56 BULLETIN 198, UNITED STATES NATIONAL MUSEUM 



the voltage regulator, the generator and the starting motor — are by 

 Auto-Lite. The 6-volt storage battery is located beneath the hood, 

 to the left of the engine. 



A constant-level, float carburetor is used and is fitted with an air 

 filter on the air intake. A mechanical fuel pump and a fuel filter 

 are used in conjunction with the carburetor. A gear oil pump sup- 

 plied the bearing surfaces of the engine with lubricating oil under 

 pressure at all times, the oil passing first through a filter attached 

 to the cylinder head of the engine. 



The gross weight of the vehicle is 2,700 pounds, the wheel base is 

 79 inches, and the tread is 48 inches. Disk wheels, secured to the 

 brake drums by five bolts, mount 5.50-16 tires. A spare wheel and 

 tire can be carried at the back of the vehicle. 



The frame is of steel and is connected to the front- and rear-axle 

 housings by four semielliptic springs. The frame is located above the 

 housings, while the springs pass beneath them. Telescopic shock 

 absorbers are provided for each spring. 



Power can be transmitted from the engine to all four wheels when de- 

 sired, but the front wheels are usually driven only when the necessity 

 arises on difficult terrain. A transfer case is located near the center 

 of the frame, to the left of the transmission, and provides means for 

 driving a shaft leading to the differential unit in the front-axle as- 

 sembly. The shaft passes to the left of the engine, which is offset to the 

 right in the frame for this purpose. A similar shaft leads from the 

 transfer case to the differential unit in the rear-axle assembly. Each 

 differential unit contains spiral bevel gears, and each drive shaft has a 

 universal joint at each end. The left of two short levers on the trans- 

 fer case enables the driver to engage or disengage the front shaft, 

 while the rear remains engaged. The right of the two levers enables a 

 low- or high-gear ratio to be selected within the transfer case. The 

 selective transmission provides three speeds forward and one reverse, 

 the operating lever being located to the right of the two short levers. 



The final drive to the two front wheels is by a shaft and universal 

 joint at each end of the front-axle housing. The steering is of the 

 conventional worm and follower type, with the tie bar connecting the 

 two front-wheel spindles located in front of the axle. Four-wheel 

 hydraulic brakes are provided, the right pedal actuating the master 

 cylinder. The left pedal operates the disk clutch located between the 

 engine flywheel and the transmission. The parking-brake lever is 

 mounted beneath the left end of the instrument panel. Each of the 

 four brake drums is mounted on two tapered roller bearings, while each 

 of the two front-axle kingpins is similarly supported. 



