1999/03/01 Caterpillar

New O-Ring Seals For Unit Injector Sleeves {1125}

Usage:

3406E (5EK, 6TS, 1LW, 5DS, 1MM1-125, 2WS1-475) Truck Engines

During a repair, the sleeves do not need to be replaced. For parts service, only use 166-3718 O-Ring Seals in the top two positions on the 104-5536 Unit Injector Sleeves.

104-5536 Injector Sleeve (1).

166-3718 O-Ring (2).

9X-7430 O-Ring (3).

Caterpillar Information System:

1999/03/01 New Turbocharger And Software Used {1052}

1999/03/01 Installing 1999 ADEM 2000 HD Engine Into Earlier ADEM II HD Engine Chassis {1901,1923}

1999/03/01 Create And Save The ECM Customer Parameters List As A Back-Up {1901}

1999/03/01 Use 145-5247 And 147-2675 Wear Sleeve Installer To Install Crankshaft Wear Sleeves {1202}

1999/03/01 Troubleshooting Guide Corrections {0350}

1999/03/01 70-Pin Breakout "T" Harness For The ADEM 2000 Truck Engine ECM {1901}

1999/03/01 Optional 4-Pin Coolant Level Sensor {1395}

1999/02/01 Air Compressor Drive Gear Holding Tool Available{0700,1803}

1999/02/01 Installation Procedure For Hydraulic Electronic Unit Injector (HEUI) Oil Pump High Pressure Oil Line{1714}

1999/01/01 Use 144-0235 Belt Tension Gauge To Check Belt Tension{7461,1357}

1999/01/01 New Two-Piece Spool And Diaphragm For BrakeSaver Control Valve Now Used{1155}

1999/01/01 Caterpillar Driver Information Display (Cat ID) Version 2.0 Release For On-Highway Truck{1920}

1999/03/01 Atmospheric Pressure Sensor Design Improvements {1901,1923}

1999/04/01 New Caterpillar High Efficiency Fuel Filters With STAY CLEAN VALVES® Replace All Standard Fuel Filters In February Of 1999{1261}

1999/04/01 Hydraulic Electronic Unit Injector (HEUI) Pump Service Tips{1714}

1999/04/01 Exhaust Brakes May Need To Be Modified Or Replaced{1093}

1999/04/01 New Valve Lifter Assemblies (Full Body Roller Follower) And New Lifter Guide Springs Used{1209}

1999/04/01 Remove Engine Oil Pan To Determine Source Of Internal Coolant Leakage{1302,1348,1361,1395}

1999/04/01 New Integral Seal (Air Compressor Mounting Seal) Available{1803}

1999/04/01 New Cooling System Vent Line Check Valve Helps Prevent Over Cooling{1370}

1999/05/01 New Design Of Cylinder Block And Main Bearings {1201,1203,1224}

1999/05/01 New Main Bearing Material {1203}

1999/05/01 Correction To Oil Level Gauge (Dipstick) Calibration Procedure {1326}

1999/05/01 A New Special Instruction Is Available To Help Determine The Reusability Of Camshafts In 3406E Truck Engines {0374,1210}