1984/09/26 Caterpillar


New Cylinder Block Groups Used

Usage:


3406 And 3408 Truck Engines

Description of Change: New cylinder block groups are used on 3406 and 3408 Truck Engines. These new cylinder blocks have a top deck that is approximately 5 mm (.2 ") thicker. This thicker top deck helps prevent movement of the cylinder liner in the cylinder block. This movement can cause damage (erosion) to the cylinder block in the area below the cylinder liner flange.

Adaptable As: The new 2W6756 Cylinder Block Group is a direct replacement for the former 7N1203 Cylinder Block Group in 3406 Truck Engines. These new cylinder block groups are in effect on 3406 Truck Engines with Serial Numbers 92U63473-Up. The new 2W4640 Cylinder Block Group is a direct replacement for the former 7N853 Cylinder Block Group in 3408 Truck Engines. These new cylinder block groups are in effect on 3408 Truck Engines with Serial Numbers 28V4539-Up.

Caterpillar Information System:

1984/09/26 Higher Compression Pistons Can Help Reduce White Exhaust Smoke During Cold Weather Starts
1984/09/26 New Service Tools Available
1984/09/26 Tune-up Kit And Remanufactured Nozzles Available
1984/09/26 New Fittings Used In Fuel Filter Lines Group
1984/09/26 New Thermistor Thermometer Group Can Be Ordered At Less Cost
1984/09/26 New Inlet Valves Used In Cylinder Heads
1984/09/26 New Main And Connecting Rod Bearings Have Copper Bond Material
1984/09/26 Change To Maintenance Interval For Valve Lash Adjustment
1984/09/26 Surface Grinding Of Compacted Graphite Iron Cylinder Heads
1984/09/26 Improved Cylinder Heads And Valve Covers Used
1984/09/26 Correct Installation Of Fuel Injection Pumps Can Prevent Fuel Leaks
1984/08/06 Installation Instructions For Turbocharger Bearing Kit
1984/11/07 Foil Shield Will Help Prevent Electrical Interference In Engine Set Point Indicator
1984/11/07 Remove Diode Assemblies From Shutoff Solenoids
1984/11/07 New Cylinder Heads, Fuel Nozzles And Fuel Nozzle Adapters Used
1984/11/07 New Oil Filter Group Can Be Used To Extend Oil Change Interval
1984/11/07 Temperature Adapter Group Can Be Used With A Caterpillar Multimeter
1984/11/07 New Water Temperature Regulator Has Higher Temperature Setting
1984/11/07 Cetane Injection Group Uses New Orifice, Tee and Seals
1984/11/07 New High Alloy Material Is Used In Cylinder Head Assemblies
1984/11/07 New Diaphragm Used In BrakeSaver Control Valve Group
1984/12/17 Identification Of Camshaft Groups And Valve Mechanism Groups
1984/12/17 Remanufactured Cylinder Head Groups
1984/12/17 Causes And Correction Of Opposite Crankshaft Rotation In Direct Injection Engines
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