1994/09/12 Caterpillar

Improved Fuel Pump Bonnet Seal Has Better Heat Resistance {1251}

Usage:

All Caterpillar Machines Powered By 3408 and 3412 Machine Engines And Some 3204 And 3300 Machine Engines

Description of Change: A new fuel pump bonnet seal is available on the engines in the above machines. The former fuel pump bonnet seal could lose its sealing capability when exposed to above normal temperatures (heat) for extended periods of time. The high temperatures can cause the seal to lose its shape and become brittle. The new seal material has a greater resistance to heat and thus improves the reliability and life of the seal.

Location of new 114-8718 Seal (fuel pump bonnet) used on some 3204 and 3300 Engines with new scroll fuel systems. Also used on all 3408 and 3412 Machine Engines. This illustration is intended to depict the location of the 114-8718 Seal only. Some of the other fuel injection pump components may not currently look like those in the illustration.

Adaptable To: The new 114-8718 Seal is a direct replacement for the former 6V-6228, 7E-4846, and 3D-2992 Seals. The only difference between the new 114-8718 Seal and the former 6V-6228 Seal is the blue teflon coating on the new seal. The blue teflon coating provides lubrication during assembly that helps prevent cutting the seal.

Caterpillar Information System:

1994/09/05 New Water Seals Used In Cylinder Head Assemblies{1124}

1994/09/05 Remanufactured 3400 Cylinder Heads Now Use Intake And Exhaust Valves With Chrome Plated Valve Stems{1105}

1994/09/05 Use Of 4C-4377 Stress Plate Group In 3114 And 3116 Cylinder Block Reconditioning{0672,0673,1201}

1994/09/05 Fan V-Belt Part Number Has Changed For Certain Models With The 3204 Engine{1357}

1994/08/22 New Fuel Priming Pump And Improved Gasket Used{1258}

1994/08/22 Lubrication Change On Twin Disc Power Take-Off's (PTO's){3055}

1994/08/15 Switches With Screw Terminal And Sure Seal® Connector Replaced By Switches With A DT Connector{1400,7400}

1994/08/08 SOS Allowable Soot Level Changed{1318}

1994/07/11 Different Fuel Filter Available To Prevent Premature Wear On Fuel Injection Pump Plungers And Barrels{1261,1251}

1994/07/04 New Cylinder Head Gasket, Spacer Plate And Head Bolts Used; New Cylinder Liner Projection Measurement Method; New Cylinder Head Torque Sequence; Improved Coolant Flow (Cylinder Heads) {1124,1221,1216,1101}

1994/06/27 New Assembly Procedure For Hydraulic Pump Groups With Double Shaft Seals And A Weep Hole Between The Seals Helps Prevent Contamination Through The Weep Hole{5073}

1994/06/20 Installation Procedure For 1R-0716 Engine Oil Filter{1318}

1994/09/19 Caterpillar Introduces New Long Life Heavy Duty Engine Coolant{1395}

1994/09/26 Caterpillar Legendary Service Literature Catalog SELD0811 Updated{0374}

1994/09/26 Arc Suppressors Improve Life of Air Conditioner Thermostatic Switch{7337}

1994/09/26 Exhaust Dust Ejector Operation{1055,1068}

1994/10/03 Oversize Fuel Pump Drive Idler Shaft Available To Salvage Cylinder Block{1206}

1994/10/17 Radio Kits For Retrofitting Machines{7300}

1994/10/31 Using The Correct Air Conditioner Compressor Oil{1802,7320}

1994/10/31 Verification of Connecting Rod Eye Bushing Retention When Overhauling Engines{1218}

1994/12/05 New Muffler Bracket Improves Muffler Support{1062}

1994/12/12 Caterpillar Hose Press And Tool Usage{5057,0684}

1994/12/19 Spacer Plate Is Available To Make Installation Of Permanent Hose Couplings Easier {0684,5057}

1995/01/16 Catalytic Converter And Exhaust Conditioning Products Available{1091}