Regarding the measurement of the crosshead shoe clearance in reciprocating compressors, and the measurement of the concentricity between the crosshead and the cylinder.
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1. For the crosshead sliding shoes, we currently use a feeler gauge to check both sides; the minimum gap is taken as the standard for the same side, and the feeler gauge is also used at all four corners as well. The gap deviation must not be too large. Is this way of operating correct? 2. Measurement of the concentricity between the crosshead and the cylinder: experienced workers say the wire-tension method should be used. How exactly is this procedure carried out?
1. The maximum and minimum clearance of the crosshead must both be measured. 2. Yes. Pulling the wire is quite annoying. A laser alignment tool can be used