M66 stuck ring turret

319cssb

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Easley SC
How can I get the ring turret to move more freely? Brake is off. What are the two Allen bolts on the top for?
9CAAB778-4F27-473E-9430-DA902366D4AF.jpeg
 

CallMeColt

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I take it you have this in a FMTV from the picture?

Did it move free before you mounted it or was it on there when you got the truck? Is the gasket on there?

I installed one on my truck and found a few things that made it snag;
 

319cssb

Active member
979
185
43
Location
Easley SC
I take it you have this in a FMTV from the picture?

Did it move free before you mounted it or was it on there when you got the truck? Is the gasket on there?

I installed one on my truck and found a few things that made it snag;
Mine was entirely stuck when I got it. I used a forklift to install mine. So it was slightly less sketchy than your installation.
It freed up a bit when I took the ring cover off , which is held by a bunch of Phillips head screws. I used a small plastic bottle with CLP in it and worked the ring back and forth. Wherever it moved easily and slowly worked it into areas where it would stick. With a good amount of CLP it moves slightly easier now.
Would be good to see an exploded diagram of an m66 or a video of a restoration.
I am using the original canvas which I have sprayed with a water repellant. But the truck is inside anyway.
 
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CallMeColt

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Location
Wilson County, Texas
Mine was entirely stuck when I got it. It freed up a bit when I took the ring cover off , which is held by a bunch of Phillips head screws. I used a small plastic bottle with CLP in it and worked the ring back and forth. Wherever it moved easily and slowly worked it into areas where it would stick. With a good amount of CLP it moves slightly easier now.
Would be good to see an exploded diagram of an m66 or a video of a restoration.
I am using the original canvas which I have sprayed with a water repellant. But the truck is inside anyway.
Mine was very smooth and just had one small snag spot after install that was due to a bend in the cab that bad the gasket bulge and rub on some of the hardware. I pointed it out in the video. Only other issue is I'd like the brake handle to hold a bit better.
 

319cssb

Active member
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Location
Easley SC
Mine was very smooth and just had one small snag spot after install that was due to a bend in the cab that bad the gasket bulge and rub on some of the hardware. I pointed it out in the video. Only other issue is I'd like the brake handle to hold a bit better.
As I said , mine was totally seized. The brake handle stuck. With a lot of twisting left and right, it freed up a bit. There is a ring around the m66 . It has two hinge and a long Phillips head screw to tighten and loosen . Under that ring is a felt strip. I think it lubricates the roller bearing. But I’m not certain about that.
 

CallMeColt

Well-known member
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Location
Wilson County, Texas
As I said , mine was totally seized. The brake handle stuck. With a lot of twisting left and right, it freed up a bit. There is a ring around the m66 . It has two hinge and a long Phillips head screw to tighten and loosen . Under that ring is a felt strip. I think it lubricates the roller bearing. But I’m not certain about that.
If I recall, to really get it lubricated properly, you need to remove it from the truck and flip it, then take it apart. Somewhere on this forum I read that is how someone got theirs freed up good.
 
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319cssb

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Easley SC
If I recall, to really get it lubricated properly, you need to remove it from the truck and flip it, then take it apart. Somewhere on this forum I read that is how someone got theirs freed up good. I have the TM that has the M66 in it, I have attached it.
Yeah removing from the truck and flipping upside down is not going to happen. My installation is not as bad as yours. I chased all the bolts with a tap. Only one had issues. But I definitely won’t take the ring off again
 
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