Hardened Spacers Help Keep Bolts Tight{1063}
Usage:
All 3406 And 3406B Engines Equipped With An Aftercooler
Description of Change: New hardened spacers are now used in the water aftercooler groups on 3406 and 3406B Engines. These new spacers help keep the mounting bolts tight.
Formerly, soft spacers and hardened washers were used with mounting bolts. These soft spacers did not keep the correct torque on the mounting bolts when they were tightened. This would permit the bolts to work loose.
Adaptable As: The new 7W3447 Spacer is a direct replacement for the former 8B2026 Spacer and 8M9024 Washer in the aftercooler groups.
Caterpillar Information System:
1985/04/08 Changes To Naturally Aspirated Truck Engines For 1985{1000,1200,1214,1218,1250,1251,1254}
1985/04/08 Crankcase Explosion Relief Valve Kit Available{1200,1233}
1985/04/08 New Outer Governor Spring And Torque Control Pin Used In Governor And Pump Groups{1264}
1985/04/08 Additional Zinc Rods Improve Service Life Of Sea Water Heat Exchanger{1379}
1985/04/08 Several Types Of Automatic Voltage Regulators (AVR) Used In SR4 Generators{4450}
1985/04/08 Differential Oil Pressure Gauge For Oil Filter Shows High Differential Pressure{1300,1306,1315}
1985/04/08 Electric Hour Meter Failures{7450,7478}
1985/04/08 Preferred Locations For Water Temperature Protection Devices{7403,7417,7420}
1985/04/08 Changes To Exhaust Manifolds Help Prevent Broken Studs{1059}
1985/04/01 More Tools Added To 6V9413 Custom Track Service Tool Kit{0600}
1985/04/01 New Turbocharger Oil Supply Tube Assembly Used{1052,1307}
1985/04/01 New Lubricator Tip Available For Track Seal And Lubrication Testing Group{0600,0645}
1985/04/08 Make Sure Air Cylinder For Governor Actuation Is Correctly Adjusted{1269}
1985/04/08 Track Group Shipping Clamps Are Available Through The Parts Distribution System{4170}
1985/04/08 Constant Torque Hose Clamps Available For General Use{7550,7553}
1985/04/22 New Camshafts Used In SAE Standard [CCW] Rotation Engines{1200,1210}
1985/04/22 Correct Installation Of Oil Sequence Valves{1304}
1985/04/22 FT1953 Gauge For Track Assembly{0600,0760}
1985/04/22 New Ring (Seal) Used In Clutch Piston{3354}
1985/04/29 Installing New Copper Bonded Bearings Can Extend Engine Life{1230,1203,1219}
1985/04/29 Extended Oil And Oil Filter Change Intervals{1300,1318}
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}
1985/05/06 Exhaust Manifolds Now Use Locks And High Temp Bolts{1050,1059}