Base Reassembly(C) Hinge Pin

[JPG]

This thread shows a method to reassemble a Mark V base(Hinge Pin).

BASE REASM HINGE PIN.jpg (510.38 KiB) Viewed 6714 times

The Hinge Pin (and retaining roll pin). Make sure BOTH ends of the roll pin are tapered(Not mushroomed by previous attempts to insert/remove it). File end if necessary.

BASE REASM HINGE START.jpg (281.36 KiB) Viewed 6727 times

Insert the hinge pin through the lower part of the end casting and into the way tube end. When near totally inserted, rotate the pin so the hole in the pin will line up with the hole in the casting when inserted further.

BASE REASM HINGE CLEAN.jpg (236.16 KiB) Viewed 6738 times

Start the roll pin into the hinge pin hole through the hole in the end casting. Before pushing it in all the way, make sure(again) the end of the roll pin is still tapered(not mushroomed). Clean it up with a file if necessary before inserting it further.

BASE REASM HINGE QUIT.jpg (276.9 KiB) Viewed 6708 times

Drive the end of the roll pin slightly into the end casting hole. This will allow easier removal if you need to later. The pin is removed by driving it ALL the way in and through a hole on the OTHER side of the hinge pin bore.



This thread is one of several which illustrate a method for reassembling a Mark V. Please post a reply and inform me of any errors or confusion. They WILL be fixed!

This thread was linked to from https://forum.shopsmith.com/viewtopic.php?t=3807

[supermansrf]

Hey @JPG, I have a question. I'm trying to get the pin that holds the hinge pin in - out. I don't think that it has ever been removed. I just purchased a late 70's model Mark V and its in good to fair shape. Just needs some rust removal and lubed up.

And why does it look like the pin on yours is on the opposite side from mine? Is this a design difference between models? If I'm standing at the operation side of the head stock, the pin is on my right on the other side of the Mark V. Looking at your pictures, it looks like its on the near side of the Mark V. I've tried uploading a photo, but for some reason it won't let me this time.

I've tried everything I can to get it out and it won't budge. I thought that possibly I could just drive it on through, but before doing that I looked and the hole doesn't continue through the casting.

Any help would be greatly appreciated. I feel like an idiot for something so small to be what's holding me up from progressing.

Thanks!

[supermansrf]

Trying to get the photo on this one

IMG_4056 (1).JPG (347.72 KiB) Viewed 6244 times

[dusty]

If you drive the pin through (clear of the shaft), you'll find the pin on the floor. It drops out the bottom of the casting.

[supermansrf]

Wow. That explains why I could see light through the pin but couldn't see a hole. It all makes sense now. I was wondering how I could keep driving it in but couldn't see a hole on the opposite side.

Thank you very much.

[JPG]

I have not a clue why yours is on the opposite side???

Before attempting to drive the pin 'through' verify the hole(in the casting) does indeed go 'all the way through'.

[supermansrf]

Will do. Thank you.

[jsburger]

I have not a clue why yours is on the opposite side???

Before attempting to drive the pin 'through' verify the hole(in the casting) does indeed go 'all the way through'.

When did they quit using the roll pin? The pivot base on my dedicated drill press has the roll pin and the shaft is 3/4". The base came from my original MK V 510 when I converted it to double tilt and Power Pro. The machine was bought new in 1994.

I built a shorty from parts on eBay. That pivot base does not have a roll pin. It has C clips on each end of the shaft on the inside of the pivot arm. Also the shaft is only 1/2".

[JPG]

I have not a clue why yours is on the opposite side??? *****

Before attempting to drive the pin 'through' verify the hole(in the casting) does indeed go 'all the way through'.

***** No longer 'clueless'! I have them both ways.

I think the one I posted above is 'not typical'.

I do not know why/when they vary.

[dusty]

I have not a clue why yours is on the opposite side???

Before attempting to drive the pin 'through' verify the hole(in the casting) does indeed go 'all the way through'.

When did they quit using the roll pin? The pivot base on my dedicated drill press has the roll pin and the shaft is 3/4". The base came from my original MK V 510 when I converted it to double tilt and Power Pro. The machine was bought new in 1994.

I built a shorty from parts on eBay. That pivot base does not have a roll pin. It has C clips on each end of the shaft on the inside of the pivot arm. Also the shaft is only 1/2".

Is this the hole that is being discussed here?

The Through Hole 002 (Large).jpg (59.86 KiB) Viewed 6176 times

If it is, I would sure appreciate a photo of the setup that uses NO ROLL PIN to secure the shaft.