G1023 odd behavior

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Forum topic by skatefriday posted 07-22-2014 07:21 PM 3600 views 0 times favorited 39 replies Add to Favorites Watch
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416 posts in 1480 days

07-22-2014 07:21 PM

I’ve had my G1023 up and running now for a couple of months and have
run a couple hundred board feet through it. In general I’m happy with
the purchase and consider any problems I have making absolutely square
cuts to be the problem of the operator and not the tool.

Today as I was changing out a blade when I lowered it all the way down
I noticed that the blade slowly rotated about an inch or two as it reached
the bottom of the travel. I had never seen it do that before. I then
turned on the saw and the motor made noise, but the blade didn’t turn.

I raised the blade, it rotated back as it came off the bottom of travel,
and turned on the saw and the blade spun as normal.

Given that I was watching closely, I also think I saw a position along
the vertical travel where the blade would deflect slightly to the left
and then come back to 90 degrees as it travels vertically through a
certain position. I presume this might be distinct and separate from
the first problem described.

Anybody have any idea what might wrong.

39 replies so far

View ChrisK's profile


1964 posts in 3079 days

#1 posted 07-22-2014 07:36 PM

Are the belts hitting a pile of saw dust in the cabinet or a cut off caught up inside?

-- Chris K

View skatefriday's profile


416 posts in 1480 days

#2 posted 07-22-2014 11:49 PM

Went out and vacuumed out all the dust from the cabinet and the poked
around at the belt with the saw unplugged.

If I lower the blade while rotating the belt at about 1 inch above
the table, the belt encounters a blockage. Gently pulling at it,
rocking it back and forth makes a distinct knocking sound and
it will go no further. I haven’t been doing any cutoffs lately that
would be small enough to fall down through the insert and the
sound seems more metallic than wood, and there’s no give at
all when it makes contact.

Unfortunately there’s really no way that I can see to get any
visibility into what might be down there without taking the motor

Sigh. Project on hold until I get this fixed. This is my first real
table saw (always owned bench models in the past), and it’s
somewhat disappointing to see something break/come apart with
only 3 or 4 sheets of plywood plus miscellaneous stuff through
the saw. I am very careful with it and am certain that I did not
drop anything down there.

Guess I’ll have to wait for Grizzly customer support to reopen.

View gfadvm's profile


14940 posts in 2687 days

#3 posted 07-23-2014 12:47 AM

Could you use a small mirror on a stick to see into the problem area without taking the motor off?

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

View skatefriday's profile


416 posts in 1480 days

#4 posted 07-23-2014 03:48 AM

gfadvm, I’m learning that woodworkers spend more time making tools to make stuff than actually making said stuff. That’s an excellent idea which I’ll be implementing tomorrow. In the meantime in order to make one cabinet I’ve made a router circle cutting jig, a thein separator, a jig for constructing a wood storage shelf, the wood storage shelf, an assembly/outfeed table, a biscuit joiner jig, the list goes on… And the wife wonders why it’s taken two months for the cabinet.

View skatefriday's profile


416 posts in 1480 days

#5 posted 07-23-2014 04:02 AM

How could I forget the table saw sled? Easily the most useful jig I’ve built so far.

View skatefriday's profile


416 posts in 1480 days

#6 posted 08-03-2014 04:17 AM

Last weekend the problem mysteriously disappeared.

It returned to haunt the machine this afternoon. I made a video
that demonstrates what’s going on.

You can hear in the video something knocking and yet I can’t
see anything but haven’t yet taken the motor off.

View knotscott's profile


8012 posts in 3373 days

#7 posted 08-03-2014 11:39 AM

Have you checked inside the fan cover for something binding?

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

View toolie's profile


2121 posts in 2626 days

#8 posted 08-03-2014 01:59 PM

id send that video to griz tech support before doing anything else. there’s interference somewhere.

-- there's a solution to every just have to be willing to find it.

View Shawn Masterson's profile

Shawn Masterson

1325 posts in 1946 days

#9 posted 08-03-2014 02:08 PM

If it were me I would throw on an old junk blade start the saw and slowly crank it down until it it clears the stoppage.

View ChuckV's profile


3118 posts in 3524 days

#10 posted 08-03-2014 02:33 PM

Does it happen without the blade installed? Does it happen without the belt installed? Can you get someone else to spin the blade while you look and listen from inside?

-- “Big man, pig man, ha ha, charade you are.” ― R. Waters

View skatefriday's profile


416 posts in 1480 days

#11 posted 08-03-2014 04:00 PM

It does happen without the blade installed. Haven’t taken
off the belt yet. I was able to get a pretty good view with
the cell phone camera and can’t see any obstructions.

I’d assume it’s in the bearings or motor except for the fact
that it’s position dependent. Raising the blade removes
the obstruction. Lowering it eventually completely binds
the blade so it won’t move at all. And when it’s obstructed
turning on the motor results in no movement of the blade,
so whatever it is, it’s quite strong.

But it doesn’t feel like a piece of wood when it hits
the obstruction and in the video you can hear the sound.
Does that sound like wood or metal? I would lean towards

View cabmaker's profile


1730 posts in 2806 days

#12 posted 08-03-2014 08:42 PM

set screw backing out of she eve?

View Nubsnstubs's profile


1286 posts in 1727 days

#13 posted 08-03-2014 09:27 PM

Hi Skate, I noticed in your vid, you still had the cover plate in place. Remove that and you’ll be surprised at what’s visible from the top. You might find your problem there. ........... Jerry (in Tucson)

-- Jerry (in Tucson)

View bigblockyeti's profile


5113 posts in 1718 days

#14 posted 08-03-2014 10:58 PM

Whatever is causing the stoppage, it seems very solid. I’d be worried you have a bearing going bad on either the spindle or in the motor. If the cage separating the balls inside of a bearing falls apart, the balls can hit each other and sometimes cause a shaft locking effect. This usually doesn’t go by without a significant noise that no one would confuse as being normal. A screw backing out of one of the sheaves and hitting something could be a possibility too.

View skatefriday's profile


416 posts in 1480 days

#15 posted 08-04-2014 04:54 AM

Hey Jerry, I should have mentioned that 10 days ago when I first posted about the
problem I did remove the insert and had a look around and there was nothing
that could have caused this problem visible. I should have remembered to remove
the insert prior to making the video though just to preempt this line of reasoning.

I’ll let you all know what Grizzly says tomorrow. I’m hoping they don’t say
corporate policy blocks youtube in the tech support department. :-)

Thanks for all the suggestions.

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