Sealing Threads On Switches And Sensors That Are Grounded Through The Case{1400,1900,3175,7422,7493}
Usage:
All Machines So Equipped
When replacing fluid level switches, temperature switches, temperature senders, etc. which are case-grounded through the pipe threads (single wire output) DO NOT use teflon tape to seal the threads. Use pipe sealant such as 5P3413 Pipe Sealant, which contains teflon, to seal liquids and gases up to 149°C (300°F). This only applies to pipe thread type devices. It does not apply to O-ring type devices which need no sealant.
Teflon tape may insulate the electrical connection between the switch (sender) threads and the block or tank causing the device to work incorrectly. In hydraulic applications, teflon tape can also become lodged in valves causing incorrect operation of hydraulic components.
Caterpillar Information System:
1990/09/17 New 4P0329 Pleasure Craft Cruise Kit Available For 3208 Marine Engines {1000}
1990/09/17 Be Sure To Use Correct Piston Pin With New Pistons {1225,1214}
1990/09/17 New Cylinder Head Group Available For Landfill Applications {1100,1104,1105}
1990/09/17 Special Instruction SEHS9177, Has Adjustment Procedure For Door Latch Assemblies And Strikers {7308}
1990/09/10 Voltage Regulator Droop Connections Are Shown Incorrectly In Service Manuals{4475}
1990/09/10 New Timing Specifications{1552}
1990/09/10 New Remanufactured 0R6183 Control Group (Personality Module) Available{1902}
1990/09/10 New Alternator Drive Vee Belt Available{1357,1405}
1990/09/10 Engine Oil Lines Group Available To Relocate Oil Filter On 3208 Marine Engines{1318}
1990/09/10 New Stainless Steel Plug Used In Aftercooler Core Assembly{1064}
1990/09/03 New Service Tools Available{0600,0700}
1990/09/03 New Latching Fuel Solenoid Assemblies{1259}
1990/09/24 Standard Oval And High Temperature Oval Head Seals Available For Certain Hydraulic Cylinder Applications{7555,5102,5456}
1990/09/24 Incorrect Throttle Adjustment Can Cause Engine Surge{1913,0782,1900}
1990/09/24 Add Bolt Dampers To Oil Pump Mounting Bolts to Prevent Bolt Failures{1304}
1990/10/01 What's Your Answer? {0114,1400}
1990/10/01 Correct Light Bulb Replacement For The 8T9290 Borescope; New Light Bulb Used {0777}
1990/10/01 New 4C6090 Multichannel Temperature Selector Available To Aid In Diagnosing Low Power Complaints {0781}
1990/10/01 Incorrect Installation Of Slow-Moving Vehicle Sign (Triangle) May Affect Cooling Performance {7405,1353,7557}
1990/10/01 Answers To Quiz In This Issue {0114,1400}
1990/10/08 Serviced Parts Available For 8C4773 Electric Starting Motor Group{1453}
1990/10/08 Improved 4J3815 Gasket Helps Prevent Oil And Air Leaks In Hydraulic Tank Mounting And Filler Groups{5065}
1990/10/08 New Exhaust Valves Are Used In Caterpillar Remanufactured Cylinder Heads{1105,1101}
1990/10/08 Price Adjustments On Service Program Modules{1902,0782}