M325B Material Handler Machine Systems Stick Cylinder - Disassemble Caterpillar


Stick Cylinder - Disassemble
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1.1. Disassembly Procedure

Disassembly Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
  Hydraulic Cylinder Repair Stand(1) 
3S-6224 Electric Hydraulic Pump 
8T-0820 Hydraulic Pressure Gauge 
5P-8712 Bushing 
1P-2376 Connecting Coupler 
1P-2377 Dust Plug 
6D-7726 Hose Assembly 
4C-4472  Socket (90 mm) 
3S-6224  Electric Hydraulic Pump 
8T-0820 Hydraulic Pressure Gauge 
5P-8712 Bushing 
1P-2376 Connecting Coupler 
1P-2377 Dust Plug 
6D-7726 Hose Assembly 
6V-0113 Cylinder Group (Double Acting) 
9U-6832 Nut 
4C-9634 Puller Stud 
9U-5338 Adapter 
(1) Refer to Tool Guide, NEHC2004, "Hydraulic Cylinder Repair Stands".

Start By:

  1. Remove the stick cylinder. Refer to Disassembly and Assembly, "Stick Cylinder - Remove".

Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component 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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.

Dispose of all fluids according to local regulations and mandates.


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



    Illustration 1g00607137

  1. Put the stick cylinder on Tooling (A). The weight of the stick cylinder is approximately 441 kg (972 lb).

  2. Remove grease fitting (21) from rod assembly (12).

  3. Remove any debris from the threaded hole for the lubrication line (20).

  4. Remove eight bolts (13) that hold head (19) to cylinder assembly (1).

  5. Remove ring (5), seal assembly (4) and ring (3) from the piston (6).

  6. Remove the ring (26), ring (28), stop (29), and ring (27) from rod assembly (12).

  7. Use Tooling (B) to remove locknut (2) that holds piston (6) to rod assembly (12).

  8. Remove piston (6), stop (8) and ring (7) from the rod assembly (12).

  9. Install eight bolts (13) that hold head (19) to cylinder assembly (1). Pull cylinder assembly (1) and head (19) as a unit from rod assembly (12).

  10. Remove eight bolts (13). Remove the head (19) from the cylinder assembly (1).

  11. Remove seal (9), ring (10), ring (11), bearing (14), seal (18), ring (17), seal (16) and seal (15) from head (19).

  12. Remove seal (22) from the cylinder assembly (1).

  13. Remove seal (24) from the rod assembly (12).

  14. Use Tooling (C) to remove sleeve bearing (23) from cylinder assembly (1). Use Tooling (C) to remove sleeve bearing (25) from rod assembly (12).

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