PRODUCT SUPPORT PROGRAM FOR REWORKING THE AIR INTAKE HOSE CONNECTIONS ON CERTAIN 257B MULTI TERRAIN LOADERS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REWORKING THE AIR INTAKE HOSE CONNECTIONS ON CERTAIN 257B MULTI TERRAIN LOADERS

Usage:

REBE4381-00

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30Sep2008

U-502

A-415

D-423

O-462

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*Before/After*	PRODUCT SUPPORT PROGRAM FOR REWORKING THE AIR INTAKE HOSE CONNECTIONS ON CERTAIN 257B MULTI TERRAIN LOADERS
1071		PS42799

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NOTE:

This Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS42799" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "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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TERMINATION DATE

30Sep2010

PROBLEM

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The clamps used to secure the air intake to the air cleaner outlet and the turbo inlet may be loose or incorrectly positioned resulting in insufficient clamping force on certain 257B Multi Terrain Loaders. Severe engine damage can occur as a result of the air intake hose coming loose during machine operation.

AFFECTED PRODUCT

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Model	Identification Number
257B	SLK07300-07905, 8300-9134

PARTS NEEDED

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Qty	Part Number	Description
1	8T6703	CLAMP-BAND
1	1440367	CLAMP-BAND
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 9% 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 the attached Rework Procedure.

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SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-1500 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 0.5-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.

Rework Procedure

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1. Remove and discard the worm gear-type hose clamps from both ends of the air intake hose between the air cleaner assembly outlet and the turbo inlet.

2. Loosely fit an 8T-6703 Clamp to the turbo end of the air intake hose and a 144-0367 Clamp to the air cleaner end.

3. Seat the air intake hose firmly and squarely to the turbo inlet and the air cleaner outlet per the images below. Orient the clamps as shown.

Image1.1.1

Image1.1.2

Image1.1.3

Image1.1.4

4. Tighten the 8T-6703 Clamp at the turbo inlet to a torque of 11.0 +/- 0.5 N.m (8.1 +/- 0.4 lb ft).

5. Tighten the 144-0367 Clamp at the air cleaner outlet to a torque of 7.5 +/- 0.5 N.m (5.5 +/- 0.4 lb ft).