SHAFT 4D8656 - Caterpillar

Products Machine Engines All 3500 Series All C175 SeriesCaterpillar Products Machine Engines All 3500 Series All C175 SeriesService Magazine, SEPD1475, 03, August 2012, "Insulation on Exhaust Components for 3500 and C175 Machine Engines". The original article has been revised to add effectivity.Caterpillar does not recommend aftermarket insulation on the exhaust components. Damage to exhaust components has been reported for machine engines with aftermarket insulation on the exhaust manifold and/or on the turbocharger. Increased fuel, oil, and water temperatures have been reported.In selected instances, Caterpillar may provide the insulation as an option from the factory. Ordering insulation as an option from the factory will ensure that the entire balance of heat of the engine is considered. The heat load will be addressed at the factory.