Gerry Goldberg's A2 Repair Journal
by Michael McWilliams
April 26, 2005
The stator returned back from the HCD cleaned and repaired. Originally I thought I could repair the broken connection, but I decided to have the club do an official repair.
The stator has four brushes that are critical to the operation of the Heinkel. The brushes are integral to battery charging and starting of the Heinkel. The brushes must not be worn down and must be free within their housing. The brushes have a spring which keeps them in contact with the flywheel. The brushes must not have resistance or get stuckwhen you push on them. If they have any resistance, I remove them from their base and file the edges down slightly.
The stator is held in place by three 5mm allen screws. The screw holes dictate how the stator is held in - in other words, you can't install it incorrectly. I use a little Loctite threadlocking adhesive to help keep the screws from becoming loose.
The most difficult part of this task is to get the wiring harness mounted properly. The harness has two rubber "plugs" that must fit into the engine housing. I use a little grease to help them slide into place.
Next, installation of the flywheel. No tricks here, follow the directions in the manual. Typically I add Top Dead Center (TDC) marks to the flywheel and engine case just to know where it is after I install the piston, cylinder and head.
Heinkels use a set of springed weights to change engine timing once the engine is running. This unit mounts to the flywheel. The screw holes in this unit allow it to be mounted in one way so there is no way to do this incorrectly. I added a little grease to the moveable parts and installed the unit.
Next, installing the flywheel cover and attempting to prevent leaks.