New, Corrosion Resistant Water Pump Shaft Available
Usage:
All 3400 Series Industrial, Marine and Generator Set Engines
Description of Change: A new water pump shaft is available for the above engines. The new shaft is more resistant to corrosion than the former shaft.
Adaptable To: The new 7W1821 Water Pump Shaft is a direct replacement for the former 6N139 Water Pump Shaft in all applications.
Caterpillar Information System:
1985/08/01 Hardened Washers Used In Engine Oil Lines; Locks Removed From Oil Pump
1985/08/01 Change To Astern Drive Shaft Reduces Horsepower Loss And Improves Ahead Clutch Cooling
1985/08/01 Problems Caused By Electric Governors That Are Not Supplied By Caterpillar
1985/08/01 Extra Injection Nozzle Clamp Helps Prevent Injection Nozzle Damage
1985/08/01 Rough Handling Can Move Droop Lever Out Of Position
1985/08/01 Eliminating Interference Between Governor Housing And Tachometer Drive
1985/08/01 Thread Sealant Must Be Used On Air Compressor Mounting Bracket Bolts
1985/08/01 New Service Tools Available
1985/08/01 Head Gasket Replacement Procedure
1985/08/01 Thread Lock Now Used On Timing Advance Bolts
1985/08/01 Remanufactured Cylinder Head Group For NA Engines Must Not Be Installed On T Engines
1985/08/01 Engine Rotation Can Be Changed On 3500 Series Engines
1985/08/01 New Type Of Paint Used On Some Caterpillar Products; Do Not Weld On Painted Surfaces
1985/08/01 Use Care When Handling Water Seals For Cylinder Head Spacer Plates
1985/08/01 Stronger Push Rod Used
1985/08/01 Location Of 6V5135 Setscrews In Fuel Pump Group
1985/08/01 Valve Mechanism Groups Use New Lifter Assemblies
1985/08/01 Special Instruction Available To Salvage Governor Housing
1985/08/01 New Fuel Pump And Governor Drive Shaft Has Pressure Lubrication For Splines
1985/08/01 Substantial Price Reduction For Caterpillar Remanufactured Short Blocks
1985/09/01 Adjusting Pneumatic Speed Control For Correct Operation
1985/09/01 Changes To Fuel Systems
1985/09/01 Use Correct Valves When Rebuilding Engines
1985/09/01 Oil Pump Groups Improved