How to change slip rings on a generator rotor
A car alternator needs servicing periodically. Usually, the installation of new bearings and brushes is required, but over time, the contact rings on the rotor also wear out, the replacement of which is more labor-intensive and requires adherence to a strict sequence of actions. The principle of replacing them is the same for almost all cars, so using this description you can restore the rotor manifold on any generator.
After disassembling the generator, its armature is clamped in a vice. The bearing is removed from the rotor shaft using a puller.
After this, the cross-shaped plug covering the contacts is dismantled. It is simply pryed off with a screwdriver and removed.
Next, you need to disconnect the contacts of the slip rings from the armature windings. A mechanic's screwdriver is used for this. Its tip is applied to the contacts closer to the shaft, and they are cut one by one with a hammer blow.
Having cut the contacts, you can begin dismantling the rings.To do this, 2 identical heads or simply pipe cuttings are placed on the sides of the shaft. Screwdrivers rest in them, the ends of which pry the rings from below. Using 2 screwdrivers as levers, you need to rip the rings off the shaft.
After removing the manifold, dry glue will remain on the shaft splines. It needs to be scraped off with a knife or the tip of a screwdriver. Then the armature winding contacts are cleaned.
New rings are put on the shaft and seated completely with hammer blows. You need to hit through a wooden block so as not to deform or split them.
Next you need to solder the contacts of the winding and rings. To do this, they are first treated with a solution of rosin or soldering acid. Then the contacts need to be tinned one by one and soldered together. Perhaps the distance between them does not allow soldering, then a jumper should be used. It uses copper wiring. It is also tinned and soldered between the contacts. It is important to check that the solder does not touch the metal surfaces of the armature, but only connects the contacts.
After soldering, the contacts are closed back with a cross-shaped plug, a bearing is mounted on top of the shaft and the armature is installed back. In fact, nothing is difficult, the main thing is to act without haste, cut the contacts when dismantling closer to the rings, and then, when installing, do not hit the new collector directly with a hammer.
Required tools:
- vice;
- bearing puller;
- locksmith screwdrivers – 2 pcs.;
- hammer;
- heads for 17 or 14 – 2 pcs.;
- soldering iron
Replacing slip rings
After disassembling the generator, its armature is clamped in a vice. The bearing is removed from the rotor shaft using a puller.
After this, the cross-shaped plug covering the contacts is dismantled. It is simply pryed off with a screwdriver and removed.
Next, you need to disconnect the contacts of the slip rings from the armature windings. A mechanic's screwdriver is used for this. Its tip is applied to the contacts closer to the shaft, and they are cut one by one with a hammer blow.
Having cut the contacts, you can begin dismantling the rings.To do this, 2 identical heads or simply pipe cuttings are placed on the sides of the shaft. Screwdrivers rest in them, the ends of which pry the rings from below. Using 2 screwdrivers as levers, you need to rip the rings off the shaft.
After removing the manifold, dry glue will remain on the shaft splines. It needs to be scraped off with a knife or the tip of a screwdriver. Then the armature winding contacts are cleaned.
New rings are put on the shaft and seated completely with hammer blows. You need to hit through a wooden block so as not to deform or split them.
Next you need to solder the contacts of the winding and rings. To do this, they are first treated with a solution of rosin or soldering acid. Then the contacts need to be tinned one by one and soldered together. Perhaps the distance between them does not allow soldering, then a jumper should be used. It uses copper wiring. It is also tinned and soldered between the contacts. It is important to check that the solder does not touch the metal surfaces of the armature, but only connects the contacts.
After soldering, the contacts are closed back with a cross-shaped plug, a bearing is mounted on top of the shaft and the armature is installed back. In fact, nothing is difficult, the main thing is to act without haste, cut the contacts when dismantling closer to the rings, and then, when installing, do not hit the new collector directly with a hammer.
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