ROLLER AS 3836938 - Caterpillar

This Program must be administered as soon as possible. When reporting the repair, use "PI1329" as the Part Number, "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description Code. Exception: If the repair is done after failure, use "PI1329" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.
This Revised Service Letter replaces the April 25, 1997 Service Letter. Changes have been made to the Affected Product.
Problem
The 8W6469 Bracket used to mount the lean wheel cylinder to the axle may cause the welds to break where it is fixed to the axle or the axle may break away at the oval hole in the axle where the bracket is welded over on certain 12H, 140H, 143H, 160H, and 163H Motor Graders.
Affected Product
Model & Identification Number
12H (4XM420-1174, 8MN420-436, 8MN438-459, 2LR270-276, 2WR420-570, 4ER288-340, 4ER342-343, 4ER349-349, 4ER354-354, 4ER357-357, 4ER362-362, 4ER367-367, 4ER369-399, 2GS270-276, 2GS278-279, 2GS282-284, 2GS287-300)
140H (2ZK58-1769, 5HM258-800, 8JM258-269, 8KM358-393, 9TN58-77, 9TN79-81, 9TN83-85, 9TN87-87, 9TN89-89, 9TN95-95, 9TN97-97, 9TN99-118, 9ZN58-156, 3FR1-100, 3AS358-361, 3AS363-365, 3AS367-369, 3AS371-371, 3AS374-377, 3AS380-380, 3AS382-382, 3AS392-399)
143H (1AL24-308)
160H (9EJ30-427, 2FM330-332, 2FM336-336, 2FM338-342, 2FM344-349,3GM30-30, 3GM34-49, 6WM330-340, 9JM330-330, 3HR1-8, 2HS330-333, 2HS335-335, 2HS339-349)
163H (5AK19-122)
Parts Needed
Dealers will need to order parts for this Program.
1 - 1452414 PlateAction Required
Install new support plate between the lean wheel cylinder mounting bracket and the top of the axle. See the attached procedure.
Owner Notification
U.S. and Canadian owners will receive the attached Owner Notification.
Service Claim Allowances
This is a 4-hour job. On 143H and 163H All Wheel Drive Motor Graders, an additional 2 hours will be allowed.
U.S. and Canadian Dealers Only - Eligible dealers may enter a Type 2 SIMS Report.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.
Attach.(1-Owner Notification)(2-Rework Procedure)Copy Of Owner Notification For U.S. And Canadian Owners
Rework Procedure
Before beginning rework, center lean arm and install bolt in the lean arm and the hole in the axle on left side to prevent the lean arm from falling over.
1. Non-All Wheel Drive machines: Disconnect both hoses from the right hand steering cylinder and plug the hose ends and the connectors at the cylinder. Pull the hoses out of the axle and tie up out of the way. Disconnect the hoses from the lean wheel cylinder and plug them and the connectors on cylinder.1A. All Wheel Drive machines: Do the items listed in Item 1, and in addition remove the rubber clamps on AWD hoses on the right front side of axle and tie up out of the way.2. Before beginning the rework, scribe a center line on the front axle plate in line with the center line of the pin holes in lean cylinder mounting casting. See Illustration A.3. Remove the lean wheel cylinder mounting pin from bracket on axle and swing cylinder out of the way.4. Remove the lean wheel cylinder mounting bracket from the axle by grinding or air arching the welds.