POWER TRAIN RT880E SERVICE MANUAL
7-6 Published 11-10-2014, Control # 524-00
To manually clean, set the crane parking brake, the crane
transmission must be in neutral and have all pedals
released. Refer to Exhaust System Cleaning Indicator,
page 7-5 for a description of when manual exhaust system
cleaning is needed.
Set up a safe area around the crane’s exhaust; remove tools,
rags, grease or any debris from the engine exhaust area.
With the engine idling push the Exhaust System Cleaning
Switch to initiate exhaust system cleaning.
As a warning, the light above the exhaust pipe will blink
during exhaust system cleaning.
Pressing accelerator pedal during exhaust system cleaning
or activating the Inhibit Exhaust System Cleaning Switch will
interrupt the exhaust system cleaning process.
Make sure the crane and surrounding area are monitored
during manual exhaust system cleaning. If any unsafe
condition occurs, shut off the engine immediately.
During this period the sound of the engine may change.
When exhaust system cleaning is complete the engine will
return to it’s normal idle speed.
Inhibit Exhaust System Cleaning Indicator
The Inhibit Exhaust System Cleaning Indicator is located in
the steering column gauge display. When the Exhaust
System Cleaning Switch is in the inhibit exhaust system
cleaning position, this amber indicator is illuminated and
active and manual exhaust system cleaning is prevented.
High Exhaust System Temperature
The High Exhaust System Temperature (HEST) Indicator is
located in the steering column gauge display.
During exhaust system cleaning it is possible for the engine
exhaust to reach temperatures exceeding 1200° F. The
HEST indicator will illuminate red to warn the operator when
temperatures reach 1247°F (675°C) and will stay on until the
temperatures falls below 1157°F (625°C).
The HEST Lamp does not indicate a fault, and is provided for
the operator’s information and warning for bystanders.
Warning lights near the tailpipe will flash during exhaust
system cleaning when high exhaust temperatures exist.
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