Quote:
Originally Posted by ah-kay
My bad. The solenoid pulls in. When the solenoid pulls in, the lever attached to it 'extends' the bendix/ring gear. Check step (1). A lot of the times, the pull action is not working is because the starter motor is faulty, not the pull solenoid. The carbon brushes are not touching the armature well to make the pull circuit. I think your problem is the starter motor carbon brushes, solenoid rarely go wrong.
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I also have my Starter apart and your answer answers a question that I had.
On mine it seemed like the Solenoid was function intermittently and the last time I had to get a piece of wood and put that on the Starter and hammer to get it back work. After which I parked it and took the Starter off.
When I got in I found that not only were the Brushes worn but one for sure was stuck and there may have been others stuck. (Why the wood and hammering worked.)
Like the OP I bought another Solenoid along with the Brushes but had bee wondering if it was simply an issue of the Brushes which is what your question answers is that yes it could have been the Brushes causing the whole problem.
Since I bought it I am going to use the new Solenoid. However, just like the OP the numbers are different.
What I did was look for the Solenoid with the Mercedes Part Number then compared that to the Bosch Number. The one for the Mercedes Part Number is what I ordered.
In the instructions with the new Solenoid it tells you if you can use the old Plunger and spring with the New Solenoid and there was a change in them.