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HOSE-SANDBLAST 2809682 - Caterpillar



2809682 HOSE-SANDBLAST Caterpillar parts HOSE
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Alternative (cross code) number:
CA2809682
280-9682
2809682
Caterpillar 2809682 HOSE-SANDBLAST

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For machines with less than 4500 hours, 16.0 hours is allowed for replacement of the boom.
For machine operation hours more than 4500 hours, a new boom is NOT allowed, the boom should be repaired according to the Rework Procedure.
An additional 44.0 hours of labor will be allowed if the boom is repaired according to the Rework Procedure.
If the boom is replaced or repaired, please attach pictures of the failed boom including boom serial number, actual operation hours, and the cracking position when submitting the warranty claim.
100 US Dollars will be allowed for fabrication of the plate by dealer.
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Rework Procedure
General Rework Procedure for the Repair of Cracks at the Rear Baffle Plate of Boom
Refer to RENR8646, Disassembly and Assembly, the removal and installation procedure for the boom group, for 324D and 329D Machines.
Refer to RENR8648, Disassembly and Assembly, the removal and installation procedure for the boom group, for 336D and 340D Machines.
Refer to REHS1841, General Welding Procedures for Welding Requirements, Preparing the Metal for Welding, and Preparing the Machine for Servicing.
Refer to Image1.1.1 for boom weight information.
Image1.1.1
1. Use dye penetrant to inspect the entire area for possible cracks.
2. Use an air carbon arc torch in order to completely gouge out the crack including the inside of fillet weld. The gap must be a minimum of 3mm and should be large enough to install the backup strip. Refer to Images1.2.1 and 1.2.2.
Image1.2.1
Image1.2.2
3. Use a grinder in order to form 25 to 30 degree bevel on the edges of the side plate to form a good weld surface and to ensure weld penetration, and then insert the plate as backup strip. Refer to Image1.3.1.
Image1.3.1
Note A: The backup strip is to be made of mild steel, the thickness is 3mm, and the width is enough to cover the gap made in the side plate of the boom.
Note B: Tack weld wire to the backup strip. Tack weld the backup strip to the side plate and baffle plate and then remove the wire from the backup strip.
Note C: Do not tack weld the backup strip within 50mm (2.0 inch) from the ends of the gouge.
Note D: No crack welding is permitted on track weld beads.
4. Finish the weld. Make additional weld passes in order to fill the groove.
Note: After each weld pass, grind the weld smooth to form a good weld surface and to ensure weld penetration.
5. Grind any convex welds smooth. Add the recommended reinforcement plates refer to following procedure for the Addition of Reinforcement Plates
6. Relieve the stress in all welds by needle peening. A wire brush can be used to clean the welded area.
7. Use Cat authorized paint for painting the welds.
Procedure for the Addition of Reinforcement Plates:
The following Rework Procedure describes the details for the addition of reinforcement plates on the rear baffle plate. Ensure that the cracks in these areas have been repaired before completing the following procedure.
1. Fabricate a reinforcement plate that can be


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