CAB GP 4178095 - Caterpillar

you are defining a problem in the steering system, the following procedures should be followed. First, perform the visual inspections. When the visual inspections are complete and the problem is not fully understood, perform the operational checks. After the visual inspections and the operation checks are complete and the problem is not fully understood, perform the test procedures. The test procedures will help identify the problems in the steering system. The list of operational checks will show the probable cause of a known problem. Since there may be more than one cause for a problem, it may be necessary to perform more than one operational check. These inspections and these tests will help identify the causes that are most probable.