New Plastic Impeller Will Help Improve Service Life Of Water Pump Seal
Usage:
All 3406 Truck Engines
Description of Change: A new water pump group is now used on all 3406 Engines. The new water pump group has a new plastic impeller. This new impeller is lighter in weight, which will decrease the amount of force put on the water pump seal. This will improve the service life of the water pump seal.
Adaptable As: The new 1N2959 Water Pump Group is a direct replacement for the former 2W3277 Water Pump Group. Only the impellers in these two groups have changed. The new 5N7438 Impeller is a direct replacement for the former 2W3276 Impeller.
Caterpillar Information System:
1984/02/15 Fuel System Manual Bleed Valve Removed; Drain Lines Group Added
1984/02/15 New Water Temperature Regulator Helps Prevent Engine Overcooling
1983/12/21 Replacement Valve Guides Can Be Used To Recondition Cylinder Heads
1983/12/21 FT1808 Cable Permits Easier Use Of 6V2100 Multitach To Check Engine Or Alternator RPM
1983/12/21 Sleeve Can Be Used For Reconditioning The Mounting Bore For The Fuel Pump Housing In The Cylinder Block
1983/12/21 Use Correct Serial Number For Remanufactured Engines
1983/12/21 Water Pump Housing Is Now Available For Parts Service
1983/12/21 Cooling System Conditioner Helps Prevent Cavitation Damage
1983/12/21 Mixture Of Inch And Metric Fasteners To Be Used
1983/12/21 6V4163 Bit And 6V4164 Driver Now Available For Removal Of Bolts For Flyweight Carrier
1983/12/21 Correct Installation Of New Valve Springs
1983/12/21 Crankshaft Failures
1984/02/15 Correct Wiring And Fuse Must Be Used For Correct Operation Of Shut-Off Solenoid Group
1984/02/15 New Service Center For 6V2192 Injection Transducer
1984/02/15 New Cylinder Head Assembly Made With A Different Material
1984/02/15 Remanufactured Connecting Rod Assemblies
1984/02/15 Procedure To Remove Sharp Edges From Fuel Racks
1984/02/15 Some Crankshafts Must Be Tufftride Hardened After A Regrind
1984/02/15 New Service Tools Available
1984/02/15 Remanufactured Cylinder Head Assemblies
1984/02/15 Parts Service Information For Pistons
1984/02/15 3406B Truck Engines Available
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1984/02/15 List Of Service Publications