Install New Plugs To Prevent Oil Leaks At The Oil Filter Base{1306}
Usage:
D346, D348 and D349 Vehicular Engines;
641B, 650B, 651B, 657B, 660B, 666B, 772 and 776 Tractors;
992 and 992B Loaders;
773 and 777 Trucks
Description of Change: Brass plugs are now installed in the oil filter base to prevent leaks. The new plugs seal better than the former pipe plugs and decrease possible leakage.
Adaptable As: The new 5P4110 Plug is a direct replacement for the former 3B551 Plug.
In the near future a change will be made to the oil filter base. The holes for the plugs will have straight threads. A different plug and an O-ring seal will be used to seal the opening in the oil filter base.
Location of plugs for oil filter base.
Caterpillar Information System:
1977/05/23 Orifice In Oil Supply Passages Of BrakeSaver Stator Prevent Seal Leakage{1155}
1977/05/23 Parts In 1P3075 Seal Puller Group Available Separately{0621,1160,1161}
1977/05/16 Flare Nut Wrenches Available{0610}
1977/05/16 Use Special Instruction Form SEHS6929 For Repair And Maintenance Information On All Roll-Over Protective Structures (ROPS){7323,7325}
1977/05/16 Stronger Guide Assembly For Oil Level Gauge Used On Caterpillar-Built Engines In Massey-Ferguson Tractors{1300}
1977/05/16 New 5P4185 Fuel Pump Timing Pin To Be Used Only On 3408 And 3412 Engines{0650,1257}
1977/05/16 Correct Installation Of Valve Lifters On The Camshaft Is Very Important To Prevent Failures{1209}
1977/05/09 New Fuel Nozzle Assembly Available{1254}
1977/05/09 New Information On Caterpillar Cooling System Inhibitor{1350}
1977/05/09 Improved Air Cleaner Group{1051}
1977/05/09 Shorter Bolts Now Used In Exhaust Manifold Support{1059}
1977/05/09 New Rotor Assembly For Engine Oil Pump Has A Drilled Passage For Better Lubrication Of Oil Pump Bearing{1304}
1977/05/23 Method Of Piloting Power Generator To Engine Improved{1156,1157,4450}
1977/05/30 New Gasket Used At The Outlet Flange On Heavy-Duty Air Cleaner Group{1051}
1977/05/30 Self Locking Bolts Or Hardened Washers Used In Place Of Sheet Metal Locks{3300}
1977/05/30 Improvements To Aftercooler Water Lines{1063,1380}
1977/05/30 Fabricated Tools For Assembly And Disassembly Of 7271 Marine Transmission{0621,3300}
1977/06/06 Improvements To Fuel Injection Pump And Governor{1286}
1977/06/06 New Tool For Installation Of Tandem Drive Chains On All Series G Motor Graders{0621,4063}
1977/06/06 Water Pump Has Stronger Pulley{1361}
1977/06/06 5P7386 Seal Driver For Hydraulic Pumps And Swing Motor{0622,5058,5070}
1977/06/13 New Adapter Group For Use With Fuel Injection Test Bench{0652}
1977/06/20 5P7333 Tool Group Available For The Repair Of Loose Bridge Dowels On Cylinder Heads{0663,1101}
1977/06/20 Socket For Removal And Installation Of Fuel Injection Pump Bushings is Now Stronger{0612,1253}