1981/11/23 Caterpillar


New Regulator And Field Coil Assemblies Used{1410,1405}

Usage:


All Engines With 4N3986, 4N3987, 5N5692, 6N9294 and 3T6352 Alternator Groups

Description of Change: New regulator and field coil assemblies are used in these alternator groups. The new regulator assemblies have a higher voltage rating. They also have a resistor to make sure that the regulator never turns off completely. The former regulator assemblies at times caused a wrong indication to be sent to the light emitting diode in the Electronic Monitoring System panel.

A new field coil assembly is used in the 4N3987 Alternator Group. This new field coil assembly has a direct current resistance of about 19 ohms. It will decrease the possibility of a regulator failure in some applications. The former coil assembly had a resistance of 9 ohms.

Adaptable To: The new parts are direct replacements for the former parts as shown in the chart.

Caterpillar Information System:

1981/11/23 Use Of Metric Fasteners{7553,0683,1000}
1981/11/23 New 6V4190 Auto Programmer Group And 6V4865 Auto Programmer Connector Used With 6V2100 Multitach{0651}
1981/11/16 Locating Special Instructions Quickly And Easily Using Microfiche{0374}
1981/11/16 New Inlet And Exhaust Valves, Valve Guides Have Tighter Fit To Prevent Corrosion, Guide Wear{1104,1105,1101,1103,1108,1109}
1981/11/16 Improved Element Assemblies Used In Jacket Water Heaters{1383}
1981/11/16 New Shaft Assembly Used In Flexible Coupling Arrangement{3303}
1981/11/16 Check Bottom Surface Of Cylinder Liner Flange For Erosion And Wear{1216,1201}
1981/11/09 New Clearance Specifications For Oil Pump Rotor Tip{1304,0374}
1981/11/09 Use FT1566 Valve Spring Compressor For Installation And Removal Of Valves{0622,1108}
1981/11/09 Part Number For Fuel Injection Pump Group In New Location{1253,1286}
1981/11/09 New Parts And Assembly Procedure Used On Main Shaft{3306}
1981/11/09 New Basic Turbocharger Group Prevents Possible Failures Of Compressor Wheel{1052}
1981/11/23 Plate Added To Hold Oil Lines In Adapter For Left Side Oil Filter{1306,1307}
1981/11/30 New Duo-Cone Seals Use Seal Rings Made Of Steel Instead Of Cast Iron{7555}
1981/11/30 New Tube And Cover Assembly Make Service Easier{3300,3306}
1981/11/30 New Spacer; New Shaft Assembly Permits Pressure Lubrication Of Sun Gear{3304,3307}
1981/12/07 Do Not Use "V" Mark As Reference To Install Pistons With Keystone-Type Rings{1214,1215}
1981/12/07 New Air Cleaner Group Has Six Clamps For Improved Seal{1051}
1981/12/14 Make Sure Coolant Conditioner Elements Are Changed At Correct Intervals{1350}
1981/12/14 How To Remove The 7L4511 Sleeve Assembly From Aftercoolers{0620,1063}
1981/12/14 New Springs For Timing Advance Used In Governor And Fuel Pump Drive Group{1272,1288}
1981/12/14 New Cylinder Liners And O-Ring Seals Give Longer Seal Life{1216,1201,1213,1227}
1981/12/21 Use Of A Flex-Hone For Cylinder Liner Reconditioning{0664,0674,1216}
1982/01/11 Improvements And Test Procedures For Hydramechanical Shutoffs{7418}
Back to top
The names Caterpillar, John Deere, JD, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
CH-Part.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only.