Ditch Witch JT100, Operator'S Manual

Page: 197 / 268

Service - 196
JT100/JT100 All Terrain Operator’s Manual
Recommended Lubricants/Service Key
Exhaust Cleaning
This engine has a Selective Catalytic Reduction (SCR) system that uses a small amount of DEF to convert
NOx emissions in the exhaust into nitrogen and water. The SCR system cleans itself automatically, unless
it is manually inhibited by the operator.
Automatic exhaust cleaning happens during normal machine operation when sensors in the
engine determine the need. During an engine exhaust cleaning cycle, engine exhaust can reach
high temperatures. When this happens, the high exhaust temperature icon will light.
If the jobsite is in an area where high exhaust temperature might cause a problem, inhibit exhaust
cleaning through the Tier 4 menu (see “System settings key” on page 51) for the duration of the
job and return to automatic cleaning when the job is finished. The exhaust cleaning inhibited icon
will light and remain on until the system is returned to automatic exhaust cleaning mode.
The exhaust cleaning icon will light when the system is inhibited and an exhaust cleaning cycle is
needed.
• The icon will light when an automatic cleaning is needed. If the area will allow it, return the
unit to automatic cleaning mode in the Tier 4 menu and let it run automatically.
• The icon will flash when a manual cleaning is needed. Set the engine to low throttle with no load and
initiate the manual exhaust cleaning cycle through the Tier 4 menu. The light will continue to flash until
the manual exhaust cleaning cycle is finished (approximately 30 minutes).
• A manual exhaust cleaning cycle is required after automatic exhaust cleaning has been inhibited
multiple times. If manual cleaning is not done when indicated, the engine will derate.