New Coolant Level Switch Used{7470,1354}
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:
1982/10/11 New Main And Connecting Rod Bearings Have A Thicker Layer Of Lead-Tin Overlay (Surface Material){1230,1203,1219}
1982/10/11 Wider Crankshaft Gear Used{1202,1204,1206}
1982/10/11 Hose Presses Can Now Be Used To Service 9.52 mm (.375") JIC Couplings{0623,0624,7554}
1982/10/11 Improvement To 1N4679 Control Rod Assembly Increases Range Of Adjustment For Rack{1257}
1982/10/11 Extended Storage Procedures{1000,3300}
1982/10/11 New Fasteners Used For Fuel Injection Lines{1252}
1982/10/11 Engine Slobbering; New Piston And Rings Used{1214,1215,1000,1225,1104,1052}
1982/10/11 Altronic III Ignition Systems Available{1560}
1982/10/11 Bulged Capsule-Type Fuel Nozzles{1254}
1982/10/11 Field Conversion Procedure For EPA Certified On-Highway Truck And On-Highway Vehicle Engines{0374,0375,7557,1250}
1982/10/11 Indications From 6V3100 Timing Indicator Group Must Be Corrected For Some Applications{0651,1250,1156,1157}
1982/10/11 Service Information For Easier Use Of The 6V3100 Timing Indicator Group{0651,1250,1156,1157}
1982/10/18 Changes In Engine RPM; Governor Does Not Operate Correctly{1264}
1982/10/18 Improved Valve Cover Seal{1107}
1982/10/18 Tools For Use With 7S1100 Hydraulic Press To Assemble Couplings On 31.8 mm (1.25") I.D. XT-6 Hose{0624,7554}
1982/10/18 New Crankshaft Seal Group Has Assembled Rear Seal And Wear Sleeve{1161}
1982/10/18 Fuel In The Cooling System Or Coolant In The Engine Oil Can Result From Cracked Fuel Nozzle Adapter{1106}
1982/10/18 Additional 3208 Remanufactured Truck Engines Available{1000,1200}
1982/10/18 FT1698 Driver Can Be Used For Reconditioning Of Governor Housing{0626,0665,1264,1286}
1982/10/25 Resurfaced Cylinder BlocksAnd Heads{1201,1101,1000}
1982/10/25 New 6V6080 Torque Multiplier Available{0614}
1982/10/25 Reference Chart for Engine Improvements{0374,1000}
1982/10/25 Cold Weather Engine Operation{1105,1208,1355,1380}
1982/10/25 Improvements To Generator-Mounted Control Panels{4450,7400}