Taking out a little wear

[TheOldHokie]

Nick Sacco had some backhoe parts that were just a tad worn and I volunteered to do a little machine work for him. Here are the new bushings he needed to replace the old worn ones that are NLA and the two very badly worn bucket links that needed to be rebored and bushed. Just one more link to bore and the job will be done.

Nick is a very nice guy and helped me out by contributing the shell reamer and arbor to my tool crib

Dan

 

[fried1765]

Nick Sacco had some backhoe parts that were just a tad worn and I volunteered to do a little machine work for him. Here are the new bushings he needed to replace the old worn ones that are NLA and the two very badly worn bucket links that needed to be rebored and bushed. Just one more link to bore and the job will be done.

Nick is a very nice guy and helped me out by contributing the shell reamer and arbor to my tool crib

Dan

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Nice!

 

[Henro]

I’m trying to figure out why that reemer (if that is what it is) looks off center in the first picture…

 

[arml]

Well, if the worn hole is worn off center, then best find true center. I think
TheOldHokie had that figured. me thinks....

 

[TheOldHokie]

I’m trying to figure out why that reemer (if that is what it is) looks off center in the first picture…

Its not a reamer. Its an adjustable boring head and boring bar that I used for the rough cut. It looks off center because it is i will post a picture of the real thing with the spindle off when I finish up tomorrow. Until then here is a stock photo.

Two passes with the boring head to rough cut to 1.475. About .100 on each pass. The reamer was used to finish the last rough cut to final size (1.500)

Dan

 

[Matt Ellerbee]

I’m trying to figure out why that reemer (if that is what it is) looks off center in the first picture…

Some type of fly cutter maybe? I’m just a YouTube machinist, so what do I know?

 

[mcmxi]

I’m just a YouTube machinist, so what do I know?

Me too ... and I'd only use a four jaw chuck! That's truly a YouTube joke and no harm intended, and I do realize that there isn't clearance for a four jaw.

One of my favorite channels is Cutting Edge Engineering in Australia. Really cool fixes, overhauls and projects are featured on that channel.

I have no idea who Nick Sacco is.

 

[arml]

Well, the reamer comes in at last play...fit the bushing.

 

[Matt Ellerbee]

Me too ... and I'd only use a four jaw chuck! That's truly a YouTube joke and no harm intended, and I do realize that there isn't clearance for a four jaw.

One of my favorite channels is Cutting Edge Engineering in Australia. Really cool fixes, overhauls and projects are featured on that channel.

I have no idea who Nick Sacco is.

Yes. Curtis is awesome at his craft!

 

[Henro]

Its not a reamer. Its an adjustable boring head and boring bar that I used for the rough cut. It looks off center because it is i will post a picture of the real thing with the spindle off when I finish up tomorrow. Until then here is a stock photo.

View attachment 122990

Two passes with the boring head to rough cut to 1.475. About .100 on each pass. The reamer was used to finish the last rough cut to final size (1.500)

View attachment 122991

Dan

Of course, that makes sense. I thought the second picture was an after picture and the first picture was an action picture of what was happening before the second picture.

If I had paid more attention, I would’ve seen the first picture shaft was black and the second picture shaft was shiny

 

[arml]

You see, it's easy if you know how....45 years as a machinist and I still smile. Yep.

 

[TheOldHokie]

Yes. Curtis is awesome at his craft!

Keith Rucker (VintageMachinery.org) is fun to watch - he rebiilds old machinery and has been around the block a few times. He also isn't obsessed with getting his face in front of the camera.

He knows and shares a lot of the quick setup tricks the old timers used to save time before CNC and digital probes dumbed things down. I just recently watched him show how to center and zero the depth for a shaft keyway using his eyeballs and the milling cutter. Edge finder never came out of the box....

Dan

 

[Showmedata]

using the lathe chuck to hold round parts on the mill is brilliant. Filing that one away...

 

[TheOldHokie]

You see, it's easy if you know how....45 years as a machinist and I still smile. Yep.

For me the learning part is the fun part. For 40 years I made my living with a keyboard and this is my retirement education/recreation. Go easy on me

Dan

 

[Runs With Scissors]

That is awesome.

I love these type of threads.

Although they make me a little sad because I wish I had become a machinist.I love the tools and skills involved to do things like this.....Just another example of not being able to see the forrest through the trees I guess.

BTW that 3 jaw chuck idea is "brilliant" for holding round parts (I just learned another thing )

 

[ken erickson]

Interesting thread Dan!

In my gunsmith days this was one of my favorite tips to quickly find the center of round stock when drilling a cross hole. Amazing how accurate it was and I always had a 6 inch rule in shirt pocket. Of course when drilling needed to be done "dead nuts accurate" I would use an edge finder and set up a dial indicator.
Not my photo, just pulled it from the net quick and I would used a center drill , not a tap but you get the idea and it was my Bridgeport milling machine.

 

[TheOldHokie]

BTW that 3 jaw chuck idea is "brilliant" for holding round parts (I just learned another thing )

i can't claim any brilliance. Table chucks for milling machines are standard issue.

Rather than invest in one I repurposed a nice brand new Kitigawa plain back that I picked up dirt cheap. I originally planned on using it on my lathe and even purchased a L00 backplate for that purpose. But somehow or another the backplate never got machined to fit and the chuck never got un-repurposed. It gets a lot of use. The downside is its a little tall and eats up vertical clearance.

Dan

 

[mcmxi]

Yes. Curtis is awesome at his craft!

He's a good welder too! I've watched him use plasma metal deposition to build up some parts that are undersized and then machine the parts to the right size. My initial thought was how would that repair hold up, and then just last week learned that Yamaha uses plasma-fused sleeveless cylinders in their outboards to save weight in the aluminum block. Turns out that the finish is tougher and more wear resistant than standard steel cylinders.

Most of my machining experience is designing parts that get machined. Some parts go to wire EDM but most are made on a multi-axis CNC of some form or another. I almost bought a Precision Matthews lathe and mill a few years ago when I was working for Ruger and prices were "reasonable". If I start my own firearms company in the next year I can justify the expense.

I like these project threads too.

 

[Nicksacco]

Dan-
Thanking you publicly for all your help with my ole machine! You are the wizard!

My L35 has been involved in about a 3 year restoration (with use in between) and is now in the final stages - being the bucket and related hardware. You can see my various postings as I shared here on OTT.

Here is my thread (below) on this portion of the machine. Once Dan sends me the newly machined parts I'll update this thread with assembly pics.

Remember: Grease is GOOD. Don't let your tractor get to the point where mine was left (to die, I guess).

L35 TLB Restoration - Greasing pins is good - (UPDATE Jan 8)

The last abused section of my TLB restoration is the front loader. Worn pins, worn bushings and totally rusted pins are my nemesis. There's no getting this bucket off any other way than cutting pins - and that I did. And no way to do it easily. Several hours of sawing, blade changing, and strong...

www.orangetractortalks.com

 

[TheOldHokie]

I promised @Henro a better picture of the boring setup:

And here is one showing another use for a three jaw on a milling table. Its not just cylindrical parts.

Dan