1, welding repair parts against rust. After the agricultural machinery is welded and repaired, the paint around the weld is often badly roasted and will rust after a while. In order not to rust in the weld repair area, the welding slag can be knocked off after welding, and a layer of grease should be applied when it is cooled to about black (about 100°C), so that it will generally not rust again.
2, ordinary welding welding repair iron pieces. When cast iron pieces are welded with ordinary carbon steel electrodes, it is easy to produce cracks. However, it is not economical to use cast iron electrodes. The solution is to cut along the welds with a small current. Note that only the grooves are cut and not cut, and then hot welding is performed. repair. Since the local stress around the cracks is eliminated during the cutting process, no new cracks will be produced during the repair.
3, Qiao repair valve. After the valve of the motor vehicle tire is damaged, the damaged portion may be sawn off, and a hole with a depth of 20 mm is drilled with a drill with a diameter of 4.5 mm, and tapped with a tap of M5 with a thread depth of 13 mm and screwed on the valve core to inflate. However, it should be noted that the drill tip should be ground to the same angle as the valve cone seal cone.
4. Cleverly remove the cylinder head. If you remove the cylinder head nut, the cylinder head is still difficult to remove, you can use a hammer to knock a few times around the cylinder head, and then shake the crankshaft, with cylinder pressure press the cylinder head.
5, heating water blocking ring. Due to the cold weather in winter, the water blocking ring becomes brittle, and it is easy to break when installed on a cylinder liner. At this time, the water blocking ring can be soaked in warm water of about 60°C for 5 minutes, and then removed and installed.
6, heating rolling bearings. When installing the rolling bearing on the bearing, if there is no special equipment or tools, directly hitting with a hammer will easily deform the bearing. At this point, you can first heat the rolling bearing and then install it, light a 60W bulb, put the bearing to be installed on top, heating 5-10 minutes (heating temperature is maintained at about 110 °C, do not exceed 120 °C), after removal Quickly install on the shaft.
7, how to make the cork mat is not easy to break. Valve cover gaskets of multi-cylinder diesel engines made of cork, although with good sealing performance, are easily broken. If the upper surface is coated with a layer of paint (not coated below) during installation, the cover pad will stick together with the cover. When it is disassembled later, it is not easily broken because it is integral with the cover.
8. Check the direct current generator bearing clearance on the locomotive. With a suitable voltage battery, one pole is connected to the generator housing, and the other pole is quickly switched on and off with the magnetic field terminals. Sometimes the magnetic field is not available. If the generator bearing clearance is normal, no sound will be generated; if the clearance is too large, the rotor shaft will vibrate under the intermittent magnetic force to make a sound, and the larger the gap, the louder the sound.
9, two kinds of pistons can not use each other. The piston of the CC195 diesel engine has a 2.5 mm smaller distance from the center axis of the pin hole to the top of the piston than the S195 diesel engine, so the two cannot be used interchangeably.
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