PRODUCT SUPPORT PROGRAM FOR REWORKING THE SINGLE TILT LOADER ARMS THAT MAY CRACK ON CERTAIN 416D, 420D, 430D, 416E, 420E, AND 430E BACKHOE LOADERS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REWORKING THE SINGLE TILT LOADER ARMS THAT MAY CRACK ON CERTAIN 416D, 420D, 430D, 416E, 420E, AND 430E BACKHOE LOADERS [REBE1720]

IMPLEMENTS

ARM GP

PRODUCT SUPPORT PROGRAM FOR REWORKING THE SINGLE TILT LOADER ARMS THAT MAY CRACK ON CERTAIN 416D, 420D, 430D, 416E, 420E, AND 430E BACKHOE LOADERS

REBE1720-00

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16Mar2007

U-101

A-85

D-85

O-93

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*After Failure Only*	PRODUCT SUPPORT PROGRAM FOR REWORKING THE SINGLE TILT LOADER ARMS THAT MAY CRACK ON CERTAIN 416D, 420D, 430D, 416E, 420E, AND 430E BACKHOE LOADERS
6119		PS51277

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NOTE:

This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS51277" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "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 AVSpare product analyst.

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TERMINATION DATE

31Mar2009

PROBLEM

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The single tilt loader arms may crack as a result of a manufacturing defect on certain 416D, 420D, 430D, 416E, 420E, and 430E Backhoe Loaders. Cracks have occurred at two locations:

1) The torque tube to the arms at the inside top weld
2) The torque tube to the arms at the outside bottom weld

AFFECTED PRODUCT

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Model	Identification Number
416D	BFP12900-17198
416E	SHA00116-01785, 1787-2090
420D	FDP18400-27266, 90257
420E	HLS00210-03113, 3115-3123, 3125-3211, 3213-3222, 3224-3451
430D	BNK05900-07307
430E	EAT00230-00772

PARTS NEEDED

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No parts needed for this program

ACTION REQUIRED

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Refer to the attached Rework Procedure.

**Note: Before any repair is done, measure the weld leg length at the crack loaction and record in the claim story.**

After Failure: Defined as cracks detected in one or more of the defined areas and reworking the loader arms according to the "Rework Procedure". Replace Use "96" as the Warranty Claim Description Code and "Z" as the SIMS Decription Code.

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SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	AVSpare		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-3000 hrs, 0-30 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
3001-5000 hrs, 31-48 mo	33.3%	50.0%	0.0%	0.0%	50.0%	50.0%

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NOTE: This is a 14.0-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.

Rework Procedure

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**Before any repair is performed, measure the weld leg length at the crack location. Submit this information as part of the claim story**

Inspect the loader arms for cracking at two locations: 1)The inside-upper location of the torque tube to the loader arms (see image 1.1.1); 2) The outside-lower location of the torque tube to the loader arms (see image 1.1.2).

If at least one crack is detected in inside-upper location, as in image 1.1.1, proceed with "Reworking Lift Arms with Inside Crack".

If at least one crack is detected in the outside-lower location, as in image 1.1.2, proceed with "Reworking Lift Arms with Outside Crack".

Image1.1.1

Image1.1.2

"Reworking Lift Arms with Inside Crack"

1. Remove the weld between A-B, making sure that all the crack is removed. If the crack expands beyond the area between A-B, remove all the crack and proceed (see image 1.2.1).

2. Grind a 45deg bevel in the double plate in the area the weld was removed (see image 1.2.2).

Image1.2.1

Image1.2.2

3. Add a weld to fill in the 45deg bevel (see image 1.3.1).

4. Add a 12mm fillet over the root weld (see image 1.3.1).

5. Repeat steps 1-4 on the other side for the inside weld.

Image1.3.1

6. Add a weld on the outside-lower location of the torque tube between A-B (see image 1.4.1 and 1.4.2).

7. Repeat step 6 on the other side for the outside weld.

Image1.4.1

Image1.4.2

"Reworking Lift Arms with Outside Crack"

1. Remove the weld between A-B, making sure that all the crack is removed. If the crack expands beyond the area between A-B, remove all the crack and proceed (see image 1.5.1).

2. Grind a 45deg bevel in the double plate in the area the weld was removed (see image 1.5.2).

Image1.5.1

Image1.5.2

3. Add a weld to fill in the 45deg bevel (see image 1.6.1).

4. Add a 8mm fillet over the root weld (see image 1.6.1).

5. Repeat steps 1-4 on the oppisite side, if cracked.

6. If the opposite side is NOT cracked, add weld according to "Reworking Lift Arms with Inside Crack" step 6.