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- เผยแพร่เมื่อ 3 มิ.ย. 2022
- Bobcat drive belt and tensioner repair. If your machine lost all hydraulics and coding for low charge pressure then your drive belt may have failed. Sometimes the tensioner bearings fail and will lock up and cause the drive belt to break.
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22 years old on a new family farm. We have a T595, you've enabled me to fix so many different things. Thank you so much, please never stop making content!
Thank you so helpful, even after 37 years of repairing rental equipment I’m never to proud to look for advice. Thanks again
Your videos and video quality including the detail where the tensioner will be difficult to remove within the engine compartment makes this video outstanding quality mate
Thank you for this detailed video. You covered everything needed for me to change out the belt, bearing, and tensioner arm. My T590 is quiet, and performing great after these repairs. Please keep this level of content coming when you are able!
Man you saved me hundreds of dollars thanks for the video!
Thanks, We could not find a Mechanic that was free to get to us & you enabled my team to do this repair
Hey thank you all the way from Jamaica for this video, it was a great help.. i have a 2016, s650 and the tensioner wheel was jammed cooking the belt. Local dealer had the parts and i followed your instructions on the repairs.. bigup! And nuff respect
Im a field tech for a rental company i absolotuley love your content it has helped me with so many different things thanks for making it
You’ve provided so much support that I haven’t traded my Bobcat for CAT yet.
Thank you so much for this great video. It was so easy to install once I watched the video. I replaced the idler pulley and got the whole thing back together in a little over one hour. I’m located in Japan. Although parts are available there’s not to many service providers who have experience working on these machines. You saved me a bunch of money and downtime!!
Comedy and how to fix stuff, I love it, click, click, you are the best thank you, please please do not stop doing these
Man thanks so much.Everything you said was spot on and just straight to the point and simple...for the most part 😅.We work at a car and eighteen wheeler shop but don't do stuff like this normally.Took us like two hours but er literally learned from this video so I feel it was pretty good.Also the belt got stuck behind the harmonic balancer looking pulley so we had to bump her to get it free!Thanks so much,our new bosses appreciated it so much and we got to look good 😂
Great video! It’s awesome to be able to see how that belt system is put together. I would hate to be paying for the repair on that machine. I would also like to see what’s inside the main pump if you ever have one apart.
Thank you!!!! Help me out fix my own tension belt on my t590 and saved $$$ on calling the mechanic on Saturday
Great video. Thanks for walking through it.
Wow, your videos are fantastic and timely!!!
Fighting with one right now something is going on with the tension spring not exactly on right. Inwhich I did not torque either......I think your video will be a blessing to get me back up and going...fingers crossed.
Thank you , great video just what I was looking for . I have a 2000 753 G that under load moving snow would make a high pitch squeal sound .
Thank You so much for all your stellar videos! You have saved me so much time, $ & aggravation. I really appreciate what you do for all of us that watch these. Your videos are always well explained and it is immensely helpful.
Very helpful. We replaced the tensioner wheel to follow up on this video. Thanks
Extremely helpful. Thank you!
Great vid. Detailed and concise.
Thank you so much for your help, great, good, big, amazing help. God bless you.
Great video very informative
Great job man, thanks so much 👍for your great explanation.
Great video bud we have a 2018 t650 that chirps when operating used to do ot under heavy stress but has started doing it with light loads video helped alot now just hope it works lol 😆
This is great and helpful video, thank you so much
Awesome and detailed video
Absolutely best how to.. thank you so much...
Great video thanks man
Thanks , great video
Amazing video
Thanks for the video boss
You're so informative
Glad you think so!
Thank you
Thank You
Thanks!
Thanks
I have a T190. Just gave me a Hyd pressure shutdown warning and shut down. Removing the cover, I see the belt is incredibly loose. I'll use your info to see if I can tension it. Thanks!
They sure pour them into these machines. Nice on site location!
Thanks.
I got a 2015 t770 that will need a input seal on hydraulic pump sometime. Wondering what the best way to go about that? Even a video on pulling the engine and pump assembly would be nice!
Its the wiring harness that keeps the bolt from coming out from the tensioner...T 590 ..T 550....S 550......2014 - 2019? Great video!
Where is you're video on breakdown of how Hydraulic Charge pressure works and charge pumps ?
@11:02, Very important step to make sure that bracket rotates completely where it's touching that 'pendulum' part, and pull it down a hair past that. If working with mechanism inside the Loader, it might be good to wear gloves, otherwise you might slice your pinky open on the battery box tray on the bottom if these wrenches slip during that rat trap maneuver. Note: Most torque wrenches are not "Bi-Directional" where you can get a torque read in both directions. When you are trying to put the 40 lbs of pressure, your garden variety Torque wrench will not give you the 'click' you are waiting for. You will need a Harbor Freight Pittsburg torque wrench that is "reversable" or something better if you want to make sure it's torqued correctly. I found the best thing to do is just like shown here, make sure that bracket rotates where it can't rotate any more and the belt is tight. Otherwise the belt will start slipping, it will make a loud clicking/rattling noise when you strain the hydraulics like when turning and you will have to re-tighten. If you get the belt on right, your machine should feel 'peppy', like it has got some power back.
Hi yes I did remove all the fuses the sockets did feel tight. I will unplug the aux controller tomorrow.Sorry what do you mean see if gateway comes back online. The machines controllers seem to be working I don’t have an external tool on it. The codes just pop up. This happens erratically but once it does it continues for a while.
Great video. I have a question. My S550 is very similar to this setup. However, my tensioner appears to be frozen/stuck to the hollow shaft. I loosen the mounting/pivot bolt and the tensioner will barely rotate even with a breaker bar. Is this common? I am considering heating up the hollow shaft, but am concerned. Any ideas?
How do you change the mounting pivot tube the tensioner slides on that is mounted to the side of the engine? Mine is just like this but I can't figure out how to remove it?
I really like your teaching videos. One suggestion, when filming and if you can, make sure the bright light it to the camera man’s back and not in front of him. Thanks for taking the time to post all of your videos, they help me a lot. GOD bless!
Thanks for the comment, I do struggle with the sun, I'm using a tripod and stands. I try to use filters but it's to dark sometimes when trying to show an up close shot. Maybe I just need another camera, still trying to figure it out.
Click, click goes the sound of a well calibrated torque arm!!! I laugh just about every time you do that, it is amusing for sure. Thanks for showing how to do that!! Not too difficult, but I now know WHY you did this video in a pulled motor. Way easier to show this process!! Again thanks!!
Thank you
Nice video
How do you change the stud that tensioner bracket goes over
Stud I'm referring to is pressed in to block
Weld nut to end and use all thread to push shaft out. If engine is out of machine then just use slide hammer.
what brand bearings are in pulleys?
Just bought a 1970 610. I can see now its dying. There like an inch of play in my belt. Trying to figure how to tighten
Im a beginner in this field of work I have about 2 years on Bobcat and Genie scissor and telehandler maintenance and repair. You have helped me tremendously. Thank you very much. I am beginning to understand the Bobcats. I had an issue with a 2017 T650 it has erratic trouble codes( M4404 "aux controller no communication)and (H7404 gateway controller no communication main controller no communication. I have check all the fuses all good, and have unpluged and check the wires and plugs from the controllers that route behind the drivers seat. I lifted the cab and checked the wires and plugs Any thoughts.
Did you actually remove the fuses and make sure thay are tight in the sockets?
Unplug aux controller and see if gateway comes online. You might need a new auxiliary controller.
The stud u mentioned where the spring goes over how do you replace that
You can use an air chisel to get it out and freeze with nitrogen to reinstall if the engine is still in the machine.
On my 763 we find that we cannot keep tension on the belt even with a new tensioner. There were two belt lengths for 763's one is too short and the other is too long. We drilled and tapped a new hole to make it work. However, after just a few minutes we lose tension. You've seen many more of these than we have do you think we would have a chance of mounting the new style tensioner to the old style of housing? It looks like a single threaded hole and a roll pin. The adjustment and tensioning look much more forgiving. I think we could buy one from salvage.
You should have a spring tensioner. Are you sure the you are getting the spring engaged correctly?
Do a video on replacing the tensioner shaft/ stud.
Not yet but thanks for the idea!
I'm in the battle of replacing it now. Any advice
I have s510 upon start up have a rattle/grinding noise in belt area, haven’t broke it down yet, but could bad tensioner be the culprit?
I would think the tensioner pulley bearings have failed.
Thank you so much for all the help I'm doing a job like that how much do I charge for that
Hour labor plus parts
Thanks again for your help I changed the belt yesterday the guy called me today saying the machine it's making a noise where the belt goes any idea
You think the tensioner might be bad
謝謝！
Thank you so much for the support.
Have you ever had any of the bolts loosen during normal operation and cause a squeaking? sometimes under heavy/ med operation i'll lose all hydraulic function and but the motor revs will stay the same, then when i back off and let it idle down they'll come back, but it'll do this infrequently. think its a slipping belt? I'm going to dismantle it this week and try to figure it out using these videos, but I was just wondering if theres anything in particular I should be looking for while I'm in there other than a bad pulley bearing or bad belt? 2015 t750 kubota engine btw. Thanks!
Nvm. I used your video and found the uhmw bushing was destroyed and allowing a lot of play under heavy load. Ordered new parts. Thanks for the video! My bushing and spring/arm are one piece though. And the whole thing has two bolts holding it into the motor. Different than the two I saw you replace.
Brady, What is your opinion on the belt drive Bobcat used for a long time (what like 90s-2020?, until the R series) vs direct drive they used to use (my 843 for example), and pretty much any other manufacturer? When the R-series marketing came out I remember a video where Bobcat acted like they re-invented the wheel by using direct drive instead of a belt. Which made me laugh since no one else (that I can think of) used(s) a belt and Bobcat itself used to have direct drive. Just curious what your thoughts are. Keep the awesome videos coming!
When the universal joint failed on a friend's 843 it sheared off the shaft. Not a fun repair either. The belt allowed a transverse engine mount to simplify maintenance. The original M series like my 610 used a variable belt drive.
That big stud that’s in the motor… how do you replace it??
Its pressed in, with engine out, I weld a nut to the end and use a slide hammer.
Very good detail
Thank you very informative video but on my machine I'm fighting the bolt actually hitting the frame and I can't pull it any farther to clear the frame
What model machine? I've never had one that would not come out.
@@tetradgroup 2016 t870 same tensioner as what you had in the video
@@haroldwilliamcoy7979 the T870 should have 2 bolts on top of tensioner and the whole assembly will come out.
It was the same tensioner design you showed is looked online and saw two variants and this tensioner wasn't very common I just didn't have clearance and was ultimately unable to change the pulley today but found I'll have to change the whole arm when I get time
I have s590 bs4 i have issues tensioner pully worn out within 500hrs run what is the issue..??
Did you replace the tensioner arm? A worn arm could allow the pully to try and ride at an angle.
Great video, as always, thank you. I kinda cringed when you held the tensioner up by finger tightening that bolt, and removed the belt. I was thinking, this thing is gonna snap down right on his fingers! LOL Glad it didn't. I believe and trust your skills.......But from my general experience, that just did not LOOK right. I guessing it must have a wedge factor in it versus a smooth travel that would require more torque on the bolt.
Haha, no you're exactly right I'm always scared to put my fingers near that tensioner. It does wedge itself in there pretty tightly but again that would definitely leave a mark if it came loose.
If a drive belt wants to run off the side of the drive pulley would that mean it’s not tensioned enough? Or does it mean the the tensioner wheel is no good?
Tensioner wheel and or tensioner arm
You seem to be the guy to ask I have a 2006 T250 and I have a oil leak behind the hydraulic drive motor pulley is there a seal behind that pulley that I can replace
Yes there is a seal behind the pulley.
@@tetradgroup is it a hard seal to replace without pulling the hydraulic pump I have the track off and I can get to the pulley I’m going to get a puller tomorrow and get the pulley off and I have found all your videos very helpful
@@michaelweber8186 getting the pulley off is the hard part. Once the pulley is off just remove snap ring and pry seal out.
@@tetradgroup thank You your really good on this bobcat equipment
I got the seal out and found the Bering is starting to fail the dealership had all the parts and didn’t seamed concerned about the Bering starting to get sloppy I see a couple of snap rings on the Bering hopefully I get it changed out tomorrow morning
My bobcat starts and gives a message that the hydraulic change pressure in shutdown. I checked the fluid level and the belt and it is all fine. When I checked the filtre it was inexistent. I bought this machine like that and I'm trying to fix it. Also the opsi is low when it starts then it shuts down. What else should I check ? Thanks
If you are sure the main drive belt is good then I would suspect the charge pump itself has failed.
@tetradgroup yes I have checked the drivebelt. I'm changing the charge pump sensor. If that doesn't fix it then I will buy the charge pump.
If the adjustment lock bolt ( the one with the spacer ) breaks off in the block .........what are the options ? Thank you
I honestly don't know, if it broke flush I would weld a nut to it and hopefully it will back out.
@@tetradgroup thanks for the quick reply. Yea the thread part of the bolt broke off in the block. I would try and drill it and use a extractor but as you know if the engine is still in the chassis this is a @#$%&. Not even sure its possible. I watched your other video where you torqued the tension to 40 ft lbs and it almost looked like the spring itself is around that tension. Wasn't much to get 40 ft lbs.......I just noticed it .....I have a feeling its been like this for a while. Works fine and I can live with the rattle of the bracket for now.......whats your thoughts ?
@@bcummings2187 after the initial torque the bracket usually doesn't even touch the arm in most cases so spring tension should be fine.
@@tetradgroup ok....thanks again for the quick replys .....ill keep an eye on it ....I guess the older the belt gets and stretches the more of an issue it will become but until then 🤞 haha
i need some help on a bobcat kubota engine codes please thank you i will send you more info about any help will Appreciate...
How can I help you?
Helpful to see this whole process, but just tell us the actual torque specs please. Not a watch my other video for all the info... Would rather be in the cab working, than working in the engine compartment, but that's preferred to watching TH-cam
Thanks!
Thanks!
Thank you so much for the support!