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Help with SME 309 arm lift. Will not lower or rise.

Was trying to adjust the the height of the SME 309 arm lift; it was to high. I doing so I messed something up. The lift will not rise or lower now. I used a .9mm Allen wrench and  inserted it into the proper hole and either through something serious off or damaged it. I can’t get it to rise and lower properly now. It actually rises a bit when it’s in the down position now. 
hiendmmoe
yogiboy's avatar
yogiboy
5,703 posts
 
Did you use the .89 mm A/F Hexagon wrench that comes with the 309?
hiendmmoe OP
203 posts
 
I used a .9 mm Hexagon wrench I had to purchase. It seemed work fine. .89 mm wrench would basically be a .9mm wrench
petg60
1,486 posts
 
Try to do the procedure again till the screw unlocks, at the same time press lightly with your finger the lift or play slightly with the cue lever and see what happens.
mijostyn's avatar
mijostyn
8,570 posts
 
Under the set screw there should be a nylon plug. It will not damage the metal can of the lift and gives a smooth motion. If you tighten down on it to hard you squash the plug and jam it in the hole. Back the grub screw out and wiggle the lift front to back to see if you can loosen the plug.
mijostyn's avatar
mijostyn
8,570 posts
 
Grub screw is another term for set screw.
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