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Thanks to all the LJ's that told me to be patient about getting a bandsaw. Last weekend I was able to snag a Delta 14 inch bandsaw model 28-203 for $160! It was in working order, clean, and seemed to be a bandsaw I could upgrade or find parts for pretty easily.

This weekend I took apart the upper and lower bolts that move the guide blocks and bearings back and forth. I removed all the rust and lubed them up with a powdered graphite. The main reason for doing this was that the bolts were difficult to move and a little rusty. I think the guy I bought it from had not adjusted the tension or guides for months or longer. This brings to my question. For some reason that I can't figure out, the bolt that should move the lower guide blocks back and forth is not moving them no matter how much I turn it. I can take bolt out completely and no movement. I can only twist the bolt so tight to the right and it just stops. All of this movement does not move the blocks at all. What am I missing?

DISCLAIMER - All I know about this bandsaw and tools in general has basically come from LJs, so you wont offend me by suggesting an obvious solution bc it probably wasn't obvious to me. Here are some pics:

Wood Automotive tire Gas Bumper Metal


Automotive tire Tire Bicycle part Tread Rim


Automotive tire Tire Fixture Gas Automotive wheel system


Tire Wheel Automotive tire Bicycle part Vehicle


Thanks in advance for any help you can provide.
 

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That's a great bandsaw, for a real low price…good score. I have one, and love it.
There is a set screw on the bottom collar, and some washers to the left of it, that should keep it in place. It's not supposed to move.
 

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I think shopdog means the collar isn't supposed to move. On mine, that collar (on the lower screw) is up close to the trunnion (on the left in your photo). That keeps the screw from moving back and forth, that motion goes into the support bracket, moving the guide blocks back and forth as needed. You need this adjustment when you cahnge blade widths. Move the locking collar up against the trunnion and then see if the guide blocks move. (make the bottom collar look like the top one)
 

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Discussion Starter · #5 ·
I appreciate the post Fred. This is where I was at when I started the topic. My issue is that I have tightened down and loosened the collar around the lower screw many times with no success in moving the guide blocks. As i turn the screw left it eventually comes at me and I can take it out if needed. As I turn the screw right it makes it way through the trunnion but it stops abruptly in one place (pic 2). I cannot keep turning it right with the collar tightened or loosened, and the guide blocks never move. This is where I am stuck because I was under the impression that if I could keep turning it right the guide blocks would be able to back off the blade.

I just ordered some new blades and I am worried I will not be able to adjust the blocks appropriately. Any advice would be appreciated. Thanks.
 

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I think the bracket may be stuck or broke. That locking collar is to stop the screw from coming at you, it must be slipping to allow that jack screw to back out. I'm wondering if the threads in the bracket are stripped out at this point. It's not that complicated, the screw turns and the threads move the bracket back and forth.
 

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Discussion Starter · #7 ·
Is the jack screw the major screw that I keep fiddling with back and forth? If so … it goes all the way through the blue cast iron frame before stopping. You can see part of it in pic 2 on the backside of the frame. I am not an expert but I have taken that screw out, cleaned it with a wire bush, put graphite on it and inspected the threads. It does not look like any threads are bent or anything where it keeps stopping.
 

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Chris, I'll have to look at mine tonight, but I believe that locking collar needs to be locked down as far to the left as it will go. That will keep the knob/bolt from coming out towards you (it shouldn't). Right now, the knob is free to move, so it moves and the guide blocks don't. Having that collar to the left will make it so the knob cannot move in/out, and when you turn it, it will force the guide blocks to move.

In other words, the bolt/knob should not move in/out, the action of it rotating should move the guide, but the bolt stays put. The fact that it's coming out means the collar is in the incorrect position, and the force required to thread/unthread the bolt from the guide is less than the force required to move the guide along the metal tube it's on.
 

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Judging by the pictures, it looks like your lower bearing guide works. Just make the guide block collar in the same position as the bearing guide. They work under the same principles. Good luck! Reply back if it still doesn't work, I will take a picture of my delta's lower guide assembly.
 

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OK, as I look at pic #2, the jack screw has backed out toward you. With it like that, had you pushed it in; it should have moved the bracket in as well. So what Ed suggested should solve the problem, that collar does need to be locked tight against the trunnion. I no longer think there are any threads stripped, though I suppose the block could be frozen in place for some reason.
 

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As pointed out, the locking collar on those shafts need to be secured via their set screws. They should not move when adjusting the guides (turning the adjusting shaft). If you have torqued them down and it still moves when turned, then chances are the guide bracket is stuck.. you need to disassemble, clean and then wax it up so it moves freely. Here is a picture of how they look in their proper position:

Product Motor vehicle Gas Office equipment Machine


Cheers,
Brad
 

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Discussion Starter · #13 ·
Thanks guys. I have been able to adjust the 2 bearings and the upper guide blocks with no problem. I did not realize I wasn't supposed to loosen the set screws each time I adjusted the guides. I won't be messing with them as much anymore so thanks for the advice.

I could have sworn I have tightened down the screw and tried to adjust the lower guide blocks before .. but I will double check. I may have to start taking it apart and clean/wax like Mr. Unix suggested. I appreciate all the help.
 
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