To see how an electric motor works have a look here. Inside the main casing you'll see four field coils. You can now pull out the armature assembly away from the outer casing. You'll also find a rubber cover and a plate here. I do like these castings! These Bosch starter motors are very well made â€“ which is why it is a shame to junk them. You can now withdraw the mechanism that engages with the flywheel (the drive assembly) away from the nice aluminum alloy casting which also holds the solenoid. You might be able to pull it off â€“ if not carefully persuade it with a screw driver blade (eeek be careful) â€“ better still tap it with a rubber hammer! Once you've got the actuating arm locating bolt out and the end cap off you can loosen the main outer sleeve. This actuating arm is the bit that gets pushed by the solenoid and engages the starter motor driving cog into the flywheel.

When you've got the cap off you will be able to see the commutator and the four brushes.Īt the other end of the starter motor remove the nut and bolt that holds the actuating arm in place. The main casing is steel and the cap is a nicely cast piece of aluminum alloy. and if the cap is stubborn to remove use a puller.ĭon't be tempted to pry this bit off. Next undo the bolts that hold on the end cap. and a C clip that is used with several shims to set the axial end play of the armature axle shaft. Inside you'll find a rubber sealing ring. Remove the end cap that covers the end of armature axle. Remove the wiring between the motor and the solenoid. Step one - take the starter motor off of your car â€“ on a non-turbo engine just unbolt it and take it off â€“ with a turbo have look through the wiki:-Īfter removing the starter motor from the engine give it a wipe and start undoing the bits at the end. I think it is worth while taking these things apart and assessing what needs to be done before junking them.īefore starting on a bit of a clean up of my starter motor I found some good information on : In particular this pdf file. If you haven't seen the insides before take a quick look through the photographs I've posted â€“ I bet you'll be surprised how simple they are. Most fixing starter threads posted on this forum go through the process of removing a starter and then replacing it with another one â€“ why? I don't know! Check out your old one first.

So it attracts the attention of the investigators to work on the performance prediction and design of these motors.

The induction motor with an axial air gap shows some performance characteristics that are superior to conventional induction machines.

Axial starter motor pdf