Doosan D50S-5 Operation & Maintenance Manual page 199

Every 3000 Service Hours or 18 Months Every 3000 Service Hours or 18 Months
You must read and understand the warnings and instructions contained in the Safety section of this manual, You must read and understand the warnings and instructions contained in the Safety section of this manual,
before performing any operation or maintenance procedures before performing any operation or maintenance procedures
DPF Maintenance –Ash Cleaning DPF Maintenance –Ash Cleaning
Ash cleaning services is recommended by the Ash cleaning services is recommended by the
designated repair shop, if not, it can lead to designated repair shop, if not, it can lead to
damage of the product and system. damage of the product
Visit designated Repair & Inspection Shop for Ash Visit designated Repair & Inspection Shop for Ash
Cleaning service every 3000 Hours or 18 Months. Cleaning service every 3000 Hours or 18 Months.
If not the efficiency of filtering and performance of If not the efficiency of filtering and performance of
back pressure would be reduced. back pressure would be reduced.
WARNING WARNING
and system.
Muffler Ass'y Muffler Ass'y
When indicated by MIL, replace oxygen sensors on When indicated by MIL, replace oxygen sensors on
the exhaust tube and muffler assembly. the exhaust tube and muffler assembly.
1. 1. Stop engine and wait until the exhaust pipe and Stop engine and wait until the exhaust pipe and
exhaust pipe is cooled. exhaust pipe is cooled.
2. 2. Disconnect the electrical connector of oxygen Disconnect the electrical connector of oxygen
sensor. sensor.
3. 3. Remove oxygen sensor. Remove oxygen sensor.
4. 4. Assemble Assemble new new
torque : 45 N•m (32.5 lb•ft) torque : 45 N•m (32.5 lb•ft)
5. 5. Connect the electrical connector of oxygen Connect the electrical connector of oxygen
sensor. sensor.
198 198
oxygen oxygen sensor sensor Tightening Tightening
Maintenance Section Maintenance Section