Quill feed spring problem

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hurdygurdyguy
Bronze Member
Posts: 2
Joined: Thu Feb 18, 2016 4:00 pm

Quill feed spring problem

Post by hurdygurdyguy »

I inherited a MarkV model last year from an uncle (he used it primarily in the '70's - '80's). While checking it out in my shop I noticed the quill feed would only advance about an inch then stop. The same 1 inch stop when the locks and depth stop wheel are removed. After reviewing a number of youtube tutorials I removed the quill feed (of course the internal cup-shaped washer fell to the bottom of the motor housing ... I'll have to fish that out later.. :rolleyes: ) ...

The spring housing rotates as it should with the spring tightening and feels normal... reinstalling the feed part way (until the threads engage with the quill) the feed advances and retracks the quill okay, but again stops at about an inch when the feed is pushed all the way back in.

I can't figure out what could be impeding the spring from winding/tightening when the quill feed is reinstalled all the way in ...

I've done all this without disassembling the housing as I'm leery of releasing belts etc, but I may have to to get to that large washer that fell off into the motor housing ...

Any help/advice would be great!!

Thanks!
silenthope
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Posts: 83
Joined: Thu Feb 11, 2016 12:29 pm
Location: Tucson, Arizona

Re: Quill feed spring problem

Post by silenthope »

Welcome...I have a couple of ideas, however I'm a newbie on the rebuilding/maintenence. As I'm sure others will tell you...pictures are worth a thousand words. I'm sure one of the pro's will chime in soon!
1955 Mark 5 SN-316919 (in pieces)
1956 Mark 5 SN-344051 (restoration in-work)
1962 Mark 5 SN-375717 (restoration in-work)
silenthope
Gold Member
Posts: 83
Joined: Thu Feb 11, 2016 12:29 pm
Location: Tucson, Arizona

Re: Quill feed spring problem

Post by silenthope »

1. Does the quill feed rotate at least three turns without the quill installed?
2. Have you inspected the quill feed gears?
3. How about the quill itself? Teeth look good?

If all this is good, my guess would be back in the shaft that couples the quill with the drive gear?
1955 Mark 5 SN-316919 (in pieces)
1956 Mark 5 SN-344051 (restoration in-work)
1962 Mark 5 SN-375717 (restoration in-work)
silenthope
Gold Member
Posts: 83
Joined: Thu Feb 11, 2016 12:29 pm
Location: Tucson, Arizona

Re: Quill feed spring problem

Post by silenthope »

If the quill will only advance and retract an inch,does the quill handle just stop? Does it turn farther? How did you remove the quill if it would only advance an inch?
1955 Mark 5 SN-316919 (in pieces)
1956 Mark 5 SN-344051 (restoration in-work)
1962 Mark 5 SN-375717 (restoration in-work)
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wa2crk
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Joined: Sat Jul 22, 2006 7:37 am
Location: Leesburg, Fl

Re: Quill feed spring problem

Post by wa2crk »

A small burr on the quill housing will cause more problems than you would expect. If you can remove the quill again feel the groove along the top for any small burrs. I had a condition that would cause the quill to retract a bit and then bump to a stop. The stop was very abrupt and the only thing I found was a very small burr along the groove. If you find any they can be removed with some judicious filing with a jewelers file.
Bill V
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JPG
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Location: Lexington, Ky (TAMECAT territory)

Re: Quill feed spring problem

Post by JPG »

Since you have 'successfully' removed the quill shaft, do it again.

Now first question did you loosen the set screw on top of the headstock?

Well now completely remove it. It should be a half dog set screw. The 'dog' rides in a groove in the top of the quill. The set screw both limits the quill motion in/out, but also prevents the quill from rotating in the bore.

With the set screw and quill shaft(pinion gear) removed the quill should be easily moved in/out manually.

Examine the groove. It should have a smooth bottom and straight sides. If not, do as WA2CRK mentioned. The 'dog' should move smoothly in the groove.
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10
E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
hurdygurdyguy
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Posts: 2
Joined: Thu Feb 18, 2016 4:00 pm

Re: Quill feed spring problem

Post by hurdygurdyguy »

Solved!

It proved indeed to be gunk and sawdust buildup in the teeth of the quill. When I removed the quill I dusted out the sawdust and reinstalled it with the quill feed (remember I said the large domed washer had fallen into the motor housing? I was afraid I'd have to remove all that to retrieve it ... all I had to do was turn it all upside down and it fell out! Duh!) ...But, it still stopped at about an inch!! I pulled it all out again and looked closely at the quill teeth. There was still deposits of gunk in each of the teeth. I took a box cutter blade and scraped each tooth clean, reinstalled and voila, it works like a charm!!!

I was surprised at how little build up could impede the quill feed! I'll be making sure that's kept clean!!

Thanks so much for all the suggestions!! This is a great community! Especially useful were the ones to remind me to make sure those "hidden" set screws were loosened. I almost tried driving out the quill feed with a wooden mallet when it wouldn't move when I remembered reading about the set screws!

I love this Shopsmith and it has already proved an invaluable tool in my small workshop!!

R Mohr (aka hurdygurdyguy)
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