Doosan D80S-5 - Inspect for Intake Leaks (LP Engine Only); Replace PCV Valve and Breather Element - Change (LP Engine Only); Replace Oxygen Sensor (G643 E Engine Only)

Maintenance Section
198
Inspect for Intake Leaks (LP
Engine Only)
1. Visually inspect the intake manifold, throttle
assembly (4), and manifold adapters (3), for
looseness and leaks. Repair as necessary.
Replace PCV Valve and breather
element - Change (LP Engine
Only)
1. Loosen the hose clamps and remove the PCV
valve.
2. Assemble new PCV valve and hose.
3. Tighten the hose clamps
Replace Oxygen Sensor (G643E
Engine Only)
Exhaust Tube
Muffler Ass’y
When indicated by MIL, replace oxygen sensors on
the exhaust tube and muffler assembly.
1. Stop engine and wait until the exhaust pipe and
exhaust pipe is cooled.
2. Disconnect the electrical connector of oxygen
sensor.
3. Remove oxygen sensor.
4. Assemble new oxygen sensor Tightening
torque : 45 N•m (32.5 lb•ft)
5. Connect the electrical connector of oxygen
sensor.