Correct Planet Gear Bearings Must Be Used For Parts Service Of Transmission Gear Trains{3176}
Usage:
776 Tractors And 777 Trucks
The correct planet gear bearings must be used for parts service of the transmission gear trains in 776 Tractors and 777 Trucks.
The 5P6441 Special Caged Bearing, which has a black color, must be used in the planet gears for the Number 1 gear train.
The 5M578 Caged Bearing, which has a silver-color cage, must be used in the Number 2 gear train.
These bearings have different capacities and must NOT be used in place of one another. The bearings must be used in the correct locations or the result will be early bearing failure.
Location of 5P6441 Special Caged Bearing and 5M578 Caged Bearing in transmissions for 776 Tractors and 777 Trucks.
Caterpillar Information System:
1980/01/28 Different Seal For Control Shaft In Power Control Box{5201}
1980/01/28 Reinforcement Plates Can Be Added To Make The Fuel Tank Stronger{1273}
1980/01/28 New 6V199 Socket For Use On Fasteners In Areas With Limited Clearance{0612}
1980/01/28 Radiator Fan Blades Can Be Damaged If They Come In Contact With Large Quantities Of Water{1356}
1980/01/28 New Cross-Over Steering Relief Valve Used{4322}
1980/01/21 New Fuel Injection Nozzle Assembly Used{1254}
1980/01/21 New Rock Ejectors Have Reinforcement Plates On Both Sides For Increased Strength; Ejector Mounting Bracket Changed On 777 Trucks{7157}
1980/01/21 Spacers Must Be Removed Before Finish Welds Are Made During Assembly Of Truck Body; Revision To Special Instruction{7258,7500}
1980/01/21 New Piston Groups Have The Piston Pin Bore Off-Center, Away From The Thrust Side Of The Piston{1214}
1980/01/14 Use The FT1481 Bracket To Hold The 1P2371 Micrometer In Position During Bore Size Measurement{0655,0663}
1980/01/07 Improved Ring Seal Used At Rear Of Crankshaft {1161}
1980/01/07 Important: XT3 And XT5 Hose Assemblies Must Be Fabricated And Installed Correctly For Maximum Service Life {5057}
1980/01/28 Installation Procedures For 5N5880 Remote Shut-Off Group And 5N6336 Oil Pressure Indicator Gauge Group{7418,7403,7455}
1980/01/28 Oil Drain Hole Added To Spacer Plate Cylinder Block To Permit Use Of Scroll Fuel System{1201,1221}
1980/02/04 New Cylinder Liner Has Improved Design To Keep Liner Temperatures Lower{1216}
1980/02/04 Change To Gear On Accessory Drive Shaft Assembly Gives Longer Service Life{1207,1206}
1980/02/04 Real Value Available Through Caterpillar Remanufacturing Programs{0374}
1980/02/04 New Bonnet Used On Transmission Oil Cooler; Bracket Holds Bonnet To Oil Pan{1375,1302}
1980/02/04 Shock Absorber Now Used In Belt Tightener Group{1358}
1980/02/04 New Turbocharger Group Has A Water-Cooled Bearing Housing{1052,1053,1073,1380,1307}
1980/02/04 Different Nuts Now Used To Adjust Preload On Bearings For Differential And Bevel Gears{3258,3256,3257}
1980/02/11 Warning: Avoid Use Of Fuel Mixtures Of High Volatility. If You Are Exposed To Such Mixtures, Be Aware Of The Hazards Involved And Take Proper Precautions{1280}
1980/02/11 New Bearing Retainer Plate Is Used In Carrier Rollers{4154}
1980/02/11 New Gasket Gives A Better Seal Between The Flywheel Housing And Cylinder Block{1157,1201}