Re: Seat actuator
Posted by HH56 On 2012/10/22 17:01:20
I've decided to play with the actuator some more. Am thinking I will go ahead and figure out a new modern replacement option -- at least for myself. The same unit is used on all V8s so would there be any reason to figure out a replacement and spend the time to document it for posterity or is the feeling these are still available and plentiful and inexpensive enough so no interest in modern.
The moving of the assembly upward mentioned earlier did the job adequately as far as motor and carpet clearance but I ran into something else unexpected today. Went to move the seat and the motor just grunted. Figured I had dropped something which had fallen into track and was binding but I was wrong. The problem turned out to be the actuator worm and tube assy was bound up.
As some of you know, there are no limit switches so the travel is full and at max power until you let off the switch. The tube and worm had been driven together into the end of worm where it attaches to mechanism. The weld or worm attachment had stuck inside the end of tube. Got it freed but it was in very tight. Without some preventive action, can easily see it happening again.
Here are the questions for today.
1) Was there some kind of cushion on the actuator worm to keep the tube down or away from the end a bit. I didn't find any broken pieces. The actuator has always slammed hard or goes until it can't drive and motor stops -- both ends so figure it is normal.
2) If a replacement, what strength would you guess is appropriate. Good ranges for a relatively easy fit are 150, 200, or 400 pounds but can go way down or way up. Unless someone knows, I have no way to measure what was original. Speed I will keep around 6/10 inch per second. Maybe a little slower than factory but adequate.
Thinking of fitting a stock unit but the company will customize one and can almost duplicate the stroke and mounting dimensions for an additional $50. That would bring the cost to around $200. Packard was 5". The stock unit stroke is 4 or 6 inches. 6 would be an issue and would have to be limited somehow to 5. 4 would lose an inch of travel but not sure that would be an issue enough to justify customizing. Comments??
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The moving of the assembly upward mentioned earlier did the job adequately as far as motor and carpet clearance but I ran into something else unexpected today. Went to move the seat and the motor just grunted. Figured I had dropped something which had fallen into track and was binding but I was wrong. The problem turned out to be the actuator worm and tube assy was bound up.
As some of you know, there are no limit switches so the travel is full and at max power until you let off the switch. The tube and worm had been driven together into the end of worm where it attaches to mechanism. The weld or worm attachment had stuck inside the end of tube. Got it freed but it was in very tight. Without some preventive action, can easily see it happening again.
Here are the questions for today.
1) Was there some kind of cushion on the actuator worm to keep the tube down or away from the end a bit. I didn't find any broken pieces. The actuator has always slammed hard or goes until it can't drive and motor stops -- both ends so figure it is normal.
2) If a replacement, what strength would you guess is appropriate. Good ranges for a relatively easy fit are 150, 200, or 400 pounds but can go way down or way up. Unless someone knows, I have no way to measure what was original. Speed I will keep around 6/10 inch per second. Maybe a little slower than factory but adequate.
Thinking of fitting a stock unit but the company will customize one and can almost duplicate the stroke and mounting dimensions for an additional $50. That would bring the cost to around $200. Packard was 5". The stock unit stroke is 4 or 6 inches. 6 would be an issue and would have to be limited somehow to 5. 4 would lose an inch of travel but not sure that would be an issue enough to justify customizing. Comments??
Attach file:
(26.06 KB)
(21.39 KB)
(22.56 KB)
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