Different O-Ring Seal Now Used On The Oil Pump Suction Tube{1307,1304}
Usage:
All 3406, 3408 And 3412 Engines In All Applications
Description of Change: A different O-Ring seal is now used where the oil pump suction tube connects to the oil pump on the above engines. See the illustration. The new O-ring is of a tan color and made from Viton while the former O-ring, which is of a yellow color, is made from Silicone. After a period of time, the O-rings made from Silicone can some times take a compression set and let air get into the oil pump suction line.
Adaptable As: The 5P5846 O-Ring Seal is a direct replacement for the 9M9647 O-Ring Seal in this application. The 9M9647 O-Ring Seal is still available for use in other applications.
Location where O-ring seal is used on oil pump suction tube.
Caterpillar Information System:
1980/12/01 New Front Housing Assembly And Gaskets Used{1162,1166,1151}
1980/12/01 New Service Handle Kit Permits Cab Door To Be Opened From Inside While Locked (Fastened With Lock){7308,7301}
1980/12/01 Larger Plug Used In The Ends Of The Rocker Arm Shaft Assembly{1102}
1980/12/01 Exhaust Manifold And Air Lines Groups Changed To Prevent Exhaust Leakage And Damage To Manifold Gaskets And Mounting Studs{1059,1061}
1980/12/01 Direct Inquiry Service Information Retrieval System (SIRS) Available To U.S. And Canadian Dealers{0374}
1980/11/24 Replacement Wheel Available For Service Of 6V97 Engine Stand Group{0626}
1980/11/24 6V4008 Valve Seat Extractor Now Available{1103,0622}
1980/11/24 New Gasket Improves Operation Of Shut-Off Groups{7418,7403}
1980/11/24 Use Fluid-Type Vibration Damper To Control Vibrations{1205,3305}
1980/11/24 New Aftercooler Core Has Copper-Nickel Tubes For Increased Strength{1063,1064}
1980/11/24 New Decals Permit Easier Identification Of Fuel System Settings On Most Truck Engines{7557}
1980/11/17 Some Remanufactured 3406 Engines Have The Wrong Reference Serial Number On The Identification Plate{7557,1000}
1980/12/01 Inspect All Engine Oil And Fuel Filter Elements Before Installation{1000,1261,1318}
1980/12/01 6V4085 Torque Multiplier Group Available{0614}
1980/12/15 New Bearing Sizes And Identification Codes For AiResearch Remanufactured Turbocharger Cartridges{1053}
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 Control Valve Group Used To Prevent Ratchet-Type Noise And Rough Clutch Engagement{3313}
1980/12/15 New Turbocharger, Turbocharger Oil Lines Group And Aftercooler Air Lines Group Used{1052,1058,1063,1307,1309}
1980/12/15 Replacement Timing Belts And Variable Belt For Fuel Injection Test Benches Available From Caterpillar{0652,1250}
1980/12/22 6V4019 Camshaft Pilot Group Is Available{0622,1210,1211,1201}
1980/12/22 Tires Are Filled With Nitrogen (N2){4203}
1980/12/22 Exhaust Elbow Support Improved{1059,1061}
1980/12/22 New Oil Pan Gasket Has Silicone Bead For Better Seal{1302}
1980/12/22 Wrong Turbocharger Group Shown In Parts Book{1052,0374}