1942 - 1947 Chevrolet Shop Manual



	7-10

	INSPECTION 1. Wash all parts in clean gasoline or cleaning solvent. 2. Inspect the shifter forks. Make sure they slide freely on the guide bar. 3. Inspect all parts for wear. REASSEMBLY 1. Install the long shifter fork on the guide bar with the fork end toward the nearest guide bar mounting screw hole, making sure to line up one shift lock recess in the fork with the hole drilled through the guide bar. Install one ball and the spring in the guide bar hole. Start the other shifter fork on the guide bar and assemble the other ball on the spring. Fig. 16.	With a finger on the end of the operating shaft, press the shifter yoke lever firmly against the selector bell crank. Then assemble the guide bar and shifter fork assembly to the cover with the low and reverse shifter fork toward the narrow side (bottom) of the cover. At the same time make sure the selector bell crank fits into the slots in the shifter forks and that the slots in the ends of the shifter yoke lever fit over the pins in the forks. Bolt the guide bar to the cover, Fig. 18. When assembling the


		Fig. 18—Assembling Guide Bar and Shifter Forks to Caver cover and shifter fork assembly to the transmission, the low and reverse sliding gear and the clutch sleeve must be in the neutral position because the guide bar is piloted in the transmission case. A new gasket should be used between the cover and transmission when assembling. 6. Check the operation of the transmission by shifting all gears. 7. Install transmission in the car. 1/2, 3/4 AND 3/4-TON SPECIAL TRUCKS
	Fig. 16—Installing Shifter Forks on Guide Bar 2. With a flat tool compress the spring until the ball is in the hole in the guide bar. Keeping the spring compressed, slide the fork over the ball and move both forks to their neutral position. 3. If the operating shaft cork seal and its retainer are worn or damaged, they must be replaced. 4. Assemble the operating shaft to the cover, and then assemble the anti-rattle spring and shifter yoke lever to the bell crank end of the operating shaft. Install selector bell crank and lever. Move the selector bell crank over the center of the shifter yoke lever, Fig. 17.
		Service operations for the 1/2, 3/4 and 3/4-ton special truck transmissions are the same as those for the passenger car transmission except for the reassembly of the roller bearing countergear, and disassembly and reassembly of the cover and shifter mechanism. Fig. 19 shows this transmission assembly in cross-section. Disassembly of the roller bearing countergear is the same as on the passenger car transmission. The following procedure covers countergear installation. Countergear Reassembly 1. Place some cup grease in the roller bearing area of each end of the countergear. Install the 25 rollers in each end. The grease will hold the rollers in place while placing the gear in the

	Fig. 17-Selector Bell Crank in Center of Shifter Yoke