Examination
To perform the work you will need a multimeter.
1. Remove the starter (see "Starter - removal and installation").
2. We clean the outer surface of the starter from dirt.
3. To check the traction relay, we connect its output "50" with the positive terminal of the battery, and the starter housing with a negative one. At the same time, for a working relay, the armature pushes the drive gear into the front cover window with a characteristic click.
4. To check the armature and stator windings, remove the back cover of the starter and disconnect the brush assembly (see below, "Repair").
5. By connecting one ohmmeter probe to the case, the other alternately
we connect to the terminals of the stator windings, checking the absence of their short circuit to the case.
In the absence of a short circuit, the ohmmeter should show a resistance of at least 10 kOhm.
6. Having connected the ohmmeter probes to the terminals of the stator windings, we check them for an open circuit.
If the resistance tends to infinity, the winding has broken.
7. Having connected one probe of the ohmmeter to the case, we connect the other alternately to the armature contact plates, checking the short circuit of the armature windings to the case.
In the absence of a short circuit, the ohmmeter should show a resistance of at least 10 kOhm.
Repair
1. socket wrench at 13 mm unscrew the nut and remove the stator winding terminal from the contact bolt.
2. Using a slotted screwdriver, unscrew the three screws securing the traction relay.
3. Remove the traction relay with a rod and a spring.
4. Using a slotted screwdriver, unscrew the two screws securing the armature shaft casing.
5. Remove the casing with the gasket, lock washer A of the rotor shaft and shims B.
6. socket wrench by 10 mm unscrew the two nuts securing the rear cover of the starter and remove it.
7. Disconnect the front cover from the housing along with the tie rods and the anchor.
8. socket wrench by 10 mm unscrew the lock nut of the eccentric axis of the drive lever.
9. Using a slotted screwdriver, unscrew the axis of the lever.
10. We take out the eccentric axis of the starter drive lever.
11. We remove the anchor from the tie rods of the body, disengaging the lever fork from the drive ring.
12. Having rested the armature shaft on a wooden surface, with a suitable mandrel we press the restrictive ring from the retaining ring.
13. Prying with a slotted screwdriver, remove the retaining ring from the shaft.
14. Remove the restrictive ring, freewheel with drive gear and housing bulkhead A from the armature shaft.
Assembly
1. We wash the starter parts with white spirit or kerosene, blow it with compressed air. Checking the condition of the parts. Covers and body must be free of cracks. Gear teeth should not show significant wear. The gear should easily rotate relative to the hub in only one direction - in the direction of rotation of the armature. On the surfaces of the splines and pins of the shaft there should be no burrs, nicks or wear marks. There must be no burns on the working surface of the collector. We remove small burns with fine-grained sandpaper. The brushes must move freely in the grooves of the brush holders. brush holders "positive" brushes should not have a short circuit with "weight". Worn to a height of less than 12 mm, the brushes are replaced with new ones.
2. Lubricate with engine oil the bearing surfaces and splines of the armature shaft, the splines of the overrunning clutch hub, the bearing bushings in the starter covers and the axis of the drive lever. Lubricate the drive ring of the overrunning clutch hub with grease.
3. We install a partition and a freewheel with a drive gear on the armature shaft.
4. We put the limiting ring of the gear travel on the shaft so that the smaller diameter of the inner conical surface of the ring faces the gear. We install a retaining ring in the groove of the shaft, crimp it and press the restrictive ring onto it with sliding pliers, if necessary, sinking the retaining ring into the groove with a slotted screwdriver.
5. Next, assemble the starter in reverse order.
6. Before installing the armature shaft casing, we check the axial play of the armature shaft, which should be no more than 0.5 mm. If necessary, adjust it by installing shims on the armature shaft (see above "Repair", item 5).
7. Install the casing.
8. Install the eccentric axis of the gear drive lever. By pressing the lever, we check the movement of the clutch. The rollers of the lever must not come out of the grooves of the ring. If necessary, adjust the position of the lever by rotating the axis. key on 10 mm tighten the nut, holding the axis with a slotted screwdriver from turning.
9. Install and connect the traction relay.