With mete ring rods bottoming, revolve metering arm
(K) until lip (H) (see insert) contacts vacumeter link (I).
Hold arm (K) towards connector link side and carefully
tighten the metering rod arm set screw (J).
METERING ROD SETTING (WA1):
1. Remove air cleaner and dust cover.
2. Remove hairpin clip and disconnect spring from metering
rod.
3. Remove metering rod and disk.
4. Insert metering rod gauge, J-1265 (Carter No. T-109-102).
Hold gauge vertical and be sure gauge is seated in meter-
ing rod jet, Figure 32.
5. Press down on vacuum piston link directly
over piston until it contacts the pump arm.
Clearance between metering rod pin and shoulder of gauge
should be less than .005" with throttle valve seated. Gauge
must not drag on pin.
6. Adjust by bending lip on piston link at (A).
7. Remove gauge and Install metering rod and disk.
8. Reconnect metering rod spring.
FIGURE 32
ANTI-PERCOLATOR ADJUSTMENT (WA1):
NOTE: Carburetor must be removed from engine.
1. Crack throttle valve .020" by placing gauge .T-1633
(Carburetor No. T-109-29), between throttle valve and
bore of carburetor on side opposite the idle port, Figure
33.
2. Clearance between percolator rocker arm lip and pump
arm should be .005" to .015".
I L L U S T R A T I O N S O N T H I S P A G E C O P Y R I G H T
1939 BY CARTER CARBURETOR CORPORATION. A L L
R I G H T S R E S E R V E D .