Bobcat Control Valve leaking and how to reseal. Can you spot the problem?
Vložit
- čas přidán 17. 10. 2021
- Bobcat control valve leaking at the spool seals, but there is another issue with the valve. Can you spot the problem? The first 10 people to spot the problem and the symptoms it would cause will win a prize starting with $100 to the first person with the answer. Please email answers to bobcatissues@gmail.com and not in the comments. Only subscribers are eligible to win! Good luck.
Contact us for questions or concerns at
www.4tetradgroup.com
To schedule a consultation: www.4tetradgroup.com/consulta...
www.4tetradgroup.com
www.tetradcycles.com
/ tetradgroupllc
/ tetradcycles
Check out our new podcast where we discuss Bobcat and other compact construction equipment.
spotifyanchor-web.app.link/e/...
Congratulations to the winners! Customer bought a machine at auction, he called and said the tilt would just drop randomly, after looking at the valve I noticed the lift and tilt spools were swapped. The lift spool has the ports for the float option and because it was in the tilt part of the valve the tilt was actually going into float or "dropping".
Amazon Affiliate links:
GoPro Hero 10 amzn.to/3xi32or
Hydraulic Valve Seal Kit amzn.to/3DMLO5l
My awesome lime green gloves! amzn.to/3r4fgjJ
#bobcatrepair #howididit #bobcat - Auta a dopravní prostředky
Thanks for this video.
When I tried your method, I did successfully get the balls on the spring in the holes but my channel locks were too wide to let me put the cap on.
What worked for me was to use a hose clamp. I had a narrow one and I could use that to crank the balls into the hole and then I pushed the hose clamp with the cap until I could undo the clasp completely and withdraw it.
I just replaced the seals, plug and O-Ring on my lift spool and the seals on my tilt spool successfully thanks to you and your videos. I really appreciate what you are doing sir and I will definitely hit you up if I need any extra assistance with my 853. My channel lock pliers were a little to thick to use your trick with to get the detent balls in. We had to find one of the darn balls about 3-4 times in a messy garage but we finally got it done. We ended up making a tool by bending the tips of some cheap needle nose pliers a little and then using a hot glue gun to hold a couple of small nuts parallel at the width of the cylinder. Worked perfectly and I thought that I would pass the idea along. Thanks again!
This is such a great channel very informative .You walk us through all of the repairs and this is very helpful to guys like us who work on our own equipment.Give this time and I see this channel exploding with veiwers
I don't know the answer but I really do enjoying watching and learning from the videos. You do a great job of explaining everything. Thank you!
Great video. My bobcat tilt has been leaking for years and every time I go to fix it I don't do it because it looks like a nightmare. I'm a 25+ year ag tech and I didn't even want to deal with it. After watching your video I tackled it and it wasn't bad at all. Thank you so much for the help!
I've already replaced the seals in the upper spool valve without removing all the stuff in the way and the arms down. Not easy. I also removed the cover in the back and the spring shot out. Now bucket will curl up, but not down. Wish I had have seen this video before I started. Thanks, Keep them coming.
Thanks, great educational video. The spring ball installation sucked. I ended up using a zip tie to bring the balls into the shaft on the spring. Yup about 4 times to get the balls and spring to cooperate. Thanks again...
I have an old Melroe m500,but i like watching you awesome videos in case i upgrade. I did just get rid of my beeper for a flip phone.
Thanks so much, completed this on my 763 yesterday. Was going to pull the valve until I saw your video.
Slicker than snot!!!! here is the bad news, on my 753G 01 no way to get the spools out with out loosening the entire valve body and tipping it forward to about 30 degrees so there was enough clearance to get the extra long spool valves on my unit. the longest spool was 14" long OD..... I had to remove the fuel hose fill top and fold the fuel fill hose down underneath the hydraulic valve body..... thank you so much for these vid's.....
Terrifically instructive video. My tilt spool seal is leaking on my 863. I am so thankful to this video, that am inspired to make a video of my fix to complement this video.
Great video! Just what I needed. Thanks
Good day kind sir. I just wanted to say thank you so so so so much for taking your time to upload this video/edit/record.ive watched this probably 20 times within the last 24 hours because I had a leaking valve spool on a 763g I just bought last week. I've never worked on a valve body that big before so I was very intimated by the job. This video helped me so much also the actuator 1 you posted helped alot as well. Unfortunately the only problem I came across was all the videos online for spool valve seal replacement are for mechanical valve body's. My 763 is a g series so it doesn't have rods and the detent ball and spring. I ended up having to remove all but 2 lines om the valve body, the 2 bolts holding it to the frame, and then had to turn it just enough because no matter what I did I could not get enough clearance to un screw the actuators 3/16's screws. I do wish you had a video on that before I did it because it was gruesome. Or is there a way to do the valve seals on electric over hydro valve body without disconnecting everything ? I even went to harbor freight and bought every style 3/16s hex bit/wrench/socket to try an get actuators out and I couldn't. I spent more time trying to find a way to get them out then I did disconnecting entire valve body.
Sorry for the long text but perhaps it may help someone in the future with a g series.
Thank you for asking this question… I’m also wondering the same thing as mine is a 773 g series with actuators..
Matt, I have a 2001 763G with 550 hrs on it...YUP. I have hydro pissing out the center of the cap for the spool. Are you saying that when you replaced the seals that it was not as easy as it looked for HowIDidit?
Thanks for spending the time making the videos I have a 843 wish it was this easy to work on you can hardly see the valve from the front or the engine compartment not fun at all, my problem turned out to be a chunk of plastic or old hose holding the relief valve open
Love the video man! , I run a small concrete company and we have a 2000 873… I’ll be watching all your 873 videos for sure haha definitely made me feel better about this project.
I have a 751 bobcat. Bought used and worn out. Watching your videos help me stop leaks and The way you explain things really help me know my bobcat more on top of tackling out any problems I've had with it. Thank you very very much. You make it look so easy.
Great video I need to do this on an 873 soon and this is a huge help.
Wow
Thank you for this great step by step video, I’ll be doing this tomorrow,,, I know all the answers to the problem,,,,
Thank you so much for the videos. I recently bought a 863 and had leaking hydraulic fluid from this same location. Going to tackle it this weekend and also watched your video on the duetz timing belt change.
Thanks for you video. I was able to replace the four seals and found the one to be bad. It was leaking hydraulic fluid like crazy. It is back working again without leaking.
Great job. My tractor has broken the slots on the drive shaft, both sides.
You make it look so easy. A repair like that would take me a couple of days!
Thank you for this information. Really appreciate it.
Good stuff... I am sure this will doing this someday on my 863 I just picked up!
Just what I needed!
I completed changing out the seals and Orings. I had spool locks on my valve and my fuse box was attached to the seat plate but was able to move enough to access. BTW I left arms down and it worked, but better if you can raise. Thanks for the video, it definitely helped me through the project!
So glad the info helped!
Same here. Doing them now. Did you remove the spool locks or just power them temporarily to remove the spook?
Excellent explanation. Thank you.
Glad it was helpful!
Thank you for this viedo, had to do the same job on the same machine , great help , . My hat off to you sir
I used a power tool to start those screws......sorry dad. Man if that don't hit home for me. Awesome video man
Great video, very good info!
Great presentation thanks James
Very welcome
Thanks! that was a pretty clear video, ie your hand blocking, but I get it now i know how much crap should just come out of the way.
Yea, I found that out on 873, leaked like a sieve. You are right on that tool, you can do it without it, wish I had, lot easier.
obrigada pelo tempo que tirou para nos ensinar e passar seu conhecimento baita professor grande abraço
Muchas gracias por su apoyo. 👍👍
Great Video !! Thanks !!
Hey bro don't b downing yourself you're the best the way it looks
Nice job on video looks like it will be a 3hr job doing it your way much easier!!
This is great info
Obrigado pelas dicas grande abraço 🇧🇷
Can you do a video on how to set up the steering linkages. On same machine. Love your channel
Just found your channel and I'm enjoying it. I built my own detent ball tool with a hole saw, an angle grinder and a bolt for the hinge. It was some years ago and the pliers/tool was out of stock. It's great that you are sharing your knowledge with people who do their own repairs. I think you mentioned using a vacuum cleaner to hold back hyd. oil. I used that trick for years and was able to save the company the price of a number of Terrazzo floors. Do you use an adjustable bleeder valve in your adapter?
Thank you for the video gracias...
When I did my 773G I pulled off the right side tires and wheels removed the side covers and did the whole works from the side other than the cross bar and the tilt pedal link arm. 1 hr and 45 minutes later I was sweeping the shop. Done deal. Parts were 22 bucks at bobcat.
Good job brother God bless
Since it didn't have the float detent springs I believe besides leaking the float function was inop.
Thanks!
Awesome video very helpful! I replaced the seals on the tilt an lift spool a year ago on my 863. However now my pedal will stick in float mode.. I also replaced the spring an bb's as you did in this video. Any tips or advice on this issue? Any ideas would be greatly appreciated!
Emailed my diagnosis
Thanks twice!
Thank you so much for the support
Great stuff priceless 😮
Great video!! Having just made the tool to install the spring and balls, I'm about ready to
attack my 853. I'm curious to know how many hours were on your machine when you
replaced the seals. Today will be disassembly and prep work while waiting for the
parts kit to arrive. Thank you so much.
Excelent video, did you get the 10 emails? Im piecing back together an 873 f series and have the tandem pump running for the first time, I have a leak and this video helped alot, Thanks
The second seal on each valve, which direction do they need to be placed- the thick side in first or does it go out. You never said and it was hard to tell in the video. These are great videos. Please keep them going.
@18:31
I have a 751 with a Puegot motor do I have to pull the motor to change the seals? Thanks for your help in advance. I have learned a ton about my Bobcat through your CZcams videos.
Great video I appreciate the time you take to do these things. I was able to fix my 763 f series I bought it used and I had to start fixing all the leaks. One issue I cannot fix is the auxiliary backhoe hydraulics sometimes but I can get them to work but it requires manipulating though wires. My biggest problem is that after buying the shop manuals parts manuals I cannot determine which solenoids control can you show me how to override the solenoids for the backhoe operation
I'm not sure bypassing the controller would be a good idea because the solenoid is controlled by PWM with 10VDC max. You could try to run 12V to female coupler solenoid (Right side of control valve) but it might burn it up after a few hours.
@@tetradgroup I was not aware that it was a 12-volt DC powered solenoid. Coming from the PWM. Once I find out where that item is and what the acronym means. I will get back to you. Thank you for that insight
I’m working on a t190 the fuel fill neck is directly behind the lift spool. Do you have any tips or tricks for removing the spool without disconnecting the control valve? Thanks!
Load check valves will not hold pressure with the spool removed. They are upstream of the spool.
Thank you so much for this video, you're a life saver. I had a leak on the front end of the lift spool of my 763. The leak was coming out of the rubber boot. I pulled my lift spool out and could only find a seal on the front end and not the back. Is there supposed to be only one seal in my machine or could I be missing it somewhere inside the valve body? Again, thanks so much.
763 should have a seal on both sides
HA HA !!! i just did this job a little over a year ago on my 773. i wish i had seen this video then. it was that bad but it wasnt as easy as you made it look. did you get the 10 emails yet? another great video. thanks.
Also part number for the pliers ?
Hey just wanna say your vids are awesome always help me a ton. I was wondering why is my hydraulic pressure switch behind my hydraulic canister leaking on my bobcat t595? Thanks
I have a 2001 763. The fuee box is mounted on the plate below the seat. Is there a quick disconnect for this or am I SOL and leave in place to do this job?
I noticed my seal kit came with different color gaskets for my Bobcat 753 F series. The kit came with 2 black, 2 blue, and 2 orange seals. Where do the black and orange seals go? Also, do the auxiliary valves have a spool that needs to be rebuilt also?
That's the spool seal needs the black o rings on the back side where you put it in or just in the front?
Would these be the same thing that causes bucket droop on older units
I've got an S185 that would leak from the control valve body where the lift spool sits. I replaced the seals, but now it only lifts about halfway (or less) when under load... What'd I mess up?..
Is it the same process for the 843?
Hello
Love you
Your video tutorials
I have S100 Bobcat loader ,was working fantastic until last week when decided that the auxiliary pipe won’t respond when trying to use grab bucket , the bucket opens but won’t close and to close I have to release the pressure by loosen one the ram pipe and that way it will close by pushing down by hand then Tightening the pipe back it will open but it won’t close any idea what could cause this ?
Would like to see a video of a hydraulic flow test being done on a mini excavator
Good sir
I assume that I can do a similar repair to fix the detent on my 743's aux. hydraulic output. I think the float function is also bad so I will do all the spools and both detents. Thanks!
Awesome video, thanks for being a lifesaver. I have a bobcat 773 and it is under strain and lift and curl won't work unless I pull up the red release knob. Then no strain and it works as it should. I have no idea what that issue is. My leak is coming from a small weep hole on the bottom of the lock block. Please help!
Let's schedule an appointment for this one at www.4tetradgroup.com
Spool seals leaking from the rear,ever had the lower spool shaft,2 ball bearing in cup bind when tightened,i am having that issue?
Hey i have a late 90s early 2000s 863 bobcat and at first my lift quit working but when i would operate peddle for the lift the mast would tilt i have done some research and asked a few people all the can tell me is valves now would the detent ball and spring be causing this or is it deeper in the valve body
Great video. Tilt spool not coming out . Spool moves 3/8”. It’s a 773. Maybe a broken seal preventing it to slide ? Maybe lightly tap out with hammer ?
Your machine may have a spool lock solenoid on the front of the valve body
Great video. I have a 753, do I need to extract the hydro fluid from the reservoir tank before removing the spool valves.
Not necessarily, however oil will slowly leak from valve while the spools are out.
We used to refit and tighten the front boot ,seal retainers and seal. before refitting the spool, that way you don't need to worry about the seal when you refit the spool because it can't go anywhere 😉
I got a bobcat 863 that is leaking the tilt valve, are thoose the same seals or do they need different ones?
great videos my man, you are a great help since the dealership here in Iceland are quite the dissapointment
Should be the same seals
I have a bobcat S 70, that the lift arms and curl bucket go up but under a load, they will not come back down. Something internally is failing. They will come down though unloaded. Any ideas on where to start looking? What state are you in?
thank u
i have 2 bobcat s250 in iran and i see this an do it
Where did u get the ball bearing pliers from ??? Nice video I rebuild a 642b and took the whole valve out and rebuild ...
Bobcat
I have a 2018 S70 that is making a whinny noise from the lift pedal. Some times is not there it’s only when I use the lift pedal a few times. Some times when I’m lowering it it just keeps going down even after I deactivate the pedal. Do you think it could be the seals on the lift spool?
Excellent explained details by detail how to get it done
Thank you!
I have a leaking spool valve on a T250 with actuators. Do you pull the valve or do the seals in the machine? If in the machine, how in the world do you get to the backside???
first, thank you for the most informative video about this, that i have been able to find!! Can you tell me the PN of the kit you purchased, that had the spring and two balls with it? I dont see them in the amazon kit in the link. Thank you very much, in advance
These can be ordered from Bobcat or Allskidsteers. Spring part number is 6592107 and ball part number is 6592105.
Can you show or explain how to get the plastic plug with the tiny o ring out? I’m beyond frustrated doing a bobcat s185. Thanks
I'll check in the morning and see if I have a spool I am demonstrate with. I use a small ball end Allen wrench, heat end with lighter and push into plastic, let cool and pull out.
Hi i have a Bobcat 863 i have a leak in my lift spool it started as a small amount of oil and now i have to put a quart of oil in it just to use it for a few hrs ,it is set up a bit different hard lines in the way can you please if you can any tips ? my symptom is as i float down or go up sometimes it jerks and bounces a bit like its starving for oil Thank you my man
is there any way you could help me figure out where the right side drive motor case drain hose connects to? I have watched your video in hopes to be able to see it, but no luck. I bought a used machine that was half torn apart, i bought the service manual and parts catalogue and neither tell me where the case drain hose connects to. The parts diagram makes it seem like it connects to the T fitting on the hydraulic valve where the bottom manual lift release valve hose goes into. Thank you!
Great video! I have a Bobcat 743 and the spool valve that tilts the bucket sticks and is hard to push the pedal forward and back. I removed everything on both sides of the valve but the valve will not come out and appears stuck. I think I need to remove the whole control valve. Your thoughts?
It is possible there is a piece of debris in one of the relief cuts in the spool. Hope this helps.
For personalized assistance, please visit www.4tetradgroup.com
Here's an update, just removed the front section of my Hydraulic Valve where the rubber boots are located, Truly had a hard time removing the (4) 3/16 allen bolts. Tomorrow I will tackle the rear section of the valve bodies. I did not use a battery operated ratchet drill. I did it with standard allens set. Plan on purchasing a ratchet, it was a killer. I do not believe no one ever did any type of maintenance on the used Bobcat 753. One question, I received a bill of sale and was told that the unit was own by another person but seldom used it. (True or not) I am trying to find a way to receive more information on the unit. I am unable to get any VIN information. ANY SUGGESTIONS? Where can I find the vin anyway?
Hola, ize todo lo de su video para cambiar los empaques azules, pero en mi Bobcat están al revés, con el pie derecho maneja la pala, y con el pie izquierdo sube los brazos, al final tengo problemas , no pude ajustar el pedal para subir los brazos, tengo que precionar mucho con el talón del pie para subir los brazos, algo me quedo mal,. Gracias buen día
Awesome videos!! Question, the amazon link to the seals only has 2 of the blue seals and no new spring and balls. Are the front two seals the exact same as the rear ones? (6683274 I think?) also I think the ball part number is 6592105 and the spring is 6592107.... I think.?.
My manual release red knob is in tact. How do I remove the red knob? Does it just unscrew from the rod?
Yes it will unscrew
You didn’t say anything different about the front seals so I am assuming the same concept applies with the ridge side of the seal being away from the retainer (opposite direction as the rear seals but same concept)?
Can you externally test a Control Valve for a Bobcat. We already made up a guage with a T fitting to check each line. I'm wondering if we bought a small pump with a reservoir could we test it outside of the Bobcat? I assume all the return lines would just combine to the reservoir, use the guage on the port we are testing and plug the rest. What do you think?
I have never tried to test outside machine. It really need to be in machine and all lines hooked up to properly test everything. What symptoms do have or what are you trying to test?
What causes a bobcat to have jerky controls only on one side?
my lift arms creep up slowly by itself, what can cause this on a 863 bobcat basic model, i checked all of the solenoids, wondering if the lower stem valve has dirt in it and cause it to jam or the lower spool needs to be resealed. i replaced hoses that had leaks, no crossed hoses, i checked and all good.
Could be several things, are you sure the spool is centering back to neutral and all the linkage is moving freely? Maybe disconnect the linkage from the spool and see if it still does it. I could be an issue aux circuit bleeding into the lift side but check linkage first.
very good video, iam haveing a problem with the lift, tilt works good, lift jerks does not move slow, you can push on the pedel and then all of a sudden it jumps, there is no slow lift, after watching , i cant imagine its the 2 seals that you put in. any help would be appreciated. thank you
The seals would not cause that issue, you can schedule an appointment at our website www.4tetradgroup.com and we can try and figure out the problem.
i have a bobcat 743 and the tilt spool valve when start the machine will leak and trout out the seal any suggestion please thanks...
Sounds like it is time for a spool seal.
For more personalized assistance, please visit www.4tetradgroup.com/consultations