Ignition Coil: Service and Repair

Ignition Coil with Power Output Stage

Special tools, testers and auxiliary items required

• Ignition Coil Puller (T40039)

Removing

• Follow all safety precautions. Refer to => [ Safety Precautions ] Ignition/Glow Plug System.

• Ignition components overview. Refer to => [ Ignition Components Overview ] Service and Repair.

• To pull out the spark plugs, place the ignition coil puller (T40039) on the topmost thick rib - arrow - of the ignition coil with power output stage.






• The lower ribs may be damaged if they are used.

- Release the connectors and pull all connectors simultaneously off from the ignition coils.






- Remove all ignition coils from the spark plugs using the ignition coil puller (T40039).






Installing

• The ignition coil with power output stage must be greased using lubricating paste (G 052 141 A2) to install new spark plugs. This prevents the sealing hose on the ignition coil from sticking on the spark plug. The lubricating paste must spread onto the spark pug when installing the ignition coil.

• New ignition coils with power output stages are already greased when delivered.

- Apply a thin bead of lubricating paste (G 052 141 A2) around the ignition sealing hose - arrow -. The bead must be 1 to 2 mm thick.






- Insert the ignition coils loosely onto the spark plug shaft.

- Align the ignition coils to the connectors and then connect all of the connectors simultaneously onto the ignition coils.






- Press the ignition coils evenly onto the spark plugs by hand.