INSTALLER- 4C5501 - Caterpillar

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Disconnect hose assemblies (3).
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Remove bolt (6), bolt (5), and cover assembly (4). Repeat for other cover assembly (4).
Disconnect tube assembly (9) and remove connector (7). Disconnect tube assembly (10) and remove connector (8).
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Attach a suitable lifting device to tilt cylinder (11). The weight of tilt cylinder (11) is approximately 280 kg (617 lb).
Attach a suitable lifting device to Tooling (A). Use Tooling (A) to remove pin assembly (12).
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Remove pin assembly (13). Remove tilt cylinder (11).
Repeat Step 5 through Step 7 for tilt cylinder (14).Disassembly and Assembly Information
Table 2
Required Tools
Tool Part Number Description Qty
B 127-4904 Hydraulic Cylinder Repair Stand Gp 1
C 1P-1839 Bearing Puller Adapter 1
9U-6832 Nut 1
4C-9634 Puller Stud 1
6V-3175 Double Acting Cylinder 1
350-7768 Electric Hydraulic Pump Gp (115V) 1
350-7769 Electric Hydraulic Pump Gp (230V)
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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.
Specifications are for both the right side and for the left side.
Table 3
Torque Table
Lock Nut Thread Size Torque Specifications
M70 7000 500 N m (5163 369 lb ft)
M80 10500 1050 N m (7744 774 lb ft) (1) Tighten locknut (1) to the specified torque. Refer to Table 3 for the correct torque specifications for locknut (1). (2) Tighten setscrew (2) that retains locknut (1) to a toque of 57 11 N m (42 8 lb ft). (3) Snap ring. (4) Back up ring (5) U-cup seal (6) Buffer seal (7) Sleeve bearing (8) Retaining ring (9) Back up ring (10) Wear ring (11) Wear ring (12) Wear ring (13) Piston seal assembly (14) Wiper seal (15) Use Tooling (C) to remove sleeve bearings (15).Installation Procedure
Table 4
Required Tools
Tool Part Number Description Qty
D 1P-0808 Multipurpose Grease 1
Ensure that the bores in the tilt cylinder, the tilt lever, and the front loader frame are thoroughly clean. Apply Tooling (E) in all pin bores.
Install tilt cylinder (11) and tilt cylinder (14) in the reverse order of removal.
Fill the implement hydraulic system.
Start the machine and run at low idle. Slowly move the tilt cylinders in and out, gradually increasing the length that is moved until the cylinders have been fully extended. This will help remove the air in the cylinders and help to prevent damage.