1985/09/02 Caterpillar

Fumes Disposal Group Improved{1317}

Usage:

3204 Industrial Engines ( 2TB, 7EB, 3PC, 6DC );
916 ( 2XB, 9WB, 5KC ),
926 ( 94Z, 4NB, 8NB ),
943 ( 31Y, 4Z, 3Y, 19Z ),
953 ( 76Y, 77Y, 78Y, 5Z, 20Z, 44Z ) Loaders;
IT18 ( 9NB, 7ZB ),
IT28 ( 2KC, 8JB ) Toolcarriers

Description of Change: The fumes disposal group used on the above engines and machines has been improved. Formerly, the fumes were discharged at the front of the engine. In some cases, this could cause the radiator core to become plugged with the discharged oil vapor and dirt. The improved fumes disposal group discharges the oil vapor in the area just behind the flywheel housing.

Adaptable As: The new components of the improved 7N6497 Fumes Disposal Group, when used together, are direct replacements for the former components as shown in the chart. The location of the new components are shown in the illustration. The new components, when used together, are adaptable to all the above engines and machines.

Location of the new components of the 7N6497 Fumes Disposal Group.

Caterpillar Information System:

1985/09/02 Steel Fuel Pump Lifter Used{1250,1251}

1985/09/02 Check Fuel Injection Nozzles In Overheated Engines{1254}

1985/09/02 Use Correct Valves When Rebuilding Engines{1105,1103}

1985/09/02 New Precombustion Chamber Seal Available{1106,1100}

1985/09/02 New Engine Pressure Group Available{0600,0770,0781}

1985/09/02 Adjusting Pneumatic Speed Control For Correct Operation{1264}

1985/09/02 Repair Kits Available For Air Actuator Used In Governor Control Groups{1250}

1985/08/26 Dual Element Air Cleaner Group Available{1054,1051}

1985/08/26 Improved Front Gear Housing Assembly Used In Engine Front Housing Group{1151}

1985/08/19 New Camshaft Installation Tools Available{0600}

1985/08/19 New Address And Phone Number For Ordering Fabricated Tool (FT) Drawings{0600}

1985/08/19 Improvements Made To Spark Ignited Engines{1100,1104,1105,1207}

1985/09/16 Oil Pump Groups Improved {1304}

1985/09/16 New Tools Available To Change BrakeSaver Control Valve Diaphragm {0600,1155}

1985/09/16 Changes To Fuel Systems {1250,1251,1252,1253,1254,1100}

1985/09/16 Pressure Switch Has Been Improved {1419,7332}

1985/09/16 Use Product Information System For Consists Of Engines With No Bills Of Material {0330,0350,0373,1000}

1985/09/16 Keep Product Information System Up-To-Date {0330,0350,0373}

1985/09/16 Engine Valve Lash And Fuel Injection Timing Adjustment Procedure {1100,1251}

1985/09/16 New O-ring Seals And Additional Clamps Used In Instrument Panel Fuel Filter Differential Lines Group {1250}

1985/09/16 New Air-To-Air Aftercooler Arrangement Used On Truck Engines {1063}

1985/09/23 Procedure For Turning Pins And Bushings On Sealed And Lubricated Track{4175}

1985/09/23 New Keystone Ring Groove Gauge Available{0763}

1985/09/23 New Bleed Screw Used In Fuel Injection Nozzle{1254}