New Crankshaft Seal Groups Used On More 3400 Series Engines{1160,1161}
Usage:
Reference: Service Magazine, November 1, 1982, Page 4, "New Crankshaft Seal Groups Used".
Description of Change: The reference article tells of new crankshaft seals used in some 3406 Engines. The new crankshaft seals are used on more models of 3400 Series Engines.
Adaptable As: The new 2W1733 (front) and 2W1734 (rear) Crankshaft Seal Groups are direct replacements for the 7N1999 Crankshaft Seal Group in these applications.
Special Instruction, Form SMHS8507, comes with each new seal group. A new Special Instruction, Form SMHS8508 has installation information and a list of the tools needed to install the new seals.
Caterpillar Information System:
1985/03/11 Installation Of Heli-Coils In Holes With Damaged Threads{0600,0670,0671}
1985/03/11 Cross Link Between Fuel Racks Has Smoother Surface{1250,1257}
1985/03/11 New Air Cleaner Element Creates Less Restriction{1054}
1985/03/04 Do Not Weld On Painted Surfaces{0350,0679}
1985/03/04 Exhaust Clamp Nut Now Serviced Separately{1061}
1985/03/04 3208 Truck Engine Service Manual Available In Spanish{0375}
1985/03/04 Discontinued D.C. Generators Replaced By Alternators{1404,1405}
1985/03/04 New Water Cooled Exhaust Manifold Elbows And Rear Manifold Are Used{1059}
1985/03/04 3406B Truck Engines Have Been Improved For 1985{1000,1050,1052,1100,1200,1250}
1985/03/04 Use The Correct Oil In Natural Gas Engines{1318,0374}
1985/02/18 Low Maintenance High Output Batteries Are Now Standard Equipment{1401}
1985/02/18 New Drive Coupler Kit Used On Altronic Magneto{1552}
1985/03/11 New Cooling System Temperature Regulator Available{1355}
1985/03/11 Dowtherm 209 Full-Fill Coolant{1350}
1985/03/11 Input Shaft And Flange Available As An Assembly; Makes Alignment Easier{3303}
1985/03/18 New Service Tools Available{0600}
1985/03/18 Internal Seals In 7000 Series Fuel Injection Nozzles Cannot Be Replaced{1254}
1985/03/18 New Service Manual Binders Are Made From Thicker Material{0375}
1985/03/18 Remanufactured Bare Cylinder Heads (U.S. And Canada){1101,7754}
1985/03/18 Improved Oil Ring For Pistons Eliminates Expander Problems That Lead To Ring Breakage During Installation{1215}
1985/03/25 Changes To Turbocharged Truck Engines For 1985{1000,1050,1052,1100,1200,1250,1252}
1985/03/25 New Main Shaft Bearing Assembly Has Reduced End Play{3306}
1985/04/01 Use Of Fuel Injection Timing Information In The "Fuel Setting And Related Information" Microfiche{0600,0782,1250}
1985/04/01 Improved Vibration Damper Guard Group Has Flexible Mounting{1205,1200}