1977/05/09 Caterpillar

New Fuel Nozzle Assembly Available{1254}

Usage:

All 1100 and 3100 Series Engines;
613 Tractor;
225 Excavator with 3100 Series Engines

Description of Change: A new fuel nozzle is available for the above engines. This new nozzle has a screw-type pressure adjustment. The nozzle used formerly had shim-type pressure adjustment. The change was made to give pressure adjustments similar to those of the fuel nozzles in 3208 engines.

Adaptable As: The 9N2366 Fuel Injection Nozzle Assembly is a direct replacement for the 9L7883 Nozzle Assembly, which is canceled. The new nozzle assembly has pressure and lift screws similar to those in the 9L6969 Nozzle Assembly used on 3208 Engines.

NOTE: The test specifications for the new nozzle are the same as for the former nozzle. Check the 3208 Service Manuals, "Testing 9L6969 Fuel Nozzles", to adjust the pressure with the new screw-type adjustment.

Caterpillar Information System:

1977/05/09 New Information On Caterpillar Cooling System Inhibitor{1350}

1977/05/09 Improved Air Cleaner Group{1051}

1977/05/09 Shorter Bolts Now Used In Exhaust Manifold Support{1059}

1977/05/09 New Rotor Assembly For Engine Oil Pump Has A Drilled Passage For Better Lubrication Of Oil Pump Bearing{1304}

1977/05/09 Special Torque Wrenches Use Noise As Indication Of Correct Torque Application{0614}

1977/05/02 Special Tools For Complete Repair Of Water Pump In Direct Injection Engines{0620,1361}

1977/05/02 Improved Keystone Piston Assembly{1214,1216}

1977/05/02 Improved Cylinder Block With Spacer Plate Used With New Cylinder Heads, Cylinder Head Gaskets, Cylinder Liners And Timing Gear Housing{1101,1162,1201,1216}

1977/04/25 New Socket Assembly To Tighten The Bolts That Fasten The Sleeve Levers To The Sleeve Shaft{0621,1250}

1977/04/25 Revision Of Engine Data Sheet Gives Important Information On Single-Bearing Generators Assembled To Cat Engines{1156,4450,0354}

1977/04/25 Improved 5P3000 Engine And Transmission Shipping Stand Assembly; Modification Available For Stands Already In Use{0640}

1977/04/25 New Oversize Connecting Rod Bearings Have Improved Design And Material{1219}

1977/05/16 Correct Installation Of Valve Lifters On The Camshaft Is Very Important To Prevent Failures{1209}

1977/05/16 New 5P4185 Fuel Pump Timing Pin To Be Used Only On 3408 And 3412 Engines{0650,1257}

1977/05/16 Stronger Guide Assembly For Oil Level Gauge Used On Caterpillar-Built Engines In Massey-Ferguson Tractors{1300}

1977/05/16 Use Special Instruction Form SEHS6929 For Repair And Maintenance Information On All Roll-Over Protective Structures (ROPS){7323,7325}

1977/05/16 Flare Nut Wrenches Available{0610}

1977/05/23 Parts In 1P3075 Seal Puller Group Available Separately{0621,1160,1161}

1977/05/23 Orifice In Oil Supply Passages Of BrakeSaver Stator Prevent Seal Leakage{1155}

1977/05/23 Install New Plugs To Prevent Oil Leaks At The Oil Filter Base{1306}

1977/05/23 Method Of Piloting Power Generator To Engine Improved{1156,1157,4450}

1977/05/30 New Gasket Used At The Outlet Flange On Heavy-Duty Air Cleaner Group{1051}

1977/05/30 Self Locking Bolts Or Hardened Washers Used In Place Of Sheet Metal Locks{3300}

1977/05/30 Improvements To Aftercooler Water Lines{1063,1380}