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D2-5U13753 - master pins - please check my understanding

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6 years 7 months ago #178309 by d2gary
Replied by d2gary on topic Home made sprocket press
Here's what the neighbor and I came up with.
Used the nut off the sprocket and turned down the flats, welded a piece of tube to it. 1/2 inch plate with a grade 8 nut tack welded to it and welded to the tube. Outer tube just fits over the inner and contacts the sprocket. There's an inch of travel for the outer tube to push on the sprocket
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6 years 7 months ago #178317 by neil
Looks good Gary. I was about to do the same then realized that I could use my 17t puller bar with some stacked nuts for the same purpose that you're using your larger tube. I bought a nut from Fastenal and perquisited an offcut from my guy which I'll weld together on the weekend. I also already had the 3/4 x 13" Grade 8 bolt I used for installing the steering hubs so I should be good to go. I can also use the puller bar either manually or with the push-pull ram to remove the sprocket. Next thing on the list is an arrangement to pull the plugs from the master pins. I've been busy drilling larger and larger holes in the brake anchor shaft because it is STUCK in there. The previous owner must have friction welded it in place because it's not coming out. I have a couple of cans of freeze spray coming to hopefully shrink it enough to move. I could have left it like that but couldn't bear the though of having to pull the final if I had an issue requiring removal of the brake anchor (plus I don't like nuts and bolts that don't undo....)

Nut for end of sprocket shaft with a piece of gear grade 1/2 with the 3/4 hole:



Puller bar that I'll stack off the sprocket with 3/4 nuts stacked on a couple of 1/2-13 bolts, and then sit the hollow ram on top of:


Cheers,
Neil

Pittsford, NY
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6 years 7 months ago #178318 by neil
Also enquired about some new rail links, bushings, etc. to extend the new 30-link chains to 32 links and then put them on the 5U instead of the 3J. Idea is that I won't have to grind anything down if it's all new. Of course, none of these parts are available new from Cat so it's off to Dana I go...

Cheers,
Neil

Pittsford, NY

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6 years 7 months ago #178323 by d2gary

Looks good Gary. I was about to do the same then realized that I could use my 17t puller bar with some stacked nuts for the same purpose that you're using your larger tube. I bought a nut from Fastenal and perquisited an offcut from my guy which I'll weld together on the weekend. I also already had the 3/4 x 13" Grade 8 bolt I used for installing the steering hubs so I should be good to go. I can also use the puller bar either manually or with the push-pull ram to remove the sprocket. Next thing on the list is an arrangement to pull the plugs from the master pins. I've been busy drilling larger and larger holes in the brake anchor shaft because it is STUCK in there. The previous owner must have friction welded it in place because it's not coming out. I have a couple of cans of freeze spray coming to hopefully shrink it enough to move. I could have left it like that but couldn't bear the though of having to pull the final if I had an issue requiring removal of the brake anchor (plus I don't like nuts and bolts that don't undo....)

Nut for end of sprocket shaft with a piece of gear grade 1/2 with the 3/4 hole:



Puller bar that I'll stack off the sprocket with 3/4 nuts stacked on a couple of 1/2-13 bolts, and then sit the hollow ram on top of:


I guess there really is more than one way to skin a CAT
Those adapters look good.
My 5j brake shafts were really stuck also but mine weren't stuck in the case they were stuck on the break linkage.
If you hold your tongue just right and all the stars line up you can get all the pins out of the linkage and remove the break band. I was able to heat and cool the piece on the brake shaft. It took a lot of heat and several cycles but I finally got it. Might be worth a try

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6 years 7 months ago #178336 by drujinin
Replied by drujinin on topic Very Nice!

Here's what the neighbor and I came up with.
Used the nut off the sprocket and turned down the flats, welded a piece of tube to it. 1/2 inch plate with a grade 8 nut tack welded to it and welded to the tube. Outer tube just fits over the inner and contacts the sprocket. There's an inch of travel for the outer tube to push on the sprocket


After seeing these two works of Art, I won't even post another photo of mine! There is a photo of it somewhere here already?

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6 years 7 months ago #178361 by neil
Gary's is definitely the piece of art - mine is just a nut and a plate with a hole in it, much like my fine self : )
I did try multiple heating strategies on that brake anchor shaft (the one that's retained with a small plate / lock on the outside). What's in there now is not original because it has a hex head on the outside so I also did try "undoing it" as if it were a bolt. I don't think it is because as far as I can tell, the diameter going into the case is no larger. In any case, it doesn't undo so I'm slowing working my way up the drill bit sizes. Made it to 3/8 with my hand drill and those 12" black oxide Irwin bits - getting pretty good at feed rate ; ) Have a 7/16 and 1/2. After that I'm not sure what I'll do as 1/2 is the largest that Irwin make in that length. I've been drilling from the inside end because I cut the shaft to remove the anchor lever, which helpfully left a 1" piece on the inside end that I can use to get my alignment set on the 4 1/2" piece that is on the outer side.

Cheers,
Neil

Pittsford, NY

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6 years 7 months ago #178366 by d2gary
Thanks for the compliments. My final product would have functioned the same but once my neighbor gets involved the finished product is usually a lot prettier. His nickname is Marcus meticulous and he has the nice lathe. I just asked for a flat shoulder to weld the tube to and he took off with the pieces and came back with this beauty. I did however come up with the design and painted it.

Neil don't know how comfortable you are with a cutting torch but usually once you have a hole all the way through you can blast the shaft out. The case will absorb the heat and the shaft will heat faster. If your careful you can blow out the shaft with no damage to the case. I've done this on various things in the past with good success

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6 years 7 months ago #178377 by neil
Pretty comfortable Gary and I did consider it - the long piece is 4.5" long so I'll get it to the 1/2 dia. which is all my drill will take and then heat it, cool it to hopefully shrink some, then also hit it with some freeze spray and see what happens. I'm definitely going to go straight to cutting the short piece out as I know it will easily blow through. I'll be interested to see if I can detect any "glue" inside it. I'll have my guy make up a new shaft a thou or so smaller dia. Nominally 3/4 but I suspect shrunk a bit now as it's been got at before.

Cheers,
Neil

Pittsford, NY

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6 years 7 months ago #178379 by ccjersey
0Neil,
I am not familiar with the shaft/pin you are working on, but if its in a blind hole, you might be able to use hydraulic force to extract it once you get a hole all the way through.

Heavy grease, bread, wet paper towels etc is packed in and then a driver that fits the hole tight is started on top of the packing and hit with a hammer. There are some Youtube videos circulating lately that show people doing it.

Alternatively you might tap it and install a grease fitting and pressurize it that way.

D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time:D

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6 years 7 months ago #178384 by STEPHEN

Also enquired about some new rail links, bushings, etc. to extend the new 30-link chains to 32 links and then put them on the 5U instead of the 3J. Idea is that I won't have to grind anything down if it's all new. Of course, none of these parts are available new from Cat so it's off to Dana I go...


I think I have a few spare links, well used. If you can use them let me know

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