- screwdriver
- a pointed instrument like an awl
- beard
- hammer
Remove the spark timing sensor from the vehicle (see subsection 8.4.3.).
1. Carefully, without using any sharp metal tool, remove the rubber sealing ring from the outer groove of the spark timing sensor housing.
2. Remove the sensor cover by unscrewing the two screws that secure it.
3. Use an awl to remove the vacuum regulator rod spring retainer.
4. Remove the two screws securing the vacuum regulator and...
5....after disconnecting its rod from the sensor support plate pin, remove the regulator.
6. Remove the screw securing the Hall sensor wiring harness connector block and...
7....slide the block upwards and remove it from the spark timing sensor housing.
8. Remove the two screws securing the front bearing roller holder and...
9....remove the holder together with the Hall sensor and the support plate.
10. Remove the two screws securing the Hall sensor to the support plate and...
11....remove the sensor from it.
12. Remove the two screws securing the support plate to the front bearing holder and...
13....remove these screws, being careful not to lose the locking plates located underneath them.
14. Insert two flat-head screwdrivers into the gap between the support plate and the front roller bearing holder and use them to pry the support plate out of the bearing seat...
15....together with the bearing.
16. Using a pointed tool (an awl), pry up and remove the free end of the coil spring from the groove of the coupling and...
17....remove the spring.
18. Using light hammer blows through a punch of a suitable size, knock the locking pin out of the holes in the coupling and shaft.
19. Remove the pin through one of the grooves in the end face of the spark timing sensor housing and...
20....remove the coupling from the shaft.
21. Remove the set of spacers from the roller and...
22....a shaped thrust washer.
23. Remove the shaft with the centrifugal regulator and washers from the spark timing sensor housing.
24. Remove the textolite antifriction washers 1, steel adjusting washers 2 (thin) and thrust washers 3 (thick) from the shaft shank.
25. Inspect the removed spark timing sensor housing sealing ring. Replace a severely deformed or torn ring.
26. Check the removed vacuum regulator by pressing its rod into the housing until it stops...
27....close the vacuum nipple tightly with your finger and release the rod. The rod should remain in the recessed position, and when the nipple is opened, it should move out sharply. If the rod does not stay in the recessed position or does not move out clearly, the regulator is faulty, replace it.
28. Carefully inspect the bearing of the support plate and check for grease and ease of rotation. If necessary, wash the bearing with gasoline and put fresh grease in the spaces between the balls.
29. If the bearing is seizing or has axial and radial play, replace the support plate and holder assembly with the bearing.
30. Check the ease of movement of the centrifugal regulator weights and the regulator itself on the shaft. If parts are jammed, wash the unit with gasoline or kerosene and lubricate the moving joints with consistent grease. Check the reliability of the Hall sensor screen fastening on the shaft. Even if there is minor play in the connection, replace the shaft together with the screen.
31. To remove the screen, use a screwdriver to remove the lock washer...
32....a spacer washer (if it is installed)...
33....use a pointed tool to pry the ends of the springs from the regulator base holders (the small spring is hooked onto the holder marked with paint; if the springs are installed incorrectly, the regulator setting will change) and...
34....remove the screen from the roller.
35. Remove the springs from the screen pins. Note that the large spring is hooked onto the longer pin.
36. Assemble the spark timing sensor in the reverse order of disassembly, lubricating all rubbing surfaces with a thin layer of consistent grease (no more than 0.35 mm) ensure the selection of adjusting washers 2, installed between the thrust 1 and antifriction 3 washers.