320D2 GC Excavator Machine Systems Bucket Cylinder - Remove and Install Caterpillar


Bucket Cylinder - Remove and Install
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1.1. Removal Procedure
2.1. Disassembly and Assembly Information
3.1. Installation Procedure

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
3S-6224  Electric Hydraulic Pump Gp 
9U-5266 Sleeve 
9U-5340 Sleeve Extension 
6V-3175 Double Acting Cylinder 
9U-5346 Nut 
137-8460 Puller Stud 

Start By:

  1. Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".

------ 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.



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 1g01215853

  1. Attach a suitable lifting device to the rod end of bucket cylinder (1). The weight of bucket cylinder (1) is approximately 238 kg (525 lb). Position suitable blocking under the bucket linkage.

  2. Attach a suitable lifting device to Tooling (A). The weight of Tooling (A) is approximately 65 kg (140 lb). Remove the nut and bolt (2). Use Tooling (A) in order to remove pin (3). The combined weight of Tooling (A) and pin (3) is approximately 90 kg (200 lb). Remove any shims that are present.


    Illustration 2g01215868

  3. Raise the rod end of bucket cylinder (1) until bucket cylinder (1) is horizontal. Attach a suitable lifting device to the head end of bucket cylinder (1). Disconnect hose assemblies (4). Remove bolt (6) and remove pin assembly (5). Remove bucket cylinder (1).

Disassembly and Assembly Information

Table 2
Required Tools 
Tool  Part Number  Part Description  Qty 
125-0079  Hydraulic Cylinder Repair Stand 
152-4249 Hydraulic Cylinder Repair Stand (1) 
4C-4032  Bearing Mount Compound 
1P-0520  Driver Gp 
250-6597  Cylinder Wash Tank Gp 
9U-6803  Hydraulic Cylinder Tool Gp 
5P-0960  Grease Cartridge 
3S-6224  Electric Hydraulic Pump Gp 
9U-5266 Sleeve 
9U-5340 Sleeve Extension 
6V-3175 Double Acting Cylinder 
9U-5346 Nut 
137-8460 Puller Stud 
(1) CE Compliant

Note: Tooling (H) is used for the removal of the bearings that are located at the rod end and the head end of the bucket cylinder.

------ 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.



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.




Illustration 3g00822205

(1) Torque for locknut ... 7600 ± 380 N·m (5605 ± 280 lb ft)

(2) Lubricate the seals slightly with the lubricant that is being sealed.

(3) Torque for twelve bolts ... 367 ± 55 N·m (270 ± 41 lb ft)

(4) Torque for setscrew ... 57 ± 10 N·m (42 ± 7 lb ft)

Apply Tooling (B) to the wiper seal groove prior to assembly.

Torque for fittings 9 ± 5 N·m (80 ± 45 lb in)

Installation Procedure

Table 3
Required Tools 
Tool  Part Number  Part Description  Qty 
5P-0960  Grease Cartridge 
4C-9485  Pin Driver Cap 


    Illustration 4g01215868

  1. Attach a suitable lifting device to bucket cylinder (1). The weight of bucket cylinder (1) is approximately 238 kg (525 lb). Position bucket cylinder (1) onto the machine. Make sure that the grease fittings that are located at the head end and the rod end of bucket cylinder (1) are facing away from the stick.

  2. Install a shim on each side of the head end of bucket cylinder (1). Apply Tooling (J) to pin assembly (5).


    Illustration 5g01217055

  3. Use the suitable lifting device in order to position the rod end of bucket cylinder (1). Install a shim on both sides of the power link. Install the shims between the power link and the idler links. Apply Tooling (H) to pin (3). Use two people and Tooling (J) in order to install pin (3). The weight of pin (3) is approximately 27 kg (60 lb).


    Illustration 6g01217084


    Illustration 7g00356648

  4. Install bolt (2) and the nut that secures pin (3). Tighten the outside nut until the outside nut is 0.50 mm (0.019 inch) beyond the end of bolt (2). Tighten the inside nut against the outside nut to a torque of 325 ± 40 N·m (240 ± 30 lb ft).

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