• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

welding cat 426 backhoe boom

gusbratz

Well-Known Member
Joined
Dec 8, 2012
Messages
109
Location
PA
spent the day arcing off those patches, they were harder than i expected. looks like they were odd shaped pieces and they just filled in all the openings with weld. so there was no telling what kept them holding on for dear life. i had to arc them into squars then melt them off with my torch. I also got the cracks v'ed out and ready to weld. then i have to figure out where the cheapest place to get cyl rebuild kits is. i need to rebuild all the hydraulid cyls.
 

Attachments

  • 426catremoveingpatches008.jpg
    426catremoveingpatches008.jpg
    128.7 KB · Views: 576
  • 426catremoveingpatches001.jpg
    426catremoveingpatches001.jpg
    142.2 KB · Views: 564
  • 426catremoveingpatches004.jpg
    426catremoveingpatches004.jpg
    141.9 KB · Views: 566
  • 426catremoveingpatches009.jpg
    426catremoveingpatches009.jpg
    136 KB · Views: 577

gusbratz

Well-Known Member
Joined
Dec 8, 2012
Messages
109
Location
PA
had the day off and have been makeing some progress. the more i work and look at it the more cracks i find and grind out. the project is growing:D
 

Attachments

  • 426boomwelding010.jpg
    426boomwelding010.jpg
    133.4 KB · Views: 530
  • 426boomwelding003_zps548fc347.jpg
    426boomwelding003_zps548fc347.jpg
    34.5 KB · Views: 538
  • 426boomwelding005_zpsa7020d3a.jpg
    426boomwelding005_zpsa7020d3a.jpg
    42.7 KB · Views: 552
  • 426boomwelding002.jpg
    426boomwelding002.jpg
    86.6 KB · Views: 524

Mike.580ck

Well-Known Member
Joined
Dec 15, 2012
Messages
49
Location
Kansas
looks pretty good Gusbratz, i am liking the plates to strengthen it , i also am looking to rebuild all the cylinders on my machine and i have been looking i found on Ebay a whole machine cylinder re pack kit for under 300 dollars so that might be the way to go
 

bowen

Senior Member
Joined
Nov 13, 2011
Messages
540
Location
N. GA USA
Occupation
Electrical Panel Builder
I have ordered all my seal kits from Coleman Equipment

http://www.colemanequip.com/

There are several others like Broken Tractor or Eldridge that sell Case parts online.
Coleman seems to have most in stock and cheaper than any local dealer.
They will be genuine Case OEM kits.

On mine all the cylinder part numbers are stamped on the ends on the cylinder. You need this number to select the kits
 

gusbratz

Well-Known Member
Joined
Dec 8, 2012
Messages
109
Location
PA
Finished welding it up yesterday. I welded the round pieces I cut out of the reinforcement plates for the pin bosses over the cracks on the bottom. Did one pass of 1/8” 7018 then one cover pass of 3/16” 7018 on most parts. Hopefully it all holds up. May start rebuilding cyl's tomorrow.
 

Attachments

  • 426blockheater006.jpg
    426blockheater006.jpg
    138.4 KB · Views: 464
  • 426blockheater009.jpg
    426blockheater009.jpg
    136 KB · Views: 449
  • 426blockheater010.jpg
    426blockheater010.jpg
    134.8 KB · Views: 443
  • 426blockheater011.jpg
    426blockheater011.jpg
    138.8 KB · Views: 484

gusbratz

Well-Known Member
Joined
Dec 8, 2012
Messages
109
Location
PA
I finished up welding the boom and got it installed. repacked the boom, swing stabilizer and dipper cyl and have moved on to looking at the stick. I pulled the collar and removed the stick to find more cracks in the end of the dipper. Look at the weld on the inside corner. I don’t understand why anyone would even attempt to repair cracks on a backhoe if that is as good as their welding skills were.
 

Attachments

  • dipperstickcracks004.jpg
    dipperstickcracks004.jpg
    125.3 KB · Views: 463
  • dipperstickcracks002.jpg
    dipperstickcracks002.jpg
    126.4 KB · Views: 375
  • dipperstickcracks001.jpg
    dipperstickcracks001.jpg
    128.3 KB · Views: 366

gusbratz

Well-Known Member
Joined
Dec 8, 2012
Messages
109
Location
PA
some reinforcment that was welded onto the coller to try to stiffen things up i guess.
 

Attachments

  • 426stickwearpads006.jpg
    426stickwearpads006.jpg
    140.8 KB · Views: 346

Nige

Senior Member
Joined
Jun 22, 2011
Messages
38,643
Location
G..G..G..Granville.........!! Fetch your cloth.
Kudos for the job you're doing. It must be a bit daunting removing all those patches never quite sure what you're going to find underneath them. Liking the look of the repairs you've done so far and it was really good to see the pre-heat on the areas you were planning to weld.
 
Top