SEAL AS 1U3998 - Caterpillar

When you are attempting to define a problem with the power train, it is necessary to perform the procedures that are contained in this section.If a problem is encountered with the transmission, recalibrate the transmission prior to proceeding with investigations.A visual inspection of the system must be carried out in order to eliminate many of the less complex problems.Upon completion of a visual inspection, if the cause of the problem has not been diagnosed, carry out operational checks of the system.If both visual inspection and operational checks have been carried out and there is still no clear indication of the cause of the problem then it will be necessary to refer to the troubleshooting charts and the test procedures that are contained in this manual.Troubleshooting the transmission is a complex operation. Refer to the various troubleshooting sections in this manual for specific routines for troubleshooting.This list of possible problems and possible corrections will only provide an indication of the location of a problem and the repairs that are required. It is important to remember that a problem is not necessarily caused by a single part, but by the relation of one part to a number of other parts. This information cannot provide all the possible problems and corrections. It is necessary for service personnel to define the problem. Any repairs may then be carried out.