LumberJocks

Unisaw load springs- in the right spot?

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by TheFridge posted 02-17-2015 04:36 PM 863 views 0 times favorited 14 replies Add to Favorites Watch
View TheFridge's profile

TheFridge

5764 posts in 947 days


02-17-2015 04:36 PM

Topic tags/keywords: question tablesaw unisaw load spring

Can’t tell from the unisaw diagrams if the load springs are in the right spot. I don’t think they are. Any help would be appreciated. Don’t mind the brass screw. Had to put that in or buy a new arbor bracket. Which wasn’t happening because of this new guy

And this old guy

Thanks again

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.


14 replies so far

View MrUnix's profile (online now)

MrUnix

4208 posts in 1660 days


#1 posted 02-17-2015 05:02 PM

Are you referring to the spring washers? And which ones? There is one that is used in the arbor bracket and then there are two used in conjunction with the motor bracket. The ones for the motor bracket are shown outside the yoke in the diagram which is wrong… they go on either side of the motor bracket inside where it mounts to the yoke.

Cheers,
Brad

PS: Why did you need the brass screw?

-- Brad in FL - To be old and wise, you must first be young and stupid

View TheFridge's profile

TheFridge

5764 posts in 947 days


#2 posted 02-17-2015 05:04 PM

Both sides of motor bracket. Got it.

That would explain why the arbor bracket is so close to the guard.

Thanks

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View MrUnix's profile (online now)

MrUnix

4208 posts in 1660 days


#3 posted 02-17-2015 05:13 PM

I don’t think they would alter the arbor bracket shaft position that much.. maybe just a hair as they are really tight to get in. I think they serve two functions.. one is to act like a washer so you don’t have direct metal on metal contact between the yoke and motor bracket, and secondly, to keep it somewhat centered. The motor bracket is captive on the shaft using a spring pin (or tapered pin on older models), so it’s placement is fixed. The arbor bracket is able to slide along the shaft so you can align the arbor pulley with the motor pulley, which is what determines it’s position along the shaft.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View TheFridge's profile

TheFridge

5764 posts in 947 days


#4 posted 02-17-2015 05:17 PM

In the pic you can see how far over the arbor bracket is. In order to compress the washer to prevent the shaft from moving back and forth I had to put the arbor bracket tight to the yoke. It all makes sense now. Thanks man.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View MrUnix's profile (online now)

MrUnix

4208 posts in 1660 days


#5 posted 02-17-2015 05:27 PM

Got ya.. that would indeed cause problems.. and I guess you were not able to properly align the pulleys with it setup like that. Have you used it that way and if so, I bet the belts were getting pretty warm :) I don’t know why they show them where they do in the parts diagram, and it seems like it’s been listed like that in every parts diagram I’ve seen regardless of year.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View TheFridge's profile

TheFridge

5764 posts in 947 days


#6 posted 02-17-2015 05:33 PM

Damn diagram kills me. Yeah it’s been in use for a month or so. Never noticed a smell so I just rolled with it. I noticed a problem a couple day ago which led me to tearing it apart. the blade wasn’t staying in the same plane as I raised its high is the real reason why I have the saw apart.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View jshroyer's profile

jshroyer

80 posts in 1119 days


#7 posted 02-17-2015 05:45 PM

mine were located between the motor bracket and the trunion. i had to press out my pivot shaft because it was corroded and wouldn’t move a few weeks ago. because of that i dont believe it was taken apart ever or maintained by the previous owner.

-- http://semiww.org/

View TheFridge's profile

TheFridge

5764 posts in 947 days


#8 posted 02-17-2015 05:54 PM

Belts should be pretty loose?

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View jshroyer's profile

jshroyer

80 posts in 1119 days


#9 posted 02-17-2015 05:59 PM

with my unisaw i am aligning my arbor pullies with the motor pullies. my arbor doesnt have a set axial positon on the shaft so i am moving it to its most desirable location to ensure that the pullies line up. the point of these springs is to ensure that the motor bracket stays fixed in one direction between the trunnion. you have to have some clearance between them to put it together but need a hard stop in one direction and something to keep it there. thats based on what i learned in my mechanical design classes at engineering school. i mean they principles havent changed in a long time so i assume they read the same books that i did when the designed the saws.

-- http://semiww.org/

View TheFridge's profile

TheFridge

5764 posts in 947 days


#10 posted 02-17-2015 06:02 PM

Yes. It makes sense now, but the damn diagrams threw me off. I got it back together now. Wasn’t too bad.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View MrUnix's profile (online now)

MrUnix

4208 posts in 1660 days


#11 posted 02-17-2015 06:07 PM

So would you suggest putting both spring washers on one side of the motor bracket? And if so, which side? When I disassembled the yoke/motor bracket, they both fell out as I removed the shaft.. I never verified that they were on either side of the bracket, however that arrangement made the most sense to me at the time I reassembled. I absolutely could be wrong about it.. Hmmm… maybe I’ll post this query over at OWWM and see what the die hard experts have to say about it.

As for belt tension, the manual says there should be 1/4” deflection at the center point of the belts between the pulleys when pushed with finger pressure.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View TheFridge's profile

TheFridge

5764 posts in 947 days


#12 posted 02-17-2015 06:11 PM

I’d appreciate it.

Instead of keep the motor bracket centered, it’s shifting to the right when raising, and back to the left when lowering. As much as .007 total.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View MrUnix's profile (online now)

MrUnix

4208 posts in 1660 days


#13 posted 02-17-2015 06:20 PM

LOL.. didn’t even have to ask.. quick search over at OWWM turned up several people with the same question about the spring washers.. here is the answer:

Guess I need to pull that shaft back out and reposition them ;-O

Thinking about it further, it does make sense.. when the blade is tilted, the weight of the assembly is resting metal on metal so it will not shift. Sorry for the initial wrong info.. my bad.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View TheFridge's profile

TheFridge

5764 posts in 947 days


#14 posted 02-17-2015 06:21 PM

Thank yall for the help. After how many times I’ve done this already, I guess it shouldn’t be a problem.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com