CYLINDER BLOCK AS 4P2098 - Caterpillar

7. Make sure hose (7) is in position, and install the four clamps that hold it.8. Connect hose assembly (6) to the brake assembly.9. Put the O-ring seal in place in tube assembly (8), and connect the tube assembly to the brake assembly.10. Fill the brake system with oil to the correct level. See the Maintenance Guide.11. After installation of the rear wheel bearings and Duo-Cone Seals, bleed the air from the brake system. See Testing And Adjusting for the correct procedure to bleed the brakes.End By:a. install rear wheel bearings and Duo-Cone seals **This operation is in the 785B Truck Power Train Disassembly And Assembly manual.Disassemble Rear Service & Parking Brakes
Start By:a. remove rear service and parking brakes 1. Put the brake assembly on blocks with the anchor up as shown.2. Remove bolts (1) and the washers that hold the anchor in place.3. Loosen nuts (2) one half to one turn at a time to release the compression spring tension. 4. Fasten a hoist and tooling (A) to anchor (3), and remove the anchor from the brake assembly. The weight of the anchor is 403 kg (888 lb).5. Remove nuts (2) from the anchor. 6. Turn anchor assembly (3) over with the service brake piston facing up as shown.7. Install two 3/8" - 16 NC forcing screws (5) in service brake piston (4). Tighten the forcing screws evenly to compress the guide springs. 8. Use needle nose pliers, and install cotter pin (7) in guides (6) to hold them in place when the forcing screws are removed.9. Remove forcing screws (5) from the service brake piston. 10. Use a soft hammer to push service brake piston (4) down, and remove pins (8) from guides (6). 11. Fasten a hoist and two 3/8" - 16 NC forged eyebolts (9) to service brake piston (4). Remove the piston from the anchor. The weight of the service brake piston is 85 kg (187 lb). 12. Remove two seals (10) and two seals (11) from service brake piston (4). 13. Loosen nuts (12) one half to one turn at a time to release the compression spring tension. 14. Fasten a hoist and two 3/8" - 16 NC forged eyebolts to parking brake piston (14). Remove the parking brake piston and housing (13) from the brake assembly. The weight of the parking brake piston and housing is 112 kg (247 lb).15. Remove nuts (12) from housing (13). 16. Put the parking brake piston and housing (13) in position on tooling (B), and separate the housing and parking brake piston (14). 17. Remove two seals (15) and two seals (16) from housing (13). 18. Remove seal (17) from the parking brake piston.19. Use tool (C) to compress the guide spring. Remove cotter pin (7), guide (6) and the guide spring from the parking brake piston. 20. Remove two O-ring seals (18) from the anchor. There are four springs (19) at location (X) which do not have inner springs. Put identification marks on the