CHANNEL AS 2685087 - Caterpillar

Introduction
The problem with the welding machine has been identified and corrected.Problem
Illustration 1 g03341329
(1) Shaft number two (2) Shaft number three (3) Shaft number fourLoss of forward or reverse gears could be caused by a failure of transmission shaft number 2 (1), shaft number 3 (2), or shaft number 4 (3). The failure occurs where the gear is welded to the shaft. The loss of forward or reverse gears requires first checking the transmission clutch pressures and checking the screens for any debris. Failure of the weld is identified by a loss of clutch pressure and/or metal in the transmission sump screen.
Illustration 2 g03341395
Photo of a failed shaftAny issue with the welded shaft would be expected to propagate under 1,000 hours of operation.Solution
Table 1
Parts Required for This Shaft Repair    
Item     Qty     Part #     Part Name    
1     1     171-7091 (1)     Shaft As    
2     1     171-7095 (1)     Shaft As    
3     1     249-6718 (2)     Shaft As    
4     1     288-2547 (3)     Transmission Gasket Kit    
5     1     349-0676 (4)     Transmission Gasket Kit    
6     1     6Y-1878 (5)     Shaft As    
( 1 ) Use on K/M/M2-Series machines as required
( 2 ) Use on M/M2-Series machines as required
( 3 ) Use on K-Series Machines
( 4 ) Use on M/M2-Series machines
( 5 ) Use on K-Series machines as requiredReplace shaft assembly with current stock parts. Follow Disassembly and Assembly Manual for your machine regarding repair instructions.