1990/10/01 Caterpillar

New 4C6090 Multichannel Temperature Selector Available To Aid In Diagnosing Low Power Complaints {0781}

Usage:

The new 4C6090 Multichannel Temperature Selector is a switching instrument that allows the user to rapidly switch between 16 individual type K thermocouples, such as those used to measure exhaust temperature. The measurement of exhaust temperatures is one method of locating faulty fuel injectors.

Important features of the 4C6090 Multichannel Temperature Selector are:

- An eight-channel cable pack stored in lid. An optional 4C6097 Cable Assembly (eight-channel cable pack) is available to provide 16-channel capability.

- Used with the 6V7070 or 6V7800 Digital Multimeter and a 6V9129 Temperature Adapter to digitally display the temperatures.

- Allows the serviceman to rapidly switch between 16 type K thermocouples (individual cylinder exhaust temperatures).

The 4C6090 Multichannel Temperature Selector includes a 4C6096 Adapter Cable (1), a 4C6089 Foam Insert (2), 4C6093 Cable Pack for Ch. 1 - 8(3). See the illustration. Complete operating instructions are also included.

4C6090 Multichannel Temperature Selector.

NOTE: Type K exhaust thermocouples are factory installed in:

- The 3508 Vehicular Engines in D11N and 776B Tractors and 777B Trucks, beginning with engine serial number 99W2034.

- The 3512 Vehicular Engines in 785 Trucks, beginning with engine serial number 96Z552.

- The 3516 Vehicular Engines in 789 Trucks, beginning with engine serial number 54Z404.

Caterpillar Information System:

1990/10/01 Correct Light Bulb Replacement For The 8T9290 Borescope; New Light Bulb Used {0777}

1990/10/01 What's Your Answer? {0114,1400}

1990/09/24 Add Bolt Dampers To Oil Pump Mounting Bolts to Prevent Bolt Failures{1304}

1990/09/24 Incorrect Throttle Adjustment Can Cause Engine Surge{1913,0782,1900}

1990/09/24 Standard Oval And High Temperature Oval Head Seals Available For Certain Hydraulic Cylinder Applications{7555,5102,5456}

1990/09/24 Sealing Threads On Switches And Sensors That Are Grounded Through The Case{1400,1900,3175,7422,7493}

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}

1990/10/01 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}

1990/10/08 New Pump Group With Bolt Dampers Used In Oil Pump Group{1304}

1990/10/15 Be Sure To Use Only 5P3975 Rubber Lubricant On The Core Assembly End Seals In Folded Core Or Multiple Row Module Radiators{1353,1351}

1990/10/15 Additional Clip And Hardware Prevent Damage To Fuel Line Of 4W6887 Instrument Panel{1261}

1990/10/15 New Temperature Regulators; Regulator Service Hours Changed{1330,0770,1355,7527,7543}

1990/10/22 Improved 3T2357 Horn Switch, 3T3453 Starting Aid Switch, 3T3947 Start Switch, 3T8514 Test Switch Assemblies {1416,1456}

1990/10/22 4C6600 Battery Voltmeter For Determining Battery Percent Of Charge {7468,0785,1401}