For legacy generators «positive» valves were pressed into a separate aluminum plate (radiator) A «negative» – in cover 1 (see fig. Generator G-221). For such generators, if one or more «positive» valves, it is necessary to replace the radiator together with the valves.
1. Damaged «negative» valves pressed into cover 1 of the generator can be replaced with serviceable ones of the same polarity. To do this, carefully press out the faulty valve on the press (1 - punch A.76027, 2 - support A.76029, 3 - support plate A.76032). You can not knock it out with a hammer, so as not to spoil the hole for the valve and not damage other serviceable valves pressed into the cover.
2. Press the new valve carefully, without distortion, into the cover also on the press (1 - punch A.76027, 2 - "negative" valve, 3 - support A.76013, 4 - generator cover). It is strictly forbidden to press the valve with hammer blows.
3. The pressing force must act on the valve body as shown in the figure (the arrows indicate the places on which the punch A.76028 should act when pressing).
4. The valves are pressed until the flange stops in the generator cover. For valves with a non-knurled collar near the flange, a gap of 0.1–1 mm is allowed between the valve flange and the cover surface.