1943, TM5-3020, War Department, Maintenance Manual and Parts Catalog; Tractor, Crawler Type, Gasoline, 20 DBHP, with Bulldozer and Towing Winch, Model CA-1 “Clarkair” & TM5-1270 Bulldozer Hydraulic Tractor Mounted , 59 Inch Blade , Model BABX For Model CA-1 Clarkair Crawler.
民國32年，TM5-3020，美國陸軍，克拉克 CA-1 空運履帶推土機維修手冊及零件目錄含TM5-1270 BABX型油壓59吋推土鏟《Black Water Museum Collections | 黑水博物館館藏》
The carburetor measures out fuel and air in definite proportions, and prepares the mixture for burning in the cylin- ders. If too much air is admitted, the mixture burns so slowly that it continues to burn through the exhaust stroke, and ignites the next incoming charge which pops back through the carburetor. If too little air is used, it cannot produce complete combustion, consequently part of the fuel is wasted. From this, it is evident that the air and fuel proportions must be accurate within very close limits. The engine is shipped with the carburetor correctly set, and as long as it runs well, don't disturb the carburetor adjustments.
SETTING THE CARBURETOR - Before starting any adjustments, make sure they are necessary. Check the fuel line, fuel supply, and the sediment trap. Drain the carburetor by removing the drain plug Figure 7. If fuel does not flow freely from this opening, the line clogged. If the carburetor drips continuously, the float or float va may be leaking or improperly set for too high a level. Correction such trouble is described in the detailed repair section of this bo
TM5 Maintenance Manual and Parts Catalog, Bulldozer hydraulically operated, mounted on Model CA-1 Clarkalr Crawler Tractor, 59 inch blade, Model RABX, published by LaPlant-Choate Mfg. Co. Inc., Cedar Rapids, Iowa is furnished for the information and guidance of all concerned.
(AG 062.11 (4/26/43) PC (C). June 10, 1941.)
G. C. MARSHALL
Chief of Staff
J. A. ULIO Major General The Adjutant General
This Technical Manual TM5 contains:
Section I Operators Instruction Manual
Section II Maintenance Manual
Section III Parts Manual for machines shipped on War Department Purchase Order Numbers:
and are effective on machines of serial No. BABX-20 and up.
LAPLANT-CHOATE MFG. CO., INC. CEDAR RAPIDS, IOWA