1997/02/24 Caterpillar

New Radiator Group Includes Improved Radiator Core Assembly {1353}

Usage:

834B (7BR) Wheel Tractors, 836 (7FR) Compactors

Description of Change: A new radiator group that includes an improved radiator core assembly is used on these machines. The improved radiator core assembly is manufactured with a different soldering process. The new process results in stronger tube to header solder joints.

Adaptable To: The new 137-4896 Radiator Group is a direct replacement for the former 1W-6861 Radiator Group. The new radiator group is effective with 834B (7BR590) Wheel Tractor and 836 (7FR248) Compactor.

The only difference between the new and former radiator groups is the radiator core assembly. The new radiator group includes the 134-6744 Radiator Core Assembly. The former radiator group included the former 8N-7489 Radiator Core Assembly. The 134-6744 Radiator Core Assembly is a direct replacement for the former 8N-7489 Radiator Core Assembly in 1W-6861 Radiator Group on all earlier 834B Wheel Tractors and 836 Compactors.

Caterpillar Information System:

1997/02/24 Correction To Lift Arm Position Sensor Adjustment {0685}

1997/02/24 New Longer Thrust Pin And Bolts Now Used In Rear Suspension Cylinders To Increase Service Life Of Joint {7213,7201,7200}

1997/02/24 Service Parts Are Available For 9T-4785 Accumulator Group {4331,5077}

1997/02/24 New Sight Gauge On Rear Axle Housing Improves Serviceability {3260}

1997/02/24 Thicker Washer Used To Allow Proper Fastening Of Elbow In Transmission Oil Lines Group {3154,3030}

1997/02/24 New ECM Controlled Variable Speed Fan Clutch Group Available {1356}

1997/02/24 Special Instructions Now Available For 793C Off-Highway Truck Assembly Procedure {0374}

1997/02/24 New Hydraulic Oil Temperature Sender And Hydraulic Oil Temperature Gauge More Responsive {7450,7488}

1997/02/24 New Water Temperature Regulator Improves Cab Heating In Cold Weather Conditions {1350,1355}

1997/02/24 Some Service Parts Available For Engine Fuel Injection Pump {1251}

1997/02/24 New Tooling Simplifies Steering Pump Neutral Adjustment {5070,0738}

1997/02/24 New Tube Assembly And Associated Hardware In The Engine Turbocharger Oil Lines Group {1307}

1997/02/24 New Electronic Transmission Control Group Used {3032,3100}

1997/02/24 Service Manual, Secondary Steering System, Supplemental Information Available {4300,4306,4307,4324,4339,7568}

1997/02/24 Wiper Arm Retaining Nut Requires Tightening After Initial Operation {7305}

1997/02/24 New Bevel Gear Set For Telehandler Front And Rear Differential Groups Improves Service Life {3256}

1997/02/24 New Telehandler And Material Handler Differential Lock Parts Improve Service Life {3258,3264}

1997/02/24 Cold Weather Steering For Telehandlers Improves With Additional Parts {4300,4307}

1997/02/24 Improved Hydraulic Oil Level Gauge For Telehandlers {5057,5050,5056,7479}

1997/02/24 Lubrication Pump Group Container Assembly Now Available As A Serviceable Part {7540,7510}

1997/02/24 Resetting Event Recorder And Service Lamp For VIMS {7601}

1997/02/24 Information Needed For VIMS Support {7601}

1997/03/03 Service Manual, SENR8457, "Challenger 35, Challenger 45, Challenger 55 Agricultural Tractors Tooling And Parts Serviceability For Electrical Connectors" Now Available {0350,1400}

1997/03/03 Revised Service Manual Module For Transmission Electronic Control Available {3168,3030}