Bobcat hydraulic cylinder weld repair DIY

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Bobcat hydraulic cylinders with friction welded fittings can break and leak hydraulic oil. The damaged fitting can be cut off and a new fitting welded on. I've seen fittings broken on excavator cylinders and loader cylinders.
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13 июл 2024

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Комментарии : 64

@billwhite9782 3 года назад

Great Video , Thanks for taking the time to share . Im 71 years old and still learning every day .

@stevea6722 2 месяца назад

Just found this, good info. Got a Bobcat skid steer bucket tilt cylinder with a broken fitting similar to that. Time to fix it! Thanx!

@wrench-weld-build6545 Год назад

Only suggestion I would make is to go with a fitting that is designed to be welded. But...if your not having issues and it works....it works. Would also suggest tig welding if possible. I know this is not feasible in the field but it would be the best option. But look man...GOOD JOB....AND THE GUYS THAT GET IT DONE ARE THE ONES THAT ACTUALLY LEARN WHAT THEY CAN AND CANT DO.

@shadrazac5395 3 года назад

About to trash the cylinder. Thought of first checking RU-vid. Thanks a lot. Great video

@VaughanGuitars Год назад

Glad to see you took the cylinder apart. I have a forklift II bought used, The tilt cylinder someone tried to repair like your video but did it in place with oil in the cylinder. The weld did not hold and who ever did the repair continued to try to overlap welds. The weld when heated kept drawing oil into the repair and .... ya it will not hold with oil contamination. Thank for great video of how to do it right.

@tetradgroup Год назад

Thanks for sharing

@ThriftyGarage 2 года назад

Sweet Repair!

@tunintunin3417 Год назад

I don’t have a bobcat, I probably wont have one ever… I’m here from the other end of the world.

@nadovidaich2364 3 года назад

Nice job!

@CaptBill69 3 года назад

Nice fix n save. Reviewing such clips for ideas on welding a hollow hydraulic rod"s U joint end on an old1980 era Kubota L720 backhoe swing arm hydraulic cylinder. While not same task, I thought your clip was inspiring.

@jamiebuckley1769 3 месяца назад

great job on the cylinder repair. im doing the same thing as you just did hense why im watching your video. thumbs up thx 4 sharing.

@SteveDoesEverything 3 года назад

Nice clean job. Been wanting a cordless cutoff wheel. Tired of dragging my extension cord out.

@tetradgroup 3 года назад

Thank you, I'm very impressed with the Milwaukee angle grinders, very rarely do I pull out the corded ones.

@davevanden1 3 года назад

you do nice work

@firewoodsolutions 3 года назад

Great how to and you inspire me to wear safety glasses

@tetradgroup 3 года назад

And don't forget to wear your mask!

@firewoodsolutions 3 года назад

@@tetradgroup chin diaper

@drycreek3204 Год назад

I enjoy your video content! I have a Bobcat 709 backhoe that wasn't used much & it has some rust on the rods for the arm & bucket. I am planning on cleaning them up with 400 & 600 grit emery cloth. If the rods are pitted too deep, what would you recommend? Thanks!

@dgb5820 Год назад

I’m the other guy brody and love your videos

@sebastiancontreras9809 2 года назад

Nice video thks! One question can be welded Also with a inverter welder? Wich type of welding rod is recomendable

@lpztv2 Год назад

That’s for the video ! I just saved $500 doing it myself.

@mukundhan.c6383 2 года назад

Hi ! Can u please tell me what type of welding processes are used to weld the different components of the cylinder, if possible ? Thank you.

@esauseven 4 месяца назад

My Kubota FEL sprung a leak on the fitting where the hex meets the body of the fitting. I’m wondering if the ring where the hex meets the fitting body could be welded. I’m curious why the hex is there. Is there a rubber o-ring inside that could create debris when welded? Great video.

@thebaycuddy 2 года назад

What size seals and where can I buy those to rebuild the cylinders? I have a bobcat t590

@russellgnuse 2 года назад

What oil do you use for hydraulic bobcat oil or can you use a 46aw oil

@josemedrano3836 Год назад

Man very common yes my dealer always make me buy new cylinders

@patriciareynolds2729 11 месяцев назад

ED here, good video, you good welder if the thin threaded fitting holds. my trouble in tenn. is getting komatsu/metric hose ends for foreign equipment . we have cut off metric hoses and reused them . where can u get komatsu hose ends apart from the dealer? yes i understand manufacturers making fittings where only they have them at double the prices!

@ProfessionalHomeowner 2 года назад

Hey bud, thanks for posting this video. what spanner wrench did you use to get the gland nut off? I've done this repair on other cylinders with a pipe wrench but the shoulder is too small. I'm forced to use the spanner wrench. great video Thanks for your help.

@tetradgroup 2 года назад

amzn.to/3onCMW6 this is my favorite spanner for bobcat cylinders.

@benzun9600 11 месяцев назад

thanks for the video. I had the same issue took it to a shop and got it fixed. How do I put it back on? The cylinder will not fit and needs to be pulled out a little to connect back? thanks

@tetradgroup 11 месяцев назад

Leave the lines are disconnected, might have to twist the rod a little as you pull it out

@DieselMate Год назад

great work mate! Do you have a link for the tool you used to remove the cylinder end cap?

@tetradgroup Год назад

This is the tool I use, works for about 90% of the Bobcat cylinders I do. amzn.to/40XCczj

@DieselMate Год назад

Brilliant mate thanks! Ill order one. Looking forward to more uploads from you. Wealth of knowledge 🏴󠁧󠁢󠁳󠁣󠁴󠁿

@mattanthony4886 2 года назад

I was told this is a replaceable insert. What is the nut/wrench end to this fitting?

@tetradgroup 2 года назад

It's just a plug sealed by o-ring. The fitting is not replaceable.

@frankmayo1410 2 года назад

this is exactly what happen to my blade cylinder today! broke the connection. Where do I find the part to weld onto the cylinder housing? My Bobcat 334 2004 excavator,

@tetradgroup 2 года назад

Any hydraulic shop will have it

@jonesjones94 3 года назад

can you do this on the thinner wall cylinders without warping the cylinder? also the hole you drilled is it the original size hole?

@tetradgroup 3 года назад

It's possible the cylinder may warp slightly but usually not a big problem. The drill but I used was just a clean out any debris in the original size whole.

@fleaniswerkhardt4647 3 года назад

@@tetradgroup Is there any use in putting a wet rag around the cylinder to keep it cool as you weld it?

@pwilliamf Год назад

We had the exact same thing happen to our Bobcat excavator thumb cylinder. I saw you welded the fitting right to the cylinder. I was wondering if your opposed to a threaded bung so if it happens again it would be an easy swap in the field, or after you weld the fittings it almost never is a repeat issue? Thanks for the video! My replacement cylinder was $800!

@tetradgroup Год назад

Only problem with a bung on some cylinders is once the fitting is installed it will stick out to far and be even more susceptible to damage. I like the fitting to be as low profile as possible.

@pwilliamf Год назад

@@tetradgroup I appreciate the advice, that makes sense! Thanks again, subscribing.

@justinbrown1861 2 года назад

About what should a job like this cost a person ?

@flaviamaria6623 Год назад

Good evening, dear friends, I have a problem pulling my hair out. E55z is opening the shell, it takes up to 3 days to happen. I already changed the joystick but it didn't solve it, I looked at the command slice, spool, spring, and nothing solved it. Thanks in advance. I'm from Brazil

@steveo3589 2 года назад

Shit I just bought a new thumb cylinder for my E 35 $719.00 but now I will make the other one bullet proof like this , thank you .

@joelogan7432 Год назад

My fittings need replaced, are you close to Ohio?

@PrintEngineering 2 года назад

Why not just weld the original fitting? Unless it has stainless threads

@stevenburris7238 2 года назад

What size fitting did you use

@tetradgroup 2 года назад

1/4 NPT x #6 JIC 90

@cyridm 10 месяцев назад

@@tetradgroup😮

@TheZigZiggy 3 года назад

Since those fittings are threaded, why not drill and tap those holes and thread those in with red loctite?

@tetradgroup 3 года назад

The barrel is to thin to support a threaded connection unfortunately and if the connection goes past the barrel wall the piston can hit it when fully extended in either direction.

@TheZigZiggy 3 года назад

Ah, good to know. If those connections are prone to breaking or wearing out then weld a nut on it so they can be easily changed in the future.

@ericybarra4975 3 года назад

Are the fittings just a jic 90?

@jonathanking5566 3 месяца назад

Do you know the part # of the 90 you welded on?

@pilarcortez3707 2 года назад

How much do you charge for a job like that I've to do one today great video by the way

@tetradgroup 2 года назад

Thanks, I charge $150 plus parts if I reseal.

@HopesandDiesel Год назад

Whats the cost of this repair?

@tetradgroup Год назад

Around $150

@bunkvids3861 3 года назад

👀

@deanl2427 2 года назад

PLEASE PLEASE PLEASE, make sure you warn your viewers about the danger of using CHLORINATED brake cleaner prior to welding. It creates phosgene gas which WILL kill you. I would recommend using acetone instead, so you can be sure.