SCM T130 bearing change

[Bill Dufour]

I have seen sockets for sale that might work. I think they are designed to remove four wheel drive axle nuts. they look like a giant drag link socket with the middle part ground off.
Actually I made something for a similar job. The rear sprocket set on my bicycle was held on by a slotted nut. I took a short piece of water pipe and hack sawed filed two lugs on one end.
Be careful I have no idea if it may be left hand thread?
Bill D.
Freewheel removal tool for bicycles
https://www.amazon.com/Mdvora-Coilov...jEALw_wcB&th=1
4x4 axle nut sockets
https://www.amazon.com/dp/B0C5R95N47...9ocXBfc2hhcmVk

[Jerry Bruette]

Hi Tom,
Been busy in the shop all day or I would have sent info sooner.
What you're looking for is a adjustable hook spanner. Here's a link to them at McMaster-Carr. https://www.mcmaster.com/products/ho...ty~adjustable/.

If you don't want to spend the money for a one time tool you can grind a cold chisel to the following profile and use that. You'd put the chisel in the slot and hit it with a ballpein hammer in the direction needed to tighten or loosen the nut. If the nut has a lock washer with a tab, you should replace the lock washer when reassembling the spindle. I've seen washers that were reused break during operation of the machine. Then you'll have a real mess on your hands. You should also put a little grease or oil on the washer when reassembling, it prevents the nut from grabbing the washer and twisting it. Sorry I didn't get this to you earlier.

IMG_1404.jpg IMG_1403.jpg

[Tom Yaegle]

Bill, I have the sockets for Fords. They are to big, will check auto part to see if there are smaller ones that may work.

Jerry, This nut is up in the spindle pulley so I think I am stuck making or buying a socket. I was not thinking of a washer tab so will check, thanks.

I am not sure if left or right hand thread. Will try squeezing my head up in there to see.

[Jerry Bruette]

You'll be looking for a axial lock nut socket. You'll have to determine the size nut. They have a numerical designation, smaller nuts have lower numbers and larger nuts have bigger numbers. You can find the dimensions in a Machinists Handbook, metric and sae. If you can't find a Machinists Handbook but can get some dimensions from the nut I can look it up in my copy of the handbook.

How much shaft is sticking out of the nut? You may need a deep well version.

[Tom Yaegle]

Here is what I am looking at, 100_2638.jpgIt is right hand thread and 1.730 or so inside socket dimension.

[Brian Holcombe]

Wow, it's not common to see a nut requiring a hook spanner to be used inside of something.

They sell sockets for this, but I think they won't work because you need to hold the end of the spindle also. They probably have a tube socket for this application.

Personally, I would try to drive it off with a chisel, then replace it with a similar style nut (high grade with a nylock insert) that has flats instead.

Keep in mid, everything on a relatively modern European machine is going to be in Metric.

[Jerry Bruette]

I agree with Brian. Get a long enough chisel and you can get that nut off, it's not too far in the cartridge.

Can you remove the spindle cartridge from the machine so you can work standing at the bench?

I doubt if you'll be able to find a hex nut in the proper thread pitch.

[Bill Dufour]

Looks like you need something similar to a crowsfoot wrench down there.
Bill D.

[Jerry Bruette]

Just going from the O.D. you provided here's a link to the McMaster list of SAE and metric locknuts.

https://www.mcmaster.com/products/sp...bearing-nuts~/

Looks like the closest SAE would be a N-06 nut. And the metric would be M-26 or M-30 depending if the face is stepped or chamfered.

The spanner sockets are also listed to the far right on the chart. That chisel method is looking way more economic. Don't be afraid of using the chisel I've used that method of loosening and tightening spindle nuts for 30 years.

[Bill Dufour]

I would buy and use. a pair of cheap needle nose pliers before going for too much hammering. Grind the tips to fit the slots on end. Use a big crescent wrench or pipe clamp to turn the handles.
Use a drill bit to figure the slot width.
Bill D

[Bill Dufour]

Get a hardened nut that will slip over the shaft. Grind away most of one end to leave two little ears to fit the slots. Use a socket to turn the nut. Fill the socket with paper towel so you are pushing the modified nut firmly onto the slotted fastener.
I have a lathe so I would get a solid round of iron or a thick washer and drill a clearance hole lengthwise. Then I would drill and tap for two screws to engage the slots. A washer I would weld on some pipe for a top hat look.
BilL D

[Tom Yaegle]

Thanks for ALL the ideas. My first attempt failed, it is 8pm and I quit for the day. I took a 2" socket and welded 3/16" key stock inside in 4 places. I knew better than try a impact gun, but the machine is on a hoist so I can stand under it. I did not want to lower and put the spindle on and a wrench on the spindle. The key stock was to hard and sheared of not sure where it came from. Will sleep on it.

[Warren Lake]

can you turn the machine upside down to work on that.

[Tom Yaegle]

Warren, I could turn it over. It has a slider that would have to come off also.

SUCCESS,100_2646.jpg100_2645.jpg100_2647.jpg100_2648.jpg100_2649.jpgIt was a pain in the hiney. 3' bar to get loose, but it is out. Thanks all.

[Warren Lake]

wow thats quite the adventure but you got it. After asking upside down then I though the spindle will turn. See you solved that as well, nice idea. I have the same machine. Needed bearings when I got it but needing bearings is not instantly often and it works excellent as it is.