Carburetors for old Dodge Trucks : DODGE TRUCKS 1941 1942 1946Previous | Home | Next
Reprinted June, 1946
CARBURETER INDEX AND PRICE LIST
Year Carburetor Dodge Models PListce Allowance
1941 DTBI-DTBIR DCI-DC2 Sup. by DTB3R
1941 DTB2R DCI-DC2 Sup. by DTB3R
1941 ETR 1-ETRIR DC3-DC4-DC5-
DC6-DC7 $29.40 $5.00
1942 ETRIR DD5-DD6 29.40 5.00
1942-46 DTB3-DTB3R (With Detachable 22.05 3.75
Clamp Type Air
DODGE TRUCKS 1941-42-46
Figure shows 1941 Carbureter
MOTOR TUNE-UP--BE ACCURATE! ALWAYS USE FEELER GAUGES!
CAUTION: Change worn or leaky flange gaskets. Tighten manifold bolts and test compression before adjusting carburetor.
WHEN MOTOR IS
sPARK LUG BREAKER IGNITION TIMING SET VALVES FLOAT LEVEL 'IDLE ASET
P POINTS With Motor Hot (Remove Gasket) DJUST-
GAP MENT SCREW
DC3—4° or .006" BTDC Intake .008" to
1/y 1¼ q Turns
.020" All Exhaust .012" 5/64' Open
If carbureter loads up after considerable service, check float level. Wear on lip of float lever will raise float level. Before adjusting float, be sure float lever pin plug is firmly seated. Reset float level by bending lip of float lever away from needle to raise level, or bending lip toward needle to lower float level. Bend vertical lip of float only.
If motor stalls while idling, set throttle lever adjusting screw so motor runs approximately 300 rpm. Then set idle adjustment screw as instructed above. If these adjustments do not correct the trouble, remove idle orifice tube and plug assembly and clean with compressed air.
If acceleration is not satisfactory, remove pump jet and clean with compressed air. Also examine pump link setting. Pump link has three holes giving short, medium and long strokes. If Iink is set to short stroke, reset to give longer stroke to pump piston. In hot weather, high altitudes, or when high test gasoline is used, connect pump link in inner hole, giving shorter stroke.
Pump Adjustment: Remove air horn assembly, back out throttle adjustment screw, and place pump operating link in center hole of throttle shaft arm. Adjustment can be made by bending horizontal portion of pump connector link, so that top of pump plunger shaft contacts lip of indicator on
pump stroke gauge T109-117S. Correct travel is 24/64" on DTB1-DTBIR-DTB2R and 26/64" on Et'Rl-ETRIR.
Maimum economy is secured only when breaker points, spark plugs, valves and motor timing are set to manufacturer's specifications. After motor is properly tuned, the following should also be done to insure satisfactory performance and economy:
(a) Float level must be set as above.
(b) Ball check in step-up valve assembly must seat and move freely. When reassembling, valve housing must be screwed in tight against seat.
(c) Step-up push rod must move freely in upper and lower guides.
(d) Step-up piston in upper casting should not bind and must be free of dirt.
(e) Main metering screw can be replaced with leaner than standard metering screws, for altitude or high test fuel.
Caution: Do not attempt to gauge metering jets with drills. These jets have been flow-tested, to insure correct fuel flow.