Repair of the cylinder sleeve seat hole of the diesel generator set: when the plane of the cylinder block seat hole is uneven, the shoulder is damaged, or the top plane of the cylinder block has been repaired, the cylinder sleeve seat hole depth should be processed in order to use the adjusting gasket. The method is to machine the shoulder of the seat hole, install adjusting shims to obtain the correct cylinder liner protrusion. The thickness of the cylinder liner valve flange, such as cylinder liner protrusion A, plus the total thickness of the adjusting shim, reduces the depth of the cylinder liner seat hole.
The cylinder liner protrusion of diesel generator set is generally 0.15mm at least and 0.20mm at most. The measurement method of cylinder liner protrusion is as follows:
1. Insert the cylinder into the cylinder seat hole and use two cylinder liner pressure plates and two cylinder head bolts to tighten the cylinder liner. The tightening torque of the bolt is 65N · m.
2. Measure the protrusion of the cylinder liner with a measuring gauge. Place the gauge block so that the pointer of the dial gauge contacts the cylinder liner flange.
Adjust the dial indicator to zero the pointer. To ensure accurate measurement, lift the dial gauge head and release it. The pointer should return to the zero position.
3. Lift the dial gauge, move the gauge block, and let the gauge head fall onto the cylinder block, as shown in Figure 2-20b. Read the reading of the dial gauge, which is the protrusion of the cylinder sleeve.
4. The protrusion should be checked at four equally divided positions on the outer diameter of the cylinder liner. For each cylinder liner, the difference between the measured values at four positions shall not exceed 0.03mm.
5. If the measured protrusion of the cylinder liner exceeds the specified value, the cylinder liner should be removed. Check for burrs or dirt. After clearing, measure the part size again to calculate the protrusion. If the protrusion is still greater than the specified value, the depth of the cylinder liner seat hole should be machined.
6. If the protrusion is less than the specified value, the cylinder liner should be removed, and the protrusion should be adjusted by adding shims or using thickened counterbore rings.
The above is the repair method of the cylinder liner seat hole of the diesel generator set sorted out by Starlight for the user. I hope it will be helpful to the user. In addition, in order to better play the role of the generator and extend its use, Starlight recommends that users regularly check and maintain the diesel generator set at ordinary times.
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