PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPAIRING THE MAIN BOOM ON CERTAIN 579C AND 2484C KNUCKLE BOOM LOADERS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPAIRING THE MAIN BOOM ON CERTAIN 579C AND 2484C KNUCKLE BOOM LOADERS

Usage:

TEBE5077-00

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24Aug2016

U-434

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Priority	PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPAIRING THE MAIN BOOM ON CERTAIN 579C AND 2484C KNUCKLE BOOM LOADERS
6501 0679		PI32673

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NOTE:

Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.

NOTE:

This Program must be administered as soon as possible. When reporting the repair, use "PI32673" as the Part Number and "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. Exception: If the repair is done after failure, use "PI32673" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

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NOTE:

The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.

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COMPLETION DATE	TERMINATION DATE
28Feb2017	31Aug2017

PROBLEM

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The main boom needs to be inspected and possibly repaired on certain 579C and 2484C Knuckleboom Loaders. The existing main boom can crack.

AFFECTED PRODUCT

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Model	Identification Number
2484C	KAZ00251-00264 KB700300-00309
579C	KAX00250-00295 KB500101-00132

PARTS NEEDED

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No parts needed for this program

ACTION REQUIRED

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Note: Ensure that all safety information, warnings, and instructions are read and understood before any operation or any maintenance procedures are performed. Refer to the Operation and Maintenance Manual "Safety Section".

1. Park the machine with the boom resting on the ground. Depending on how low the boom is you may need a step ladder to inspect the upper welds at the stick end.

2. Clean all welds at both ends where the castings meet the spar tube so that any cracks will be clearly visible. Refer to Images1 and 2 for the inspection locations.

- If the boom is found to be cracked, the machine must be taken out of service immediately. Attached are images of cracked weld joints for reference. Refer to Images3 and 4. Repair the boom according to M0075680, Special Instruction, "Weld Rework Procedure for Boom Casting to Plate Joints on Certain Knuckleboom Loaders".

- If the boom is NOT found to be cracked, no further rework is required.

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Image1

Image2

Image3

Image4

OWNER NOTIFICATION

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Owners in the following countries will receive the attached Owner Notification:
US
Canada

SERVICE CLAIM ALLOWANCES

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Caterpillar		Dealer Suggested		Customer Suggested
Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
100%	100%	0%	0%	0%	0%

NOTE: This is a 1.0-hour job
Note: 1.0 hours is allowed for inspection only of the boom. Note: An additional 36.0 hours of labor, $1500 US Dollars in transportation fees, $1800 in machine loaner expenses, and $1000 in costs to paint the main boom once repaired.

PARTS DISPOSITION

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.

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EXAMPLE COPY OF OWNER NOTIFICATION

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPAIRING THE MAIN BOOM

MODELS INVOLVED - CERTAIN 579C AND 2484C KNUCKLE BOOM LOADERS

Dear Cat Product Owner:

The main boom (main boom is referenced as the boom closest to the operators station) needs to be inspected on the products listed below. The existing main boom can crack. As a daily machine walk around the operator must be inspecting all structures of the machine, including the main boom, and informing the dealer of issues found as stated in the machine's Operation and Maintenance Manual. You will not be charged for the service performed.

Contact your local Cat dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service.

If you are no longer the owner of this product, please contact your local Cat dealer so that our records can be updated. Please refer the dealer to their Service Letter dated 24Aug2016 when scheduling this service.

We regret the inconvenience this may cause you, and urge you to have this service performed as soon as possible to prevent unscheduled downtime.

Caterpillar Inc.

Identification #(s)

Attached to 24Aug2016 Service Letter