TUBE AS 1267316 - Caterpillar

Problem
Early 1999 model year Row Crop tractors were assembled with various 3 pt. hitch and drawbar components which are susceptible to corrosion. Changes have been made to the component material (either through plating or the use of stainless steel). These earlier components should be replaced.
Affected Product
Model & Identification Number
Group 1
CH35 (8RD1-72, 8RD74-75ADK8RD1-311, 8RD318, 8RD322)
CH45 (ABF1-99, ABF101-108, ABF110-119 3BK1-345 , 3BK348-349, 3BK359-361, 3BK363, 3BK365-366)
CH55 (6NN1-166, AEN1-375, AEN377-380, AEN382-388, AEN392-397, AEN403-409, AEN411, AEN413 , AEN424-426, AEN428-431, AEN437-438, AEN444-455)
Group 2
CH35 (ADK326)
CH45 (ABF100)
CH55 (AENAEN421)
Group 3
CH55 (AEN376, AEN398-402)
Group 4
CLAAS CH55 (7TZ1-2101)
Parts Needed
Group 1
1 - 1417055 PIN AS4 - 1513095 PIN AS4 - 1513098 PIN2 - 1520781 PIN AS4 - 1524241 PIN2 - 1531989 ROD-LIFT LINK2 - 1537752 PIN AS1 - 1630570 PIN1 - 1630571 BLOCK1 - 1641020 PIN AS2 - 1733694 PIN AS1 - 1734060 PAINT-CHAR12 - 1757515 SPACER2 - 1777480 PIN-SPRINGGroup 2
1 - 1417055 PIN AS4 - 1513095 PIN AS4 - 1513098 PIN2 - 1513261 PIN AS2 - 1520781 PIN AS4 - 1524241 PIN2 - 1531989 ROD-LIFT LINK2 - 1537752 PIN AS1 - 1630570 PIN1 - 1630571 BLOCK1 - 1641020 PIN AS2 - 1733694 PIN AS1 - 1734060 PAINT-CHAR14 - 1757515 SPACER2 - 1777480 PIN-SPRINGGroup 3
1 - 1417055 PIN AS1 - 1734060 PAINT-CHAR3 - 1757515 SPACERGroup 4
1 - 1417055 PIN AS4 - 1513095 PIN AS4 - 1513098 PIN2 - 1520781 PIN AS4 - 1524241 PIN2 - 1531989 ROD-LIFT LINK1 - 1630571 BLOCK1 - 1725587 PIN2 - 1733694 PIN AS1 - 1734060 PAINT-CHAR12 - 1757515 SPACERAction Required
See the attached Rework Procedure.
Service Claim Allowances
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Attach.(1-Rework Procedure)Rework Procedure
Unless specified, parts are being replaced with the same part number as removed. Parts Department inventory was purged/reworked prior to issuance of this Service Letter.
Group 1:
1) The following hitch and drawbar related piece parts need to be replaced with improved corrosion resistance components. Refer to the Illustrations for component location. 2)