PLUG AS 3724391 - Caterpillar

Note: Make sure that all pin bores are lubricated and free of paint.
When you are using hydraulic cylinders and puller studs, always ensure that the rated capacity of the puller stud meets or exceeds the rated capacity of the hydraulic cylinder. If the puller stud does not meet or exceed the rated capacity of the hydraulic cylinder, a sudden failure of the puller stud could occur. The sudden failure of the puller stud could result in personal injury or death.
Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses removed.Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death.Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder.
Illustration 7 g03333807
(1) Torque for grease fitting ... 9.32 4.90 N m (82.49 43.37 lb in) (2) Torque for grease fitting ... 9.32 4.90 N m (82.49 43.37 lb in) (3) Torque for the connector ... 80 to 120 N m (59 to 89 lb ft) (4) Torque for bolt ... 31.5 5.9 N m (278.8 52.2 lb in) (5) Before assembly, lubricate the threads lightly with clean oil. Torque for the head ... 630 N m (465 lb ft) (6) Before assembly, lubricate the threads lightly with clean oil. Torque for the head ... 630 N m (465 lb ft) (7) Tighten socket screw to a torque of ... 31.5 5.9 N m (278.8 52.2 lb in) (8) Before assembly, apply green Loctite 609 to the wiper seal groove (9) Lightly lubricate the sealing lip of the lip type seal with the lubricant that is being sealed.Installation Procedure
Illustration 8 g01166008
Illustration 9 g01166016
Attach a suitable lifting device to boom cylinder (6). The weight of boom cylinder (6) is approximately 62 kg (137 lb). Install boom cylinder (6). Install pin assembly (10) and bolt (9). Position hose assemblies (8) and install clip (7) .
Illustration 10 g01165994
Attach a suitable lifting device to the rod end of boom cylinder (6). The weight of boom cylinder (6) is approximately 62 kg (137 lb). Raise boom cylinder (6) into position. Install pin assembly (5) and bolt (4) .
Illustration 11 g01165991
Connect hose assemblies (3) .
Illustration 12 g01165984
Install guard (2) and bolt (1) .