Document jB7aYjEY7zq8ZROB4m92oGNrk

28 2. Check fluid supply in master cyl inder and fill if necessary. 3. If pedal has a spongy or springy action the fluid lines should be bled. MAJOR ADJUSTMENT 1. Remove front wheel and hub as semblies. The use of a drum gauge is employed at this point. 2. Loosen anchor pin lock nuts and examine arrow heads of both upper and lower anchor bolts "B". The high side of the eccentric anchor is indicated by an arrow head. These arrows should point towards the adjacent wheel cylin der before starting the anchor adjust ment. 3. From this anchor setting turn anchor pin so as to decrease clearance 1 Vi" from the anchor end of the lining to .005" and lock anchor pin lock nut. Turning anchor pins on the left side of the car clockwise and on the right hand side of the car counterclockwise de creases clearance. 4. Adjust cam "A" on each shoe to .010" clearance at V/z" from the cylin der end of the lining. 5. Recheck clearance at the anchor end and readjust anchor if necessary. 6. Install wheel and hub assemblies. New grease seals are recommended. 7. In bleeding these front wheel brakes, bleed the top cylinders first and then bleed the lower cylinders. FORD Hydraulic Brakes 1939-48 ADJUSTING WM 8, ADJUSTING .CAM I forward shoe USE standard' AMERICAN BRAKEBLOK. ANCHOR PINS C Figure 25 1939-1942 Ford Hydraulic Brake Showing Mechanical Operation of Rear Wheel Brakes for Parking Ford cars are equipped with hydraul ic brakes which are very similar to the Lockheed brakes just described. A left rear 1939-42 Ford brake assembly is illustrated in Figure 25 and shows the mechanism which operates the shoes through the hand brake lever for park ing or emergency purposes. ADJUSTMENTS The niajor and minor adjustments on Ford hydraulic brakes through 1942 models are made in the same manner as on the Lockheed brake described on page 24. Figure 20. The 1946-48 Ford brakes have brake shoes which are self centering at the anchor pins and therefore there is no anchor pin adjustment to be made on these brakes. SERVICE HELPS The hand brake lever on all recent Ford passenger car and light trucks operates the brake shoes in the two rear wheels for parking or emergency pur poses. When making service brake ad justments, it is advisable to disconnect the hand brake cables. In order to adjust the hand brake on these vehicles, proceed as follows: 1. Release the hand brake lever com pletely and then place it in the first notch. I 2. Apply a pressure of about 30 pounds to the brake pedal and hold at approximately this pressure throughout the hand brake adjustment. 3. Take all slack out of the hand brake cables and adjust conduits so that cables are exactly the right length. 4. Remove the pressure from the brake pedal and release the hand brake lever completely and check the rear wheels to make sure they do not drag. The 154-ton Ford trucks have sepa rate brake bands located in the rear wheels and operated through the hand brake lever for parking or emergency purposes. The hand brakes on the 1 Yzton trucks are adjusted as follows: 1. Release hand brake lever com pletely. 2. Adjust brake rods so that an equal drag is produced at each rear wheel when hand brake is applied. American Brakeblok, as well as most other brake lining manufacturers, rec ommend the use of a fairly high friction lining on both shoes of the Ford hy draulic brakes. In addition to material in rolls, American Brakeblok also furnishes brake lining segments in boxed car sets especially prepared for these brakes. ILnUPutffiUflCLLCUn Self-Centering Hydraulic Brakes Self-Adjusting and Non-Self-Adjusting WHEEL CYLINDER ASSEMBLY SHOE RETURN SPRING FORWARD SHOE ECCENTRIC ADJUSTING LEVER CONTACT PLUG PRESSURE SPRING CONTACT PLUG -C" WASHER ECCENTRIC PIN WEDGE GUIDE ADJUSTING WEDGE WEDGE TENSION SPRING ANCHOR RETURN SPRING ANCHOR BLOCK Figure 26 Lockheed Self-Adjusting Hydraulic Brake BRAKE BACKING PLATE In this type brake, conventional brake shoe anchor pins have been elimi nated; The lower ends of the shoes butt against a solid block rigidly attached to the backing plate. This block is ma chined so that its sides are aligned ra-