1997/07/28 Caterpillar


Improved Midwheel Air Spring Has Longer Service Life{4193}

Usage:


Challenger 65 (7YC),
Challenger 65B (7YC),
Challenger 65C (2ZJ),
Challenger 65D (2ZJ),
Challenger 70C (2YL),
Challenger 75 (4CJ),
Challenger 75C (4KK),
Challenger 75D (5AR),
Challenger 85C (9TK),
Challenger 85D (4GR) Agricultural Tractors

Description of Change: An air spring with an improved design is now used. The improved design makes it more difficult for debris to accumulate between the upper and lower bead plates and air spring bellows. In some applications, the earlier design allowed buildup which could result in rubber abrasion and reduced spring life.

Adaptable To: The new 141-6046 Air Spring is a direct replacement for the former 105-8641 Air Spring. The change is effective with Challenger 65D (2ZJ2492), Challenger 75D (5AR494), and Challenger 85D (4GR713) Agricultural Tractors. The change is adaptable to all earlier large Challenger Tillage Tractors listed above.

Caterpillar Information System:

1997/07/21 Valve Lash And Bridge Adjustment Intervals {1105,1121}
1997/07/21 Troubleshooting Data Sheet For Diesel Engines {1000}
1997/07/21 Parameters That Indicate Service Interval Explained {7601,7478}
1997/07/21 VIMS-PC V2.3 Now Available {7601}
1997/07/21 New Solenoid Valve Group For Transmission Selector Valve Group Has Improved Coil For Reliability And Longer Service Life {5066,5479}
1997/07/21 Corrections To Power Train Service Manual Modules {3030}
1997/07/21 Seals And Spacers Of A Different Material Are Used In Advanced Modular Cooling System (AMOCS) {1353}
1997/07/21 Dimensions For Installing Attachment Tailgate Mounting Hardware On Articulated Truck Dump Bodies {7271,7258}
1997/07/21 New Custom Product Support Literature Is Available For 789B Trucks Equipped With 3Z-5207 Towing Bumper {0374,7156,7050}
1997/07/21 New Custom Product Support Literature Is Available For 793C Trucks Equipped With 3Z-5157 Towing Bumper {0374,7156,7050}
1997/07/21 New Custom Product Support Literature Is Available For 785B And 789B Trucks Equipped With Field Installed Flexxaire Fan Drive Arrangement {0374,1359}
1997/07/21 New Custom Product Support Literature Is Available For 785B Trucks Equipped With Field Installed 660 Gallon Fuel Tank {0374,1273}
1997/07/28 New Service Tool Available For Adjusting Transmission Control Valve Initial Pressures{3074}
1997/07/28 Correction To Backhoe Loader C-Series Parts Manuals{7222,7567}
1997/07/28 High Pressure Turbocharger Improvements Reduce Boost Leaks And Extend Service Life{1052,1060}
1997/07/28 Modification to Engine Shut Down Harness Assembly Reduces 793B Engine Removal And Installation Assembly Time{1408}
1997/07/28 Rerouted Heater Lines Reduces 793 Engine Removal And Installation Time{7554,0701,7304}
1997/07/28 Schematic Available For 793B Off-Highway Trucks{7601,7490}
1997/07/28 Differential Oil Changes Require 1U-9891 Oil Additive {3258,3263,3265}
1997/07/28 Correction to Steering Pump Illustration{4324}
1997/07/28 New Support Spring Has Improved Service Life{4304}
1997/07/28 Correct Position of Shaft Seals And New Plug For Seal Drain Cavity In Pump Groups Improves Service Life{4306,5073,5083}
1997/07/28 Required Maintenance Of Air Cleaner Dust Valves{1050,1051,1055,1068}
1997/07/28 Protection Of Unsealed Electrical Terminations For Machines Used In Corrosive Applications{1400}
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