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Blade alignment

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Forum topic by scvwood27 posted 216 days ago 454 views 0 times favorited 6 replies Add to Favorites Watch
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scvwood27

53 posts in 536 days


216 days ago

Trying to align my table saw blade to the miter slots on my Delta contractor saw, but unable to. I loosened all four or my trunion bolts but unable to get the blade to shift over. I am checking the alignment with a dial calibrator. Once the bolts are loose, I am hitting the trunion with a hammer and wood block. I have seen videos in the past and it seems like a tap should so the job. I am hitting harder then a tap and still no movement. Any suggestions?
Thanks


6 replies so far

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unbob

340 posts in 488 days


#1 posted 216 days ago

On mine, first I remove the motor assembly, makes things easier.
If the four bolts are backed off, you should be able to shake the works, if not, its somehow stuck or has a twist in it. That may require loosening the rod supports to relieve the possible bind between the front and rear trunions, and the mounting holes on the tables bottom.

Once the works will shake when the bolts are loose. I found having one of the front bolts just lightly snug, the works will pivot on that one front lightly tightened bolt. Then using a C clamp at the rear of the saw “easy not too tight” should be able to pull it true, then tighten the other bolts-checking and adjusting along the way.
A good thing I did, was lock-tite studs in the table, and use nuts to hold the works to the table. It has not drifted out of true since.

If none of that works, I would flip the saw on its top, to find out why.

View Skippy906's profile

Skippy906

100 posts in 571 days


#2 posted 216 days ago

In another thread I saw, that the holes needed filed out a little bit to get the trunion bolts to move far enough to be square with the blade. I am thinking the bolts holes on the truinions was what he was referring to. It meant turning the saw over and removing the table all together for this to take place. Worth a try if you cant find out why it wont square up. (shrugs shoulders)

-- Making progress

View ajosephg's profile

ajosephg

1839 posts in 2145 days


#3 posted 216 days ago

If it won’t move at all the trunnion mounting washers may have dished/deformed into the trunnion slots. Replace them (one at a time).

If it will move, but not far enough in the desired direction, you will have to flip it on its back, take it apart and length the trunnion slots with a file.

-- Joe

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knotscott

5354 posts in 1960 days


#4 posted 216 days ago

Great suggestions above. It’s definitely more work, but tipping the saw upside down can you give a better look at what’s going on if nothing else is working. You may find damaged hardware or trunnion bracket holes that need to be elongated.

It’s even possible that the connecting rods between the trunnion brackets are slighted twisted. To check that you’ll need a flat plate wide enough to lay across the rods. A plate of glass or ceramic floor tile work well. If the plate rocks, the trunnions are twisted. Loosen the rear nuts on the rods and move the rear trunnion so the plate sits flat on the rods. Be careful not to twist the trunnion out of alignment again when retightening, but be sure they’re very snug.

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

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scvwood27

53 posts in 536 days


#5 posted 216 days ago

Thanks guys, sounds complicated. I will give it a try. I fairly new at this and would hate to really mess things up. Has anybody ever heard of a home table saw service, where somebody will come to your house to fix / service saws. I called my local Rockler and they said they did not know of any type of service.

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SCOTSMAN

5235 posts in 2170 days


#6 posted 216 days ago

If your so unsure watch some videos on youtube. There are many ,and or read some books.Whilst it is not rocket science I agree with your cautious approach your obviously a clever man and not willing to rush ahead without a complete knowledge of the workings of the saw.
I did mine as I bought a new massive sixteen inch blade saw with a sliding table around 700 killo’s .
It just fit when completely dismantled down to the last bolts throught the doorway as said in tiny but heavy pieces.Puting it all back together was not really difficult as I marked and video’d it beforehand just to check Have fun but rightly keep it safe brother. Alistair

-- excuse my typing as I have a form of parkinsons disease

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