PRODUCT SUPPORT PROGRAM FOR REPAIRING BOOM CRACKS LOCATED AT THE TOP WELD ON CERTAIN 416D, 420D, 420D IT, 430D, AND 430D IT BACKHOE LOADERS
Usage:
SEBE9189-02
May 18, 2005
(Revised May 2007)
U-163
A-122
O-136
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| After failure only |
PRODUCT SUPPORT PROGRAM FOR REPAIRING BOOM CRACKS LOCATED AT THE TOP WELD ON CERTAIN 416C, 416D, 420D, 420D IT, 426C, 430D, 430D IT, AND 436C BACKHOE LOADERS |
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PS50944
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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.
NOTE: This Revised Service Letter replaces the May 18, 2005 (Revised October 2005) Service Letter. Changes have been made to the Termination Date, Action Required, and Service Claim Allowances.
TERMINATION DATE
- May 31, 2008
PROBLEM
- The booms on certain 416C, 416D, 420D, 420D IT, 426C, 430D, 430D IT, and 436C Backhoe Loaders may develop cracks between the side plate to upper plate in the "admiral hat" area. It appears to be a weld quality issue.
AFFECTED PRODUCT
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| Model | Identification Number |
| 416C | 4ZN16044-99999
1WR8166-99999 |
| 416D | BFP001-99999 |
| 420D | FDP001-99999 |
| 420D IT | BLN001-99999 |
| 426C | 6XN3616-99999
1YR1517-99999 1MR956-99999 1CR864-99999 |
| 430D | BNK001-99999 |
| 430D IT | BML001-99999 |
| 436C | 8TN925-99999
2AR01604-99999 1PR01599-99999 1FR01416-99999 |
PARTS NEEDED
- There are no parts needed for this program.
ACTION REQUIRED
- To fix a crack in the effected area, first blow out the old weld and examine the gap between the top plate and the side plate. A normal gap is 1mm to 2mm. If the gap is 4mm or greater, contact Backhoe Product Support, see below. A double pass weld is recommended.
- David Council
Email: Council_David_N@cat.com
Or
Chris Wieland
Phone: 919-550-1415
Email: Wieland_Christopher_A@cat.com
SERVICE CLAIM ALLOWANCES
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Product smu/age whichever comes first |
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PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.Caterpillar Information System:
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