ELBOW AS 3535108 - Caterpillar

To prevent possible personal injury, make sure all pressure in the air system is zero before any air lines are disconnected.
Put identification marks on all hoses for correct assembly at installation.3. Disconnect air line (2) from valve (1).4. Disconnect the three tees from the valve.5. Disconnect the five hose assemblies from valve (1).6. Remove the bolts that hold valve (1) in position, and remove the valve. The following steps are for installation of the brake control valve.7. Put valve (1) in position, and install the bolts that hold it.8. Connect the five hose assemblies to the valve.9. Connect the three tees to valve (1).10. Connect air line (2) to valve (1).11. Remove the body retaining cable, and lower the truck body.Disassemble And Assemble Brake Control Valve
Start By:a. remove brake control valve1. Remove the fittings from the brake control valve if necessary. 2. Remove bolts (1), retainer (5), plate (4), and diaphragm (3) from body (13).3. Remove piston (2) from spool (8).4. Remove adapter (7) from body (13). Remove the lip-type seal and O-ring seal from adapter (7).5. Remove spool (8) from body (13). Remove spring (11) and shims (9) from spool (8).6. Remove plug (10) from body (13). Remove the O-ring from plug (10).7. Remove relief valve (6) and check valve (12) from body (13). 8. Disassemble relief valve (6) as follows:a. Remove O-ring seals (14) and (15) from body (16).b. Remove plug (22) from body (16). Remove shims (20) and O-ring seal (21) from plug (22).c. Remove spring (19), dowel (18), and valve (17) from body (16). 9. Disassemble check valve (12) as follows:a. Remove O-ring seals (23) and (24) from body (25).b. Remove plug (30) from body (25). Remove O-ring seal (29) from plug (30).c. Remove spring (28), dowel (27), and valve (26) from body (25). The following steps are for assembly of the brake control valve.10. Assemble check valve (12) as follows:a. Install valve (26), dowel (27), and spring (28) in body (25).b. Install O-ring seal (29) on plug (30). Install plug (30) in body (25).c. Install O-ring seals (23) and (24) on body (25).11. Assemble relief valve (6) as follows:a. Install valve (17), dowel (18), and spring (19) in body (16).b. Install O-ring seal (21) on plug (22). Install shims (20) in plug (22). Install plug (22) in body (16).c. Install O-ring seals (14) and (15) on body (16).12. Install relief valve (6) and check valve (12) in body (13).13. Install the O-ring on plug (10). Install plug (10) in body (13).14. Install shims (9) and spring (11) in spool (8). Install spool (8) in body (13).15. Install the lip-type seal in adapter (7) as shown, and install the O-ring seal in adapter (7). Install adapter (7) on body (13).16. Install piston (2) on spool (8).17. Install diaphragm (3), plate (4), retainer (5), and bolts (1) on body (13).18. If the fittings were removed from the brake control valve, install the fittings in the brake control valve.End By:a. install brake control valve