Broken Drill Press Spring

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Forum topic by Dave Owen posted 01-10-2010 07:43 PM 5844 views 0 times favorited 4 replies Add to Favorites Watch
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Dave Owen

254 posts in 3583 days

01-10-2010 07:43 PM

Topic tags/keywords: drill press broken spring repair

The spring assembly that returns the quill and handle on my 6-year-old Delta Model 17-990X has broken. Likely the spring broke, but since I have not yet disassembled it, I don’t know for certain. If anyone has had a similar experience, I would appreciate knowing what, if any, difficulties they encountered in making a repair – and also whether disassembly involves any safety issues.



-- Dave O.

4 replies so far

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James Austin

27 posts in 3690 days

#1 posted 02-03-2010 06:01 PM

I don’t have a Delta, had a similar thing happen on my old Generic drill press (St Louis Tool Co).

The hook on the end of the coil spring broke off… I disassembled mine, bent a new hook, and reassembled… Be careful taking the unit off the drill press, and it’s a pain to put back on, because you have to wind the spring…

My guess would be that you can get a new spring from Delta, and most probably, the springs on all mfg drill presses are identical…..

-- Some people have a shop so they can build things, the rest of us build things so we can have a shop...

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117722 posts in 4086 days

#2 posted 02-03-2010 06:02 PM

Not something I’ve doon before

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Dave Owen

254 posts in 3583 days

#3 posted 02-03-2010 06:17 PM

Thanks fellows! The saga continues. I obtained a replacement spring from a Delta Service Center. Unfortunately, the replacement spring was badly tempered and the shaft end bent on assembly, so that problem’s not yet solved. Shortly before the spring broke originally, something started making a terrible noise on start-up with resulting loss of power. That was first thought to be a belt tension problem – but wasn’t. Upon dis-assembly of the center pulley assembly, I discovered the problem was a set screw that had backed out allowing a a drive pulley to rotate under load. That problem, as I say, has been determined. Re-assembly – while working against two compression springs is another matter. I’ll post again when (and if) I get that accomplished.

I feel at a loss without my drill press. When I built my shop, I almost settled for a smaller bench-mounted tool. Because I use it for so many different things, and so frequently, I’m glad I didn’t. Now that it’s not working – I really miss it.

-- Dave O.

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Dave Owen

254 posts in 3583 days

#4 posted 02-03-2010 10:08 PM

Well folks – it wasn’t easy to assemble two high-compression springs, one spring cup, two sets of pulleys, two belts, one nylon rod, one set screw, and two snap rings on one variable speed shaft – but that part’s finally done; and by manually retracting my spindle, I can once again use my drill press. Once my replacement spindle-return spring comes in and installed successfully, I’ll be fully back in the drilling business.

Thanks again for your help.

-- Dave O.

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