Correct Torque for Piston Retaining Bolts In Front Suspension Cylinder Group {7201}
Usage:
769D (5TR) Off-Highway Trucks;
771D (6JR) Quarry Trucks
Reference: Service Manual module, SENR1422, Disassembly And Assembly, 769D Truck and 771D Quarry Truck; Page 48.
The tightening torque, 85 ± 15 N·m (63 ± 11 lb ft) for the piston bolts, shown in SENR1422 for 130-3921 Front Suspension Cylinder Group, is incorrect. The correct torque is 135 ± 20 N·m (100 ± 15 lb ft).
130-3921 Front Suspension Cylinder Group (1) Piston Bolt (10 each).
Caterpillar Information System:
1998/02/02 New and Improved Wear Rings Prevent Binding Of Hoist Cylinder Group {5102}
1998/02/02 Special Instruction, REHS0172, "Off-Highway Tractor And Truck Front Strut Frame Casting Replacement", Is Now Available {0374,0755}
1998/02/02 New Fan Group Improves Window Defrosting {7309}
1998/02/02 Metering Pump And Seal Kit Part Numbers Available For Backhoe Loaders {4312}
1998/02/02 Updated Steering Pump Groups And Seal Kits {4312}
1998/02/02 New Seal Kit for Metering Pump Groups {4312}
1998/01/26 Caterpillar Electronic Technician (ET) Training Video Available {0374}
1998/01/26 Be Sure To Correctly Tighten 1R-0712, 1R-0740, 1R-0749, 1R-0750, 1R-0751, 1R-0753, And 1R-0759 Fuel Filter Assemblies {1261}
1998/01/26 Improved Water Seal Reduces The Possibility Of Cylinder Head Joint Water Leaks {1100}
1998/01/26 Explanation Of New Switch Operation For Kickout Positioner {5109}
1998/01/26 Service Repair Kits For Steering Column Group Available {4310}
1998/01/26 The 154-6732 Pump Kit Is Available To Help Service The Unit Injector Hydraulic Pump Group On 3408E (99C) And 3412E (80M) Machine Engines {1714}
1998/02/02 High Pressure Washer Available For Final Drives And Axle Housings Of Off-Highway Trucks {0680,4050,3260}
1998/02/02 Jacobs Engine Brake Parts Service Now Available {1129}
1998/02/02 Improvements To Brake Caliper Seals Prevent Leaks In High Temperature Applications {4256}
1998/02/02 Remaining Problems In VIMS-PC V2.4 {7601}
1998/02/02 New Exhaust Elbow Used In Air Lines Group To Help Prevent Exhaust Leaks {1061}
1998/02/02 Revised Labels For Service Manual, SENR6780, Volumes I and II Are Available {0374}
1998/02/02 New Lip Seal Available {3030,3075}
1998/02/02 Neutralizer Switch Corrected For Transmission Electronic Control System {3030,3168}
1998/02/02 New Air Conditioning Accumulators Improve Service Life {7309}
1998/02/02 Machine Flash Software (Non-Engine Software) Ordered Through The Parts Distribution System Is Now Available Through The Corporate Mail Box {1900,1920}
1998/02/09 Service Charts And Decals Available {0374,0375}
1998/02/09 Improved Limited Slip Differential Thrust Washers And Hardened Discs Improve Service Life {3263}