CLAMP 3672071 - Caterpillar

This Revised Service Letter replaces the 09Aug2018 Service Letter. Changes have been made to the Affected Product and the Service Claim Allowances.
TERMINATION DATE
31Aug2020
PROBLEM
The existing welds securing the 464-2833 Fixed Knife to the saw box can crack/fail on certain DLK426 Delimber Knuckleboom Loaders. If the existing welds fail, it may cause extensive damage if the delimber continues to be operated.
AFFECTED PRODUCT
Model Identification Number
DLK426 DLX00100, 102, 104, 200-204, 206-207, 209-248, 250-257, 259-268, 271, 274-298, 300-303
PARTS NEEDED
No parts needed for this program
ACTION REQUIRED
Note: Read and understand the Operation and Maintenance Manual for safety information and safe working practices before starting this Rework Procedure.
IMPORTANT: If welding in the vertical position, to ensure proper penetration, using vertical up welding processes is the correct welding practice.
Any time work is performed on a delimber the knifes are to be closed and the accumulator drained. Refer to the delimber Operation and Maintenance Manual, to complete this procedure.
1. Remove all paint and prepare the affected areas before welding.
2. Grind the paint off of the joints shown in Image1.
3. Weld the striker plate completely to the knife and delimber frame using vertical up welds. The welds are to be 6mm fillet welds. Refer to Image1.
4. Once the area is cooled, clean and paint safety red.
5. Weld the entire length of the back side of the knife completely. The weld is to be a 6mm bevel weld. Refer to Image2.
6. Once the area is cooled, clean and paint safety red.
7. Once welding is complete and cooled the area can be painted using the color safety red.
Image1
Image2
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
0-4000 hrs,
0-24 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 3.0-hour job
If there has been a previous repair, part age/hours will apply. Retain a copy of the previous repair invoice in the dealer's records for audit purposes, and specify repair date and machine hours in the "Additional Comments" section of the warranty claim.
Note: If applying this program as an After Failure repair 6.0 hours are allowed. This includes cutting off the existing knife, if bent, and straightening and welding back onto the delimber.
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.