Ford Backhoe Boom Repair

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Tell me what you guys think... Attached Images
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Reply:Side plates look a bit thinner than I might have used, but it might just be an optical illusion. The other plates on the original boom look heavier to me in the picts. I'd have also tapered the plate where it ends on the boom vs the vertical line you used to help limit stresses in one spot. Look at the other plates on the boom like the one directly above it or the plate on the lower boom and how it's tapered to the middle of the boom rather than straight across as you did it.Goofy boom shape makes more sense now then it did in your other thread now that I see it's on an extendahoe.Edit: You posted the other picts that show the thickness better than in the 1st post while I was replyingLast edited by DSW; 01-06-2013 at 07:30 PM..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Hey thanks for the advice. I'll make sure to correct myself the next go around. The plate is 3/8ths thick by 12" wide. The extendboom looked between 1/4" and 3/8ths max.
Reply:I wasn't thinking the boom material, but the thickness of the plate material used other places like at the top of the boom extension. I'd have guessed that at 1/2" - 5/8" from having run an old Ford 555B..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:I appreciate the advice, so now you got me nervous, lol. I felt pretty confident when I was done but now I am praying it holds. I guess time will tell.
Reply:It looks pretty stout. Id be more worried that the rest of the boom is rotted out than you repair failing. But thats just me
Reply:The original didn't have the plates. Assuming your welds are good between the original boom and the pin mount, I don't see too many issues. I'm just used to how we used to use/abuse our machines. 3/8" isn't that bad, it just looked like 1/4" in the 1st picts was more what I was referring to..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Looks good. The thickness Iam a little concerened with IMO.. I understand you removed that thickness of material. Many times in the construction and ag fields they use a special steel according to manufactures specs. When I repair something like this I check to see what was used or replace the part with dealer parts. I know this can not be done all the time. In my experience no mater how tough you make something in this field Someone will test your work on a daily basis to the max..NEVER is it used as intended..a endloader becomes a dozer a backhoe becomes a trackhoe-dragline ect...nice fab and welding tho.Miller 250DX HTP 221 DV AC/DCHenrob O-A Miller 180 MigMiller 150 Inverter   Hobart 10,000 Welder-Generator   Have a good day!!!
Reply:As DSW already said, you should dissipate the stress over as large an area as possible. A straight line concentrates the stress in the smallest possible area.Millermatic 200Hobart Handler 120Victor O/A & Ramco BandsawLincoln 225 ACSnapOn AD HoodMiller XMT304/22AHypertherm Powermax 1650 G3Lincoln Idealarc DC600 w/Extreme 12 VSMiller Digital Elite "Joker"
Reply:Lovetoweld, what machine did you use for that repair?  Amps?  electrode type and size? , how many passes on those weld joints?   Or if you used mig, same questions.... Wire size, equipment used etc.... Thanks a bunch and thanks for posting your project!  Lincoln Power Mig 216Lincoln AC/DC-225/125Miller  625 X-Treme PlasmaMiller 211 Forney 95FI-A 301HF 91110Victor Journeyman O/PMilwaukee DaytonMakita  Baileigh NRA Life Member
Reply:Looks good to me, nice repair job."The reason we are here is that we are not all there"SA 200Idealarc TM 300 300MM 200MM 25130a SpoolgunPrecision Tig 375Invertec V350 ProSC-32 CS 12 Wire FeederOxweld/Purox O/AArcAirHypertherm Powermax 85LN25
Reply:I agree with DSW on the point loading isuue, other thatn that, I believe it'll hold till it breaks again!6 Miller Big Blue 600 Air Paks2 Miller 400D6 Lincoln LN-25's4 Miller Xtreme 12VS2 Miller Dimension 812 4 Climax BW-3000Z bore welders Hypertherm 65 and 85Bug-O Track BugPair of Welpers
Reply:The rest of the arm will break before that repair fails.
Reply:Used dual shield .045 - 21 volts 3xx wire speed, Co2 mix gas. Single pass 5/16- 3/8ths
Reply:Thanks for the pics and post. How did you go about making sure everything was in the right place?
Reply:Nice repair and good job getting the center line of the pin bore back in the right location for everything to work. I would also agree with the other guys in that the only thing I would do different is taper the vertical edge of the plate so you are not welding straight across the grain structure of the boom. Other than that though nice work.Good Luck and Never Give UpAWS MemberLincoln Idealarc 250 AC/DCHobart Beta Mig 251Hypertherm Powermax 45Lincoln WeldanPower D10 250 ProMilwaukee PortabandEllis BandsawMiller AEAD 200LE
Reply:Main thing I would do different is NOT weld crossways on that boom, just let that plate end un-welded.    Also don't be afraid to make your holes bigger in your plate where you plug welded.  Looks good from here though.  I figured it was an x-hoe from the last post as it didn't look anything like my 555 standard hoe.  I think it's hoe is about the same except for the stick with the slider on it.Last edited by cd19; 01-08-2013 at 09:44 AM.
Reply:I think that's a 655 in the picts, so I believe it's one step larger than the "triple nickles"..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Originally Posted by DSWI think that's a 655 in the picts, so I believe it's one step larger than the "triple nickles".
Reply:@ Jamesyarbrough. They have two of these machines on site. Luckily I took measurements from the other backhoe in order to ensure straightness. I took measurements off both machines and replicated them. After cutting the plates I measured off the other pin that makes the arm move In and out. Then I put one inch tacks on everything. Re connected the bucket and ran it full open and full close. I made sure there was enough space and clearance around the plates. Then welded up.