1942 - 1947 Chevrolet Shop Manual



	*5-6*

	BRAKE SHOE ADJUSTMENT Passenger Cars, 1/2 and 3/4-Ton Trucks 1. Raise the car and place stand jacks front and rear so that all four wheels rotate freely. 2. Disconnect the emergency brake cables at the idler lever. This precaution should be taken to eliminate the possibility of the brake shoes dragging the drum due to misadjustment of the emergency brakes. 3. Remove the adjusting hole covers and insert a screw driver through the adjusting hole and engage the teeth on the adjusting cover of the wheel cylinder, Fig. 14.	click of the cover lock spring as the cover is turned. This backing-off of the adjusting cover moves the brake shoe away from the drum to insure proper running clearance of the shoes in the drum.


		Fig. 15—Adjusting 1-1/2-Ton Truck Rear Brakes
		EMERGENCY BRAKE ADJUSTMENT The emergency brake adjustment should be checked each time the hydraulic service brakes are adjusted. When making an emergency brake adjustment the service brakes must be properly adjusted first as a base for adjusting the emergency brakes: 1. Set the emergency brake lever in the fully released position. 2. Loosen the check nuts at the cable ends. 3. Pull the cables out of the conduit by hand until a positive stop it felt. While holding the cable in this position, adjust the check nuts against the clevis plates. Then tighten the check nuts securely. Figure 3 shows the location of the adjusting nuts on the emergency brake cables. BRAKE LININGS Inspection After removal of the brake drums and before disassembly of the shoes from the flange plate, all linings should be inspected for wear, improper alignment causing uneven wear and oil or grease on linings. If any of these conditions exist, it will be necessary to replace or reline the shoes. If in checking the lining it is noticed that they have the appearance of being glazed, this a normal condition with the hard type lining used. Do not use a wire brush or any abrasive on the lining to destroy this glazed surface as it is essential for proper operation.
	Fig. 14—Adjusting Brakes Through Slat In Flange Plate
	Turn the adjusting cover in a clockwise direction looking at the end of the cylinder, until the shoes cause a slight drag on the brake drum. 4. When the "drag" condition is reached, turn the adjusting cover back, the opposite direction. four (4) notches. Repeat this operation on each shoe in each brake. BRAKE SHOE ADJUSTMENT 1-1/2-Ton and C.O.E. Trucks The adjustment of the front brakes on the 1-1/2-ton and C.O.E, trucks is the same as for passenger cars with the exception that the wheel cylinder adjusting covers are backed off five (5) notches instead of four (4). To adjust the rear brakes on these trucks use a 5/8" open end wrench to turn the adjusting pinion. 1. Turn the adjusting pinion in a clockwise direction until the shoe causes a slight drag on the brake drum, as shown in Fig. 15. 2. Turn the adjusting pinion back in the opposite direction 3/4 of a turn to provide running clearance. The backing-off of the adjusting cover, the specified number of notches will be indicated by a faint