Usage:
3408 Truck and Industrial Engines, 3412 Industrial Engines
Description of Change: An exhaust manifold coupling with a slip fit is now used instead of a coupling with piston-type rings. Tests have shown the coupling with a slip fit will prevent leaks for a longer period of time than the coupling with piston-type rings.
Adaptable To: All 3408 and 3412 Engines except Industrial and Marine Engines equipped with water-cooled exhaust manifolds.
INSTALLATION: Check the inside diameter of the elbows that the coupling fits into for existing wear. If the elbows have too much wear replace them before a new coupling is installed.
Put a thin application of high-temperature sealant on the outside diameter of each end of the coupling before installation.
Location of coupling.