New Coolant Level Switch Used
Usage:
D379B, D398B, D399, G379, G398 And G399 Engines And All 3500 Series Engines
Description of Change: A new coolant level switch is used in the expansion tank group for the above engines. The new switch was designed so that the weight of the float is not on the pointer shaft. This will prevent coolant leakage into the front of the switch caused by O-ring seal wear.
Adaptable As: The new 6T1390 Switch is a direct replacement for the former 2N9768 Switch in this application.
Caterpillar Information System:
1982/10/20 New Fuel Nozzle Test Sheet Available
1982/10/20 Electrical System Voltage Must Be Limited To A Maximum Of 40 Volts With Woodward Model 2301 Governors
1982/10/20 Altronic III Ignition Systems Available
1982/10/20 Indications From 6V3100 Timing Indicator Group Must Be Corrected For Some Applications
1982/10/20 Service Information For Easier Use Of The 6V3100 Timing Indicator Group
1982/10/20 Changes In Engine RPM; Governor Does Not Operate Correctly
1982/09/22 Improved Lubrication System
1982/09/22 Reusability Of Camshaft Rollers And Roller Followers
1982/09/22 New Tool Makes Installation Of Carbon Stop Seals Easier
1982/09/22 Metal Particles On Magnetic Pick-Up Can Permit Engine RPM To Vary; Move Pick-Up To A New Location
1982/09/22 New Rear Support For Oil Cooler Is Thicker, Has Cast-In Spacers
1982/09/22 New Bearing Used In Air Starting Motor
1982/10/20 Improvements Made To Marine Transmissions
1982/10/20 Bulged Capsule-Type Fuel Nozzles
1982/10/20 Wider Crankshaft Gear Used
1982/10/20 Engine Slobbering; New Piston And Rings Used
1982/10/20 New Water Pump Uses New Seal And Impeller
1982/10/20 Extended Storage Procedures
1982/10/20 Improvement To 1N4679 Control Rod Assembly Increases Range Of Adjustment For Rack
1982/10/20 List Of Service Publications
1982/10/20 New Connecting Rod And Main Bearings Have Thicker Layer Of Surface Material
1982/10/20 Reconditioning Of Oil Pump Covers
1982/10/20 Improved Valve Cover Seal
1982/10/20 Planned Engine Repairs