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:
1983/02/16 New Sealant Used Between The Fuel Injection Pump/Governor Drive Housing And Cylinder Block
1983/02/16 Improved Cylinder Head Gasket
1983/02/16 List Of Service Publications
1983/02/16 Special Instruction Available For "Troubleshooting And Repair Of The 6V2100 Multitach"
1983/02/16 Notice: Bolts, Washers Can Fall Into Suction Screen Housing And Damage Oil Pump
1983/02/16 New Expansion Tank And Support Used
1983/02/16 Service Information For Hydramechanical Shutoff Units
1983/02/16 New Water Pump Has Improved Seal
1983/01/19 New Piston Design
1983/01/19 Spring Seat Enlarger Available For Use On Cylinder Heads
1983/01/19 Fabricated Fixture Permits Easier Inspection Of Fuel Injection Nozzles
1983/01/19 Use Caution During Replacement Of Damaged Nozzle Adapters Or Precombustion Chambers
1983/02/16 Improved Mounting Assembly For Speed Switch Contactor Group
1983/02/16 Disconnect Fuel Lines And Install Caps Before Unit Injectors Are Removed
1983/02/16 Parts Service Information For Pistons
1983/02/16 New Clutch Retraction Pins And Seals
1983/02/16 Change In Repair Centers For 5P2160 Horsepower Meter Group
1983/03/16 Test Procedure For Hydramechanical Shutoff After Engine Storage
1983/03/16 New Rack Shutoff Solenoid Available
1983/03/16 New Clutches For Rear Power Take-Off
1983/03/16 Change Made To 6V3032 Deluxe Test Lead Kit
1983/03/16 Check Cylinder Bores For Chamfer During Reconditioning
1983/03/16 New Instruction Decal Used On 6V4060 Engine Set Point Indicator
1983/03/16 Additions To Reference Chart For Major Production Changes