1984/09/03 Caterpillar

Improved Service And Parking Brake Groups Have More Bolts{4267,4251,4250}

Usage:

772B, 776 Tractors;
773B, 777 Trucks

Description of Change: More bolts are now used to hold the brake anchor and ring together in the service and parking brake groups on the above machines. The number of bolts was increased from 26 to 35 per side on the 772B Tractors and 773B Trucks and from 44 to 51 bolts per side on the 776 Tractors and 777 Trucks.

The increased number of bolts in the service and parking brake groups will help prevent loosening which may occur in severe applications. It will also provide a better joint between the brake anchor and ring.

Adaptable As: The improved service and parking brake groups are in effect with 772B Tractors 64W168-Up, 773B Trucks, 63W1286-Up, 776 Tractors 14H214-Up and 777 Trucks 84A1342-Up.

The parts needed to install the new anchors, rings and plate are shown in the chart.

Caterpillar Information System:

1984/09/03 Specifications And Rack Adjustment For Variable Horsepower Fuel Systems{1251,1257,1250}

1984/09/03 O-Ring Seals For Steering Hand Metering Pump Groups Available For Parts Service{4312,4300}

1984/09/03 New Inlet Valve Used{1105}

1984/08/20 New Air Dryer Group Used{4285}

1984/08/20 New Thermistor Thermometer Group Can Be Ordered At Less Cost{0651,0653,0650}

1984/08/20 Install Dampers And Check Stud Alignment After Radiators Are Rebuilt{1353,1381}

1984/08/13 New Fuel Injection Pumps, Fuel Injection Lines, Fuel Injection Nozzles, and Piston And Rod Groups Used On Some Engines{1000,1225,1251,1252,1254}

1984/08/13 New Lock Pin Used In Nitrogen Actuator Assembly{7401}

1984/08/13 Checking And Adjusting Travel Drift{5058,5063}

1984/08/13 New Films (Decals) Available For Service Meter Face{7478,7480}

1984/08/13 New Service Tools Available{0600}

1984/08/13 New Pipe Nipple Used In Fire Suppression Cylinder And Valve Group{7401}

1984/09/03 Use Of Teflon Sealant Makes It Easier To Replace Water Heater Elements{1383}

1984/09/03 Low Maintenance High Output Batteries Are Now Standard Equipment{1401}

1984/09/03 Tune-Up Kit And Remanufactured Nozzles Available{1254,1074,1107}

1984/09/10 The 6V4050 Transmission Shift Analyzer Will Help Quickly Isolate Shifting Problems{0785,3168}

1984/09/10 Improved Cylinder Heads And Valve Covers Used{1107,1101}

1984/09/10 New Hardware Is Used To Hold Mirrors In Position{7319}

1984/09/17 New Service Tools Available{0600}

1984/09/17 Replacement Circle Guide Shoes And Bronze Alloy Wear Strips Available For Parts Service{6150,6154,6155}

1984/09/17 New Gauge In The 1P545 (Tire) Gauge Group Has Dual Scales [kPa (psi)]{0600}

1984/09/17 Correct Installation Of Fuel Injection Pumps Can Prevent Fuel Leaks{1251,1253}

1984/09/17 Exhaust Heating Of Additional Areas Of The Body{7258}

1984/10/01 Correct Use Of The 6V4141 Sleeve Metering Calibration Tool Group{0600,0766,0778}