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Planers running rough, need some experienced ears

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Forum topic by giser3546 posted 06-16-2014 03:04 AM 777 views 0 times favorited 15 replies Add to Favorites Watch
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giser3546

128 posts in 219 days


06-16-2014 03:04 AM

Finally got my 20” planer up and running and it sounds a little rough, particularly on the when shutting down. I was hoping to get the opinion of anyone familiar with these to let me know if this sounds like a problem or if I’m good.

Sorry for the scratched camera lens, I was going for the sound…

https://www.youtube.com/watch?v=JkSB9EATLNg&feature=youtu.be

-- "If you wait for it to rain, It will"


15 replies so far

View Yonak's profile

Yonak

489 posts in 268 days


#1 posted 06-16-2014 12:46 PM

giser, can you glean any information when you turn it by hand ?

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giser3546

128 posts in 219 days


#2 posted 06-16-2014 01:14 PM

Before turning it on I turned the cutter head a few rotations by hand and didn’t hear anything. Granted the thing is heavy, was difficult to get much speed on it by hand.

-- "If you wait for it to rain, It will"

View Buckethead's profile (online now)

Buckethead

1943 posts in 616 days


#3 posted 06-16-2014 01:44 PM

It reminds me of a card in my bicycle spokes. I wonder if there could be debris in the motor or gear box? Maybe on the cutter head itself, or where it attaches? At any rate, it sounds like something foreign in the works to me. Hopefully an easy fix.

-- Bucket, any person that spends 10k on a bicycle is guaranteed to be a $@I almost started to like you. -bhog

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giser3546

128 posts in 219 days


#4 posted 06-16-2014 02:05 PM

I may try to disconnect parts of the power transfer system and isolate the sound. Remove belt and switch on to see if its the motor, if not put the belts on and remove the sprocket/chain housing to see if its the blade or gear box. Does it sound like that process could cause any problems?

I would like to pull open the gear box and see how it looks inside but am wondering how reusable the seals and oil are are in there. Should I have new ones on hand before I try this?

-- "If you wait for it to rain, It will"

View Crickett's profile

Crickett

74 posts in 227 days


#5 posted 06-16-2014 02:16 PM

I prefer liquid gasket seals for my tool applications. I think they tend to last longer and taking more of a beating. This may sound crazy but if you can remove the housing, I would take something strong like a leaf blower and blast all of the dust cake/residue off of the moving components, and using a spackle knife to remove the tough stuff. Then re-lubricate as much as possible and replace any shot bearings and belts (bearings & belts are very inexpensive these days). This should get you moving in the right direction. Sounds like you found a pretty cool machine! Enjoy!

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giser3546

128 posts in 219 days


#6 posted 06-16-2014 02:51 PM

Much appreciated Cricket, as much as I hate to admit it I’m a fan of instant gratification and not having to wait a week for a $1 gasket to come in the mail will work for me.

I’m stuck at work at the moment and fighting the surges of panic that happen when I consider the possibility of gearbox issues or anything requiring specialized parts. I’ve dealt with mystery machines before and considering the difficulty I’ve had finding any information on Sunhill machinery I’m keeping my fingers cross I can fix it. The fact that the sound is fairly regular and constant seems not as bad as grinding or metal to metal sounds.

-- "If you wait for it to rain, It will"

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mrg

535 posts in 1746 days


#7 posted 06-16-2014 03:11 PM

I am assuming this was a used machine. It sounds like the fan on the motor is rubbing on the casing.the clunk at the shut down sounds like a gear jumping like you may have a broken tooth or the belt slipping. Look at the gears maybe a little grease and check to see that the gears are sitting on the shafts properly and that the locking pins are all OK. You may also have dry bushings.

Lots of luck.

-- mrg

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giser3546

128 posts in 219 days


#8 posted 06-16-2014 05:18 PM

The thought of stripped gears makes me nervous. My new plan of action is to remove the belt and run just the motor, if there’s no noise I’ll move the cutter head pulley by hand, if there is a noise ill drain the oil and open up the gear box since I’ve already check the sprocket cover, sprockets and chains. With the gear box cover removed Ill turn it again and if there is still a noise I’ll know its the blade, if not Ill know its the gear box.

When looking over the sprockets and chains I did a little guess work dealing with the tension of the chains. Should they be tight or have some play in them? There were a set of tension pulleys in there, the upper one was tensioned by a spring, the other was just tightened in place with a hex nut.

-- "If you wait for it to rain, It will"

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giser3546

128 posts in 219 days


#9 posted 06-16-2014 05:28 PM

If there are broken gear teeth, is the any hope of fixing those. I’ve heard from a few sources that its not too difficult.

-- "If you wait for it to rain, It will"

View Quanter50's profile

Quanter50

161 posts in 1043 days


#10 posted 06-16-2014 07:12 PM

It looks like the same planer as the older Grizzly 20” planer. If it were my planer, I would tear it down and replace all the bearings. You will surely discover the problem and you will also get to know your planer on a more personal level.

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giser3546

128 posts in 219 days


#11 posted 06-16-2014 07:19 PM

It looks very similar but its 15 amp instead of 20 along with a few other small differences and I’ve read some other posts about how the gear boxes are not compatible. I’ve heard the Oliver Machinery company took over their facility and “might have some old parts hanging around”. Im quite familiar with the sprocket housing, I need to familiarize myself with the chip breaker and the internals of the gear box.

I did notice one of the rods running parallel with the rollers has threaded ends with no nuts on them and has about 1/2” of movement parallel to the shaft. Could be the anti kickback teeth or could be one of the rods for the chip breaker.

-- "If you wait for it to rain, It will"

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giser3546

128 posts in 219 days


#12 posted 06-17-2014 03:31 AM

I got some shop time and took a closer look trying to find the sound. I removed the belts and turned the cutter head by hand and heard some slight tapping although so slight I had to turn off my music to hear it. Unable to place it I drained the gearbox oil, which turned out no where near as clean as it seemed to be when I checked it.

The oil looked about like pudding but didn’t see any sings of broken or chipped teeth, and they roll smoothly by hand.

After doing all of this I just so happened to notice the nut holding the pulley coming out of the motor was not even hand tight, which I tightened. Planning to pick up some 80ish weight gear oil and refill the thing tomorrow but I have no idea if that will solve the sound.

-- "If you wait for it to rain, It will"

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giser3546

128 posts in 219 days


#13 posted 06-19-2014 03:28 AM

I was on my way to doing another test run and found what looks like a partially stripped motor shaft.

The pulley had similar damage, which made sense once I saw the key, if you could call it that.

My question now is how to fix it. I could either take the motor to an electric motor repair and get it fixed or get my friend to put a spot weld on the pulley and motor shaft.

-- "If you wait for it to rain, It will"

View realcowtown_eric's profile

realcowtown_eric

379 posts in 684 days


#14 posted 06-19-2014 03:59 AM

keyways can be rebuilt, perhaps if the motor repair folks won’t or can’t do it, then a machine shop can.

I’m betting you’ve found the culprit,

Do you have the shop manual for the beast?

Eric

-- Real_cowtown_eric

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giser3546

128 posts in 219 days


#15 posted 06-19-2014 04:14 AM

I can’t find any information about this particular machine, I have been reading manuals for just about every similar machine out there. Jet, Powermatic, Oliver, Shopfox, blah blah blah. I know a machine shop in town that helped modify a part for my band saw, might check with them.

-- "If you wait for it to rain, It will"

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