For details of regeneration prohibition, see Operating the engine to regenerate the DPF for regeneration inhibit mode
on page 50.
NOTE :
• If the engine is stopped once, the auto-regeneration mode will be activated.
3.1 Operating the engine to regenerate the
DPF for auto regeneration mode
(1) Parked regeneration switch
(2) DPF INHIBIT switch
(3) Regeneration indicator
(4) Parked regeneration indica-
tor
(5) Engine rpm increase indica-
tor
(6) Engine warning indicator
1. Start the engine.
2. Make sure that the DPF INHIBIT-switch lamp
is “OFF.”
DPF INHIBIT-switch lamp is off
Auto regeneration mode is activated.
DPF INHIBIT-switch lamp is on
Regeneration-inhibit mode is activated.
NOTE :
• When the engine is started, the auto-
regeneration mode is automatically
activated.
• When the DPF INHIBIT-switch is pushed
after the engine is started, regeneration-
inhibit mode is activated.
When the regeneration indicator starts
flashing, a specific amount of PM has built up in the
DPF.
3. Continue to operate the tractor.
The regeneration process will begin automatically.
Make sure that the working place is in a safe area
because DPF and exhaust temperature will rise.
4. When the engine rpm-increase indicator
starts flashing, keep on working and increase the
engine rpm until engine rpm-increase indicator
turns “OFF.”
NOTE :
• Even if the auto-regeneration mode is
selected, DPF regeneration may not begin
because system requirements have not been
satisfied.
• The engine rpm-increase indicator is used
as a guide to satisfy the regeneration
conditions. If the engine load is too heavy,
the engine rpm-increase indicator may
continue to flash, even though regeneration-
system conditions are satisfied and
regeneration may begin automatically.
(See Tips on diesel particulate filter (DPF)
regeneration on page 52.)
3.1.1 PM warning level and required procedures for auto regeneration mode
During auto-regeneration mode when the PM level has built up in the DPF, the regeneration cycle will begin
automatically. If the regeneration cycle is interrupted or the regeneration conditions are not satisfied, the buzzer starts
sounding and the indicator display changes in response to the PM level in order to prompt the operator to perform the
required procedure listed in the following table.
IMPORTANT :
• Once the regeneration level has been reached, immediately perform the required procedure for
regeneration.
Interrupting the regeneration cycle or continuing operation while ignoring the warning signs may cause
DPF and engine damage.
OPERATING THE ENGINE EXHAUST AFTERTREATMENT DEVICES
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