1985/04/22 Caterpillar

Covers And Tandem Group Changed{4064,4062}

Usage:

120G Motor Graders

Description of Change: The covers and tandem group used on 120G Motor Graders has been changed. Formerly, the tandem housings used studs and nuts to fasten the final drive and the brake and wheel spindle housings together. Now bolts are used.

Adaptable As: The new 8W452 and 8W453 Housing Assemblies are direct replacements for the former 6G579 and 6G580 Housing Assemblies used in the 8D8830 Covers and Tandem Groups on 120G Motor Graders. The new housing assemblies are in effect with 87V7403 and 11W1187; and are adaptable to earlier machines. When the new housing assemblies are installed, the new bolts and washers, listed in the chart, must also be used.

NOTE: Put a thin coat of 5P3413 Pipe Sealant on the new bolts before they are installed in the new housing assemblies.

The former housing assemblies can be reworked. Remove the studs which have taper threads. Tap the holes, where the studs were installed, to fit the new bolts.

Caterpillar Information System:

1985/04/22 FT1953 Gauge For Track Assembly{0600,0760}

1985/04/22 Correct Installation Of Oil Sequence Valves{1304}

1985/04/22 New Camshafts Used In SAE Standard [CCW] Rotation Engines{1200,1210}

1985/04/22 New Lamp Group Gives More Uniform Lighting{7300,7309}

1985/04/22 O-Ring Face Seal Fittings Available{5050,5057}

1985/04/22 Replace Grease Relief Fittings During Repair Of Front Suspension Cylinders{7200,7201}

1985/04/08 Constant Torque Hose Clamps Available For General Use{7550,7553}

1985/04/08 Track Group Shipping Clamps Are Available Through The Parts Distribution System{4170}

1985/04/08 Hardened Spacers Help Keep Bolts Tight{1063}

1985/04/08 New Outer Governor Spring And Torque Control Pin Used In Governor And Pump Groups{1264}

1985/04/08 Electric Hour Meter Failures{7450,7478}

1985/04/08 Preferred Locations For Water Temperature Protection Devices{7403,7417,7420}

1985/04/22 New Duo-Cone Seal Installer Is Available{0600,4051}

1985/04/22 New Pins Used In Truck Body Group{7258}

1985/04/29 Scarifier Mounting Can Be Modified To Prevent Loosening{6150,6162}

1985/04/29 Installing New Copper Bonded Bearings Can Extend Engine Life{1230,1203,1219}

1985/04/29 Special Pricing On Metric Hand Tools For U.S. And Canada Only{0600,0601,0602}

1985/04/29 Visual Inspection Can Detect Chrome Plated Engine Valves{1105}

1985/04/29 Snubber Used To Protect Fuel Pressure Switch{1274}

1985/04/29 New Lever Available For Exhaust Piping Group{1061}

1985/05/06 Installation Instructions For New Magnetic Switch{1408}

1985/05/06 New Battery Cable Crimping Die Available{0600}

1985/05/06 New Bearing Housings Available For Turbochargers{1052,1053,1056}

1985/05/06 Folded Core Radiators Used In Cooling Systems{1353,1350,1351}