New Gasket Used In Exhaust Manifold Group
Usage:
3406 Engines (90U, 91U, 92U)
Description of Change: A new exhaust manifold gasket is used on 3406 Engines. The new gasket has a different design, and will give longer service life than the former gasket.
Adaptable As: The new 7N8175 Gasket is a direct replacement for the former 4N789 Gasket, which is canceled. A quantity of six gaskets are used per engine.
Caterpillar Information System:
1978/08/30 Improved Guide Pin For Fuel Injection Pump Lifters
1978/08/30 Tips For Service Information Retrieval System (SIRS) Users
1978/08/30 New Vent Tube For Water Cooled Turbocharger
1978/08/30 Overlap Joint On Crankshaft Front Seal Ring Prevents Leakage
1978/08/30 New Nozzle Assembly Used In Fuel Injection Valves
1978/08/30 List Of Service Publications
1978/08/30 Improved Piston Pins Are Made Of Different Material For Better Hardness Characteristics When Heat Treated
1978/08/30 New Oil Supply Line And Gasket For Turbocharter
1978/08/30 Sleeve-Type Ring Compressors Can Be Used For Installation Of Pistons From The Bottom Of The Engine
1978/08/30 New Camshaft Rear Bearing For The Sleeve Metering Fuel System
1978/08/30 The Causes And Reduction Of White Exhaust Smoke During Cold Engine Starts; Maintenance Aids Available To Decrease This Problem
1978/08/30 Different O-Ring Seals Now Used In Fuel Injection Pump Group
1978/08/30 New Diaphragm Used In Mechanical Shut-Off Groups Has Identification For Correct Installation
1978/08/30 New Water Pump Gives More Pressure
1978/08/30 New Torque Specification Used On Bolts That Hold The Cylinder Head
1978/08/30 New Drive Adapters For Fuel Injection Test Bench
1978/09/27 Tips For Service Information Retrieval System (SIRS) Users
1978/09/27 New Springs Available For Forward And Reverse Clutches, And New Tool To Correctly Position The Clutches Of Twin Disc MG514 Marine Transmission
1978/09/27 New 5P8744 Adapter Assembly And Special Instruction Procedures For 5P4150 Nozzle Tester Group
1978/09/27 Correct Procedure To Adjust Front Power Takeoff Clutches
1978/09/27 List Of Service Publications
1978/10/18 Correct Installation Of Crankshaft Thrust Plates Is Very Important To Prevent Engine Damage
1978/10/18 Use New 6V22 Tool Group To Make Replacement Of Worn Governor Spring Guides
1978/10/18 Modification To Rack Adjusting Tool Needed For Higher Rack Settings