New Aftercooler Gaskets Help Maintain Constant Bolt Torque{1063,1079}
Usage:
3516 (28Z) Vehicular Engines
Description of Change: New gaskets are used in the water aftercooler groups. The new gaskets contain a sheet metal core with a rubberized coating. The new gaskets maintain boost and bolt torque better than the former gaskets. The former gaskets had a paper composition. Excessive compression of the gasket allowed the bolts to become loose. When this happened, the gasket could fail and cause a loss of boost in the inlet manifold.
Adaptable To: The new parts are direct replacements for the former parts. This change is adaptable to first production. See the chart for the correct part numbers.
Caterpillar Information System:
1990/08/01 New Manifolds And Bellows Assemblies Used In Exhaust Manifold Group
1990/08/01 Changes To Exhaust Manifold Expansion Sleeves And Bolts
1990/07/01 List of Service Publications
1990/07/01 New Digital Tachometers Available As Attachments
1990/07/01 Electrical System Damage From High Voltage
1990/07/01 Welding On Fuel And Hydraulic Tanks
1990/07/01 Correct Position Of Regulator Housing On Combined Water Lines Group
1990/07/01 New Turbocharger Gas Inlet Housing Used
1990/07/01 Improved Material Prevents Sagging Of Rear Manifold Section
1990/07/01 Boss Added To Keep Bolts From "Bottoming Out" In Expansion Tank Groups
1990/07/01 Special Instruction SEHS8700 Available For Installation Of Engine Flexible Mounting Group
1990/07/01 New Jacket Water Heater Groups Have New Thermostat
1990/08/01 Stronger Fan Guard Resists Vibration Damage
1990/08/01 Improvements Reduce Vibration To The Low Water Level Switch On Expansion Tanks
1990/08/01 New Caterpillar Parts Identification Label
1990/08/01 Bearing Information For SR 4 Generators
1990/08/01 Rotor Shaft Length Changed
1990/08/01 Spacer Available To Eliminate Cracks On Ignition Coil Mounting Bracket
1990/08/01 New Pistons Used
1990/08/01 New Throttle Shaft Bearing Sleeves Used In Governor Housing Assembly
1990/08/01 Dimensions For Aluminum Washer
1990/08/01 New Turbocharger Groups Reduce Exhaust Leaks
1990/08/01 New Flexible Exhaust Fitting Assembly (Bellows) Used With Exhaust Stack
1990/08/01 Improved Aftercooler Seal Used in Aftercooler Group