Coupling With A Slip Fit Now Used At Turbocharger Exhaust Outlet Instead Of Coupling With Piston Rings{1061}
Usage:
3412 Industrial Engine
Description of Change: An outlet coupling with a slip fit is now used at the turbocharger exhaust outlet instead of a coupling with piston-type rings. Tests have shown the coupling with a slip fit will prevent leaks for a longer period of time than the coupling with piston-type rings. This is possible, because there is less wear between the turbine housing and the coupling joint.
Adaptable As: Direct replacement on the engine arrangements shown in the chart.
INSTALLATION: Check the coupling bore in turbine housing for wear. If the bore in the turbine housing has too much wear, install a new housing before the new coupling is installed.
The coupling must turn freely so that there is no stress after assembly.
Caterpillar Information System:
1977/01/24 Same Valve Camshaft Assembly Used On Direct Injection Engines Now Used On Engines That Have Precombustion Chambers{1210}
1977/01/24 Adapter For Disassembly And Assembly Of Turbocharger Cartridge{0620,1053}
1977/01/24 Exhaust Valve Guides With A Counterbore Are Now Available{1104}
1977/01/24 Exhaust Manifold Coupling With A Slip Fit Now Used Instead Of A Coupling With Piston Rings{1061}
1977/01/24 Drain All Coolant From Engines Before Shipment For Remanufacturing{0355,1350}
1977/01/17 New Water Temperature Regulator Has A Closer Fit At The Valve Seat To Keep Leakage At A Minimum{1355}
1977/01/17 New Flywheel Assemblies Are Available For Use With Spicer Transmissions{1156}
1977/01/17 New Tie Bars Improve Stability Of The Fuel Injection Test Bench{0652}
1977/01/17 SIRS Component Code List{0331}
1977/01/17 New Special Instruction For Troubleshooting 5P2150 Engine Horsepower Meter{0651,1250}
1977/01/17 Blades For Hose Saw Cut Off Group Must Now Be Sent To New Address To Be "Resharpened"{0664}
1977/01/17 Improved Main And Connecting Rod Bearings Have Aluminum Alloy With More Strength{1230}
1977/01/24 New Cylinder Liners{1216}
1977/01/24 Lightening Holes Not Drilled In Some Crankshafts{1202}
1977/01/31 New Disconnect Switch Assembly Has Better Resistance To Corrosion{1411}
1977/01/31 Improved Crankshaft Main Bearing With Higher Strength Aluminum Alloy{1203}
1977/01/31 New Remote Control Switch Assembly For Electric Hydraulic Pumps{0621,0623}
1977/01/31 Transportation Notice Plate Is No Longer Needed For Pressurized Nitrogen Cylinders{7557}
1977/01/31 Low Emission Truck Engines With Exhaust Gas Recirculation (EGR) Systems{1050}
1977/02/14 Correct Use Of Plugs In Drain Holes Of Hydraulic Pumps That Have Two Seals On The Shaft-Use A Plug In Drain Hole Except With Water Glycol Systems{5055,5073}
1977/02/14 New 5P7307 Engine Turning Tool Group Fits All Engines{0611}
1977/02/14 Test Used Fuel Nozzles Before You Install New Nozzles; Tips On Test Procedures{1254,0651,0336}
1977/02/14 Diesel Fuel Recommendation Expanded{1280}
1977/02/28 Modification To Holder To Machine Counterbore On Cylinder Block{0664,1201}