1985/07/01 Caterpillar


New Oil Seal And Coolant Seal Group Improve Service Life Of Engine Water Pump

Usage:


3406B Industrial, Marine and Generator Set Engines

Reference: The article "Inspection And Installation Procedures For Water Pump Shafts And Seals" in this issue gives additional information on installation of coolant seals in the engine water pump.

Description of Change: A new oil seal and coolant seal group are used in the engine water pump on the above engines. The new oil seal (see illustration) is made of a different material that is more resistant to heat damage and gives improved service life. Also, the carbon seal assembly, part of the coolant seal group, has a tighter fit on the water pump shaft that helps prevent the seal from spinning on the pump shaft.

NOTE: Use the information in the Reference Article to avoid damage to the seal groups during installation.

Adaptable As: The new 8T1361 Oil Seal and 4W3864 Coolant Seal Group are direct replacements for the former 5P1713 Oil Seal and 2W9101 Coolant Seal Group respectively. The new oil seal is in effect as shown in Chart A. The new coolant seal group is in effect as shown in Chart B.


Location of oil seal and coolant seal group.

Caterpillar Information System:

1985/07/01 Self-Powered Hour (Service) Meter Group Available
1985/07/01 Fuel Filter Service Indicators Now Available
1985/07/01 New Cylinder Blocks Permit The Use Of One Positive Crankcase Ventilation (PCV) Valve
1985/07/01 Inspection And Installation Procedures For Water Pump Shaft And Seals
1985/07/01 Breather Element Added To PCV Valve
1985/07/01 New Cylinder Heads And Fuel Nozzle Adapters Used
1985/07/01 Engine Serial Number Plate Has New Location
1985/06/01 Successful Settlement Reached Between Caterpillar Tractor Co. And Industrial Parts Depot, Inc.
1985/06/01 Substantial Price Reduction For Caterpillar Remanufactured Short Blocks
1985/06/01 Hunting Down The Cheaters
1985/06/01 List Of Service Publications
1985/06/01 Clamps Removed From Turbocharger Oil Lines Group
1985/07/01 Oil Filter Inspection Can Save Additional Internal Engine Damage
1985/07/01 Orifice Fitting Or Snubber Can Help Stop Erratic Fuel Gauge Operation
1985/07/01 New Part Numbers Designate Crankshaft Use
1985/07/01 Battery Disconnect Switch Stops Battery Drain
1985/07/01 Oil Pump Flow Increased
1985/07/01 How To Reduce Costs And Increase Marine Engine Life
1985/08/01 Tachometer Drive Is Now An Attachment
1985/08/01 Correct Location And Rotation Of Front Timing Gears
1985/08/01 Engine Rotation Can Be Changed On 3500 Series Engines
1985/08/01 Remanufactured Cylinder Head Group For NA Engines Must Not Be Installed On T Engines
1985/08/01 Thread Lock Now Used On Timing Advance Bolts
1985/08/01 Head Gasket Replacement Procedure
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