The problem:
The threaded rod and threaded block that moves the power seat on my Expedition has issues. There is a fair amount of play that is a concern. From what I understand, the threaded rod is an 'ACME" thread (trapezoidal cut). My thought is that I can get a thread repair kit and just drill the block and install the inserts. What I do not know is how these threads work, how the kits work and what the sizes are. From what i can tell, until I get it completely apart, the outer diameter is about a 1/3 of an inch, and the inner diameter is about 1/4 of an inch. I think the rod is threaded at 13 threads per inch, but can only find a reference on the web to 12 per inch. It sucks measuring through the little slot.
If it were a finer thread, i would say helicoil. But these look special and I need a really coarse thread at a relatively small diameter.
This is also not something I know a damn thing about. Any machinists, machinery or mechanical engineers out there?
Thanks in advance.
The threaded rod and threaded block that moves the power seat on my Expedition has issues. There is a fair amount of play that is a concern. From what I understand, the threaded rod is an 'ACME" thread (trapezoidal cut). My thought is that I can get a thread repair kit and just drill the block and install the inserts. What I do not know is how these threads work, how the kits work and what the sizes are. From what i can tell, until I get it completely apart, the outer diameter is about a 1/3 of an inch, and the inner diameter is about 1/4 of an inch. I think the rod is threaded at 13 threads per inch, but can only find a reference on the web to 12 per inch. It sucks measuring through the little slot.
If it were a finer thread, i would say helicoil. But these look special and I need a really coarse thread at a relatively small diameter.
This is also not something I know a damn thing about. Any machinists, machinery or mechanical engineers out there?
Thanks in advance.
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