Exhaust Manifold: Service and Repair
REMOVAL AND INSTALLATION
Removal Service Points
[A] Heated Oxygen Sensor
[B] Turbocharger Assembly Removal
Remove the turbocharger assembly with the exhaust fitting, water pipe assembly (A), water pipe assembly (B) and the oil pipe assembly attached to it.
[C] Oil Pipe Assembly Removal
CAUTION: After disconnecting the oil pipe, take care that foreign material does not enter the oil passage hole of the turbocharger assembly.
Installation Service Points
]A[ Turbocharger Assembly Installation
1. Clean the alignment surfaces shown in the illustration and also the eye bolts and any blockages inside the pipe.
2. If there are any carbon deposits inside the turbocharger oil passage, clean them off using compressed air or some other method.
CAUTION: When cleaning, take care that no foreign material gets into the engine coolant or oil passages hole.
3. Supply clean engine oil through the oil pipe installation hole of the turbocharger assembly.
]B[ Coned Disc Spring/Flange Nut/Flange Bolts Installation
1. Install the coned disc spring in the shown direction.
2. Tighten the flange nuts and bolts to 27 - 31 Nm (20 - 23 ft. lbs.).
3. Use the special tool to further tighten by 60° - 70°.
INSPECTION
Turbocharger Assembly Check
1. Visually check the turbine wheel and the compressor wheel for cracking or other damage.
2. Check whether the turbine wheel and the compressor wheel can be easily turned by hand.
3. Check for oil leakage from the turbocharger assembly.
4. Check if the turbocharger waste gate valve remains open. If any problem is found, replace the part after disassembly.
Oil Pipe Assembly And Oil-Return Pipe Check
Check the oil pipe assembly and oil-return pipe for clogging, bending, or other damage. If there is clogging, clean it.