1979/11/05 Caterpillar

Correct Installation Of Track Shoe Nuts{4170,4179}

Usage:

All Track-Type Machines

According to field reports, information now available about installation of track shoe nuts is not clear. These nuts are made with round edges on one side, and a larger radius all around the other side. The side with the round edges has the most flat surface area, and this side must be installed next to the track link. The round edges fit into the notch of the track link to prevent rotation of the nut when the bolt is tightened. The opposite side of the nut (with the larger radius) will not fit tightly in the track link notch, and can possibly work loose. Be sure to install the nuts with the side that has the largest flat surface next to the track link as shown in the illustration.

Opposite sides of track shoe nuts.

Track shoe nuts correctly installed.

Caterpillar Information System:

1979/10/29 New Repair Kit Is Available For Service Of Hydraulic Jack {0642}

1979/10/29 Use The 6V2034 Micrometer Adapter To Measure Lip Thickness Of Engine Valves {0653,1105}

1979/10/29 New Top Piston Ring Has Plasma-Coated Face {1215}

1979/10/29 New--3208 Engine Maintenance Tips Wall Chart {0374,1000}

1979/10/22 Different Thrust Bearing And Thrust Rings Now Used In Turbochargers{1052,1053}

1979/10/22 New Shaft Used In Fan Drive Group{1359}

1979/10/22 Steel Shims Are Now Used To Adjust The Preload On The Front Wheel Bearings{4208,4200}

1979/10/22 Voltage Regulator Can Cause Variable Ammeter Indications{1410,1401,1405,1406,7467}

1979/10/22 New Connecting Rod Is Tapered In Piston Pin Area{1218}

1979/10/22 New Valve Rotator And New Oil Shield Are Available{1104,1105,1109}

1979/10/22 Size Of Glass Beads Is Important When Used To Clean Engine And Turbocharger Parts{0670,1052,1053,1077,1105,1214}

1979/10/22 More Studs Used To Hold Transmission To Bevel Gear Case{3064,3150,4059}

1979/11/05 Two Plug Assemblies (Booster Cables) Are Available To Start Machines{1401,1453}

1979/11/05 Wider Connecting Rods Have More Bearing Area{1214,1218}

1979/11/12 Puller Studs Of Same Size Can Have Different Work Capacities{0621}

1979/11/12 New Air Cleaner Group Keeps Rain Out Of Cleaner{1051,1054}

1979/11/26 More Potting Material Now Used In 6N5906 Electric Service Meter{7480}

1979/11/26 Batteries Can Be Damaged If Too Much Vacuum Is Used During Electrolyte Fill{1401}

1979/11/26 New Cylinder Block Has More Material Around Liner Seat Area{1201}

1979/11/26 Former Oil Pump Group Is Now Used Again{1304}

1979/11/26 Fabricated Tester For Regulator-Exciter Control Assemblies Used On SR-4 And SRCR Generators{0652,4451,4452,4454,4467}

1979/12/10 Improved 6V2012 Micrometer Depth Gauge Set Has Increased Range To Permit Deeper Measurement{0653,5070}

1979/12/10 Improvements Made To Fuel Injection Pump And Governor Group{1253,1281}

1979/12/10 New Cylinder Heads Are More Rigid And Stronger{1100}