Carburetors for old Dodge Trucks : CARTER VELOCITY GOVERNORPrevious | Home | Next |
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Form 6545A—Canadian
DODGE TRUCKS
August, 1947
Reprinted April, 1948
CARTER VELOCITY GOVERNOR
Used in conjunction with carbureters EYB1-EYB4-EYCI-EYC3-ET1-ET2-ET4-E7B1-E7C1-E7F1
Truck models: Dodge 1946-47 WJ, WS, WR and WDX Power Wagon
1948 DE7, DE8, DE9 and DEX2 Power Wagon
GOVERNOR ASSEMBLY
1. Cover Plate Lead Seal Plugs
2. Secondary Adjusting Screw Plug
3. Speed Adjusting Screw Plug
4. Lead Car Seals
5. Idle Mixture Adjusting Screw
6. Governor Unit Number
7. Throttle Shaft Housing Assembly
8. Throttle Stop Screw
9. Idle Speed Adjusting Screw
The action of the throttle valve is the same as that in conventional carbureters
up to the governed speed of the engine. The governor therefore, does not
affect idle or economy nor does it affect power or acceleration under the
speed at which engine is governed.
GOVERNOR ADJUSTMENTS
The governor is properly calibrated when it leaves the factory, and should
not require any attention, aside from a possible change in the maximum engine
speed to satisfy the operator's requirement. Before any governor adjustment
is attempted engine must be tuned to manufacturer's specifications.
Run engine until normal operating temperature is reached. The manifold vacuum
at sea level must be at least 16 inches with engine operating at no load, vehicle
standing, transmission in neutral (wide open throttle with governor controlling
engine speed) and at least 17 inches at idling speed (450-500 R.P.M.) with
an allowable reduction of approximately 3½ inches at 5,000 feet above
sea level.
To adjust maximum governed engine speed, remove large screw cap and gasket
and with an off-set or short screw driver, tarn the primary adjusting screw
(Figure 2) clockwise to decrease engine speed, and counter-clockwise to increase
engine speed. CAUTION: Do not turn adjusting screw out beyond the end of the
governor housing to the extent that it will interfere with the complete tightening
of the screw cap. Primary spring can become disengaged from the adjusting screw
if screw is turned too far out (do not force).
The maximum governed, no load, engine speed should not exceed 3000 revolutions
per minute on the WK, WR, DE8, DE9 trucks, or more than 3200 revolutions per
minute on the WI, DE7 trucks and WDX, DEX2 Power Wagon.
It is desirable to check and set the maximum governed engine speed with the
aid of a reliable electric or mechanical tachometer. If a tachometer is not
available, the governor setting can be determined approximately by operating
the vehicle at full throttle on a smooth level road surface, no load, in transmission
third gear on the WJ, WK, WR, DE7. DE8, DE9 trucks, and transmission second
gear on the WDX, DEX2 Power Wagon.
Check the rear axle gear ratio and tire size and refer to the "Speed Chart" (Chart
1 on the WI, WK, WR, DE7, DE8, DE9 trucks, Chart 2 on the WDX, DEX2 Power Wagon),
for the maximum governed miles per hour (M.P.H.) in transmission (third gear
on WJWK, WR, DE7, DE8, DE9 trucks, second gear on WDX, DEX2 Power Wagon), and
adjust the governor if necessary.