Maintenance Section
-236-
Replace Oxygen Sensor (LP, Dual
Fuel Engine Only)
GCT K25 Engine
When indicated by MIL, replace oxygen seasor on
the exhaust manifold and oxygen sensor on 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.
G424P(E) Engine
When indicated by MIL, replace oxygen seasor on
the exhaust manifold and oxygen sensor on 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.
WARNING
When assembling the filters, check the arrow
mark on the filter surface.
The arrow mark position is same as fuel flow
direction.
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