New Camshaft Gear Has More Resistance To Pitting{1210,1212}
Usage:
All 3408 And 3412 Engines
Description of Change: New camshaft assemblies are used on all 3408 and 3412 Engines. The gears on these camshafts have more resistance to pitting than the gears used on the former camshafts.
Adaptable As: On 3408 Engines the new 2W7980 Camshaft Assembly is a direct replacement for the former 1W5058 Camshaft Assembly. On all 3412 Engines, the new 2W5289 Camshaft Assembly is a direct replacement for the former 4N9053 Camshaft Assembly. Both of the former camshaft assemblies have been canceled. The new 2W5288 Gear used in the new camshaft assembly can also be used as a replacement for the 7N8345 Gear used in the former camshaft assembly.
Caterpillar Information System:
1983/07/04 Damaged Lifter Bores In 3400 Series Engines Can Be Used Again{1201,0374}
1983/07/04 New Tachometer Drive Group Adapter Assemblies Have A Larger Input Shaft{7462,7487}
1983/07/04 Different Method Can Be Used To Take Oil Sample{5057,0372}
1983/07/04 Improved Governor Control Shaft And Seal Will Help Prevent Oil Leakage{1265}
1983/07/04 Prevent Damage To Brake Lining Before And During Installation{4254,4001}
1983/06/20 Frequency Meter Failure; Make Sure It is Connected To The Correct Voltage{7471,7002}
1983/06/20 New Double-Wall Fuel Injection Lines Group And Fuel Drain Group Available As Attachments For Protection Against Fuel Leakage{1252,1254,7400}
1983/06/20 Seal Kit Available For Differential Lock Solenoid{3272}
1983/06/20 Differential Bevel Pinion Has Permanently Bonded Plug{3254,3258}
1983/06/20 6V7100 Combustible Gas Leak Detector And 6V7103 Calibration Kit Available{0651}
1983/06/20 New Fuel Priming Pump Used{1258}
1983/06/06 Sealed Bearings Available For Pump Drive Shaft Universal Joint{3251,3253}
1983/07/11 New Oil Pan Group Gives Easier Access To The Oil Drain Adapter{1302}
1983/07/11 New Oil Filter Elements Available For Engine, Transmission And Hydraulic Applications{1318,3067,3179,5068}
1983/07/11 Use A Pipe Plug For Repairs of Small Holes In Castings{1201,1350}
1983/07/11 New Track Motor{3201,4351,5058}
1983/08/08 New 6V7070 And 6V7800 Digital Multimeters Available{0651}
1983/08/08 Hydraulic Boring Machine Available{0664}
1983/08/08 Special Instruction Has Repair Procedure For 6V4060 Engine Set Point Indicator Group{0651}
1983/08/08 New Duo-Cone Seals In Rear Brake Group Have Steel Seal Rings{4208}
1983/08/08 New Procedure And New Tool Can Be Used To Remove Cylinder Sleeves From The Cylinder Block{1222,1223}
1983/08/15 New Service Tools Available{0600}
1983/08/15 Stick Cylinder Rod Will Not Move In Fully Retracted Position; Cylinder Rod Has New Design{5458}
1983/08/15 Latch Kit Available For Repair Of Seat Cushion{7312}