1998/09/01 Caterpillar


New Carburetor Improves Engine Performance {1266}

Usage:


G3406 (4FD, 5NW) Engines

Description of Change: The new carburetor group is used on these engines. The only difference between the new and former carburetor groups is the addition of a new washer under the carburetor gas valve. The installation of the new washer under the valve provides these benefits:

* Better control of the air/fuel mixture
* Increased engine stability at high idle/no load.

Adaptable To: The new 159-8337 Carburetor Group is a direct replacement for the former 7E-5427 Carburetor Group on these engines. The new carburetor group is adaptable to the above engines back to first production. The new 7E-1569 Washer can be installed under the 9Y-9811 Gas Valve in the former 7E-5427 Carburetor Group.


159-8337 Carburetor Group 7E-1569 Washer (1).
9Y-9811 Gas Valve (2).

Caterpillar Information System:

1998/09/01 Be Sure To Heat The Gear To The Correct Temperature When Installing The Crankshaft Gear {1204}
1998/09/01 New Basic Water Pump Groups Used In Engine Water Pump Groups {1361}
1998/08/01 Correction To Service Manual Module, RENR1260, Electronic Modular Control Panel II (EMCP II) For EUI Engines {4490}
1998/08/01 Improved VR3 Regulators Available For Self-Excited Generators {4450}
1998/08/01 Procedure For Installing Resistive Temperature Detector (RTD) {7566}
1998/08/01 Procedure To Shut Off Oil Mister Pump {1304}
1998/08/01 New Main Bearing Used {1203}
1998/08/01 New Exhaust Manifold Shield Group Compatible With High Performance Aftercooler (HPAC) {1067}
1998/08/01 Reference For Translated 3600 Diesel Engine Service Publications {0374}
1998/08/01 New Special Instruction Available To Serve As A Guide For Installing The 7E-3100 Treated Water Aftercooler Group {0374,1063}
1998/08/01 The Causes Of Worn And Broken Piston Rings {1215}
1998/08/01 New Piston Rings Provide Increased Service Life {1215}
1998/09/01 New Plug Kit Improves Injection Actuation Pressure During Engine Cranking {1714}
1998/09/01 New Software To Correct Uneven Acceleration In Marine Engines {1920}
1998/09/01 New Valve Lash Adjusting Tool Group Released For All 3500 Engines {0600,1105,1121}
1998/09/01 Recommended Lubrication And Torque Procedure For Cylinder Head Bolts {1100}
1998/09/01 Recommended Lubrication And Torque Procedure For Main Bearing Cap Bolts {1203}
1998/09/01 Recommended Lubrication And Torque Procedure For Connecting Rod Bolts {1218}
1998/09/01 New Spacer Plate Gasket Provides Improved Sealing {1221}
1998/09/01 Non-E-Trim Unit Injectors No Longer Produced For 3500B Engines {1290}
1998/09/01 New Gear And New Shaft Assemblies Used In Scavenge Oil Pump Groups {1312}
1998/09/01 Some Benefits Of The New 146-2588 Spark Plug {1555}
1998/09/01 Turbocharger Vent Lines Important For Engine Reliability {1380}
1998/09/01 3600 Diesel Marine Monitoring System Owner's Manual Has Been Revised {0374}
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