Improved Start Switch Used{1416}
Usage:
All Products Using 9W1077 Start Switch Assemblies
Description of Change: An improved start switch is being used on some products. The switch presently uses number designations for each of the screw terminals instead of function abbreviations. A change will be made to use the new designations in all future production. See illustrations.
Adaptable To: The improved 9W1077 Start Switch Assembly is adaptable to all models from first production using this start switch. The part number did not change.
Illustration 1. 9W1077 Start Switch Assembly.
Illustration 2. New terminal number designations.
Illustration 3. New switch wiring schematic.
Caterpillar Information System:
1987/05/25 New Service Tools Available{0600}
1987/05/25 1U5796 Pressure Differential Gauge Group Available For Load Sensing Hydraulic Systems and Differential Steering System{0770,0784,5050}
1987/05/18 Improved Oil Temperature Regulator Gasket{1330}
1987/05/18 New Precombustion Chamber Seal Available{1100,1106}
1987/05/18 Be Sure Tubing Clamps That Fasten Air-To-Air Aftercooler To Air Lines Are Correctly Installed{1058}
1987/05/18 Hollow Dowel Relieves Accessory Drive Oil Leakage{1207,1166}
1987/05/18 New Plastic Water Sleeve Used{1380}
1987/05/18 Twist Drills Available{0670,0600}
1987/05/18 Check Alternator Output Connection Prior To Machine Delivery{1405}
1987/05/18 New Undercarriage Reconditioning Bulletin Available - Reusability Guidelines And Installation Procedures For Split Master Links{4176}
1987/05/11 Enhancements Available For Marine PAR Program {1000}
1987/05/11 Classifications For Marine Engine Ratings {1000}
1987/05/25 Remanufactured Heavy-Duty Starters And High-Amp Alternators{1405,1453}
1987/05/25 Truck Performance Diagnostic Guide Available{0374,1219,1227}
1987/06/01 Use Only Paint To Mark Connecting Rod Caps For Torque-Turn Method {1218,1219}
1987/06/01 Use Correct Pistons And Rings For 3406B Truck Engines {1214,1215}
1987/06/01 Remanufactured Programmable Electronic Engine Controls (PEEC) {1250}
1987/06/01 Fuel Injector Trim Bolt {1257}
1987/06/01 Features And Servicing Of The Various Caterpillar 3161 Governors {1264,1278}
1987/06/01 Exhaust Manifold Thermocouple Has Longer Insulated Leads {1050,1408}
1987/06/15 Caterpillar Original Equipment Paint Products (U.S. And Canada) {7559}
1987/06/15 New Face Films For Electronic Monitoring System (EMS) Panels {7490}
1987/06/15 1U5495 Latch Group Available For Earlier Large Duo-Cone Seal Installers {0700,4052}
1987/06/15 New 1U5752 Retainer Tool Available To Service Hydrostatic Transmissions {0721}