GASKET 3H5193 - Caterpillar

Oil that is hot and under high pressure can cause injury. To prevent injury, all pressure in the hydraulic system must be release before any hydraulic lines are disconnected. To release the pressure in the hydraulic system, stop the engine, and move implement control levers to all positions. Let the hydraulic oil become cool before work is done on the hydraulic system.
Be sure to clean all fittings and oil line connections before the lines are disconnected. Install plugs in all openings to keep dirt out of the oil lines and valves. Put identification marks on the lines,hoses and wiring assemblies to assist during installation.
Place identification marks on all lines, hoses, wires and tubes for installation purposes. Cap and plug all lines, hoses and tubes to prevent fluid loss and contaminants from entering the system.1. Drain the hydraulic tank. The capacity is approximately 83 liters (U.S. Gal). 2. Loosen clamp (1) and disconnect hose assembly (2) from block assembly. 3. Remove eight nuts (6), gasket (5) (not shown) and exhaust elbow (4) from the exhaust manifold. 4. Loosen clamp (7) and disconnect hose (8). Remove bolt (9) and clip (10) and reposition hose (8) to the side.5. Loosen clamp (11) and disconnect hose (12). Remove bolt (15) and clip (16) and reposition hose (12) to the side.6. Loosen clamp (13) and disconnect hose (14). Reposition hose (14) to the side. 7. Cut straps (22) and disconnect wire connectors (17), (18), (19), (20) and (21). 8. Remove cotter and pin (24) and disconnect rod end (25) from lever (23).9. Loosen nut (27) and reposition cable group (26) to the side. 10. Disconnect two lube lines (28) and clips (not shown). 11. Disconnect wire connector (29). Disconnect hose assemblies (31) and (32) and tube assembly (30). 12. Remove two bolts (33), washers and nuts. 13. Remove clip (34) and remove tie wraps (35). 14. Disconnect tube assembly (36) from hydraulic tank (38) by removing four bolts (37) and washers.15. Remove bolt (39), washer and spacer (not shown). Reposition tube assembly (36) towards the center of the tractor. 16. Attach tooling (A) to firewall (40) as shown. 17. Remove eight bolts (41) nuts and washers (four on each side). Using a hoist and one additional person, carefully lift the firewall off the machine. Make sure that all wires have been identified and properly disconnected. The weight of the firewall is 957 kg (435 lb). 18. Remove bolt (42) and washer, and reposition hose (44) and clip (43) to the side. 19. Remove nut (46) and washer. Disconnect wires (45) and (49). Install nut (46) and washer to hold remaining wires.20. Remove nut (48) and washer. Disconnect wire (47) and install nut (48) and washer to hold remaining wires.21. Loosen clamp (49) and disconnect hose (50). Disconnect tubing assembly (51). Remove bolt (53), washer and clip (52). Reposition wires (45)and (47), hose (50) and tube (51) to the side. 22. Remove four bolts (54), washers and two clips (55). Remove bolt (56), washer