Turbocharger
TURBOCHARGERDISASSEMBLY AND REASSEMBLY
Disassembly Steps 1-8:
INSPECTION
TURBINE HOUSING
1. Check the housing for traces of contact with the turbine wheel, cracks due to overheating, pitching, deformation and other damage. Replace with a new turbine housing if cracked.
2. Operate the turbocharger waste gate valve lever manually to check that the gate can be opened and closed smoothly.
COMPRESSOR COVER
1. Check the compressor cover for traces of contact with the compressor wheel and other damage.
TURBINE WHEEL ASSEMBLY
1. Check the turbine and compressor wheel blades for bend, burr, damage, corrosion and traces of contact on the back side and replace if defective.
2. Check the oil passage of the turbine wheel assembly for deposit and clogging.
3. In the case of water cooled type, check also the water passage for deposit and clogging.
4. Check the turbine wheel and compressor wheel for light and smooth turning.
REASSEMBLY SERVICE POINTS
A O-RING INSTALLATION
1. Apply a light coat of engine oil to a new O-ring and fit in the turbine wheel assembly groove.
B TURBINE WHEEL ASSEMBLY INSTALLATION
1. Install the turbine wheel assembly to the compressor cover while aligning the dowel pin with the dowel pin hole.
CAUTION: Use care not to damage the blades of turbine wheel and compressor wheel.
C SNAP RING INSTALLATION
1. Fit the snap ring with its chamfered side facing up.
D TURBINE HOUSING INSTALLATION
1. Install the turbine housing while aligning the dowel pin with the dowel pin hole.
CAUTION: Use care not to damage the blades of turbine wheel.
E COUPLING INSTALLATION
1. Install the coupling and tighten to the specified torque
F TURBOCHARGER WASTE GATE ACTUATOR OPERATION INSPECTION
1. Using a tester, apply a pressure of approx. 72 kPa (10.3 psi) to the actuator and make sure that the rod moves.
CAUTION: Do not apply a pressure of more than 85 kPa (12.4 psi) to the actuator. Otherwise, the diaphragm may be damaged. Never attempt to adjust the turbocharger waste gate valve.