PLUG AS 2385507 - Caterpillar

3608 (6MC),
3612 (9RC) EnginesDescription of Change: New exhaust manifold groups are used to help prevent failure of the rear bellows. The rear bellows in the former manifold groups could fail because of misalignment and/or thermal loads.Adaptable To: The new 4P0431 Exhaust Manifold Group is a direct replacement for the former 9Y3208 Exhaust Manifold Group on 3608 Engines. The new 4P0434 Exhaust Manifold Group is a direct replacement for the former 7E7236 Exhaust Manifold Group on 3612 Engines. The new exhaust manifold groups are in effect with 3608 Engine 6MC325 and 3612 Engine 9RC86. Chart A and Illustration 1 identify the components required to install the rear bellows from the new manifold group on the former manifold group on 3608 Engines. Chart B and Illustration 2 identify the components required to install the rear bellows from the new manifold group on the former manifold group on 3612 Engines.
Illustration 1. Location of components required to install rear bellows from new 4P0431 Exhaust Manifold Group on former 9Y3208 Exhaust Manifold Group on 3608 Engines.
Illustration 2. Location of components required to install rear bellows from new 4P0434 Exhaust Manifold Group on former 7E7236 Exhaust Manifold Group on 3612 Engines.