7-5
RT770E POWER TRAIN
Published 11/26/2014, Control # 447-05
Engine Stop Light
The Engine Stop Light is located in the steering column
gauge display. It is a red indicator light that illuminates to
signify a serious engine problem that requires the vehicle
and the engine to be stopped as soon as safely possible.
The engine should remain shut down until the fault can be
repaired.
Engine Warning Light
The Engine Warning Light is located in the steering column
gauge display. It is an amber indicator light that is a part of
the engine’s electronic control system and when illuminated,
gives the operator a signal that there is a engine problem
which must be corrected.
Diesel Particulate Filter Indicator (Tier 4 Engines
Only)
The Diesel Particulate Filter (DPF) indicator is located in the
steering column gauge display. This indicator illuminates
amber when the diesel particulate filter is getting filled with
soot and needs to be cleaned out.
The indicator will be lit continuously during the early stages
of clogging. If the system continues to clog, the lamp will
begin to flash.
If even more clogging occurs, the engine warning light will
illuminate in addition to the DPF indicator and the engine will
shut down.
The regeneration process can take place in three different
modes:
Passive: The exhaust is hot enough during normal working
operation to burn off any hydrocarbon (soot) accumulation.
Active: Active self-regeneration occurs when there is not
sufficient heat in the exhaust to convert all the hydrocarbon
being collected in the DPF. Exhaust temperatures are raised
by injecting a small amount of fuel. The resulting chemical
reaction raises exhaust gas temperatures high enough to
oxidize the hydrocarbon from the filter. This is all done
without any operator intervention.
Manual: Manual or stationary, regeneration is the same as
active regeneration but takes place while the equipment is
not being operated. It offers the equipment operator the
option, if needed, of performing regeneration outside the
normal duty cycle.
CAUTION
Engine Shut-down Condition!
When the DPF indicator illuminates or flashes start
regeneration process.
Should the engine light come on with the DPF indicator,
the engine will shut down and an authorized engine
manufacturer service person must be contacted to re-start
the engine.
WARNING
Fire or Burn Hazard!
During the regeneration process the exhaust becomes
very hot. Do not park the vehicle near flammable objects.
Use caution near the exhaust tailpipe during regeneration
as it will become very hot.
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