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KRAKMT 
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Joined: 21 May 2010
Location: MT
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 Topic: 715 B
Posted: 06 Jun 2010 at 2:54pm |
I think I got my photo resized I will give it a try. Still a little large for the screen. Working on putting the old hoe back together. Have replaced filters and fluids. But the shuttle shift appears warn out, as she has no movement. I got it from a good friend's dad's estate. 
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KRAKMT
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Joined: 21 May 2010
Location: MT
Points: 99
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Posted: 07 Jun 2010 at 2:02pm |
Does anyone know the paint code for Allis Chalmers Industrial equipment Yellow? Will try to paint up parts as I go along.
K
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
Points: 41608
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Posted: 07 Jun 2010 at 9:59pm |
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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Kipn
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Joined: 12 Sep 2009
Location: Tewksbury, Ma
Points: 800
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Posted: 08 Jun 2010 at 9:56am |
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There are several paint codes for Allis yellow. As far as I can tell, nobody bothered to write down what code was used for what years. Somebody suggested they used what ever supplier was cheapest at the time. I mixed a gallon of what I thought looked good/right.
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1961 H3
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Calvin Schmidt
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Joined: 11 Sep 2009
Location: Ontario Can.
Points: 4525
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Posted: 08 Jun 2010 at 10:46am |
Here is my modified farm version with extend-a-hoe. 
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Nothing is impossible if it is properly financed
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KRAKMT
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Joined: 21 May 2010
Location: MT
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Posted: 22 May 2011 at 9:26pm |
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Pulled the trans/shuttle shift and am having a rebuild kit put in.
When I pulled the torque converter the flex plate was broke in a 1/2 dozen pieces(explains the rattle) and the torque converter looks like someone took a grinder to the mounting hole brackets.
The front fingers look like it was not mounted to the shuttle shift right and are ground down some.
Any suggestions on torque converter rebuild companies?
I notice the flex plate was stamped CAT.
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
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Posted: 23 May 2011 at 8:07am |
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believe CAT now has controlling ownership of Perkins
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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KRAKMT
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Joined: 21 May 2010
Location: MT
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Posted: 17 Sep 2011 at 9:40pm |
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My 715B lives- took it down to get the mail this afternoon!
It has taken me awhile but I finally replaced the torque converter, pump and rebuilt the shuttle- and it works! Prior owner must have stacked the pump because the shuttle looked good but I still replaced the clutches. Converter and pumper were trashed.
If I was to do it again, heaven forbid, I think I would cut out the rear tranny/engine mount and retrofit in a bolt in brackets. I mention this for the few people that have posted and the apparent common repair need. With the mounts as they are welded to the frame the shuttle/bell housing can only slide back a few inches. Makes sliding the tranny/shuttle/torqueconverter/bellhouseing damn difficult.
I noticed a front cylinder leaking-that will be next. I also noticed a leak out the bottom of the pump- does anyone have a picture of what the frequently mentioned additional pump support bracket looks like? so I can see if I have one. If not any idea where to get one?
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darrel in ND
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Joined: 22 Nov 2009
Location: Hebron, ND
Points: 8636
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Posted: 18 Sep 2011 at 8:17am |
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cool project, KRAK. What part of MT you from, if you don't mind my asking? Darrel
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Dnoym N. S. Can.
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Joined: 03 Oct 2009
Points: 544
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Posted: 18 Sep 2011 at 8:17am |
http://paintref.com/cgi-bin/colorcodedisplay.cgi?manuf=Allis%20Chalmers they change a lot of the codes since back then if you need more help let me know B:-) Dnoym
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KRAKMT
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Joined: 21 May 2010
Location: MT
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Posted: 18 Sep 2011 at 8:42am |
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Just north of Billings but I grew up in ND. Spent many years digging trenches by hand- probably the main reason for owning a backhoe.
K
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KRAKMT
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Posted: 18 Sep 2011 at 8:43am |
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Dnoyn -great thanks- getting closer to needing a bit o paint.
K
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
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Posted: 18 Sep 2011 at 8:53am |
I will see if i can get picture of the one I made , unsure what the factory used . I used the chrome tongue of a old trailer hitch . It runs from bellhousing up to rear of hyd pump. and fastens onto fitting there with a clamp. 2 bolts into bellhousing and that U clamp to pump keeps it ridgid.
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
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Posted: 03 Jun 2013 at 5:54pm |
a b c
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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KRAKMT
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Joined: 21 May 2010
Location: MT
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Posted: 06 Jun 2020 at 7:28am |
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Hey hydraulic experts.
Spent some time and money on the 715 this month but have some deferred maintenance that I would like to defer a little longer. The swing cylinders on the backhoe are leaking pretty badly. I have several other tasks to do before tackling them.
Several years ago I replaced the canister hydraulic housing filter with a screw on filter and replumbed from the pump back to the controls.
I am wondering if I can put a valve in the line after the tee intersection that diverts flow to the fel?
This would shut off flow to backhoe when not in use?
Suggestion for ball valve?
Thanks for the help.
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
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Posted: 07 Jun 2020 at 12:54pm |
They make a hydraulic Push / Pull 2 port diverter valve for separation had one on my HD4 for hoe or bucket , on my 715 B there was one in hoe system as they ran a hammer also on the hoe .
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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KRAKMT
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Joined: 21 May 2010
Location: MT
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Posted: 14 Jun 2020 at 7:30am |
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I blew a hose as I was lifting out a pit I made to roast a whole pig.
Which then caused me to pull both swing cylinders.
Hopefully this week I can get the cylinders rebuilt and reinstalled.
I may still install a valve to isolate the hoe since I got everything apart.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
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Posted: 14 Jun 2020 at 7:44am |
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Why shut off fluid flow? Does not accomplish anything if not using functions of the hoe.
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KRAKMT
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Posted: 16 Jun 2020 at 10:06pm |
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I was hoping to shut off leakage.
I took the two swing cylinders in for rebuild.
If anyone has tips, tricks or recommendations for bushings for the swing pins and the rod ends, I could use the help.
I will try a machine shop but open to options.
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Coke-in-MN
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Posted: 21 Jun 2020 at 8:02pm |
the cylinders are trunion mounted with the mount about centered on cylinder barrel , they do have a bushing kit for these as I replaced mine when I replaced other bushings on the hoe . Again Minn-Par should have the parts
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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david a
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Joined: 29 Jan 2012
Location: almond
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Posted: 09 Jul 2020 at 7:15pm |
https://www.joseph.com ; I got my torque converter from this web site. just been down this road. You might want to replace the front pump and forward piston. It might be cracked. I have the repair manual if you need info
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Ages Cat
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Joined: 12 Sep 2009
Location: Hutchinson, MN
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Posted: 09 Jul 2020 at 10:20pm |
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Regarding AC yellow, I was told the paint used on late AC machines was national school bus yellow. I am using a Hentzen products on our AC industrial machines. This information came from Cook Sales & Service in Missouri.
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Curt Anderson
HD3, HD5B, HD6AG,HD6B dozer, I-400,615, 616,620,720,ACP25 lift truck, 1956 D Grader, AC 540 loader, AC #84 plow, Simplicity tractors, Agco MT225, Agco 2025,
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Coke-in-MN
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Posted: 10 Jul 2020 at 12:04am |
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your link to Joseph doesn't seem to work
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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david a
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Posted: 10 Jul 2020 at 4:33am |
https://www.joseph.com
Edited by david a - 10 Jul 2020 at 4:34am
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KRAKMT
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Posted: 11 Jul 2020 at 11:47am |
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I just happened to have used Joseph and did replace pump plate and converter.
They were cheapest, shipped fast and good to work with.
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KRAKMT
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Posted: 11 Jul 2020 at 11:50am |
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I took hoe swing cylinders in to hydraulic shop.
Estimate $1800 per cylinder for repairs.
One has a broken piston, the trunnions are egg shaped, the eyes are egg shaped.
Any one have a spare piston?
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KRAKMT
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Posted: 11 Jul 2020 at 12:09pm |
Anyone know if case made a model that was a direct copy of the 715b? At least as it applies to the swing cylinders? https://www.brokentractor.com/c/case-backhoe/hydraulic-cylinder/swing-cylinder-parts/
Edited by KRAKMT - 11 Jul 2020 at 12:12pm
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DMiller
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Posted: 11 Jul 2020 at 2:21pm |
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Do not know if Case did but the Fiat Hitachi versions seemed a close second upgrade.
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Chris Dame
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Posted: 12 Apr 2023 at 9:58am |
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Looking for valve assembly for 715D part #1002958 if anyone could help
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