Two New Exhaust Manifolds Available For Replacement Of Single Rear Manifold To Prevent Broken Studs{1059}
Usage:
3408 Engines In All Applications
Description of Change: Two new exhaust manifolds are available for replacement of the single rear manifold on earlier 3408 Engines. Installation of the two new manifolds will prevent broken manifold studs, which have been a problem for some customers. The new manifolds have a slip-joint connection to prevent stresses on the studs caused by manifold expansion at high temperatures.
Adaptable As: The new 7N5218 Exhaust Manifold (Rear) and 7N5219 Exhaust Manifold (Center) used together, are a direct replacement for the former 4N1676 Exhaust Manifold (Rear) which is canceled.
Caterpillar Information System:
1981/03/02 High Concentration Of Aluminum In Oil Analysis Can Be The Result Of Rocker Arm Support Wear{1318,1102}
1981/03/02 Changes Have Been Made To Some Caterpillar Service Publications{0375}
1981/02/23 Changes Made To Power Cord Plugs On 5P6532 And 5P6533 Reader Projectors{0160}
1981/02/23 Pipe Plug Added To Rear Of Cylinder Block Prevents Oil Leakage Into Flywheel Housing{1201}
1981/02/23 6V4163 Bit And 6V4164 Driver Now Available For Removal Of Bolts For Flyweight Carrier{0612,1264}
1981/02/23 Do Not Adjust The Fuel Setting Or High Idle Higher Than Necessary{1257}
1981/02/23 Two New Oil Filter Assemblies Available; Always Use Correct Oil Filter And Follow Caterpillar Change Intervals{1318}
1981/02/23 Later Pistons Have A Smaller Number Of Drain Holes In Oil Ring Groove{1214,1213}
1981/02/23 New Governor Spring Available For Specific Engine Applications{1264,1265}
1981/02/16 Different O-Ring Seal Now Used On The Oil Pump Suction Tube{1307,1304}
1981/02/16 New O-Ring Seal Used In EGR (Exhaust Gas Recirculation) Control Has Better Resistance To Heat Damage{1080}
1981/02/16 New Publication: Engine Bearings And Crankshafts{0374}
1981/03/02 Modification Of Flywheel Prevents Loose Clutch Pilot Bearing{1155,1156}
1981/03/02 Check Oil Level Carefully To Prevent Operation With Too Much Oil In Engine Crankcase{1316}
1981/03/09 Correct Preparation Is Important To Prevent Damage During Extended Periods Of Storage{7500}
1981/03/09 New Poppet Valves And Piston Available As Replacement Parts; Automatic Center Punch Can Be Used To Install Piston{3012,0622,0626,3166,3185}
1981/03/09 Test Procedure For Exciter Reactors On SRSE Generators{4454}
1981/03/09 Special Studs And Nuts Available For Exhaust Manifolds On Engines Used In Heavy Load Conditions{1059,1101}
1981/03/09 Correct Installation Of Inserts Necessary During Repairs To Prevent More Counterbore Cracks{1217,1201}
1981/03/09 New Aftercooler Core has Improved Design To Prevent Vibration Damage Which Lets Coolant Into Engine Air Inlet{1064}
1981/03/09 Clean Electrical Contacts In Exhaust Gas Recirculation (E.G.R.) Switch Group And Cover Assembly Before Installation{1080}
1981/03/16 Approximate Liquid (Refill) Capacities Added To Specifications Page In Parts Book{0374}
1981/03/16 5P1075 And 5P1076 Washers Have A Different Design{7553,0680}
1981/03/16 New Inlet And Exhaust Valves And Valve Guides Have Tighter Fit To Prevent Corrosion And Guide Wear{1104,1105,1101,1103,1108,1109}