Electric Fuel Pressure Gauge Now Used{7456}
Usage:
650B, 660B and 666B Tractors
Description of Change: An electric fuel pressure gauge, sender, and the necessary electrical wire are now used in place of the former mechanical fuel pressure gauge and tubing on 650B, 660B and 666B Tractors. The electrical wiring has more resistance to high temperatures than the former tubing, and will give longer service life.
Adaptable As: The new parts, used together, are a direct replacement for the former parts.
Wiring diagram.
Location of new parts on 650B and 660B Tractors.
Caterpillar Information System:
1978/01/30 Rectifiers And Fuses Added To Transmission Control Wiring Increase Switch Service Life{1408,3168,3172,3173,3174}
1978/01/30 Improved Electrical Wiring Has A Separate Fuse For Each Circuit{1408}
1978/01/30 Valve Damage Can Be Caused By Short Intervals Of Engine Operation In Very Cold Temperatures{1105,1208}
1978/01/30 Additional Parts Needed To Install 54 Winch On Tractors Equipped With Steel Fuel Lines On The Fuel Tank{5163}
1978/01/23 Stronger Guard Assemblies For Scraper Bowl{6201}
1978/01/23 New Torque Converter Has Several Improvements{3101}
1978/01/23 Change In Design Of Engine Governor, Fuel Injection And Transfer Pump Groups, And Fuel Ratio Control Groups{1264,1278,1286}
1978/01/23 Rear Counterweights Are Now Made Of Steel{7056}
1978/01/23 Changes Made To Scraper Lubrication Films{7557,6229,6230,6239}
1978/01/16 Stronger Link Assembly For Bucket Control Group; Longer Grease Fittings Make Lubrication Easier{6107}
1978/01/16 Improved Mounting Plate For Elevator Lines Manifold{6207,6209,6210,5057}
1978/01/16 Improved Gasket Prevents Oil Leakage From The Governor{1264}
1978/01/30 Oil Strainer (Screen) Added To Turbocharger Thrust Bearing{1052,1053}
1978/01/30 New Spring Used In Belt Tightener And/Or Fan Drive Groups{1358,1359}
1978/01/30 New Water Pump Cover Has A Baffle And Wall To Send Coolant Flow From Bypass Line Directly Into Water Pump{1361}
1978/01/30 Breather For Transmission Case Now Made Of Metal{3150}
1978/01/30 Do Not Change Factory Fuel Or Speed Settings On Truck Engines Unless New Settings Are Certified Under Applicable EPA Regulations{0336,0337,1257}
1978/01/30 Retaining Ring Of A New Design Now Used In Torque Converter Group{3100}
1978/01/30 Air Line For Air Compressor Governor Now Connected To Outlet For Wet Air Tank{4272,1065,4278}
1978/02/06 Silicone Sealant Is Now Used To Keep Water Out Of The Steering Clutch Case{4059,4100,4106,4115}
1978/02/06 Adjustment Of Track Tension On Machines With One Carrier Roller Per Side{4150}
1978/02/06 Add New Measurement And Identification To FT904 Backlash Indicator{0653,3258}
1978/02/06 Stronger Clutch Housing Used In Variable Capacity Torque Converter{3102}
1978/02/06 Successful Engine Service-3208 Engine Booklet Is Available{1000}