Warning: The distributor rotor on some 20 valve engines is fixed to the shaft and if damaged the complete distributor will need to be replaced. Do not attempt to remove the distributor rotors on these engines.
1. Wipe the outside surface of the distributor.
2. Remove the distributor rotor from the drive shaft, then lift the dust cap. Make sure that the cover retaining bracket does not contaminate the Hall rotor.
3. Mark the position of the Hall rotor relative to the drive shaft, then remove the retaining ring, take out the rotor together with the mounting pin.
4. Remove the flat and spring washers, noting their installation positions.
5. Where is it used?; remove the screws, take out the vacuum chamber.
6. Remove the retaining ring and washer from the backing plate and remove the screws securing the socket to the distributor side. Remove the magnetic pickup and socket.
7. Remove the side screws, lift the support plate and thrust washer. Also remove the spring clips.
8. Clean all parts and check their condition.
9. Inspect the inside of the distributor cover for signs of burning or wear. Make sure the carbon brush in the center of the cover is in good condition and moves freely against the spring tension.
10. Check that the distributor rotor is not damaged. Use an ohmmeter to measure the resistance between the copper contact in the center of the distributor rotor and the copper contact at the edge of the rotor. The resistance should be 600-1400 ohms.
11. Where fitted, apply vacuum to the pipe connection to the vacuum diaphragm and check that the diaphragm block return rod moves. Secure the diaphragm with vacuum and check that it is not leaking.
12. Assemble the distributor in the reverse order of disassembly, lubricate the working surface of the bearing plate. Finally, quickly rotate the drive shaft and check that the Hall rotor is not jammed or bent.
The original article is located on the online resource audimanual.ru