1978/10/16 Caterpillar

New Switch Group Used In Several Applications{1416}

Usage:

Most Vehicles and Engines (Except D3 Tractor, 910 and 931 Loaders)

Description of Change: A new switch group is used in several applications, like heat-start, starting air, and remote starting, glow plug and electric start on most vehicles and engines except D3 Tractors, 910 and 931 Loaders. The new switch group is designed to prevent an electrical arc (discharge of electricity across a gap) when the switch is activated. In certain conditions the former contact points in the former switch assembly can be welded together by an electrical arc.

Adaptable As: The new 7N4160 Switch Group is larger than the former 8S7713 Switch Assembly. For this reason some panels on earlier machines and engines will not have enough space to install the new switch.

Caterpillar Information System:

1978/10/09 5P9736 Bracket-Link Now Available For Parts Service{0644}

1978/10/09 A New 5P9698 Frequency Calibrator Is Available For The Calibration Of Caterpillar Diagnostic Tools{0651}

1978/10/09 New Head Assemblies, Head Gaskets, And Spacer Plate Gaskets Prevent Oil Leakage At The Spacer Plate{1101,1113}

1978/10/09 Improvements To The 6N5906 Electric Service Meter{7480}

1978/10/09 4J7533 O-Ring Seals Now Available For Parts Service Of The 5P4150 Nozzle Tester Group{0651}

1978/10/09 Salvage Of Turbocharger Compressor Housing During Reconditioning{1052}

1978/10/09 Never Use Copper Tubing As A Replacement For Steel Brake Lines{4257,7554}

1978/09/25 New 6V1 Seal Kit Available For Service Repair Of High Pressure Tee Test Couplers{0623,7555,5057}

1978/09/25 Adjustment Procedures And Lubrication Recommendations For Drive Pulleys On Caterpillar Fuel Injection Test Bench{0652}

1978/09/25 Tips For Service Information Retrieval System (SIRS) Users{0374}

1978/09/25 Use New 6V22 Tool Group To Make Replacement Of Worn Governor Spring Guides{0620}

1978/09/25 New Springs Available For Forward And Reverse Clutches, And New Tool To Correctly Position The Clutches Of Twin Disc MG514 Marine Transmission{3302,0626}

1978/10/16 Caterpillar Fuel Injection Test Bench Book{0374}

1978/10/16 Modification To Rack Adjusting Tool Needed For Higher Rack Settings{0654,1257}

1978/10/16 New Transmission Mounting Group Has Improved Design For Longer Service Life{1150,3000}

1978/10/16 Tips For Service Information Retrieval System (SIRS) Users{0374}

1978/10/23 Conversion Of Testers In Earlier 1P3550 Wiring Harness Tester Groups To Use Later Test Harness Assemblies With Receptacle Connections{0650,0651,1408}

1978/10/23 5P8690 Fixture Group And 5P8691 Socket Are Available For Easier Reconditioning Of 5M4169 Cam Followers{0622}

1978/10/23 In The Future There Will Be A Common Warning System For All Caterpillar Machines{7450,7301,7400}

1978/10/30 New Fuel Injection Nozzles Are Used In 3208 Truck Engines When Equipped With EGR{1254}

1978/10/30 6V92 Plug Socket Is Available For The Removal And Installation Of Lubricant Plugs{0612}

1978/11/06 Improvement Made To Solenoid In Electric Shut-Off Group{1259}

1978/11/06 New Control Cover Gives Better Control Of Exhaust Gas Recirculation System{1080,1250}

1978/11/13 6V106 Post, 6V107 Stop And 6V108 Cap Now Available For Parts Service Of The 7S1100 Hose Press Arrangement{0660}