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Please Help! Blade Height Won't Lock...

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Forum topic by SawTamer posted 08-08-2010 11:01 PM 2595 views 0 times favorited 12 replies Add to Favorites Watch
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SawTamer

9 posts in 2376 days


08-08-2010 11:01 PM

Topic tags/keywords: table saw blade height locking mechanism grizzly g1022 1022 cutting depth accuracy question tablesaw

Hi All,

I’m hoping somebody with a Grizzly 1022 contractor saw can help me understand how the blade height locking mechanism is supposed to work. I’ve gone through the mechanism and made sure all the collars are tight and everything seems to be in order. However, when I set the blade height and tighten the height adjusting wheel’s locking knob, each successive dado cut comes in at a different depth. This is frustrating as all get out as you can imagine. I haven’t been able to figure out why this is happening, and I suspect it may be that I don’t fully understand how the mechanism is supposed to work.

Any insights you can offer would be greatly appreciated!

Cheers!
Lance


12 replies so far

View Vern Little's profile

Vern Little

103 posts in 3000 days


#1 posted 08-08-2010 11:34 PM

Lance, is there a knob on the inside of the wheel which adjusts the blade height? This knob needs to be kept tight or the blade will work itself lower.

-- Earth first, we'll drill the rest of the planets later. Vern

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BobG

172 posts in 2424 days


#2 posted 08-09-2010 03:59 PM

I know it maybe an obvious thought but, are you raising the dado blade UP to the proper height, or lowering. IF you are lowering it, they usually have a tendency to drift down some more. No matter how tight you make the locking knob. Probably redundant but, I have done this myself in the early years of using a table saw.

-- BobG, Lowell, Arkansas--------My goal in life is to be the kind of person my dog thinks I am! Make more saw dust!!

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SawTamer

9 posts in 2376 days


#3 posted 08-09-2010 04:08 PM

Thanks for input on this. I checked the handle and there is not a seperate knob inside the handle. It’s one molded piece. I am also making sure that I raise the dato to height. In fact, it’s so loose now that just turning on the saw is raising the blade height significantly (about .125”). Very frustrating…

Lance

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knotscott

7210 posts in 2838 days


#4 posted 08-09-2010 06:06 PM

IIRC, the G1022 lacked a locking knob….a fairly significant drawback. You may need to resort to rigging some sort of clamp to the wheel.

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

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Gregn

1642 posts in 2446 days


#5 posted 08-09-2010 09:18 PM

Have you tried cleaning and checking your blade height trunnion and worm gears. Also be sure to check the set screws for the worm gears to be sure they aren’t slipping. Then lubricate them with grease.

-- I don't make mistakes, I have great learning lessons, Greg

View swdst's profile

swdst

44 posts in 554 days


#6 posted 06-04-2015 11:31 PM

I have the g1022pro, and have the sane problem, mine has a wheel for adjusting, and a star knob in the middle, but the star knob only seems to hold the wheel to the shaft, and does nothing to lock the wheel

View patron's profile

patron

13535 posts in 2804 days


#7 posted 06-04-2015 11:43 PM

i have made a dedicated wedge
to go behind the adjustment wheel
raise the blade where you want it
and tap the wedge in between the saw body
and the adjustment wheel

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

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MrUnix

4221 posts in 1662 days


#8 posted 06-05-2015 12:06 AM

From a quick glance at the parts diagram for that saw, it looks like that lock knob provides a friction lock against the pointer assembly… so, after time, that friction surface has probably worn and is slipping, or it’s been worn down enough that the lock knob is running out of threads and can’t be tightened any further. I’d be willing to bet that a fiber washer or something similar would fix the problem..
Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View Ghidrah's profile

Ghidrah

667 posts in 685 days


#9 posted 06-05-2015 01:49 AM

My Delta cab saw, (36-953) has a similar problem, while the blade doesn’t rise or lower, (while in operation) the locking knob doesn’t lock the blade in place no matter how hard you tighten it, the wheel can be rotated with little effort. I also tried the miter locking knob, (same knob) locks the miter down solid without excess torque, doesn’t do a thing for the for the elevator.

Whatever the problem is it is deep within the shaft, there’s no obvious rounding or flattening of the knobs tapered tip. Because the locking knob is tapered, I’m not willing to slide something into it to see if it is a length problem.

I gotta stop typing this, I’m getting excited.

-- I meant to do that!

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MrUnix

4221 posts in 1662 days


#10 posted 06-05-2015 03:26 AM

My Delta cab saw, (36-953) has a similar problem [...] the locking knob doesn’t lock the blade in place no matter how hard you tighten it, the wheel can be rotated with little effort.

- Ghidrah

Common problem on Unisaws… the pot metal pointer bracket will wear a groove from the lock pins if you try adjusting the height with the wheel locked. Won’t do it overnight, but over time and continued abuse, it will become deep enough that the lock pins no longer engage. Pretty simple fix – just replace the pointer bracket. Only have to take off the hand wheel and remove two screws to replace it. And you might as well replace the lock pins while you have it off (~$1 a piece).

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View CMS2's profile

CMS2

5 posts in 447 days


#11 posted 11-07-2015 08:25 PM

Brad,
Would you happen to know the part number for the pot metal pointer bracket?
Thanks
Chuck

View MrUnix's profile

MrUnix

4221 posts in 1662 days


#12 posted 11-07-2015 09:10 PM

Would you happen to know the part number for the pot metal pointer bracket?

422-04-014-5008 according to the parts diagram for a 1985 model.. I believe the ‘old’ part number was LTA-459, but it’s the same part, just using the old numbering scheme. Check the parts diagram for your Unisaw to verify.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

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