Anchor check
Attention. Depending on the year of manufacture and version, some of the values below may differ from those of your vehicle's instrumentation.
1. Remove starter assembly.
2. Disassemble the starter.
3. Check the armature for wear or damage from permanent magnet contact.
4. Check the surface of the switch. If the surface is dirty or burnt, clean the surface with sandpaper.
5. Measure the beat of the commutator.
If commutator runout is within tolerance, check commutator for coal dust or copper shavings between segments.
If the commutator beat is out of range, replace the armature.
- Switch beat (standard value): 0.02mm max.
- Switch beat (limit value): 0.05 mm.
6. Check the depth of the grooves (A) If the groove depth is too high (IN), cut them with a hacksaw to the required depth. Cut all grooves (C) between anchor segments. Undercut should not be too shallow, too narrow or V-shaped (D). Standard groove depth: 0.5 mm, limit value 0.2 mm.
7. Check for continuity between the switch segments. If there is an open circuit between any segment, replace the anchor.
8. Using an ohmmeter, check the absence of electrical conductivity between the commutator and the core of the armature coil and between the commutator and the armature shaft. If there is electrical conductivity, replace the armature.
Starter brushes
Worn or oily brushes must be replaced.
Checking the brush holder
1. Check the absence of electrical conductivity between (+) brush holder (A) And (-) brush mounts (IN). If there is no continuity, replace the brush holder assembly.
Attention. The figure below is schematic and may differ from the actual one.
2. Pry up each brush spring with a screwdriver, then position the brush about half of its mount and loosen the spring to secure it in place.
3. Install the anchor on the body and install the brush holder. Next, raise each brush spring again and lower the brushes down until they are on the commutator, then loosen the spring against the end of the brush.
Note. To install the brushes, run sandpaper between the commutator and each brush and rotate the armature slowly. The contact surface of the brushes will take the contour of the commutator.
Overrunning clutch test
1. Move the freewheel along the shaft. Replace freewheel if clutch does not move smoothly.
2. Rotate the freewheel in both directions. Lock in one direction and gently rotate in the opposite direction. If it does not lock in either direction, replace the freewheel
3. If the starter drive gear is worn or damaged, replace the freewheel assembly (gear not available separately).
Check the flywheel or torque converter ring gear if the starter drive gear teeth are damaged.