Removal Procedure
Start By:
- Open the delimbing knives. Open the feed roller arms.
- Prepare the machine for disassembly. Refer to Disassembly and Assembly, "Preparation for Disassembly".
- Remove the cover over the hydraulic control valve. Refer to Operation and Maintenance, "Removing the Hydraulic Control Valve Cover".
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.
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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 attachments have been lowered, 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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| NOTICE |
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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. |
Note: Put identification 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.
Note: The HH65 Harvester Head is shown in this procedure. Other models are similar.
- Remove cover (1 ) from the front of the harvester head. Remove cover (2 ) from the front of the harvester head.
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| Illustration 1 | g00639862 |
- Remove bolts (4) from valve plate (3). Lower valve plate (3) .
Note: Valve plate (3) is hinged on the bottom. It is not necessary to remove any hoses in order to lower valve plate (3) .
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| Illustration 2 | g00639835 |
- Disconnect hydraulic hose assemblies (5) and (6) from measuring arm cylinder (7) .
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| Illustration 3 | g00639832 |
- Remove the nut and the pivot pin from the tube end of measuring arm cylinder (7) .
- Remove the nut from pivot pin (9). Support measuring arm cylinder (7). Remove pin (9) .
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| Illustration 4 | g00639833 |
- Remove measuring arm cylinder (7) from the harvester head. The weight of the measuring arm cylinder is 0.5 kg (1 lb).