- A) Disconnect the air hose.
- b) Remove the two bolts securing the actuator to the turbocharger housing.
- V) Remove the retaining ring that secures the stem to the valve and remove the actuator.
2. Adjust the stroke of the actuator rod.
Note: Adjustment is carried out on the installed actuator.
- A) Install a dial gauge, apply 1.09 bar pressure to the actuator and measure the stroke.
- b) Based on the measured stroke value, select the required washer thickness from the table below.
Stroke, mm | Recommended washer thickness, mm |
1,20-1,70 | - |
1,71-2.29 | 0,5 |
2,21-2,70 | 1,9 |
2,71-3,20 | 1,5 |
3,21-3,70 | 2,0 |
3,71-4,20 | 2,5 |
4,21-4,70 | 3,0 |
4,71-5,20 | 3,5 |
5,21-5,70 | 4,0 |
5,71-6,20 | 4,5 |
6,21-6,70 | 5.0 |
6,71-7,20 | 5,5 |
7,21-7,70 | 6,0 |
7,71-8,20 | 6,5 |
Note:
- A set of washers of various thicknesses can be used to obtain the required thickness (0.5; 1.0; 2.0; 3.0 mm).
- Use the same set of washers of varying thicknesses between the actuator and housing.
- If the required washer thickness is greater than 3.5 mm, then replace the actuator set bolts
- V) Install if necessary — new washers and bolts, pressurize to 1.09 bar. Tightening torque: 19 Nm.
- G) Apply 1.09 bar pressure to the actuator and recheck the stroke. Nominal value: 1.20-1.70 mm.
Replace washers if necessary.
4. Connect the air hose.
5. Check boost pressure (see subsection "Vehicle checks").