For diesel generator set maintenance, often tighten the firmware with a wrench, or knock the fastener by hand. Therefore, the installed diesel engine often fails in the work, and some even cause serious accidents. The important fasteners for diesel engine assembly should be noted as follows to attract the attention of mechanics and maintenance personnel.
1. Cylinder head nut. When tightening the cylinder head nut, tighten it to the specified torque step by step according to the principle of first center and then diagonal crossing of both sides. The cylinder should be unscrewed step by step in the prescribed order. Uneven or uneven tightening of the cylinder head nut will lead to warping of the cylinder head plane. If the nut is tightened too tightly, the bolt will stretch out of shape and the body and threads will be damaged. If the nut is not screwed tightly enough, it will cause air leakage, water leakage, oil leakage, and high temperature gas in the cylinder will burn out the cylinder pad.
2. Flywheel nut The flywheel of S*95 diesel generator is connected with the crankshaft by conical and flat keys. For installation, tighten flywheel nut and lock with thrust washer. If the flywheel nut is not tightened tightly, the diesel engine will produce knocking sound when working, serious will damage the crankshaft cone, cut the keyway, twist the crankshaft, causing serious accidents. Also, note that the Angle of the thrust washer can only fold once.
3. Connecting rod bolts. Steel processing of connecting rod bolts in the work of high impact, can not be replaced by ordinary bolts. The torque should be uniform when tightening, and the two connecting rod bolts should be tightened several times in turn and locked with galvanized iron wire. If the connecting rod bolt tightening torque is too large, it will make the bolt tensile deformation or even fracture, resulting in cylinder accident; If the connecting rod bolt tightening torque is too small, bearing bush clearance, when working to produce knocking sound and impact load, even burning tile shaft and connecting rod bolt fracture.
Post time: Nov-02-2022