1994/02/21 Caterpillar

Servicing Lighted Rocker Switches {1435}

Usage:

Many new Caterpillar products are replacing previous non-lighted switches with new lighted rocker switches. These lighted rocker switches can be broken if the rear connector is not correctly removed while being serviced.

Switches with 10 blade terminals can require up to 70 pounds of force to separate the connector from the switch. This force far exceeds the strength of the switch housing tabs that hold the two halves of the switch together.

Use the following procedure when servicing lighted rocker switches:

1. Remove the rocker switch from the mounting panel.

2. Grasp the switch with one hand on the long side of the base adjacent to the blade terminals. DO NOT hold the mounting flange or frame of the switch.

3. With the other hand, grasp the connector shell. Pull the connector off the switch terminals with a straight-line force while gently rocking the held parts until the connector separates. This step can also be done by carefully prying these two parts out of engagement with a small screwdriver.

This procedure can be adapted to any Caterpillar product using lighted rocker switches.

Caterpillar Information System:

1994/02/07 Fuel Injection Pump Improvements{1251}

1994/02/07 Cylinder Head Gaskets Improved To Provide Better Fire Ring Retention{1124}

1994/02/07 New Turbocharger Groups And New Turbocharger Cartridge Groups Have Improved Thrust Bearing And Turbine Ring Seal{1052,1053}

1994/02/07 12 And 24 Volt DC Work Lights Are Available{0600}

1994/02/07 New Piston Body Has Improved Bonding Between Iron Band And Aluminum Body{1214}

1994/01/31 Automatic Shut-Off Systems Not Recommended on Mobile Earthmoving Equipment {7418,7403}

1994/01/17 Low Coolant Level Plate In Radiator May Cause False Coolant Level Readings {1353}

1994/01/17 New Valve Cover Gasket Used {1107}

1994/01/17 New Control Assemblies Used In Fuel Injection Control Groups {1298}

1994/01/17 9X6779 Radio Has No Memory {7338}

1994/01/10 New Diaphragm Used In Governor Air Actuator Group Improves Service Life{1265}

1994/01/10 The 1W-1420 Oil Cooler Bracket For Marine Gears Has Been Modifie{3320}

1994/02/28 Soldering Iron Available For Field Use {0709,1400}

1994/02/28 New Retaining Compound Is Available {0649}

1994/02/28 New Turbocharger Models Have Left-Hand Threads On Compressor Nut And Turbine Shaft {1053,1052}

1994/03/14 Articles Pertaining To Commercial Engines Or Truck Engines {0374}

1994/03/21 New Seal Used In Air Lines Group {1058}

1994/03/21 The Ninth Edition Of The Lubricating Oils Data Book Is Available From The Engine Manufactures Association (EMA) {1318}

1994/03/28 Improved 1R-0712 Fuel Filter Provides Improved Sealing{1261}

1994/04/04 Identification Of Intake And Exhaust Valves That May Be Used In Remanufactured Direct Injected 3400 Cylinder Heads{1105}

1994/04/11 Speed Sensor Available With Improved Reliability{1907}

1994/04/25 Lubricant Will Ease Installation Of Secondary Radial Seal Air Filter Element {1054}

1994/04/25 Service Tools For Electronic Controls {0781,0782}

1994/05/16 Fuel Dilution In The Engine Oil{1290,1318}