COVER-OIL 5088205 - Caterpillar

The DOC utilizes a “pass-through” technology, which is different from the “wall flow” design of a DPF. When a light is shined through the DOC, a visible light should be able to pass through. Utilize a flashlight to check for a plugged DOC face. Aim the flashlight into the DOC inlet, visible light should be seen through the DOC. A plugged DOC can be caused by high oil consumption, not recommended fuel additives, or wrong engine oil types. Refer to the Operation and Maintenance Manual for recommended fluids to use. If light cannot be seen on the outlet of the DOC, then replace the DOC.CRS Bodies
Illustration 14 g06342815
Combustion Group
(1) Head Group - Combustion
(2) Gasket
(3) Tube
(4) Body Assembly - Exhaust CombustionCRS Combustion Body (4) contains the flame necessary for CRS Regeneration. There are two combustion stages that occur within the CRS Body: the primary and secondary combustion. The primary combustion of air and fuel occur within Tube (3) to create the CRS flame immediately following Head Group (1). The secondary combustion