New Oil Pan Gasket Has Silicone Bead For Better Seal{1302}
Usage:
D346 (73X1125-Up),
D348 (98S1762-Up) Vehicular Engines;
D348 (57K1287-Up),
D349 (32R447-Up) Off-Highway Truck Engines;
641B, 651B, 657B, 776, D10 Tractors;
777 Trucks
Description of Change: A new gasket is used between the front and rear sections of the oil pans on the above models. The new gasket has a silicone bead to give a better seal than the former gasket.
Adaptable As: The new 1W1403 Gasket can be used as a direct replacement for the former 7N6670 Gasket for the above models.
Caterpillar Information System:
1980/12/22 Exhaust Elbow Support Improved{1059,1061}
1980/12/22 Tires Are Filled With Nitrogen (N2){4203}
1980/12/22 6V4019 Camshaft Pilot Group Is Available{0622,1210,1211,1201}
1980/12/15 Replacement Timing Belts And Variable Belt For Fuel Injection Test Benches Available From Caterpillar{0652,1250}
1980/12/15 New Turbocharger, Turbocharger Oil Lines Group And Aftercooler Air Lines Group Used{1052,1058,1063,1307,1309}
1980/12/15 New Control Valve Group Used To Prevent Ratchet-Type Noise And Rough Clutch Engagement{3313}
1980/12/15 Be Sure To Cut The Center Gasket Even With Top Surface Of Oil Pan Sections To Prevent Oil Leakage{1302}
1980/12/15 New Bearing Sizes And Identification Codes For AiResearch Remanufactured Turbocharger Cartridges{1053}
1980/12/01 6V4085 Torque Multiplier Group Available{0614}
1980/12/01 Inspect All Engine Oil And Fuel Filter Elements Before Installation{1000,1261,1318}
1980/12/01 Different O-Ring Seal Now Used On The Oil Pump Suction Tube{1307,1304}
1980/12/01 New Front Housing Assembly And Gaskets Used{1162,1166,1151}
1980/12/22 Wrong Turbocharger Group Shown In Parts Book{1052,0374}
1981/01/12 Improvements Made To 5P9718 And 6V186 Disc Pads Used During Gasket Removal{0675,0670}
1981/01/19 New Connecting Rod And Main Bearings Have A Thicker Coating (Layer) Of Lead-Tin Overlay{1230,1219,1203}
1981/01/19 Thicker Layer Of Chrome Now Used On Governor Spring Guide To Extend Its Service Life{1264}
1981/01/19 6V3141 And 6V3142 Puller Plates Available For Removal Of Tube And Gland From Front Suspension Groups{7201,0621}
1981/01/19 Inspection And Test Procedures To Follow When Fuel Ratio Control Does Not Operate Correctly{1278}
1981/01/19 New Sure Seal Electrical Connectors Used In Electrical Wiring Harnesses; Use 6V3000 Seal Repair Kit To Repair Sure Seal Electrical Connectors{0611,1408}
1981/01/19 Be Sure You Assemble The Turbocharger Lubrication Valve Correctly{1309,1052,1300}
1981/01/26 Ways To Prevent Damage To Spark Ignited Industrial Engines When Hydrogen Sulfide Is Present In The Fuel{1000,1280,1318,1350}
1981/01/26 Improved Tach Drive Adapter Has Step In Shaft To Keep Coupling Engaged{0651,0653}
1981/01/26 6V3150 Engine Pressure Group And 6V3121 Multitach Group Are Available For Testing Engines{0650,1000}
1981/01/26 Use Scheduled Oil Sampling To Find Change Intervals For Hydraulic Oil{5068}