Improved Laser Hardened Spindles Used In Certain Off-Highway Trucks{4205,4234}
Usage:
784B (5RK) Tractors;
785B (6HK),
789B (7EK),
793C (4AR) Off-Highway Trucks
Description of Change: An improved series of spindle assemblies are available which feature both laser hardened bearing journals and machined slots to allow pinning of the inner and outer wheel bearing cones to the bearing journals. These changes will improve component service life. Refer to the following chart for part numbers.
Adaptable To: The new components are effective with 784B (5RK26), 785B (6HK937),0R-9034 (s/n 14947); 789B (7EK665), 0R9040 (s/n 14954); 793C (4AR299), 0R9046 and 0R9049 (s/n 15057).
Caterpillar Information System:
1998/09/14 Updated Assembly Procedure For 777D Off-Highway Trucks Is Available{7960,7006}
1998/09/14 New Clutches Reduce Drag And Improve Efficiency{3030,3155}
1998/09/07 New Serial Number Prefix {0374}
1998/09/07 The Cloud Point Specification In The Chart, "Specifications For Distillate Fuel," Has Changed In Certain Publications {1250,1280,0375}
1998/09/07 Addition Of Screed Deflectors {6643}
1998/09/07 Calibration Not Accepted During Auto Calibration Of Initial Propel Current {4800,7490}
1998/09/07 Asphalt Paver Track Adjuster Socket Now Available {4157}
1998/09/07 Inter-Axle Differential Joint Improved {3258,3287}
1998/09/07 Non-E-Trim Unit Injectors No Longer Produced For 3500B Engines {1290}
1998/09/07 Fuel Injection Pump Usage With Emissions Certified 3054 Engines In C-Series Backhoe Loaders {1251}
1998/09/07 New Implement Valve Detent Testing And Adjusting Specifications Provide Additional Flexibility In Adjustment {5057}
1998/08/31 Special Instruction, REHS0280, "Installation And Removal Of The Mechanically Attached Wear Plate System" Is Available {0374,6120,6820}
1998/09/14 Use FT2563 Adjustment Tool For Assembly Of Limited-Slip Differential{3263}
1998/09/14 New 1U-8660 Hydraulic Unit Boring Bar, 9U-5730 Portable Boring Bar (110 Volt), And 9U-5889 Portable Boring Bar (220 Volt) Now Available{0679}
1998/09/14 New Torque Value For Lug Nut On Drive Wheels{4209,4210}
1998/09/21 Correction To Testing And Adjusting Manual, SENR6785-01 And Specifications Manual, SENR6703 {0374,3155}
1998/09/21 Recommended Lubrication And Torque Procedure For Cylinder Head Bolts {1100}
1998/09/21 Recommended Lubrication And Torque Procedure For Connecting Rod Bolts {1218}
1998/09/21 Recommended Lubrication And Torque Procedure For Main Bearing Cap Bolts {1203}
1998/09/21 New Plug Kit Improves Injection Actuation Pressure During Engine Cranking {1714}
1998/09/21 Use FT2594 Seal Installer For Correct Cone Seal Installation {7561}
1998/09/28 New Gear And New Shaft Assemblies Used In Scavenge Oil Pump Groups {1312}
1998/09/28 New Spacer Plate Gasket Provides Improved Sealing {1221}
1998/09/28 New Larger Engine Scavenge Oil Pump Provides More Oil Flow {1312}