PLATE-COVER 3844078 - Caterpillar

1. Disconnect wire connectors (2) to valve (1).2. Remove four hex head bolts (3).3. Remove valve (1). Install in the reverse order.End By:a. install seat and mounting plateDisassemble Steering Clutch & Brake Control Valve (8ZR)
Start By:a. remove steering clutch and brake control valve 1. Remove two wire straps (2).2. Remove four bolts (1) and remove plate (3). 3. Remove manifold (4) and washers (5). 4. Remove nut (9), coil (8) and stem (7) from manifold (4).5. Remove O-rings (10) from stem (7).6. Remove O-ring (6) from manifold (4). 7. Remove two dowels (11) and plate (12). 8. Remove O-ring (14) from valve (15).9. Remove bolts (13) and remove valve (15). 10. Remove O-ring seal (16) from valve (15).11. Remove bolts (17) and remove plate (18) from valve (15). 12. Remove four O-ring seals (19).13. Remove two springs (20) and (21) from each bore. 14. Remove four pistons (22). 15. Remove four plugs (26) and seals (53).16. Remove springs (24) and spools (23). Large track type tractors will have a temperature in place of one of plugs (26). 17. Remove plate (27) from manifold (28).18. Remove dowels (30).19. If necessary, remove plugs (29) from plate (27). Plugs (29) are not interchangeable. Do not mix. 20. Remove O-ring seal (31) from manifold (28).21. Remove nut (33), spacer (32) and coil (34).22. Remove stem (35).23. Remove O-ring seals (36) from stem (35). Repeat this procedure for the remaining solenoid assemblies. 24. Remove two dowel pins (37) from manifold (28).25. Install M16 x 2.0 Bolt (38) finger tight in spool assembly (39) and remove two spool assemblies. Remove spool assembly by pulling bolt straight out. Do not pry bolt up or down.Assemble Steering Clutch & Brake Control Valve (8ZR)
1. Install M16 x 2.0 bolt (38) in spool assembly (39). Align slot on spool assembly (39) with the holes for dowel pins (37). Install dowel pins (37) and remove bolt (38). 2. Install O-ring seals (36) on stem (35).3. Install stems (35) and tighten them to a torque of 50 5 N*m (37 4 lb ft).4. Install solenoids (34), spacers (32) and nuts (33). Tighten nuts (33) to a torque of 9.5 1.5 N*m (84 13 lb in). 5. Install plugs and seals (29) in plate (27). Install plugs in the same location from which they were removed. Tighten to the torque of 0.6 N*m (5 lb in).6. Install dowels (30) and install plate (27) on manifold (28) as shown. 7. Install spools (23) and springs (24) in valve (15).8. Install O-ring (25) on plugs (26) and install plugs (26). Tighten plugs (26) to a torque of 50 10 N*m (37 7 lb ft). 9. Install pistons (22) in valve (15). 10. Install springs (20) and (21) in valve (15).11. Install O-ring seals (19). 12. Install plate (18) and bolts (17).13. Install O-ring seal (16). 14. Install valve (15) on manifold (28) and plate (27).15. Install bolts (13). Tighten bolts (13) to a torque of 30