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Help! Trying to align Jet contractor saw

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Forum topic by eldercop posted 11-20-2014 02:34 PM 802 views 1 time favorited 8 replies Add to Favorites Watch
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eldercop

58 posts in 968 days


11-20-2014 02:34 PM

Finally have progressed to not always blaming myself for little inaccuracies and starting looking at the machines. My Jet has 30 thou difference between blade and miter slot- widening toward the motor. Spent yesterday attempting to loosen, tap and tighten the trunnion. Got about 15 thou out…until I tightened it and it was back again. Jet tech support wants to be helpful, I think, but each guy I talk to has a different procedure, including loosening the tie rod nuts to make sure the rods are level with each other using a plate of glass and looking for wobbled, fixed it, but still can’t get the blade to square up. I’d really like a step by step procedure from someone who has gotten 5 thou or better in aligning blades with miter slots on a Jet contractor. Many many thanks in advance.

-- "Experience is what you get the day after you needed it" Mark Twain


8 replies so far

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David_H

90 posts in 777 days


#1 posted 11-20-2014 02:49 PM

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eldercop

58 posts in 968 days


#2 posted 11-20-2014 03:24 PM

An idea for sure, but its the misalignment coming back while trying to tighten up the correction that’s bothersome. Checked the video and PALS is sure convenient, but I don’t mind reaching into the guts to straighten things out.Just want it to work.

-- "Experience is what you get the day after you needed it" Mark Twain

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David_H

90 posts in 777 days


#3 posted 11-20-2014 04:01 PM

That’s where the Pals help, they stay on permanently and keep the trunnion from moving.

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pwk5017

51 posts in 785 days


#4 posted 11-20-2014 04:35 PM

Yep, PALS are worth the $15 or $20 easily. I hated aligning my new to me delta contractor saw. It’s a dream to use now. I think I had it absolutely perfect before tightening, and then tightening the PALs in an alternating pattern knocked me off a few. Still, I am less than 5 thous and the saw performs extremely well. Spend the money, do it right once, then forget about it for a year.

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drzaius

11 posts in 743 days


#5 posted 11-20-2014 06:51 PM

I feel your pain. I got a Jet contractor saw about 15 years ago & getting it properly set up was a chore. But I have it dead on & I haven’t had to readjust a thing in all those years, so it’s definitely worth doing right. The PALS look really good, wish I’d had them.

Besides getting the trunnion brackets lined up side to side, you must be extremely careful to keep them parallel & snug. There is enough slop between the mounting bolts & holes that the trunnion can end up too tight or with too much play. The PALS would at least help to minimize 1 of the variables. It is a horribly hateful design, but it is what it is & just about ever manufacturer uses it.

It also helps to tighten the mounting bolts fairly snug & then adjust the brackets by tapping with a mallet. Then when you torque down the bolts its less likely that things will shift.

It’s easy enough to get one of these pretty close, but that just isn’t good enough if you really want to enjoy using your machine.

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eldercop

58 posts in 968 days


#6 posted 11-20-2014 08:42 PM

Thanks for the response, I think there is hope. Gonna level tie rods, jigger the trunions and futz with it until the PALS get here. got 19 kitchen cabinets to do face frames for and with QSWO looking for all the goofs to be mine.

-- "Experience is what you get the day after you needed it" Mark Twain

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eldercop

58 posts in 968 days


#7 posted 11-21-2014 02:23 PM

Update: Success! Put it all back together, leveled the tie rods with the plate of glass for no wobble. Tightened the front trunnion full and the rears with a wee bit of slack, then whammed it with a 3 lb mason hammer- tightened the rear nuts about an 1/8 turn alternating sides; held my breath and measured- 2 thou. After reading an old FWW review of tablesaws that puts my 15 y/o Jet contractor in the land of Powermatic and Sawstop. I’ll take it, and order the PALS. The downside is making new jigs that relied on the old blade/slot clearance. Now the jointer is saying “me next, me next”
Thanks for the encouragement and the PALS suggestion guys.

“Experience is what you get the day after you needed it” Mark Twain

-- "Experience is what you get the day after you needed it" Mark Twain

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drzaius

11 posts in 743 days


#8 posted 11-21-2014 03:02 PM

That’s great. It’s a pleasure to work with finely tuned tools. If it’s good now then you probably don’t need the PALS. I clean, lube & check all the alignment etc about once a year & have never had to adjust anything to do with the blade alignment.

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