SEAL-CSHAFT-YM 3256191 - Caterpillar

Regeneration
Regeneration is the process of increasing exhaust temperatures to remove soot from the diesel particulate filter (DPF). Regeneration also reduces hydrocarbons across the diesel oxidation catalyst (DOC) & DPF, reduces sulfur from the selective catalyst reduction (SCR), and removes diesel exhaust fluid (DEF) deposits from the DEF injector. The DPF traps both soot and ash. The ash is removed through a manual cleaning process. Refer to Operation and Maintenance Manual, "Diesel Particulate Filter - Clean" for more information on the service of the DPF.Regeneration Indicators
Regeneration Active - When illuminated, this indicator shows that the system is active. This indicator shows that elevated emission temperatures are possible. This indicator will turn off when regeneration is complete.
DPF - This indicator will illuminate to show that regeneration is required. This indicator will illuminate when "Time to Regen" is less than a pre-determined amount of time.
Regeneration Disabled - This indicator will illuminate to show that regeneration has been disabled.Regeneration Switch
Force Regeneration - Press in the top switch for 2 seconds to begin regeneration.
Disable Regeneration - Press in the bottom switch for 2 seconds to disable regeneration.Note: If equipped with a rocker style switch, the MIDDLE position of the regeneration switch is the default position for automatic regeneration.Note: If the engine start switch key is cycled or the "Force Regeneration" switch is pressed for longer than 2 seconds the system will no longer be disabled. When the "Force Regeneration" switch is pressed and "Time to Regen" is less than 8 hours, regeneration will begin if the machine is at low idle and is parked.Note: If the engine start switch key is cycled while the regeneration system is disabled via the "Disable Regeneration" switch, press and hold the "Disable Regeneration" switch for 2 seconds to reinitiate.Modes of Regeneration
Automatic: The Electronic Control Module (ECM) uses multiple inputs from the engine and the machine to determine the best time to perform automatic regeneration. Automatic regenerations can take place throughout the operating cycle of the engine. The regeneration active indicator will be illuminated when regeneration is being performed. Interruptions of the regeneration are acceptable. If regeneration is in progress and needs to be stopped, it is permissible to press the "Disable Regeneration" switch.Note: Automatic adjustments of engine speed may be noticed during regenerations. If regeneration is taking place and the engine is taken to low idle, the engine speed may remain elevated to maintain the regeneration.Note: If the machine returns to work while automatic regeneration is active, the regeneration may be stopped. The ECM will continue to monitor inputs to determine the best time to restart the regeneration.Manual: Manual regeneration is initiated by pressing the "Force Regeneration" switch. Manual regeneration will only be allowed if the "Time to Regen" is less than 8 hours. If the "Force Regeneration" switch is pressed before "Time to Regen" is less than 8 hours, then “Regen not Required” will be displayed. The machine must be stationary, the parking brake must be applied, and the engine must be at low idle to