starter drive problems
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starter drive problems
i have a 83 f-150 xlt 4x4 300 inline 6 c6 trans ok ive replaced the flywheel and starter runs good with a rebuilt carb and a adjustable vacuum modulator valve on the trans my issue is for some reason every 2 to 3 weeks the starter drive gets chewed up everything is tight far as being bolted had to repalce the starter mounting bolts with 9/16 bolts with locking nuts i pulled in inspection plate off and watch the flywheel the runout is perfect still trying to figure this out 
any help would be awesome thanks!!
any help would be awesome thanks!!
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My starter drive wears too fast seems like every 2 to 5 weeks after a new flywheel.I replaced the starter drive last week monday and gonna have to soon again. Ive already took the stater back 3 time got new ones every time and then the last one i have is a heavy duty one.
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From: Northeast, OK
Thanks. That I can understand. By the starter drive do you mean the teeth on the starter's gear or the Bendix - the part that causes the gear to engage?
If you mean the gear, there are only a few things that cause that problem. One is the wrong starter - are you sure you are getting a starter for an auto transmission? The starters for a manual tranny are different.
Another problem is alignment. If the starter is cocked at an angle or the teeth aren't meshed at the right depth they will wear quickly. You mentioned replacing the bolts. Why?
If you mean the gear, there are only a few things that cause that problem. One is the wrong starter - are you sure you are getting a starter for an auto transmission? The starters for a manual tranny are different.
Another problem is alignment. If the starter is cocked at an angle or the teeth aren't meshed at the right depth they will wear quickly. You mentioned replacing the bolts. Why?
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yes the gear or Bendix. The threads for the factory 1/2 bolts stripped half way out.
The person who owned it before me had them bolts too tight and cross threaded and its the right stater for auto trans right gears.
Maybe drilling out the bolt holes and using bigger bolts that are snug in the starter mounting holes with locking nuts might fix this issue??
The person who owned it before me had them bolts too tight and cross threaded and its the right stater for auto trans right gears.
Maybe drilling out the bolt holes and using bigger bolts that are snug in the starter mounting holes with locking nuts might fix this issue??
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
I'm confused. The gear is the pinion gear at the end of the starter's shaft. The Bendix is the mechanism that causes the gear to be moved into engagement with the flywheel.
The gear would get chewed up by working at an angle to the flywheel or not fully engaging. The Bendix rarely wears out quickly, but might do so if the gear isn't releasing from the flywheel and causing things to run way too long. And that would be caused by the starter being too close to the centerline of the engine, which would mean the gear on the starter would be very tight against the flywheel.
So, if the bolts you are using are allowing the starter to rotate or move because they are too small, then that may be the problem.
The gear would get chewed up by working at an angle to the flywheel or not fully engaging. The Bendix rarely wears out quickly, but might do so if the gear isn't releasing from the flywheel and causing things to run way too long. And that would be caused by the starter being too close to the centerline of the engine, which would mean the gear on the starter would be very tight against the flywheel.
So, if the bolts you are using are allowing the starter to rotate or move because they are too small, then that may be the problem.
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