1995/08/01 Caterpillar

Valve Lash Adjustment Intervals{1105}

Usage:

3400 Commercial Engines

3406/B/C (6TB, 90U) Industrial, 3406/B/C (4TB) Marine, 3406/B/C (2WB, 4RG, 4JK) Generator Set, 3408/B/C (67U) Industrial, 3408/B/C (99U) Marine, 3408/B/C (78Z) Generator Set, 3412/C (38S) Industrial, 3412/C (60M) Marine, 3412/C (81Z) Generator Set Engines

The first recommended valve lash adjustment interval for these engines is at 250 service hours. This is also the first oil and filter change. Subsequent valve lash adjustment intervals are every 3000 service hours.

3408C (8RG) Marine, 3412C (3JK, 7BL) Marine, 3412 (38S equipped with 9Z-5339 Modification), 3412C (2WJ) Generator Set Engines

The first recommended valve lash adjustment interval for these engines is at 250 service hours. This is also the first oil and filter change. Subsequent valve lash adjustment intervals are every 1500 service hours.

3408C (9XM) Industrial, 3412C (9XF) Industrial Engines

These are oil well service (high speed, high horsepower) engines. The first recommended valve lash adjustment interval for these engines is at 125 service hours. This is also the first oil and filter change. Subsequent valve lash adjustment intervals are every 1000 service hours.

Caterpillar Information System:

1995/08/01 Improved Cylinder Head Group Components And Valve Mechanism Group Components Provide Increased Service Life{1100,1102,1103,1104,1105}

1995/08/01 New "High Efficiency" Fuel Filters Help Prevent Worn Injectors{1261}

1995/08/01 Piston Usage Chart For Two Piece Pistons{1214}

1995/08/01 Improved 1U-7430 Front Crankshaft Seal Installer Available{1160}

1995/07/01 New Repair Seal Kit Available For 7E-5038 Pilot Operated Valve In Oil Lines Groups{1307}

1995/07/01 New Bracket Installed On New Oil Pump Group Helps Reduce Vibration In Water Lines Group{1380}

1995/07/01 New Auxiliary Pump Group Used{1371}

1995/07/01 New Gasket Added To Housing Control Group To Prevent Moisture Penetration{1287}

1995/07/01 New Liner Seat Inserts Allow Cylinder Blocks With Deeper Liner Seat Cracks To Be Salvaged{1201,1217}

1995/07/01 Two New Attachment Start Switch Groups Provide Improved Resistance To Vibration Damage{1416}

1995/07/01 Caterpillar Long Life Coolant/Antifreeze Identification{1395}

1995/06/01 Caterpillar Recommends Installing Temporary Strainer To Remove Possible Debris in Cooling System During New Engine Start-Up{1350}

1995/08/01 Wear Sleeve Removal Tooling May "Mark" The Crankshaft{1202,1161}

1995/08/01 New Oil Seal And Seal Collar Used In Auxiliary Sea Water Pump Groups{1371}

1995/08/01 Check For Correct Location Of Trolling Mode Input Wire{1408}

1995/08/01 New Piston Crown Assembly Used In Piston And Rod Group{1214}

1995/08/01 New Rain Shields And Automatic Draining Precleaner Cup Assembly Available{1051}

1995/08/01 New Air Cleaner And Silencer Has Increased Noise Attenuation{1051,1054}

1995/08/01 New Turbocharger Bearing Clearance Specifications{1052,1053}

1995/08/01 Turbocharger Cartridge Groups Available For Parts Service{1053,1052}

1995/08/01 New Adapters Used In Aftercooler Groups{1063}

1995/08/01 Improved Aftercooler Tube Assemblies Now Stainless Steel To Increase Corrosion Resistance{1063}

1995/08/01 Change In Crankshaft Seal Wear Sleeve Installation Procedure{1160,1161}

1995/08/01 New Air Shut-Off Groups Used{1078}