ALTERNATOR MOUNTING GROUP 9L1725 - Caterpillar

Rework Procedure
Remove the stick and boom from the machine and plug the hydraulic connections. Refer to the machines Disassembly and Assembly Manual.
Make a visual inspection of all boom welds.
Perform an Ultrasonic test of the boom nose welds from A to B (See Image 1.1.2) to identify possible cracks between side plates and boss.
Ultrasonic test made by certified specialist is mandatory prior to rework.
Data for Ultrasonic apparatus setup is given in Image 1.1.2.
Image1.1.1
Image1.1.2
If a crack is found, please contact Product Support Service Engineer Christian M?hle (email: Muhle_Christian, phone: + 32 71 25 2559) for further
instructions.
If no cracks are found at boom nose welds, perform the following boom nose reinforcement:
Welding Requirements:
Welding quality is critical to the success of the installation procedure. Welds
must be smooth and continuous. No undercutting is allowed. No overlap is
allowed. Grind the ends of the welds to a smooth radius.
Prepare the metal for welding according to ? Preparing