259D Skid Steer Loaders Machine Systems – Tilt Cylinder – Remove and Install

Removal Procedure

Start By:

  1. Remove the quick coupler. Refer to Disassembly and Assembly, "Quick Coupler - Remove and Install".
  2. Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".

Note: Put identification marks on all hoses, on all hose assemblies, on all wires, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss, and this helps to keep contaminants from entering the system.

Note: Cleanliness is an important factor. Before you begin the removal procedure, the exterior of the components should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.


NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.

Dispose of all fluids according to local regulations and mandates.


------ WARNING! ------

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.

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------ WARNING! ------

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.

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    Illustration 1g01346742

  1. Disconnect hose assemblies (3). Remove pin assembly (1) and tilt cylinder (2) .

Disassembly and Assembly Information

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     127-4904     Repair Stand     1    
B     195-4609     Seal Pick     1    
C     9S-3263     Thread Lock Compound     -    
D     5P-0960     Molybdenum Grease     -    
E     292-9216     Spanner wrench     1    


NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.

Dispose of all fluids according to local regulations and mandates.


------ WARNING! ------

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 2g01345557

Note: Lubricate the seals with the lubricant that is being sealed.

(1) Torque for the piston is 525 ± 25 N·m (387 ± 18 lb ft).

(2) Use Tooling (E) to tighten the gland. Torque for the gland is 325 ± 25 N·m (240 ± 18 lb ft).

(3) Apply Tooling (C) to the threads of the setscrew. Torque for the setscrew is 23 ± 3 N·m (17 ± 2 lb ft).

(4) Lubricate bores with Tooling (D) prior to installation.

Note: If necessary, the rod eye can be machined in order to install a bearing. The new bore size should be 50.780 ± .025 mm (1.999 ± 0.001 inch). The bearing part number is 3K-2151.

Installation Procedure

Note: Cleanliness is an important factor. Before assembly, thoroughly clean all parts in cleaning fluid. Allow the parts to air dry. Do not use wiping cloths or rags to dry parts. Lint may be deposited on the parts which may cause trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement. Dirt and other contaminants can damage the precision component. Perform assembly procedures on a clean work surface. Keep components covered and protected at all times.

Note: Check the O-ring seals, the gaskets, and the seals for wear or for damage. Replace the components, if necessary.


NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.

Dispose of all fluids according to local regulations and mandates.





    Illustration 3g01346742

  1. Position tilt cylinder (2) and install pin assembly (1). Connect hose assemblies (3) .

End By: Install the quick coupler. Refer to Disassembly and Assembly, "Quick Coupler - Remove and Install".

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