KIT-SEAL- 2422541 - Caterpillar

Illustration 5 g01416269
273-0120 Ball Stud and 338-5050 Ball Stud
Illustration 6 g01424995
8X-9619 Ball Stud
8X-9620 Ball Stud
156-8136 Ball Stud
192-5702 Ball Stud
438-1135 Ball Stud
Place the transducer near the center of the flat portion of the threaded end of the ball stud.
Illustration 7 g01438008
Transducer pattern for the flat surface on the threaded end of the ball stud
Move the transducer from the center to the outer edge of the flat surface and back to the center of the flat surface. Continue to move the transducer from the center to the outer edge until the entire flat surface area has been covered. Refer to the pattern in illustration 7. Maintain contact between the transducer and the ball stud in order to sustain the proper back wall signal.
Illustration 8 g01416467
273-0120 Ball Stud
(D) Area of concern
(E) End of ball stud
Illustration 9 g01623298
8X-9619 Ball Stud
8X-9620 Ball Stud
156-8136 Ball Stud
192-5702 Ball Stud
438-1135 Ball Stud
(F) Area of concern
(G) Bottom of drilled holes
(H) End of ball stud
Identify the ball stud as an acceptable ball stud or as a damaged ball stud.Documentation
When the inspection of the ball stud has been completed, document the following information:
Date of inspection
Serial number of the inspected machine
Part number of the inspected ball studs
Number of inspected ball studs
Number of ball studs that were damaged per machine
Initial of operator that performed the inspection
Any corrective action that was takenRejection Criteria
A defect that is indicated in the area of concern on the display screen indicates a damaged ball stud. A complete loss of the reflected signal may also indicate a damaged ball stud.If no clear defects are found, the machine may be returned to service.If defects are found on the 273-0120 Ball Stud and 338-5050 Ball Stud, replace the ball stud. Refer to the Disassembly and Assembly Manual for instructions on replacing the ball stud.If defects are found on the following ball studs, verify the results by a dry magnetic particle examination:
8X-9619 Ball Stud
8X-9620 Ball Stud
156-8136 Ball Stud
192-5702 Ball Stud
438-1135 Ball StudDry Magnetic Particle Examination
Note: The Dry Magnetic Particle Examination can be completed to verify an ultrasonic indication (defect).Note: If the dry magnetic particle examination indicates that the ball stud is free of defects, the ball stud may be returned to service. However, if the ball stud has less than 50 percent service life remaining, the ball stud should be replaced.The ball stud must be removed from the machine to perform the dry magnetic particle examination.Tooling for the dry magnetic particle examination method requires a DC magnetic yoke, magnetic particle powder, and cleaner. The ball stud must be clean and dry to use this method.To complete the dry magnetic particle examination, perform the following steps:
Thoroughly clean the ball stud. Remove any residual oil or contaminants from the ball stud. Make sure that the ball stud is dry after cleaning.
Place the magnetic yoke on the surface at a right angle (90 degrees) to the suspected defect area.
Energize the magnetic yoke and apply the magnetic particle powder to the surface of the ball stud between the legs of the yoke.
Illustration 10 g01421408
(6) Magnetic yoke
(7) Typical example of a