Special Instruction SEHS9803 Is Available For Reinforcing The 7U-1598 (Center) And 7U-1599 (Rear) Frame assemblies To Prevent Cracking{7200}
Usage:
D350D (9RF1-544),
D400 (1MD1-133),
D400D (1-923, 4EJ1-20) Articulated Trucks
Special Instruction, SEHS9803, "Procedure For Reinforcing The 7U-1598 (Center) And 7U-1599 (Rear) Frame Assemblies To Prevent Cracking" is available to provide the necessary information to repair and reinforce the center and rear "A" frame assemblies.
Fabricated plates are welded to the "A" frame assemblies to increase strength.
Caterpillar Information System:
1994/10/03 Drive Shaft Lubrication Requirements{3253}
1994/10/03 New Flexible Exhaust Assembly Has Longer Service Life{1061}
1994/10/03 New Flexible Lines Used In Aftercooler Water Lines Group{1380,1063}
1994/09/26 New Gasket Provides Improved Sealing Between Air Compressor And Drive{1803}
1994/09/26 New Gears Reduce Noise And Pipe Plugs Make Installation Easier In Auxiliary Drive Group{1150,1165}
1994/09/26 Exhaust Dust Ejector Operation{1055,1068}
1994/09/26 Arc Suppressors Improve Life of Air Conditioner Thermostatic Switch{7337}
1994/09/26 Engine Maintenance Check Deleted{1100}
1994/09/26 New Hitch Seal And Retaining Ring Used In Rear Frame Groups Reduces Hitch Face Wear{7051}
1994/09/26 Maintenance Guidelines For Exhaust Bypass Group{1057}
1994/09/26 Bolts Are Now Used In The Steering Linkage Group/Torque Specification Has Been Raised{4305}
1994/09/26 Muffler Group and Exhaust Piping Groups Changed To Provide A New Slip-Fit Muffler{1062,1061}
1994/10/03 New Mounting Hardware for Leveling Blade Arms Improves Retention{6051,6061}
1994/10/03 Fan V-Belt Part Number Has Changed For Certain Models With The 3204 Engine{1357}
1994/10/03 Oversize Fuel Pump Drive Idler Shaft Available To Salvage Cylinder Block{1206}
1994/10/03 New Engine Crankshaft Rubber Damper Assembly Uses Improved Rubber Material{1205}
1994/10/10 New Exhaust Flex Hose Used To Avoid Leaks From System Vibration{1058}
1994/10/10 New Oil Cooler And Hose Improves Routing{1374}
1994/10/10 New Transmission Oil Filter With Improved Seal Area{3164}
1994/10/10 Larger Stick Cylinder Piston Bolts Prevents Loosening{5458}
1994/10/10 Improved Wheel Bearing Cone Anti-Rotation System Prevents Wheel Bearing Cones From Rotating On The Axle Housing{4208,4234}
1994/10/10 New Driveline Yokes Have Improved Sealing And Seal Protection{3253,3250}
1994/10/10 New Differential And Bevel Gear Group And New Axle Housing Used In Axle Drive Group To Increase Service Life{3260,3280}
1994/10/10 New Fittings For Drum Drive Motor{5057}