HEAD 6G4408 - Caterpillar

Truck/Tractor793F (S/N: SND1-UP; SSP1-UP; RBT1-UP)793F AC (S/N: EMD1-UP)Description Of Change: Special Instruction , M0069982 , "Procedure to Replace the Center Tube Assembly on the 793F Off-Highway Truck" has been updated.The updates include:
corrections to the previous revision
curved and straight welding ceramic backing is available and referenced
clarification of "Inner C" location (re: Part of the Outside Window Plate and Inside Welding Plate)
references to welding and ultrasonic testing videos that have been created to provide clarification
boss location information and verification (re: Install Hardware on the Right-Hand Inside)
boss location information and verification (re: Install Hardware on the Left-Hand Inside)
added new Title: Center Tube Brackets Rework (If Required)
added instructions for removing the protective coating and preparing new center tube assemblies that are not painted and for center tube assemblies that are paintedAdaptable To: The following list of Titles have been updated with additional information:Note: Refer to the most recent version of Special Instruction , M0069982 , "Procedure to Replace the Center Tube Assembly on the 793F Off-Highway Truck" before performing the update.
Welding Instructional Videos (Caterpillar Channel 1)
Fabricate Rail Template
Rear Engine Mount Bracing (Engine Out)
Prepare Inside Rail Profiles and Prepare New Center Tube Assembly
Remove the Lug on New Center Tube Assembly
Integral TIG dressing
Preparation and Installation of Outside Window Plate and Welding of Outside and Inside Window Plates
Reassemble Components
UT Instructional Videos (Caterpillar Channel 1)
Inspection and Test Plan
Required Photograph - ChecklistFor a complete list of material and the correct procedure that is needed to replace the center tube assembly, refer to the most recent version of Special Instruction , M0069982 , "Procedure to Replace the Center Tube Assembly on the 793F Off-Highway Truck". The special instruction can be found on the Caterpillar service information system (SIS) and through the normal literature distribution system at your local Cat dealer.