Delta 34-670 Tablesaw Hard to Raise: Is It Caused by Missing Pieces?

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Forum topic by Pete_LJ posted 05-11-2016 04:05 PM 2227 views 0 times favorited 1 reply Add to Favorites Watch
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112 posts in 1305 days

05-11-2016 04:05 PM

Topic tags/keywords: delta tablesaw table saw hard raising hard adjust height adjust 34-670 34670 trapezoidal

Hi all. I am a first time poster.

I am a hobbyist who has an issue with my Delta 34-670 tablesaw being difficult to raise the blade. Previously, I took the saw off the stand and cleaned out the trapeziodal threads (I believe that is what acme threads are called when they are metric) on the raising and tilt mechanism. I got all the accumulated gunk and rust out of the threads and then lubricated them with graphite powder. This made a substantial improvement in the lowering of the blade but the raising is still pretty tough.

As a result, I observed the nut and trapeziodal shaft movement as I turned the raising handle while the saw was turned upside down. What I found was that the nut on the trapezoidal shaft was connected by one (“1”) metal link. This one (“1”) metal link was attached by a roll pin to the nut (and, I believe, on the other end to the trunnion). As I was testing the blade raising, what I found was that as I attempted to raise the blade that the raising would go smoothly initially from the bottom of the range. However after a couple turns, the the nut and link would shift about ninety (“90”) degrees so that the flat of the link went from vertical to horizontal. When the link shifted that is when the blade raising became difficult. I tried to use some safety wire to prevent this shifting of the nut and link but this was not successful. At that time it appeared that the saw had been manufactured with only one (“1”) link.

Today, I was reviewing the 34-670 parts explosion when I noticed that the parts explosion lists two (“2”) links (rather than only one (“1”) in my situation). A missing part seemed to me a logical explanation for the swiveling of the nut and link causing the hard raising. See attached parts explosion and picture of the nut.

Has anyone else experienced the same problem?

Does anyone else have a 34-670 with only one (“1”) link?

How have others fixed this problem?

Is it really as simple as a missing part?

PS I apologize in advance if this issue has already been addressed.

PPS You can also find parts explosion at With the following parts designated as follows: #166 (nut), #168 (link) and #171 (pin).

1 reply so far

View MrUnix's profile


7530 posts in 2759 days

#1 posted 05-11-2016 04:16 PM

Seems like you have already identified the problem… parts diagram shows two, and the picture in the manual shows two… so now you just need to fix it.


-- Brad in FL - In Dog I trust... everything else is questionable

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