Genuine Audi Distributor

Audi Distributor Parts and Q&A

• Distributor Assembly
  034-905-237-AX
  Q: How to remove and refit the distributor on Audi 100?

  A:

  To eliminate the distributor of the AAA, ABK, and AAD engines, place it on the left-hand rear, and driven at the top of the oil pump shaft. Enable the engine to TDC on cylinder No 1, disconnect the ignition coil HT lead and find and disconnect spark plug HT leads. Disconnect the Hall sensor cable with the distributor body and then unscrew or unclip to pull off the distributor cap, and make sure that the rotor arm electrode fits into the cylinder No 1 marking. Identify the connection between the distributor body and the cylinder block, dismantle the bolt, take off the clamp, and pull off the distributor with O-ring being reclaimed. In the case of ACE and AAR engines, the location of the distributor is upon the right-hand side of the rear and is driven off the back of the camshaft, and a similar procedure should be followed in need of aligning the engine to TDC, disconnecting HT leads, disconnecting the Hall sensor cable, and disconnecting the distributor cap. Indicate the connection between the distributor body and the cylinder head, unscrew the mountings and pull out the distributor and reclaim the O-ring seal. Check the O-ring seal and the distributor drive gear, wear or damaged parts should be replaced. To refit, make sure that the engine is at TDC on cylinder No 1, position the oil pump shaft drive dog correctly in AAE, ABK or AAD engines, install a new O-ring, install the distributor, and install the clamp and bolt loosely and aligning marks made when removed. String the distributor clamp bolt, re-assemble distributor cap, re-assemble Hall sensor cable and re-assemble the spark plug HT leads and main HT lead leads to the ignition coil. In the case of ACE and AAR engines, you are to replace the O-ring seal and clean the cylinder head surface, find the distributor, attach the shaft dog, match marks, and screw mount. Re-fit the distributor cap and reconnect the HT leads and Hall sensor cable and have the ignition timing checked and adjusted accordingly.
• Distributor Assembly
  034-905-237-X
  Q: How to properly remove and reinstall the distributor while ensuring the engine is at TDC compression on No 1 cylinder on Audi 80?

  A:

  Prior to the distributor being removed, locate the engine at TDC compression with No 1 cylinder, by removing the spark plugs and rotating the engine clockwise by using a spanner on the crankshaft pulley bolt until compression is detected in the engine. Turn until the TDC marks are on the crankshaft pulley and lower timing cover and the corresponding mark on the flywheel is in line with the corresponding mark on the transmission housing (20-valve engine). To further check it the upper timing cover may be opened to position the TDC mark on the camshaft sprocket in line with the pointer on the 20-valve engine or the upper edge of a cylinder head on other engines. Properly identify the distributor body and engine block or cylinder head relative to the other with a scribber or pin punch, and remove the vacuum pipe attached to the vacuum capsule on the distributor, where applicable. To change the connection, squeeze the spring clip in order to unhook the wiring plug, peel off the interference screen, where fitted, and lift the cap off the distributor by pushing open the clips. Test to see whether there is a mark on the upper rim of the distributor body at the center of the rotor arm; otherwise, mark with a pencil. A special tool can be employed to align the rotor arm on the 20-valve engine, or a tool can be made out of card, or a former distributor cap. Unscrew the clamp bolt or nut to take off the clamp, and then take out the distributor out of the block or head. In the case of the distributor, check the condition of the rubber O-ring on the bottom and replace it where required, and the gasket in the distributor where present. Make sure that the crankshaft is at the TDC point and position the rotor arm a little clockwise of TDC and align the distributor with the aperture with the block or head made marks. Slide the distributor into place with the rotor arm positioned anti-clockwise back to its starting position as the drive gears slide in place. In case the distributor does not fully fit in the four cylinder engine, withdraw that distributor and apply a screwdriver to turn the oil pump driveshaft a bit more, before attempting to fit. Once the alignment of the marks has been established, attach clamp and fasten bolt or nut, replace the distributor cap, wiring plug and vaccum pipe, and timing cover (unless removed). Lastly, verify or correct check the ignition time where needed.