ENGINE AR- 3964519 - Caterpillar

30Jun2010
(Revised 28Jul2010)
U-223
A-176
D-193
O-198
TM-14
Parts stock action only
PRODUCT IMPROVEMENT PROGRAM FOR REMOVING CERTAIN 7C7677 AND 7C7678 FUEL LINE TUBES FROM DEALER PARTS STOCK
7750 PI70347
When submitting claim for Parts Stock Action, Use the appropriate 99Z as the s/n, the appropriate Service Letter Program Number as the Part number in the Part Causing Failure field, "7751" as the Group Number, "56" as the Description Code.
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.
This Revised Service Letter replaces the 30Jun2010 Service Letter. Changes have been made to Action Required to clarify the packaging date codes.
TERMINATION DATE
30Sep2010
PROBLEM
Certain 7C7677 and 7C7678 fuel line tubes used on various 3508, 3512, and 3516 engines can crack. If the tube cracks it can lead to a fuel leak.
ACTION REQUIRED
Remove all 7C7677 and 7C7678 tube assemblies from parts stock with the packaging dates listed below. Reference Image1 for packaging date location. The packaging date may be printed directly on the bag or on a part identification label.
Date Codes
D##M04Y10P####
D##M05Y10P####
"#" could be any letter or number.
If the bag does not have a date code similar to those above, the part is suitable for use and no further action is needed.
Image1
SERVICE CLAIM ALLOWANCES
Submit one claim for all parts removed from dealer parts stock.
PARTS DISPOSITION
A Parts Return Request will be generated via Send-It-Back when submitting the claim with this program as the part causing failure.
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.