OPERATING PROCEDURES GRT9165 OPERATOR MANUAL
4-10 Published 7-23-2020, Control # 668-02
•Active: Active cleaning occurs when there is insufficient
heat in the exhaust system to convert all the
hydrocarbon being collected in the exhaust system.
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 system. This is done without operator
input.
•Manual: Manual, or stationary, cleaning is the same as
active cleaning but takes place when crane is not being
operated. It allows the operator to perform cleaning
outside of the normal duty cycle.
If the exhaust system begins to clog and needs cleaned, the
Engine Exhaust Cleaning Required Indicator comes on in
the Alerts Area of the ODM Main Screen (refer to Alerts Area,
page 4-74).
The indicator comes on (constant) during the early stages of
required cleaning. If this condition continues, the indicator
will begin to flash and a slight engine derate will occur.
If the exhaust system continues to clog, the Engine Warning
Indicator in the Alerts Area comes on in addition to the
Exhaust Cleaning Required Indicator and a severe engine
derate will occur.
These above conditions can only occur if cleaning has been
inhibited or a manual cleaning was interrupted.
When the Engine Exhaust Cleaning Required Indicator is on
constant or flashing, start the manual cleaning process at the
next opportune time. Refer to section titled Exhaust System
Cleaning (If Equipped), page 4-155 for procedures to
manually clean the exhaust.
As a warning, the High Exhaust System Temperature
(HEST) strobe light (1, Figure 4-1) near the exhaust pipe (2,
Figure 4-1) will flash during exhaust system cleaning.
Shutdown Procedure
1. Allow engine to run at fast idle speed for about five
minutes to avoid high internal heat rise and allow for
heat dissipation.
2. Turn ignition switch counter-clockwise to the 0 (OFF)
position.
3. Drain fuel filter-water separator.
4. If crane is to be inactive for more than 24 hours,
disconnect the batteries using the battery disconnect
switch
To avoid possible engine fault codes and undesirable
operation, make sure the keyswitch has been off for 2
minutes before disconnecting the batteries.
SUSPENSION HEIGHT
The suspension on the rear tandem axles is adjustable.
• Fully lower the suspension for transportation.
• Set the suspension to the Ride Height when traveling
the crane or performing a pick and carry.
• Fully raise the suspension when performing an
On-Rubber, Stationary, 360° lift (such as required for
removing/installing the outrigger boxes).
Refer to the section titled Suspension Raise/Lower, page
4-107 for procedures on how to raise and lower the
suspension.
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