STICK AR-HOE 3284901 - Caterpillar

This Program can only be administeredafter a failure occurs. The decision whether to apply the Program is madeby the dealer. When reporting the repair, use "PS50967" as the Part numberand "7755" as the Group Number. Use "96" as the Warranty Claim DescriptionCode and use "Z" as the SIMS Description Code. Although this Program is to be administeredas described above on the Affected Product, parts should be removed fromparts stock as soon as possible. The information supplied in this serviceletter may not be valid after the termination date of this program. Donot perform the work outlined in this Service Letter after the terminationdate without first contacting your Caterpillar product analyst. This Revised Service Letter replacesthe March 26, 2005 Service Letter. Changes have been made to the TerminationDate and Affected Product.TERMINATION DATE
March 31, 2008PROBLEM
The 6G-1633 Chain Group used on certain 12H, 140H,and 143H Motor Graders may contain bushings that did not receive the properheat treat. This could result in reduced life of the chain by allowingpremature stretching. If a defective chain is installed in the same tandemas a good chain, wheel hopping may occur as the tires try to stay in timewith each other. Kinking and "popping" of the chain may also occur as thesoft bushing material is extruded out between the links. AFFECTED PRODUCT
Model Identification Number
12H CBK00635-00684
12H 4ER01026-01051
12H AMZ00581-00621
12H 12500166-00178
140H CCA01087-01207
140H 5HM02590-02650
140H APM01774-01944
140H 12600220-00226
143H APN00517-00580PARTS NEEDED
Quantity Part Number Description
1 6G1633 CHAIN GP
Use as required. Qtymay vary depending on inspection results.ACTION REQUIRED
***** Parts Stock *****Inspect all 6G1633 Chain Groups in dealer partsstock for an "J5" Date Code. Chain groups with an "J5" Date Code need tobe removed from dealer parts stock. Refer to the following Illustrationfor the location of the date code. Illustration - Location of date code stampon the chain links***** Affected Product *****See the attached procedure.SERVICE CLAIM ALLOWANCES
***** Parts Stock *****Submit one claim for all 6G1633 Chain Groupsremoved from dealer parts stock.***** Affected Product *****
Product smu/age whichevercomes first Caterpillar Dealer Suggested Customer Suggested
Parts Labor Hrs Parts Labor Hrs Parts Labor Hrs
0-1000 Hours0-Up Months 100% 4 0 0 0 0
This is a 4-hourjob.
This is a 4-hourjob to inspect both tandems and replace one or two chains in the firsttandem. An additional 3 hours will be allowed if one or two chains requirereplacement in the second tandem.PARTS DISPOSITION
***** Parts Stock *****Handle the parts in accordance with your WarrantyBulletin on warranty parts handling***** Affected Product *****Handle the parts in accordance with your WarrantyBulletin on warranty parts handling.Attach. (1-Rework Procedure)REWORK PROCEDURE
Refer to the Disassembly & Assembly Manualfor the proper drive chain replacement procedure.If a failure of one chain is experience, theother three chains on the machine should be inspected and replaced if theyhave the "J5" date code.The date code is stamped on one side of thechain links with a letter to the left of the trademark and a number tothe right of the trademark. See the following Illustration.
Illustration - Location of date code stampon the chain linksTypically, every fifth or sixth link in eachchain will have the date code stamp. The date codes should be visible throughthe access openings in the top and/or sides of the tandem housings. Thewheels may need to be rotated to move the links containing