PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE GRAB ARM CYLINDER PISTONS ON CERTAIN HF 201 AND HF221 FELLING HEADS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE GRAB ARM CYLINDER PISTONS ON CERTAIN HF 201 AND HF221 FELLING HEADS

Usage:

REBE6246-00

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10Nov2010

U-451

A-369

D-395

O-394

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*Priority*	PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE GRAB ARM CYLINDER PISTONS ON CERTAIN HF 201 AND HF221 FELLING HEADS
5555 7562 6319		PI31818

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NOTE:

This Program must be administered as soon as possible. When reporting the repair, use "PI31818" 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 "PI31818" 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
31May2011	30Nov2011

PROBLEM

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The grab arm cylinder piston needs to be replaced on certain HF201 and HF221 Felling Heads. The existing piston can separate causing debris to enter the hydraulic system.

AFFECTED PRODUCT

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Model	Identification Number
HF201	PAM00102-00103, 111, 114-115, 117-129
HF221	PAJ00328-00332

PARTS NEEDED

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Qty	Part Number	Description
2	3468963	NUT-LOCK
2	3507786	SEAL-PISTON
2	3508650	SEAL-HEAD
2	3642559	PISTON
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 40% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.

ACTION REQUIRED

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Refer to Special Instruction, REHS5405, 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%

NOTE: This is a 3.0-hour job

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

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE GRAB ARM CYLINDER PISTONS

MODELS INVOLVED - HF201 and HF221 Felling Heads

Dear Caterpillar Product Owner:

The grab arm cylinder piston needs to be replaced on the products listed below. The existing piston can separate causing debris to enter the hydraulic 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 10Nov2010 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 10Nov2010 Service Letter