Remove Diode Assemblies From Shutoff Solenoids
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:
1984/11/07 Foil Shield Will Help Prevent Electrical Interference In Engine Set Point Indicator
1984/09/26 New Cylinder Block Groups Used
1984/09/26 Higher Compression Pistons Can Help Reduce White Exhaust Smoke During Cold Weather Starts
1984/09/26 New Service Tools Available
1984/09/26 Tune-up Kit And Remanufactured Nozzles Available
1984/09/26 New Fittings Used In Fuel Filter Lines Group
1984/09/26 New Thermistor Thermometer Group Can Be Ordered At Less Cost
1984/09/26 New Inlet Valves Used In Cylinder Heads
1984/09/26 New Main And Connecting Rod Bearings Have Copper Bond Material
1984/09/26 Change To Maintenance Interval For Valve Lash Adjustment
1984/09/26 Surface Grinding Of Compacted Graphite Iron Cylinder Heads
1984/09/26 Improved Cylinder Heads And Valve Covers Used
1984/11/07 New Cylinder Heads, Fuel Nozzles And Fuel Nozzle Adapters Used
1984/11/07 New Oil Filter Group Can Be Used To Extend Oil Change Interval
1984/11/07 Temperature Adapter Group Can Be Used With A Caterpillar Multimeter
1984/11/07 New Water Temperature Regulator Has Higher Temperature Setting
1984/11/07 Cetane Injection Group Uses New Orifice, Tee and Seals
1984/11/07 New High Alloy Material Is Used In Cylinder Head Assemblies
1984/11/07 New Diaphragm Used In BrakeSaver Control Valve Group
1984/12/17 Identification Of Camshaft Groups And Valve Mechanism Groups
1984/12/17 Remanufactured Cylinder Head Groups
1984/12/17 Causes And Correction Of Opposite Crankshaft Rotation In Direct Injection Engines
1984/12/17 Starters That Remain Engaged After Engine Is Running
1984/12/17 Thread Identification Kit Available