GENERAL AR 2122740 - Caterpillar

Assembly Procedure
Keep all parts clean from contaminants.Contamination of the hydraulic system with foreign material will reduce the service life of the hydraulic system components.To prevent contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. Cover any disassembled components and clean them properly before assembly.Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination.
Illustration 1 g01211513
Install O-ring seals (16) to plugs (15).
Illustration 2 g01211512
Install plugs (15). Tighten plugs (15) to a torque of 74 5 N m (54 4 lb ft).
Illustration 3 g01211511
Install seat (11) and nut (14) to plug (13). Tighten nut (14) to a torque of 17 3 N m (13 2 lb ft). Install O-ring seal (12 ) to plug (13). Repeat for the remaining plug (13).
Illustration 4 g01211510
Improper assembly of parts that are spring loaded can cause bodily injury.To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Install spool (6), seat (7), stopper (8), spring (9), and plug assembly (10). Tighten plug assembly (10) to a torque of 128 10 N m (94 7 lb ft).
Illustration 5 g01211507
Illustration 6 g01211508
Improper assembly of parts that are spring loaded can cause bodily injury.To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Install spool (2), seat (3), stopper (4), spring (5), and plug assembly (1). Tighten plug assembly (1) to a torque of 128 10 N m (94 7 lb ft). End By:
Install the pressure reducing valve. Refer to Disassembly and Assembly, "Pressure Reducing Valve (Implement and Swing Priority) - Install".