1980/01/21 Caterpillar


New Fuel Injection Nozzle Assembly Used{1254}

Usage:


3304 and 3306 Industrial, Marine and Vehicular Engines

Description of Change: A new fuel injection nozzle assembly is used on 3304 and 3306 Engines except 3306 Truck Engines. The new nozzle assembly uses an improved spring retainer which has a smoother wear surface. The new nozzle assembly will give a longer service life.

Adaptable To: All earlier 4.75" bore engines. The new fuel nozzle assemblies shown are not available for parts service separately. They are a part of the fuel valve service groups which are available for these engines.

Caterpillar Information System:

1980/01/21 Extended Shafts Now Available For Front Power Takeoff Units{3055}
1980/01/21 Cooling System Improvements Prevent Expansion Tank Leakage{1354,1380,1153}
1980/01/21 New Piston Groups Have The Piston Pin Bore Off-Center, Away From The Thrust Side Of The Piston{1214}
1980/01/21 A Spring With A Lower Rate Is Now Used In The Fuel Filter Group To Give Less Fuel Pressure{1261}
1980/01/14 New Raw Water Engine Oil Cooler Is Used{1378}
1980/01/14 Use The FT1481 Bracket To Hold The 1P2371 Micrometer In Position During Bore Size Measurement{0655,0663}
1980/01/07 Improved Ring Seal Used At Rear Of Crankshaft {1161}
1980/01/07 8N1831 Fuel Nozzle Assembly Now Approved For Use In 1693 Truck Engine; Chart For Applications Of 8N1831 And 7N5005 Fuel Nozzle Assemblies {1254}
1980/01/07 Important: XT3 And XT5 Hose Assemblies Must Be Fabricated And Installed Correctly For Maximum Service Life {5057}
1980/01/07 New Exhaust Valve For Special Engine Applications {1104,1105}
1980/01/07 Fuel Heaters Are Now Available For Field Installation {1296}
1980/01/07 Do Not Use 5B1161 Wire To Check Main Bearing And Connecting Rod Bearing Clearances; Use Plastigage {0653,1203,1219,1230}
1980/01/28 New 6V199 Socket For Use On Fasteners In Areas With Limited Clearance{0612}
1980/01/28 Installation Procedures For 5N5880 Remote Shut-Off Group And 5N6336 Oil Pressure Indicator Gauge Group{7418,7403,7455}
1980/01/28 New Attachment Air Compressor Group and Lines Groups Have Improved Design{1065}
1980/01/28 Oil Drain Hole Added To Spacer Plate Cylinder Block To Permit Use Of Scroll Fuel System{1201,1221}
1980/02/04 New Cylinder Liner Has Improved Design To Keep Liner Temperatures Lower{1216}
1980/02/04 Change To Gear On Accessory Drive Shaft Assembly Gives Longer Service Life{1207,1206}
1980/02/04 Real Value Available Through Caterpillar Remanufacturing Programs{0374}
1980/02/11 Warning: Avoid Use Of Fuel Mixtures Of High Volatility. If You Are Exposed To Such Mixtures, Be Aware Of The Hazards Involved And Take Proper Precautions{1280}
1980/02/11 Use The Correct Water Temperature Contactor{1350,1100}
1980/02/25 How To Check Operation Of Hydramechanical Shutoffs On D379B, D398B, D399 Engines{7418}
1980/02/25 Revision Of Special Instruction Form No. SMHS7267, "Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets" Has Important Changes{1307}
1980/02/25 Stronger Braces Used Between Air Cleaner And Engine{1051}
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