2. Check the axial clearance of the compressor shaft.
Install the dial indicator on the compressor side, moving the turbine wheel by hand, measure the axial clearance. Axial clearance is not more than 0.11 mm.
If the axial clearance is out of range, replace the turbocharger.
3. Check the radial clearance of the compressor shaft.
- A) Through the oil drain hole from the turbocharger, install the indicator on the compressor shaft.
- b) While moving the shaft in the radial direction, measure the radial clearance. Radial clearance: no more than 0.18 mm.
If the radial clearance is out of tolerance, replace the turbocharger.
4. Check the operation of the actuator drive.
- A) Disconnect the actuator diaphragm hose.
- b) Pressurize the diaphragm to approximately 1.09 bar: the actuator stem must move and the valve must open.
Warning: never pressurize the diaphragm more than 1.22 bar.
