Toro Groundsmaster 5900 Operator's Manual page 49

DPF Ash Accumulation
•
The lighter ash is discharged through the exhaust
system; the heavier ash collects in the soot filter.
•
Ash is a residue of the regeneration process. Over
time, the diesel particulate filter accumulates ash
that does not discharge with the engine exhaust.
•
The computer for the engine calculates the amount
of ash accumulated in the DPF.
InfoCenter Active Fault Messages—Ash Accumulation
Indication
Level
Level 2:
Engine
Warning
SPN 3720 Too High Severe
Level 3:
Engine
Warning
Level 4:
Engine
Warning
Active Fault
g214980
Figure 51
Check Engine
g214979
Figure 52
Check Engine
SPN 3720
g214978
Figure 53
Check Engine
SPN 3251 High
•
When enough ash accumulates, the engine
computer sends information to the InfoCenter in
the form of a system advisory or an engine fault to
indicate the accumulation of ash in the DPF.
•
The advisory and faults are indications that it is
time to service the DPF.
•
In addition to the warnings, the computer reduces
the power produced by the engine at different
ash-accumulation levels.
Engine Speed
Engine Power Rating
Reduction
None de-rates the engine
None de-rates the engine
Engine speed at max
de-rates the engine
torque + 200 rpm
49
Recommended Action
Service the DPF;
The computer refer to
Diesel-Oxidation Catalyst
power to 85% (DOC) and the Soot
Filter (page
Service the DPF;
The computer refer to
Diesel-Oxidation Catalyst
power to 50% (DOC) and the Soot
Filter (page
Service the DPF;
The computer refer to
Diesel-Oxidation Catalyst
power to 50% (DOC) and the Soot
Filter (page
Servicing the
74).
Servicing the
74).
Servicing the
74).