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Grizzly G0490X Belt/Sound Issues

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Forum topic by Woodtechie posted 01-28-2014 03:48 AM 1175 views 1 time favorited 22 replies Add to Favorites Watch
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Woodtechie

48 posts in 384 days


01-28-2014 03:48 AM

Just sent this email to Grizzly, was wondering if anyone here has any other ideas for what I can check or try:

I recently ordered a G0490X, and I’m having an issue with the belt & motor. I’m just finishing the initial setup, and the jointer seems too loud when starting and stopping.

At first I thought it just wasn’t tensioned enough, so to increase the tension I used some wood and quick grip clamps to actually tighten down the motor and increase the tension. This didn’t help, and then I noticed that the belt had started to pull away from the motor. After a second try where I added extra tension, the belt still was pulling away from the motor after a few test starts and I noticed that the belt was a little twisted/warped. It’s bad enough that turning the motor by hand actually causes the belt to pull off immediately, and you can see the belt twisting.

I have three theories for why this might happen…
-Motor & jointer not lined up properly (this appears to be pretty close – the manual said to just line it up “by eye”)
-Motor tilted slightly (going by the instructions, it’s supposed to just fall into place)
-Belt is twisted or deformed

Which is more likely to be the problem? Is it possible that the belt got into a bad spot during shipping and ended up too twisted to use?

I’m hoping it’s just a crap belt which needs replacing (easiest thing to do), any ideas?


22 replies so far

View darthford's profile

darthford

532 posts in 678 days


#1 posted 01-28-2014 05:20 AM

I lined up the pulleys with a 24” rule BEFORE the fence was installed. Also I don’t think the motor will just fall into place especially if you loosened the bolts on those white motor mounts in the cabinet as I did (face palm). I had to remove the motor, then measure and bolt down those motor mounts in the cabinet square and parallel, then reinstall the motor. From that point forward you can loosen the motor bolts OR the mount bolts but not both at the same time or it will get out of whack again.

See my assembly blog below, its a 2 part blog. Note my use of a bottle jack when aligning the motor parallel and square, this made it a lot easier.

Link to part 2 of my G0490 assembly blog

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darthford

532 posts in 678 days


#2 posted 01-28-2014 05:28 AM

That said while I have no issue with the belt, mine starts hard, starts loud and runs loud. Works fine but I’m likely going to replace the China bearings in the cutter head soon.

Here’s a video of decibel readings from several machines including the jointer.

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Woodtechie

48 posts in 384 days


#3 posted 01-29-2014 01:13 AM

Ooo THAT is helpful. Yeah, I think the louder sounds I was hearing was probably when the belt was coming off. A few times it sounded pretty close to yours. (I considered the running sound pretty quiet, considering.)

Grizzly never responded back to my email (maybe a spam filter got it) so I may need to call. First I’ll try getting the alignments a little better. I’m a little skeptical of how much help you can really get over a phone anyway.

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Woodtechie

48 posts in 384 days


#4 posted 01-30-2014 01:03 AM

Okay, heard from Grizzly. Surprisingly, my first guess might be on to something!

“Typically, this is caused by a defective belt.”

View RockyTopScott's profile

RockyTopScott

1151 posts in 2232 days


#5 posted 01-30-2014 01:09 AM

I just got my G0490x put together this past weekend. I spent most of the time with getting the belt tension correct and the alignment just right.

Trial and error. If anyone knows a secret shortcut, I am all ears.

-- “When you want to help people, you tell them the truth. When you want to help yourself, you tell them what they want to hear.” ― Thomas Sowell

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Woodtechie

48 posts in 384 days


#6 posted 01-30-2014 01:25 AM

I could be totally wrong, but going off the manual which didn’t seem to concerned about perfection (and the email response), I’m hoping the alignments aren’t so critical. Tension yes, but I’m sure I can get that right with the “clamp trick” I was forced to invent. Next time I do it I’ll post a pic. Everybody here has wood clamps (not necessarily a bottle jack :P ).

My belt definitely does not look like the picture above – there’s a noticeable twist at the bottom.

My next concern is going to be the fence. Probably not critical as I don’t expect to tilt it much, but I just cannot figure out what the hell is going on with the 90 degree stop. That and I think I may have installed it too low, because I had a hell of a time adjusting it so it wouldn’t scrape the table. Still needs work!

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darthford

532 posts in 678 days


#7 posted 01-30-2014 07:22 AM

Woodtechie check my assembly blog, notice how I used a couple 3/8 drill bits to make installing the fence easy at the proper height. See the drill bit in the pic on the left side of the fence base, there’s another on the right side.

View bowedcurly's profile

bowedcurly

501 posts in 483 days


#8 posted 01-30-2014 04:23 PM

take the fence off first, you can get those pulleys coplaner it just take awhile, the set screws need to be checked several times if you get the pulleys coplaner or when you do start the jointer and let it run, THE MAIN THING TO DO IS NEVER NEVER NEVER RESTART THE JOINTER WHEN YOU HAVE STOPPED IT UNTIL THE BELTS MOTOR HAVE STOPPED COMPLETLY IF YOU DO THIS IT WILL JUMP THE SET SCREW LOOSE, NEVER START AND STOP AND START UNTIL THE MACHINE IS FULLY STOPPED put a second set screw on top of the other to help keep it tight you will need one with a flat face, my 490 runs very smooth but my pulleys are coplaner, and I never start it when it’s shutting down

-- Staining killed the wood<<<<<>>>>>Dyeing gave it life

View RockyTopScott's profile

RockyTopScott

1151 posts in 2232 days


#9 posted 01-30-2014 06:37 PM

bowedcurly, does your motor sit on the motor mounts perfectly level or does it slant some?

-- “When you want to help people, you tell them the truth. When you want to help yourself, you tell them what they want to hear.” ― Thomas Sowell

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bowedcurly

501 posts in 483 days


#10 posted 01-31-2014 02:30 AM

I went to bed sorry, my concern was getting the pulley faces coplaner, making sure my screws are tight and such but I never really looked at the motor just mainly getting those pulleys coplaner if that makes any sense, I think

-- Staining killed the wood<<<<<>>>>>Dyeing gave it life

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Woodtechie

48 posts in 384 days


#11 posted 01-31-2014 03:08 AM

@darthford Maybe I have the fence right then. That part of my fence is actually slightly higher than a 3/8 bit in height. But the only way to back the fence up enough to use the full 8” capacity is to sit the fence on the “fence extension table” (whatever it is) which is slightly higher than the outfeed. It just seems odd, as I have to lift the fence to move it forward. (Maybe I need to post a picture.)

The fence is the only thing I might regret about getting this model. The rack & pinion fence on the cheaper jointers seem so much nicer. I wonder why they don’t just make the fence out of light aluminum and put a nice big rack & pinion on there? Why does the fence need to be so heavy? My Grizzly bandsaw has an alum resaw fence and I like it.

Speaking of design, anyone know why they chose to make the infeed table longer, rather than the outfeed table? I would think the outfeed would be better to have extended (or just extend both equally half as much).

Grizzly is sending out a new belt to try.

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Woodtechie

48 posts in 384 days


#12 posted 02-06-2014 12:22 AM

Geez. So, I have a new belt, but they put it in this tiny box so it’s even more screwed up than the original belt.

I guess I’m going to have to mess with the alignment again and hope it’s just a problem with that, rather than the belt.

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Woodtechie

48 posts in 384 days


#13 posted 02-09-2014 05:21 AM

I think I finally got this right. For the record if anyone else runs into this thread via search…

The new belt flattened out overnight so it actually ended up looking a little less twisted than the original, although I’m not sure how critical that was. Once I had the new belt on, it was still coming off just turning the motor by hand! So I ended up re-adjusting the motor positioning all over again. Might have just got lucky, since I finally got it to stop coming off when manually turning. I think what did it was pulling the motor towards the back of the cabinet further, so despite what I thought, I guess the wheels weren’t co-planar. Damn that motor is heavy.

To fix the belt tension issue, I did this:

Large Irwin quick-grip clamps with a 2×4 to pull the motor down. It needs to be a 2×4 (or maybe a 2×3) – anything thinner bends too much, and anything wider will be too close to the belt, preventing you from doing the tension test properly. But this method definitely helped get that belt a lot tighter. This might not be possible on other models, since the clamps were pushing against a bottom ledge of the cabinet down below (you can barely see).

I think I had about a 1/2” deflection before, and after using the clamps to increase tension it’s now around the recommended 1/4” deflection when applying “medium” pressure to the belt.

It is still a bit loud when starting up, and a little bit when spinning down. Less so than it was before when the belt was loose, definitely. And no burning rubber smell now. :) As far as the noise, it seemed to quiet down a bit after I turned the jointer on/off a few times. (Jury is still out on that one, as I’ve yet to actually use it.)

But it’s a pretty big machine, highest HP tool I have by far. I wonder why they didn’t increase the power to the motor gradually on startup to avoid the rough startup.

As far as the jointer itself, other than minor cosmetic stuff, I’ve yet to notice any real issues or defects that some other threads have mentioned. Fence seems pretty flat & straight to me, beds seem to be perfectly aligned and flat. But maybe I’m just more forgiving… I guess I’ll find out for sure once I start using it.

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darthford

532 posts in 678 days


#14 posted 02-09-2014 06:21 AM

Yeah man she kind of goes BANG on start-up but with the 94 decibel cyclone dust collector going its a lot less noticeable. lol I gave mine a good work out on some rough saw Sapele recently VERY happy with the results. No snipe, everything so flat it kind of suctions to the table top. Mind you I have the Byrd Shelix cutter head.

Glad you got yours sorted out. Loved the ‘your getting on my last nerve get tight you mother’ clamp approach you took, that’s the way don’t take any crap off your tools!!

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Woodtechie

48 posts in 384 days


#15 posted 02-09-2014 07:49 AM

There were some censored words used at a few points but it worked out well enough. lol No Byrd Shelix but I do have the standard Grizzly spiral cutterhead.

Seems like “add more clamps” is my answer to half the problems I encounter lately.

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