1997/10/06 Caterpillar

New Cab Mount Reduces Vibration{1710}

Usage:

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

Description of Change: A new cab mount is now used. The new mount is constructed of new materials but otherwise is identical to the former mount.

Adaptable To: The new 137-8532 Mount Assembly is a direct replacement for the former 3W-6716 Mount Assembly. The new mount assembly is effective with Challenger 65D (2ZJ2509), Challenger 75D (5AR520), and Challenger 85D (4GR786) Agricultural Tractors. The new mount assembly is adaptable to Challenger 65C (2ZJ1-Up), Challenger 70C (2YL1-Up), Challenger 75 (4CJ1-Up), Challenger 75C (4KK1-Up), and Challenger 85C (9TK1-Up) Agricultural Tractors.

NOTE: There are eight mounts per machine. DO NOT intermix the two designs.

Caterpillar Information System:

1997/10/06 Higher Capacity Fan Belts Now Used{1350,1356,1359}

1997/10/06 Fuel Tank Filler Screen Available{1273,1710}

1997/09/29 Handling Instructions For Water Pumps{1361}

1997/09/29 Bumper Spring Prevents Over Travel Of Handle For Pilot Valve Group{5059}

1997/09/29 Gussets Are Added To Oil Pan Assemblies{1302}

1997/09/29 New Metal Guards Prevent Debris From Entering Into Cab{7310}

1997/09/29 New Hoist Cylinder Seals And End Cap Now Available For Service Repair{5102}

1997/09/29 Sensor Group-Suspension Control Is Improved With Increased Reliability And Moisture Resistance{1400}

1997/09/29 Service Manual Modules; SENR8609, "Schematic 769D Truck And 771D Quarry Truck Electrical Schematic". SENR1418, "Schematic 773D Truck And 775D Quarry Truck Electrical Schematic". These Service Manual Modules Are Found In Service Ma

1997/09/29 Hose Assembly Change To The Front Brake Breather Lines Group{4257}

1997/09/29 Torque Converter Tubing Improvement Provides Clearance {3103}

1997/09/29 Improvement To Air Conditioning Lines Group In The 793C Off-Highway Trucks For Reduced Engine Removal And Installation Time{1808,1809}

1997/10/06 New Fan Drive Absorber Increases Service Life{1358}

1997/10/06 New 100 Amp Alternator Now Available{1405}

1997/10/06 Shaft Seal Leaking In Implement Pump Groups{5070}

1997/10/06 Rotated Cylinder Cap Changes Location Of Hydraulic Line To Protect Line On Blade Lift Cylinder Group{5057,5102}

1997/10/06 New Cab Positioning Procedure For 24H Motor Graders{7301}

1997/10/06 New Differential Lock/Unlock Indicator Light Now Used With H-Series Update{7450,3264,3270}

1997/10/06 Improvements Made To H-Series Motor Graders{7475,1408,1429,3073,7304,7309,7450,7451}

1997/10/06 New Special Edition Is Available For 784B Tractor; 785B, 789, 789B, 793, 793B, and 793C Off-Highway Trucks{0374}

1997/10/06 New Special Edition Is Available For 768C, 772B, 776C, and 776D Tractors; 771C, 771D, And 775D Quarry Trucks; 769C, 769D, 773B, 773D, 777C, And 777D Off-Highway Trucks{0374}

1997/10/06 Resistor Harness Reduces Fan's Speed Sensor Faults{1408,1356,1350,1000}

1997/10/06 Orifice Plate Can Be Removed From 8X-0234 Oil Cooler Lines Group In 793 And 793B Off-Highway Trucks{4257,1365}

1997/10/06 New End Covers Eliminate Seal Spacer Plates For Steering Control Valve Group{4307}