Cover and Gasket Replacement
When installing a new cover, make sure that the cover and gasket are perfectly clean and that the gasket is installed correctly. After installation, tighten the screws as far as they will go. If dirt appears inside the regulator, clean the contacts and other parts of the regulator.
Soldering breaks
Soldering is performed by soldering with a neutral flux in a small amount, protecting the insulation from overheating. Remove excess flux after soldering, as flux residues, evaporating from the heat generated by the regulator during operation, can contaminate the contacts.
Cleaning contacts
To clean the contacts, remove the armature spring and, loosening the nut 6 (see fig. 159), raise the rack 8 of the fixed contact of the 1st stage. With a flat velvet file, the contacts are carefully cleaned, while removing burnt materials and oxides over the entire surface. The file must be completely dry, washed in pure alcohol or gasoline. The recesses that have arisen on the contacts due to burning must be cleaned with a clean steel pointed stud. Remove the silver filings from the regulator body by blowing it with dry and clean air.
Install the anchor spring in place. By moving the fixed contact rack of the 1st stage, the gap between the armature and the core is adjusted to (1,4±0,07) mm, making sure that the contacts are touching correctly. By moving the rack of the fixed contact of the 2nd stage, the distance between the contacts of the 2nd stage is adjusted to (0,45±0,1) mm, also making sure that the contacts are touching correctly. Tighten the nut 6, install the gasket and the cover in place, after which the regulator is checked on the stand and adjusted if necessary.
Cleaning the voltage regulator
In case of penetration of foreign substances into the regulator, after cleaning the contacts, before checking and adjusting, carefully rinse the regulator with pure alcohol or gasoline, then dry it (without cover) in an oven at a temperature of 120°C for 2 hours. Check the regulator on the stand and, if necessary, adjust it.