PLUG AS 3260319 - Caterpillar

Start By:
Connect the steering frame lock.
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
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 1 g06237792
Position arch (1) onto Tooling (A), as shown.
Release the system pressure.
Illustration 2 g06237797
Remove five bolts (3) and guard (2).
Illustration 3 g06237803
Remove bolt (5).
Disconnect hose assemblies (4) and (6).
Illustration 4 g06237815
Attach Tooling (B) and a suitable lifting device to arch cylinder (7). The weight of arch cylinder (7) is approximately 65 kg (140 lb).
Illustration 5 g06237818
Illustration 6 g06237822
Remove bolt (9) and pin assembly (8).
Remove bolt (10) and pin assembly (11).
Remove arch cylinder (7).
Illustration 7 g06237824
Remove seals (12).
Use Tooling (C) to remove bearing (13).Disassembly and Assembly Information
Table 2
Required Tools
Tool Part Number Part Description Qty
D 152-4249 Hydraulic Cylinder Repair Stand Gp 1
E - Loctite 648 -
F 452-6011 Grease -
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 8 g01271486 (1) Apply Tooling (F) to the threads and tighten to a torque of 2100 250 N m (1549 184 lb ft). (2) Lubricate the sealing lips with the lubricant that is being sealed. (3) Apply Tooling (E) to the seal groove prior to assembly. (4) Apply Tooling (F) to the threads and tighten to a torque of 600 130 N m (440 95 lb ft).Installation Procedure
Install arch cylinder (7) in the reverse order of removal.