WASHER-THRUST 1C3876 - Caterpillar

Illustration 2 g01215303
Attach a suitable lifting device to both ends of stick cylinder (1). The weight of stick cylinder (1) is approximately 308 kg (680 lb).
Disconnect hose assemblies (4). Remove bolt (3) and pin assembly (2). Remove bolt (5) and pin assembly (6).
Remove stick cylinder (1).Disassembly and Assembly Information
Table 1
Required Tools
Tool Part Number Part Description Qty
A 127-4904 Hydraulic Cylinder Repair Stand Gp 1
1P-0520 Driver Gp 1
9U-7868 Spanner Wrench 1
127-8064 Adapter Plate Gp 1
195-4609 Seal Pick 1
B 4C-4032 Bearing Mount Compound 1
C 5P-0960 Grease Cartridge 1
D 1P-1837 Bearing Puller Adapter 1
4C-9633 Puller Stud 1
1A-1935 Full Nut 1
3S-6224 Electric Hydraulic Pump Gp 1
6V-3175 Double Acting Cylinder 1
6V-2098 Press Sleeve 1 Note: Tooling (D) is used for the removal of the bearings that are at the head end and the rod end of the cylinder.
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 3 g06243154Note: Apply a light film of hydraulic oil to all components before assembly.Note: Setscrew (19) and ball (20) must be removed to remove the piston.
Apply Tooling (B) to seal (1) prior to assembly.
Apply clean hydraulic oil on the lip of seal (1), seal (2), and seal (3).
Apply Tooling (C) to the threads of head (5).
Lubricate the threads of rod assembly (7) with Tooling (C).
Tighten piston (14). For cylinders with a 120 mm (4.7 inch) bore, tighten the piston to a torque of 6550 655 N m (4831 483 lb ft). For cylinders with a 130 mm (5.1 inch) bore, tighten the piston to a torque of 9500 950 N m (7007 701 lb ft).
Install ball (20) and set screw (19). Tighten set screw (19) to a torque of 57 10 N m (42 7 lb ft).
Lubricate the outside of piston (6) with Tooling (C).
Tighten bolts (4). For cylinders with a 120 mm (4.7 inch) bore, tighten the bolts (4) to a torque of 267 45 N m (197 33 lb ft). For cylinders with a 130 mm (5.1 inch) bore, tighten the bolts (4) to a torque of 367 65 N m (270 48 lb ft).Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
E 5P-0960 Grease Cartridge 1
Illustration 4 g01215300
Illustration 5 g01215303
Attach a suitable lifting device to both ends of stick cylinder (1). The weight of stick cylinder (1) is approximately 308 kg (680 lb). Position stick cylinder (1) onto the machine.
Apply Tooling (E) to pin assembly (2). Install pin assembly (2) and bolt (3). Apply Tooling (E) to pin assembly (6). Install pin assembly (6) and bolt (5).
Connect hose assemblies (4).
Fill the hydraulic oil tank. Refer to Operation and Maintenance Manual, "Hydraulic Oil Level - Check".