VISUALLY CHECK TURBOCHARGER SUB-ASSEMBLY

INSPECT AXIAL PLAY OF TURBINE SHAFT

INSPECT RADIAL PLAY OF TURBINE SHAFT

CHECK TURBINE SHAFT ROTATION

INSPECT EXHAUST MANIFOLD RH AND LH

Check for deformation and cracks in the turbine wheel on the exhaust side.

If the turbine wheel is cracked or deformed, replace the turbocharger sub-assembly.

Using a dial indicator, insert the needle of the dial indicator into the exhaust side of the turbine shaft.

Move the turbine shaft in an axial direction and measure the axial play of the turbine shaft.

• NOTICE:

• Make sure that the turbocharger sub-assembly and any dial indicators are securely fixed in place when performing measurements.

• Maximum axial play:
• 0.09 mm (0.00354 in.)

If the axial play is more than the maximum, replace the turbocharger sub-assembly.

Connect a lever probe to a dial indicator.

Rotate the turbine shaft so that a part that has not been cut for shaft balancing is facing upwards on the air intake side.

Place the lever probe against the shaft at the position shown in the illustration.

Lift up both sides of the turbine shaft to move it in a radial direction and measure the radial play of the turbine shaft.

• Maximum radial play:
• 0.16 mm (0.00630 in.)

If the radial play is more than the maximum, replace the turbocharger sub-assembly.

Rotate the turbine wheel on the exhaust side with your finger and check that it rotates smoothly.

• HINT:

• Even if it takes a little effort to rotate the turbine wheel, this is not a problem.

If the turbine wheel does not rotate smoothly, replace the turbocharger sub-assembly.

Using a precision straightedge and feeler gauge, measure the warpage of the contact surface between the exhaust manifold and cylinder head.

• Maximum warpage:
• 0.80 mm (0.0315 in.)

If the warpage is more than the maximum, replace the exhaust manifold.