Checking the electromagnetic relay
1. Before starting the test, disconnect the negative terminal of the battery.
2. Disconnect the terminal "M" wires from the starter terminal.
3. Check for continuity between the terminal "S" (A) and the traction relay housing, if there is no circuit, replace the starter with a new one.
A. Klemma «S».
V. Klemma «IN».
S. Klemma «M».
4. Check the presence of an electrical circuit between the terminals "S" (A) And "M" (IN), if there is no chain, replace the starter with a new one.
A. Klemma «S».
V. Klemma «IN».
S. Klemma «M».
Clutch gear check
1. Check the condition of the drive gear teeth. If teeth are worn or damaged, replace drive gear. Also check the condition of the flywheel ring gear teeth.
2. Check the condition of the gear teeth of the gearbox (if it exists). If the teeth are worn or damaged, replace the reduction gears (also check the condition of the gear teeth on the armature shaft).
3. Check whether the drive gear is blocked when it rotates in one of the directions and whether it rotates in the opposite direction. If the gear is blocked or the gear turns freely in both directions, or excessive resistance is felt when it rotates, replace it.
Checking the brushes
1. Check the amount of wear of the brushes, replace if excessive wear.
2. Having disconnected the brush spring, check its clamping force. If the brush springs are too weak, replace them with new ones.
3. Check the brush holder:
Check the insulation between the brush holder (positive side) and foundation (negative side). If breakdowns are found, replace the brush holder with a new one.
Visually check the smooth movement of the brushes. If the brush holder is deformed, replace it with a new one. If the sliding surfaces are deformed, clean them.
Stator check
The magnets are fixed to the stator with an adhesive. Visually check the reliability of the fixation of the magnets in the stator and the absence of cracks. Replace the defective parts of the i-assembly.
Attention. Do not clamp the stator in a vise or subject it to hammer blows.
Anchor check
1. Check the continuity of the circuit in pairs between segments. If the circuit is open, replace the armature with a new one.
2. Verify that there is no continuity between each segment of the commutator and the shaft. If insulation breakdowns are detected, replace the armature with a new one.
3. Check the surface of the switch. If it has roughness, process with sandpaper No. 500-600.
4. Check commutator diameter and compare with limit value (see section «Service data and specification» i'm the end of the chapter). If the value obtained is less than the maximum allowable value, replace the anchor with a new one.
5. Check the depth of the insulators between the switch segments. If it is less than 0.2 mm, it is necessary to cut the insulator to a depth of 0.5-0.8 mm.
Gear protrusion length adjustment
With the gear removed by the electromagnetic switch, press the gear in the opposite direction to eliminate play, and measure the gap «I» between the front edge and the gear stop.
If the obtained values do not correspond to the norm, adjust them by selecting the adjusting plate.