Low Manifold Pressure: New Gasket Prevents Air Leakage At Aftercooler
Usage:
All 3306 Engines Equipped With Aftercoolers
Description of Change: A new gasket is now used in the aftercooler group (water) on the above engines. The new gasket is used between the inlet and outlet adapters and the aftercooler housing. The new gasket will make a better seal at these junctions.
The former gasket had notches in it to give clearance for the bolts. It has been found that air leakage was possible at these notches, in some applications. The result of this air leakage was lower manifold pressures.
Adaptable As: The new 2W3679 Gasket is a direct replacement for the former 9L5904 Gasket, which is canceled.
Caterpillar Information System:
1983/03/02 Parts Service Information For Pistons
1983/03/02 New Instruction Decal Used On 6V4060 Engine Set Point Indicator
1983/03/02 Fabricated Fixture Permits Easier Inspection Of Fuel Injection Nozzles
1983/03/02 Check Cylinder Bores For Chamfer During Reconditioning
1983/03/02 New Piston Group Has A Thicker Top Ring
1983/03/02 Engine Valve Stem "use Again " Specifications
1983/03/02 Water Pump Impellers Can Be Reconditioned
1983/03/02 Special Instruction Available For "Troubleshooting And Repair Of The 6V32100 Multitach"
1983/03/02 New Water Pump Has Improved Seal
1983/01/26 New Piston Design
1983/01/26 New Crankshaft Assemblies
1983/01/26 List Of Service Publications
1983/03/02 Change Made To 6V3032 Deluxe Test Lead Kit
1983/04/13 Improved Valve Springs Available
1983/04/13 New Manual Brakesaver Control Group
1983/04/13 New Turbocharger Inlet Tube Assembly And New Seal Available
1983/04/13 New Shutoff Solenoid Group Used
1983/04/13 Fabricated Bracket Decreases Stress On Refrigerant Compressor Bracket
1983/04/13 Additions To Reference Chart For Major Production Changes
1983/04/13 Oil Passage Plugs Are No Longer Installed In Crankshaft For Parts Service
1983/04/13 Use FT1783 Fixture To Drill Vent Holes In Impeller
1983/04/13 Use The 6V5000 Infrared Thermometer Group To Measure Temperatures
1983/04/13 List Of Service Publications
1983/04/13 New Connecting Rod Bearings Used