1982/10/27 Caterpillar


Fuel In The Cooling System Or Coolant In The Engine Oil Can Result From Cracked Fuel Nozzle Adapter

Usage:


All 3406 And 3408 D.I. Truck Engines

Reference: Truck Engine News, February 17,1982, Page 3. The article "New Fuel Nozzle Adapter Assembly Used," tells about the release of new fuel nozzle adapters. These new fuel valve adapters were released because of problems with cracks in the former adapters.

When troubleshooting the above engines, remember that fuel in the cooling system or coolant in the engine oil are two common indications of a fuel nozzle adapter failure.

It may save troubleshooting time on these engines, if the fuel nozzle adapters are checked for cracks first. If the adapters have cracks, they will normally be in the area of the threads.

Some other possible indications of an adapter failure are fuel in (dilution of) the oil, coolant leakage into the cylinders, and a large amount of bubbles in the radiator.

Caterpillar Information System:

1982/10/27 Wider Crankshaft Gear Used
1982/10/27 New Oil Additives Can Cause High Copper (cu) Indications During S.o.s. Tests
1982/10/27 Dial Bore Gauge And Size Setting Fixture Available
1982/10/27 Indications From 6V3100 Timing Indicator Group Must Be Corrected For Some Applications
1982/10/27 Service Information For Easier Use Of The 6V3100 Timing Indicator Group
1982/10/27 Engine Slobbering; New Piston And Rings Used
1982/10/27 New Fasteners Used For Fuel Injection Lines
1982/10/27 Extended Storage Procedures
1982/10/27 Field Conversion Procedure For Epa Certified On-highway Truck And On-highway Vehicle Engines
1982/10/27 Cold Weather Engine Operation
1982/10/27 List Of Service Publications
1982/10/27 FT1698 Driver Can Be Used For Reconditioning Of Governor Housing
1982/10/27 New Fuel Nozzle Test Sheet Available
1982/10/27 Additional 3208 Remanufactured Truck Engines Available
1982/10/27 Bulged Capsule-type Fuel Nozzles
1982/10/27 Changes In Engine Rpm; Governor Does Not Operate Correctly
1982/12/08 Make Change To 6V2100 Multitach And 5P9698 Calibrator
1982/12/08 New Seal Used On Governor Control Shaft
1982/12/08 New 6V7059 Micrometer Measures Liner Top Flange And Valve Lip
1982/12/08 6V6142 And 6V6143 Installers Can Be Used To Install Crankshaft Seals And Wear Sleeves
1982/12/08 Service Parts Available For The 5P4150 Nozzle Testing Group
1982/12/08 New Crankshaft Seal Groups Used
1982/12/08 6V4869 Adapter And 6V6174 Plug Can Be Used To Install Camshaft Bearings
1982/12/08 Resurfaced Cylinder Blocks And Heads
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