PRODUCT IMPROVEMENT PROGRAM FOR CHARGING THE FRONT SUSPENSION ON CERTAIN AD55B UNDERGROUND ARTICULATED TRUCKS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR CHARGING THE FRONT SUSPENSION ON CERTAIN AD55B UNDERGROUND ARTICULATED TRUCKS

Usage:

REBE7641-01

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21Oct2011

(Revised 20Jan2012)

U-456

A-375

D-404

O-404

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*Priority*	PRODUCT IMPROVEMENT PROGRAM FOR CHARGING THE FRONT SUSPENSION ON CERTAIN AD55B UNDERGROUND ARTICULATED TRUCKS
7201		PI31935

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NOTE:

This Program must be administered as soon as possible. When reporting the repair, use "PI31935" 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 "PI31935" 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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NOTE:	This Revised Service Letter replaces the 21Oct2011 Service Letter. Changes have been made to the Affected Product.

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COMPLETION DATE	TERMINATION DATE
30Apr2012	31Oct2012

PROBLEM

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The ride quality on certain AD55B Underground Articulated Trucks may be affected due to an incorrectly charged front suspension system.

AFFECTED PRODUCT

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Model	Identification Number
AD55B	JNW00101-00246, 248-254

PARTS NEEDED

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No parts needed for this program

ACTION REQUIRED

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Refer to REHS5299, Special Instructions, "Procedure to Purge and Charge the Front Suspension System on AD55B Underground Articulated Trucks", for the Rework Procedure.

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OWNER NOTIFICATION

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U.S. and Canadian owners will receive the attached Owner Notification.

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%

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NOTE: This is a 2.0-hour job

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PARTS DISPOSITION

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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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COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR CHARGING THE FRONT SUSPENSION ON CERTAIN UNDERGROUND ARTICULATED TRUCKS

MODELS INVOLVED - AD55B Underground Articulated Trucks

Dear Caterpillar Product Owner:

The ride quality on certain AD55B Underground Articulated Trucks may be affected due to an incorrectly charged front suspension system. You will not be charged for the service performed.

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

Please refer the dealer to their Service Letter dated 21Oct2011 when scheduling this service.

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

Caterpillar Inc.

Identification #(s)

Attached to 21Oct2011 Service Letter