Delta 40-694 Table Moves When Locked

[silentsoundguy]

The movement is in the front. As suggested, I have removed the table from the trunnion to demonstrate this. Here is a video I made last night. This happens when the zero pointer/ball is installed and it happens when it is removed.

Delta has sent a replacement trunnion. They think it's either that or the cast base.

 

Edited May 21, 2018 by silentsoundguy

[OCtoolguy]

2 hours ago, silentsoundguy said:

The movement is in the front. As suggested, I have removed the table from the trunnion to demonstrate this. Here is a video I made last night. This happens when the zero pointer/ball is installed and it happens when it is removed.

Delta has sent a replacement trunnion. They think it's either that or the cast base.

 

Well, you have narrowed it down to one of too offenders. Or both.Obviously the trunnion and the cast base are not coming together as they should. It would have been nice if Delta would have just sent out both pieces so you wouldn't have to be messing around experimenting any further. Keep us updated on what you finally have to do to remedy the situation.

 

[Rockytime]

Did you buy it new from a dealer? Can you return it or exchange it?

[silentsoundguy]

If the trunnion doesn't work, I'll probably just return it. The trunnion is an easy swap, not so much with the other part.

I purchased from Amazon. 30 day to return it.

[OCtoolguy]

Just for the fun of it, try loosening the locking knob enough that you can "pull" the table toward you about a 1/4". Then stick a wood shim in behind the trunnion so it's between the trunnion and the base casting. Then try tightening the knob again. See if that allows you to "lock" the table down. 

 

 

[Rockytime]

I think returning is a no brainer.

[rjweb]

Amazon is good about returning, I agree I would have sent it back last week for a replacement, RJ 

[silentsoundguy]

I have no problem returning items to Amazon. I might be their best customer However, the box was a bit mangled. I can order another and send this one back in the new box. We shall see. I do want to scroll, but I can be patient.

[Rockytime]

I'd really like to see you happy with a saw whichever you do. I know how anxious I would get. I'm not too patient.Wishing you the best.

[silentsoundguy]

I've been making some pens on the lathe lately. I'm not missing any shop time.

[silentsoundguy]

So the trunnion replacement came last week. I installed it and the problem persisted. My Amazon return window was closing so I sent it back to them and ordered another one. The new saw arrived the day after I sent back the old one. I put it together - SAME PROBLEM WITH THIS ONE! I emailed Delta and they said their only solutions are to take it to a repair shop or return the saw. I'm bummed. This is my price point and I can't make it work. Grr.

[OCtoolguy]

I hate to say it but I think you may be chasing a problem that is not really a problem. Have you tried using the saw? Does it truly effect the cut? Just asking..........please don't take it the wrong way. 

 

[silentsoundguy]

That's ok. I do understand. It does take some force to move the table. But holding down the workpiece is enough to move it. This isn't exactly an entry level tool where I would expect to see something like this.

[orangeman]

The trunion has some play when tightening the two screws. Make sure they are aligned correctly and not skewed.

I just assembled my Delta and it runs smooth.

Also, the washer thingy has a little protrusion that must go into the knob. Then tighten down by hand. No extra pressure required.

bb

 

[JTTHECLOCKMAN]

This was another problem back with the early Dewalts. I am trying to remember the fix but I think if you check Rick Hutchenson's site he has it listed. Again all these type saws are clones so the fix for one should apply to all. 

[ScollSaw Slasher]

If one removes the handle, one can feel the play between the bolt head and the inset where it supposedly locks in. Short of epoxy to cement that bolt in, I can see no way to get rid of that play totally.

[silentsoundguy]

19 hours ago, orangeman said:

The trunion has some play when tightening the two screws. Make sure they are aligned correctly and not skewed.

I just assembled my Delta and it runs smooth.

Also, the washer thingy has a little protrusion that must go into the knob. Then tighten down by hand. No extra pressure required.

bb

 

Thanks, orangeman

This play happens even when the table is removed from the equation. With just the trunnion attached to the base it will move a tad when tightened. I was wondering about the "washer thingy" I have tried it with the protrusion inside the trunnion and with it inside the knob but the result is the same.

[silentsoundguy]

17 hours ago, JTTHECLOCKMAN said:

This was another problem back with the early Dewalts. I am trying to remember the fix but I think if you check Rick Hutchenson's site he has it listed. Again all these type saws are clones so the fix for one should apply to all. 

I would love to see that article, but I can't seem to find it.

[JackM]

Just wondering if you tried changing the "O" ring I mentioned a while back.

Had the similar problem that drove me crazy when trying to make precision 3D cuts. 

It worked for me.

Jack

[silentsoundguy]

3 minutes ago, JackM said:

Just wondering if you tried changing the "O" ring I mentioned a while back.

Had the similar problem that drove me crazy when trying to make precision 3D cuts. 

It worked for me.

Jack

Thanks, Jack. I didn't try that because the play isn't in the back, it's at the trunnion in the front.

[JTTHECLOCKMAN]

6 hours ago, silentsoundguy said:

I would love to see that article, but I can't seem to find it.

I will try to find it. It has been a long time since that topic came up but I do remember it being a problem. 

[Arkaye]

I found this topic while searching for the same problem that I am having with my brand new Delta 40-694 scroll saw.  My table has play in it exactly like in the video posted by Silentsoundguy.  Let me add what I have found and maybe someone has a solution.  With the trunion removed from the table (the issue is the same with or without the table attached), and the knob loose, the curved part of the trunion matches perfectly with the curved part of the base that it rests on.  However, when I tighten the knob, the trunion raises up and creates a gap between the two curved pieces.  The trunion will then pivot on the tightened bolt.  Push down on the left and the gap closes on that side and opens wider on the right side, and the opposite when the right side is pushed down.   It is as if the hole drilled in the base for the bolt was drilled too high, and when the knob is tightened, it lifts the whole trunion, creating the gap and allowing it to rock left and right.  Does that make sense?

Lowering the bolt hole is not an option for a number of reasons.  Any suggestions?

[jerry1939]

Depending on the thickness of the gap between the base & trunnion, could you cut plastic strip(s) for shims to fill the gap?  The "Zero degree" trunnion hole is off on mine.  I put washers on one side of the trunnion/table to cure that.  Use a home made protractor that I posted on this site few years ago.  Will see if I can find it.

jerry

[jerry1939]

The site won't let me copy & paste.  To see how I set degrees, click on my picture.  In the search bar, enter "Protractor".  A few lines down you will see the subject "Protractor for you".  Click the pdf file.

jerry

[neal560sl]

I recently purchased a Delta 40-694 just before Christmas and when putting it together ran into this same issue.  I cured mine by pushing down on the table as you tighten the locking knob and no more movement.  I'm assuming that if I loosen the locking knob and try to retighten without pushing down again, the rocking will be back again also.  I hardly ever do any angled cutting so it hasn't been an issue for me.