KIT-GAS SPRING 4676723 - Caterpillar

Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.
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
31Dec2014
PROBLEM
Piston skirts with U182 and U183 dates codes can lead to piston seizure on certain 3456 or C-16 Engines. If the existing piston skirts with these dates codes are installed it can/will lead to a piston skirt seizure.
ACTION REQUIRED
Remove all 284-6039 Piston Skirts with a U182 or U183 date code on the bottom of the piston skirt from dealer stock. Refer to Image 1.
For 0R9393 and 0R8918 Cylinder Packs with packaging date codes between D22M07Y13P68HL and D22M07Y14P68HL (example Image2), remove from the packaging and inspect for U182 and U183 date codes on the piston skirt. Replace the piston skirt if found with these date codes with a new 284-6039 Piston Skirt of another date code.
For short blocks with part numbers 0R4767, 10R1506, and 10R8606 with packaging date codes between D22M07Y13P68HL and D22M07Y14P68HL, inspect the short block to determine if they contain piston skirts with the affected U182 and U183 dates codes. If any are found, replace each piston skirt with an affected date code with new 284-6039 Piston Skirt of another date code. Document the serial number of each short block reworked.
For long blocks part numbers 10R7271 and 10R7272 with packaging date codes between D22M07Y13P68HL and D22M07Y14P68HL, inspect the long block to determine if they contain piston skirts with the affected U182 and U183 dates codes. If any are found, replace each piston skirt with an affected date code with new 284-6039 Piston Skirt of another date code. Document the serial number of each long block reworked.
Image1
Image2
SERVICE CLAIM ALLOWANCES
Submit one claim for all parts removed or reworked in dealer parts stock.For 0R9393, and 0R8918 Cylinder Packs, 0.25 hour is allowed each cylinder pack