Checking the company's contact brushes "Bosch"
Loosen the two fixing screws on the regulator.
Remove regulator.
Turn the adjuster so that the carbon brushes do not hang.
Measure the amount by which the carbon brushes protrude from the regulator.
If this value is only 5 mm, the brushes must be changed.
To control the length of contact brushes (1) in the generator "Bosch" remove the regulator (2) voltage. It is attached with two screws on the rear side of the generator. The minimum length of the contact brushes must be 5 mm (see arrows).
Replacement of contact brushes of the company "Bosch"
Carbon contact brushes are soldered to the holder with their connecting wires. Therefore, you will need a soldering iron. New brushes until July 1980 have a length of 10 mm, and from August 1980 12 mm.
Unsolder the connecting wires, remove the brushes.
Remove the pressure springs from the old carbon brushes and install them on the new ones.
Solder wires.
Checking the company's contact brushes "Motorola"
Unscrew both fixing screws of the regulator on the rear side of the generator.
Pull out the regulator and the holder of the carbon contact brushes located behind it.
Measure the length of the brushes.
If the residual length is only 5 mm, then the brushes are worn out.
Brushes should not be changed individually, but only together with the holder.
In the generator (1) firms "Motorola" to control the contact brushes, you need to remove the holder (2) brushes and regulator (3), located on top
Replacement of contact brushes of the company "Motorola"
Company brushes "Motorola" cannot be removed from the holder. The holder must be replaced complete with carbon brushes.
Disconnect the wires from the holder of the carbon contact brushes. The connector remains attached to the regulator.
Remove the green wire connector from the old brush holder and insert into the new holder.
The connector of the red cable is connected to the contact panel of the connecting plate.
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