FRAME GP 1657694 - Caterpillar

C. Brake Adjusting Procedure-Clark & Rockwell Axles (300A, 304A, 320A, 510A, 500A, 600A)
1. Rotate brake cams in direction indicated until brake lining drags on drum.2. Back off brake cam just enough to relieve drag.3. Adjust opposite brake shoes in same manner.4. Make operational check of brakes to assure proper application and release.
For further information refer to appropriate repair manual.
D. Brake Adjusting Procedure - Napco Axles (300A, 303A, 304A, 320A, 500A, 600A, 450A)
1. Adjust one shoe completely before advancing to the next shoe.2. Place a 5/8" wrench on adjusting bolt and turn clockwise to tighten. Turn until the lining drags on the drum.3. While rotating the drum forward, rotate the wrench in the opposite direction (counter clockwise) until drag is relieved.4. Road test vehicle to assure proper application and release.
For further information refer to appropriate repair manual.
E. Disc Brake Adjustment, Mechanical (2-84 only)
1. Place a .012" (.30MM) feeler gauge between lining and disc. Apply brake. Feeler gauge should remove with relative ease.2. If gap is too tight or too loose the brake should be adjusted.3. To adjust brake remove cable from lever.4. Loosen set screw (A) and, with a .012" (.30MM) feeler gauge between lining and disc, screw in brake module (B) until feeler gauge is tight between lining and disc; thru back off module until feeler gauge is free and slot lines up with set screw.5. Tighten set screw and replace brake cable.F. Disc Brake Adjustment, Hydraulic (400A, 404A, 404B, 410A, 420A, 420B, 420C, 700A)
1. If the caliper brake head has been removed to replace linings or for any other reason, it should be adjusted when replaced.2. To adjust brake head lower mounting bolt (A) should be loose enough to allow the brake head to float.3. If bolt is too tight damage to brake or disc may result.G. Parking Brake Adjustment, Mechanical (400A, 404B, 410A, 420A, 420B, 420C, 500A, 510A, 600A, 450A, 700A)
1. If parking brake is rubbing or too loose, at points (A & B) loosen jam nut (C).2. Make appropriate adjustment using nut (D). Once correct adjustment is made tighten nut (D).
When brake is correctly adjusted a .020" (.51MM) feeler gauge should slip between pad and drum with relative ease when brake is released. With brake applied the feeler gauge should remove with difficulty.
3. If parking brake is rubbing, or too loose, at points (E & F) turn bolt (G) until correct adjustment is obtained.4. The other adjustment on the parking brake is made on the lever (H). Lever tension can be increased or decreased by turning knob (I).H. Accumulator Charge Test (2-66 only)
1. Park unit on a level surface with engine OFF.2. Attach suitable towing vehicle to unit.3. Actuate towing valve (located by accumulator valve) by pulling lever down and locking in position.
In actuating the towing valve the braking action of the propel system on the unit is being disengaged. If towing valve isn't actuated damage to the propel system may occur.
4. Selector valve (A) is pushed in, selector valve (B) is pulled out.5. VERY