Remove Diode Assemblies From Shutoff Solenoids{1259}
Usage:
All Truck Engines Equipped With Electric Shutoff Solenoids
The 1W9070 Diode Assembly should be removed from the terminals of the electric shutoff solenoids on truck engines. The 1W9070 Diode Assembly has no significant effect on truck engine systems, but can cause unnecessary expense and troubleshooting confusion.
For applications other than truck engines, this recommendation does not apply.
Caterpillar Information System:
1984/10/29 New Outer Bearing Race Used In Auxiliary Fan Drive Group{1390}
1984/10/29 New Diaphragm Used In BrakeSaver Control Valve Group{1159,1155}
1984/10/29 New Cylinder Heads, Fuel Nozzles And Fuel Nozzle Adapters Used{1101,1106}
1984/10/29 New Heat Shield For Wiring To Electrical Shutoff Group{7400,7403,7418}
1984/10/29 New Cylinder Head Gasket Helps Prevent Oil Leakage Around Gear Pocket{1101}
1984/10/29 New Oil Filter Group Can Be Used To Extend Oil Change Interval{1306,1318,1326}
1984/10/29 Foil Shield Will Help Prevent Electrical Interference In Engine Set Point Indicator{0781,0785}
1984/10/29 Cetane Injection Group Uses New Orifice, Tee and Seals{1250,1274}
1984/10/22 Information For Testing 8N7004, 4W7011 And 4W7015 Fuel Injection Nozzles{1254}
1984/10/22 Changes To Water Lines Group Increase Coolant Flow Through Exhaust Manifold{1059}
1984/10/22 Improvements Made To Fuel Filter Housing{1260,1261,1262}
1984/10/22 New Heat Exchanger Group Has More Cooling Capacity{1379}
1984/11/05 Preferred Engine Timing Procedures{1250,1286,1290,1292}
1984/11/05 Thread Identification Kit Available{0600,0760}
1984/11/19 Use Care When Installing Circuit Boards In Regulators{4467}
1984/11/19 Remanufactured Cylinder Head Groups{1100,1101,7554}
1984/11/19 Additional Information For Correct Fuel Injector Timing{1290}
1984/11/19 Fuel Setting And Related Information Microfiche Corrected, Improved{0374,0375}
1984/11/19 Remanufactured Piece Parts Now Available For Turbochargers (U.S. and Canada Only){1052,1053,1056,1065,1077}
1984/11/26 Causes And Correction Of Opposite Crankshaft Rotation In Direct Injection Engines{1000}
1984/11/26 Rear Power Take-Off Clutch Can Use Nonmetallic Plates And Grease Lubrication For Main Bearings{3055,3305}
1984/11/26 Important Differences In Engine Arrangements On 3208 Engines Equipped With Turbochargers{1000}
1984/11/26 Identification Of Camshaft Groups And Valve Mechanism Groups{1210,1102}
1984/11/26 New Fuel Injector Assembly Reduces Smoke When Operating At Lower RPM And Load{1251,1250}