Check of technical condition of details

Anchor. Check the megohm meter or by means of the lamp fed by voltage of 220 V whether there is no short circuit of a winding of an anchor on weight.
Tension through a lamp is brought to plates of a collector and to the anchor core. Burning of a lamp indicates short circuit of plates of a collector with a weight. When checking the megohm meter has to show resistance not less than 10 kOhm. Replace the anchor having short circuit with a weight.
The special device check whether there are no short circuits between sections of a winding of an anchor and plates of a collector, and also whether there are no breaks in the place of a pripayka of conclusions of sections of a winding to collector plates.
Examine a working surface of a collector. Smooth out the polluted or burned surface a fine-grained grinding skin.
Check a core beating concerning shaft pins. If it more than 0,08 mm — replace an anchor.
Check a condition of surfaces of shliyets and pins of a shaft of an anchor. On them there should not be zadir, забоин and wear. If on a surface of a shaft traces of yellow color from the gear wheel plug appeared, remove them with a fine-grained grinding skin as they can become the reason of jamming of a gear wheel on a shaft.
Drive. The drive of a starter has to freely, without noticeable jammings to move on an anchor shaft. The gear wheel has to be turned concerning an anchor shaft under the influence of the moment no more than 27,4 N · by cm (2,8 kgfs · cm). In the opposite direction the gear wheel should not be turned. If on a zakhodny part of teeths of a gear wheel there are zaboina, then polish them a fine-grained emery circle of small diameter.
If details of the drive are damaged or are considerably worn-out, replace the drive new.
Stator. Check the megohm meter or by means of the lamp fed by voltage of 220 V whether there is no short circuit of a winding of the stator on weight. Tension through a lamp is brought to the general conclusion of a winding and to the starter case. If the lamp burns or the megohm meter shows resistance less than 10 kOhm and also if windings have overheat traces (isolation blackening), replace the case with windings.
Covers. Check whether is not present on covers of cracks. If they are available — replace covers new. Check a condition of plugs of covers. If they are worn-out, then replace covers assembled or only plugs. Deploy new plugs after a press fitting to (12,015+0,03) mm.
At ST-221 starter to replace the plug from a collector, previously take a cap, and after a press fitting of the plug establish a cap into place and a raskernita in three points.
Check reliability of fastening of brush holders on a cover from a collector. Brush holders of positive brushes should not have short circuits with a weight. Brushes have to move freely in grooves of brush holders. Replace the brushes which are worn out on height to 12 mm new, previously having ground in them to a collector.
Check a dynamometer effort of springs on brushes which for new brushes has to make 9,8±0,98 N (1±0,1 kgfs) and, if necessary, replace springs new.
Traction relay. Check ease of movement of an anchor of the relay. Check an ohmmeter whether contact bolts of the relay a contact plate become isolated. Whether check an ohmmeter there is no break in windings of the traction relay.
If in windings of the relay there is a break, or contact bolts of the relay a contact plate do not become isolated, then replace the relay new.
If the relay of folding execution, then it is possible to sort it and to smooth out contact bolts and a plate a fine-grained skin or a flat velvet file. At considerable damage of contact bolts to the place of contact with a contact plate it is possible to turn bolts on 180 °.