1987/02/16 Caterpillar

Resistors Used To Protect Electrical Wiring{1400}

Usage:

All Caterpillar Products With Diagnostic Connectors

One or more 6T2217 or 3T1393 Resistor Assemblies may be found on the above products. These resistors are used to protect certain wires, because there is no fuse or circuit breaker to provide protection to that wire, in the event the wire becomes grounded during operation.

One resistor assembly is located in the wire that goes from the positive post of the starting motor (not the solenoid) to the diagnostic connector. This resistor assembly is usually located near the starting motor.

Another resistor assembly may be found in the wire that goes from the battery side of the disconnect switch to the diagnostic connector. This resistor is usually mounted near the disconnect switch.

The resistor assemblies will not hinder the function of the 6T2150 Starting/Charging Analyzer, a Caterpillar Service Tool, or have any effect on the operation of the starting motor. Caterpillar products with dual starters have resistor assemblies on each starting motor.

Caterpillar Information System:

1987/02/16 The Importance Of The Disconnect Switch In Regard To Fire Suppression Systems With Automatic Actuation{7401}

1987/02/16 Use The Correct Vacuum Pump When Servicing Air Conditioning Systems{7320}

1987/02/16 New Penetrating Oil/Lubricant Available (NACD Only){0645,0600}

1987/02/09 How To Hone Cylinder Tubes To Accept Caterpillar Oversized Cylinder Seals{7562}

1987/02/09 Source For White Paint Used On Some Caterpillar Engines{7559}

1987/02/09 New Pistons Used{1214}

1987/02/09 Cooling Jets Removed And Different Oil Pump Used{1000,1201,1214,1304}

1987/02/09 New Assembly Procedure Helps Prevent Oil Pump Failures{1304,4457}

1987/02/09 Tips For Job Site Repair Of Tracks{0729,4169,4170,4172}

1987/01/26 New Piston Oil Cooling Jet Assembly Used {1331}

1987/01/26 Main And Connecting Rod Bearing Part Numbers {1203,1219,1230}

1987/01/26 New Electronic Position Indicator Group Is Available {0782,0600}

1987/02/16 12-Volt Starter Solenoid Available For 7T2265 And 7T2266 Starting Motors{1407}

1987/02/16 Self-Powered Hour Meters Available{7480,7450}

1987/02/16 Polarity Connections And Use Of Service Meter Films When Service Meter Kits Are Installed{7480,7000}

1987/02/16 Guidebook For Caterpillar Inspection And Maintenance Program For Standby Generator Sets{0354,0370,0372}

1987/02/16 Incorrect Use Of Fuel Heaters Can Reduce Engine Power{1296}

1987/02/16 Check Bolt Tightness Before Replacing Gaskets To Stop Coolant Leakage{1393,1362}

1987/02/16 Change To Interval For Valve Lash Adjustment{1103,1105,1123}

1987/02/16 Some 2P4005 Oil Filter Assemblies May Be Difficult To Install{1318}

1987/02/16 Fuel Ratio Control Diaphragms On 3161 Governors{1278}

1987/02/16 Grommets Added To Dampen Vibration{1307}

1987/02/23 Stronger Timing Gear Housing; Additional Stud Used At Top Of Housing{1151,1201}

1987/02/23 Two Front Timing Gear Housings Available{1162,1150}