ELBOW 0064712 - Caterpillar

28Jul2010
U-277
A-212
D-237
O-240
Parts stock action only
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND REMOVING, IF NECESSARY, VARIOUS CHECK VALVE ASSEMBLIES FROM DEALER PARTS STOCK
7750 PI70349
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.
TERMINATION DATE
31Oct2010
PROBLEM
The poppet within the existing check valves may have missed a drilling process. If the poppet does not contain flow holes, the check valve will not function properly.
ACTION REQUIRED
Inspect all check valves that are listed in Image 1 for flow holes in the poppet. Shine a bright light from the end and observe for the presence of flow holes. Refer to Images 2, 3, 4, and 5.
- If there are no flow holes observed in the poppet, remove the check valve from dealer parts stock.
- If there are flow holes observed in the poppet return the check valve to the original packaging, mark the package to indicate the check valve has been inspected according to this program (PI7#### / REBE6345), and return the part to dealer part stock. Image 4 is an example of a poppet with flow holes.
Image1
Image2
Image3
Image4
Image5
SERVICE CLAIM ALLOWANCES
Submit one claim for all check valves inspected.
0.5 hours will be allowed for every 5 check valves that are inspected.
Example:
- Five check valves inspected = 0.5 hour claim
- Ten check valves inspected = 1.0 hour claim
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.