1994/09/26 Caterpillar

Tensioner Group Pin May Be Difficult To Remove{4197}

Usage:

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

During service, the 8R-1693 Pin Assembly is difficult to remove. Often, the pin must be driven or cut out since there is no means to use a puller. Pin removal can be aided by the use of a 8T-7792 Mini Torch. This mini torch is the prefered tool for shrinking stuck pins to enable quick removal.

Antiseize material is now being applied to the pin and bore at the factory. When servicing the pin, apply antiseize material to the pin and bore before assembly to insure ease of pin removal next time service is required.

This applies to the 3W-5059 Tensioner Group for Challenger 65 & 65B (7YC) and Challenger 75 (4CJ) Agricultural Tractors and to the 9U-1844 Tensioner Group for Challenger 65C (2ZJ), 70C (2YL), 75C (4KK), and 85C (9TK) Agricultural Tractors.

Caterpillar Information System:

1994/09/26 Improved Lamp Body Now Available{1429}

1994/09/26 Caterpillar Legendary Service Literature Catalog SELD0811 Updated{0374}

1994/09/19 Caterpillar Introduces New Long Life Heavy Duty Engine Coolant{1395}

1994/09/19 Reinforcement Of Boom Lift Cylinder Bracket{6460}

1994/09/19 New Gasket Material Used To Seal Bearing Housing to Drum And Procedure To Check Flatness Of Drum Head{6605}

1994/09/19 Special Instruction SEHS9567 Is Available For Installing Oil Baffles In The 6WD Transfer Gearbox To Prevent Overheating{3250,3011,3000}

1994/09/12 New Gasket Use In The Water Lines Group {1380}

1994/09/12 Improved Fuel Pump Bonnet Seal Has Better Heat Resistance {1251}

1994/09/12 New Seals In Pump Fastener Group And Fuel Injection Pump Group Have Improved Heat Set Resistance {1251}

1994/09/12 New Fuel Priming Pump Assembly Used In Fuel Priming Pump Group {1258}

1994/09/12 New Spring On Fan Belt Tightener Provides Longer Service Life {1358}

1994/09/12 Procedure To Bleed And Charge The Rear Suspension {7213}

1994/09/26 New Spring Retainer Used In Main Hydraulic Control Valves{5051}

1994/09/26 New Gears Are Available To Reduce Transfer Gear Noise Levels{3159}

1994/09/26 Muffler Group and Exhaust Piping Groups Changed To Provide A New Slip-Fit Muffler{1062,1061}

1994/09/26 Bolts Are Now Used In The Steering Linkage Group/Torque Specification Has Been Raised{4305}

1994/09/26 Maintenance Guidelines For Exhaust Bypass Group{1057}

1994/09/26 New Hitch Seal And Retaining Ring Used In Rear Frame Groups Reduces Hitch Face Wear{7051}

1994/09/26 Engine Maintenance Check Deleted{1100}

1994/09/26 Arc Suppressors Improve Life of Air Conditioner Thermostatic Switch{7337}

1994/09/26 Exhaust Dust Ejector Operation{1055,1068}

1994/09/26 New Gears Reduce Noise And Pipe Plugs Make Installation Easier In Auxiliary Drive Group{1150,1165}

1994/09/26 New Gasket Provides Improved Sealing Between Air Compressor And Drive{1803}

1994/10/03 New Flexible Lines Used In Aftercooler Water Lines Group{1380,1063}