Pressure Switch Has Been Improved {1419,7332}
Usage:
All Products So Equipped
The 3T4418 Pressure Switch Assembly has been improved. In some applications, vibration could cause the 1/8" -27 NPTF brass threads (see illustration) to fail. The improved 3T4418 Pressure Switch Assembly is made with steel threads of the same size for improved service life.
Improved 3T4418 Pressure Switch Assembly.
Caterpillar Information System:
1985/09/16 Changes To Fuel Systems {1250,1251,1252,1253,1254,1100}
1985/09/16 New Tools Available To Change BrakeSaver Control Valve Diaphragm {0600,1155}
1985/09/16 Oil Pump Groups Improved {1304}
1985/09/02 Fumes Disposal Group Improved{1317}
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}
1985/09/16 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}
1985/09/23 List Of Mechanical Service Meters For Earlier 3500 Series Engines Using Mechanical Service Meters{1286}
1985/09/30 Maximum Wear Limits Established For Camshaft Roller Followers{1209}
1985/09/30 Restarting Engines Without A Fuel Priming Pump{1250,1258}
1985/09/30 Torque Increase For Cylinder Head Bolts{1101}