Fix your Hydro Gear yourself ! - DIY hydraulic pump rebuild - $ave Money!
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- เผยแพร่เมื่อ 30 ต.ค. 2021
- Did your hydro gear stop working on your machine / mower? Rob shows on how easy it is to disassemble and inspect / repair your hydraulic pump on your own without having to pay for a new one.
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Thank you so much, brother! Saved about $1,200 in 2 hours! Boss gave me a chance to mess with it before ordering them... Not only did these methods work, I'm no longer a maintenance crew guy, but shadowing in the shop instead. So simple, but boss was blown away... Waaaay better job, waaaay better pay. All because of you, good sir! Don't change a thing! Thank you!
That's great to hear. Congrats buddy.
two thumbs up. not only do you know what your talking about but your an excellent teacher. not like some of the hack mechanics here on TH-cam that have 30,000, 70, 000 and more subscribers that have no clue what they are doing.
Thank you very much for the support. Really appreciate it a lot.
Great vid! I searched forever to find a comprehensive vid on these pumps. Thanks very much.
Hey thanks for taking the time to make this video awesome Ray from Cleveland Ohio now I can save some money instead of getting ripped off
Great Job thank u for taking time to show
Omg dude , you are a life saver, thank you so much for taking the time to show us what needs to be done
Excellent tutorial. Thanks a bunch
Thank you for sharing!
What a great video thank you so much for taking your time and and explaining it so well
Thank you! You are an excellent teacher, you made the job so easy!
Very helpful video. Thanks alot
Thanks for the help. I hope I find the issue
Very good video. Thanks!
Thanks for that tear down and explanation! I hate not knowing how things like that work. I also hate going to the a mechanic and paying $1500 for something I could fix myself!
Thanks for checking out the video I really appreciate your support.
Again, an excellent video. In the very beginning you were mentioning to be careful because there is a spring and ball in there. You showed the location of the spring, but not the location of the little ball. I have no clue where it fell out of unless it goes in the hole underneath the spring lol
Excellent video
Excellent job Thank You!
Super detail information brother thanks for so valuable information
Great video! Thank you!
Awsome explenation video... After this im going to try and repair mine... Thanks again!
Thanks really appreciate it good video...
Rob awesome vid.....find something to clean your camera lense maybe some of those eye glasses packets that have a moist towelette that smells like rubbing alcohol. Very informative, you described the whole process very well. Thank you, very much.
Wow impresionante gracias muy buen video
well i have watched a few of these video's on rebuilding these pumps yours are easy to understand very easy to follow hope i find the problem thanks much !!!
EXCELENT VIDEO. VERY SIMPLE AND EASY TO FOLLOW VIDEO. THANKS A LOT. I HAVE ALREADY SUBSCRIBED.
YOU ROCK! RayRay in south central Florida in the house ..my left hydro gear barley works>.
hey man i have to say, you are really good at explaining things. a lot of people can not do that well.
Thanks a lot for stopping by and checking out the video. I really appreciate the comment. Thank you for the support.
Great explanation on how these pumps come apart; I have a Snapper ZT18440 KH with these pumps; one of mine is lightly leaking at that pivot shaft seal that the control arm links on. Glad to know when I do rebuild this, nothing is going to spring apart in my face as I am disassembling it:-)
Your the best I've seen. Tks
great video bro i learned a lot but next time clean the camera lens
too much oil on it
Enjoyed looking at this video....having trouble with my scag tiger cat leaking hydraulic fluid
Great video. My old mower isn't worth a new unit. I'll try to rebuild it. Thanks for posting this.
Update: It turns out the problem was I left the parking brake on. The mower ran fine for about ten minutes, then the left drive faded, and started leaking oil. Releasing the parking brake fixed the problem. I wish all my problems were solved so easily!
thank you
thank you so much!
Thanks
Very good teacher 🔥
Great video thanks for sharing your knowledge. I have a question. Is the pump supposed to suck the fluid out of the reservoir or it just flow by gravity?
Damn good video !!! Great job !!
Have any videos on the wheel drive motors?
Lots of good info on your video. Thanks!
I actually plan on doing one very soon I have a couple wheel motors that I have to rebuild
Thanks for the info, it really isnt worth buying a new one like you said... i opened mine a few years back and just needed to replace the lower bearings... we put on new seals with the kit you mentioned and still running
Awesome video man
I just finished pulling the pumps on 500 series Toro. Left side was weak. Found thrust bearing on that side destroyed. This is the second unit that was weak on left side and had to replace thrust bearing.
Hopefully this one the wheel motor is not too damaged.
You are awesome thanks
Great explanation of the pump Rob. I already tore mine apart. It was bypassing when engaged. The face of the piston block and the face of the valve block were both gouged bad with the some washing on them. Waiting on my rebuild kit. Thanks for the video.
So glad that I could help you out and I really appreciate you tuning in. Good luck with the rebuild.
@kevin Nelson
How did the rebuild go??
Ty so much bro someone had the thing in it wrong
what about the seals do they go bad ? Great job
Excellent video with invaluable information! If my Scagg commercial zero turn is running slower than it used to, could that be an issue in the gearbox?
Do you have any leaks on the pump at all? Have you done all the regular tune-ups and hydraulic changes? Fuel filter air filter all that stuff? How about the hydro belt is it tight loose? If the belt is slipping that could cause you to lose some speed as well.
Thanks man 😊
Bro best video i have learned alot because your video!!Thanks,but man its blurry.
sorry for the blurry video. i got a new phone now but my old phone had so many cracks in screen and grease got in it. thank you for the support man i appreciate it
@@youtubestar for sure, my hydro gear started whinning loud and quit going forward trying to get it figured out, your video is helping some. It's a snapper snapper mower i inherited from my dad last year who died in a bad motorcycle accident, so i'm trying to keep it running for him
This was an awesome video. Are most pumps designed like this?
Pretty much most hydro pumps have the same type of working mechanisms some will be larger than others but for the most part they all operate the same but they will change from application to application slightly
what would likely cause a chatter or shuddering on one side..back off and it stops..ease into it slowly and its ok.. but if under a good load like starting out up a steep hill it sometimes may do it.. seems not as often if warm..& throttle is open full and dont push stick forward too fast.. good amount of hours on them hydros.. hustler FastTrak superduty..60" 2008 hydros replaced once prior.. hoping maybe simple fix and not have to go too deep or need much parts etc.. love the mower..does such a nice job and gets under branches etc that our x-ones are too tall for.. thought about buying it from my boss...
sounds like a flow/ pressure issue. when you are applying light throttle you dont need much pressure to get moving but sounds like when you are going fast or uphill when that max pressure is required you are getting your shudder. could also be internal too but start easy and do a hydro flush
@@youtubestarhey thank you for getting back to me! and so soon even! thats awesome I appreciate it!
it does it if throttle is low as well.. maybe more so if I'm not easy with the stick.
a "hydro flush"? all I have ever done is change fluid and filter on them. I assume that it's more than just that.?
@@youtubestar by "flush" do you mean more than just a fluid and filter change? can you elaborate on this by chance?
Great Video. I have Ferris IS3000Z that the left side works perfect forward but has a lot less torque in reverse, sometime not enough to back up on a hill. Would it be the pump, motor or a relief valve? I don't know how to trouble shoot. Thanks
Thank you! Got a rebuild kit coming. I’m missing a couple ball bearings though. New sub.👍
Great video thanks Rob! Do you have a video on how to remove the Hydro pump from the mower?
Which mower do you have?
@@youtubestar Scag tiger cub
this this is one of the best videos I've seen on these pumps I rebuilt a hydro gear wheel motor that connects to one a pump like this and now when I push forward on the lever after reinstalling it it goes backwards we'll spends backwards the other side I push forward on the liver it goes forward and it's all plumbed correctly so I don't know if it's the motor worn out or if it's just an adjustment but that's what I'm looking for solution to that but thank you for this great video on the pump I think I'm going to check out my pumps to see if they're okay
Sounds to me like you have the wrong wheel motor. Did you take the wheel motor apart and work on it or did you replace it with another one? Also what about your hydraulic lines are they put back in the right spot you didn't mix them up did you?
I think I remember that if you put the top cover (with the round gears ) on the wrong way it will operate reverse.
Thank you so much Bruh, you saved me some $$$$$
Thanks Rob, Great info! Where do we send the Windex to you for that poor foggy camera lens lol.. Also wouldn't doubt that some of these internal parts upon wearing would be the partial cause for the whine noise that Hydro's are notorious for. I also wonder why these typically use 15 W50 Synthetic Oil and not Hydro Oil. Would Hydro Oil be less likely to Cavitate than Motor Oil? Cheers!
Will the screw on the head with the hole in it ever leak? Mine appears to be leaking but after your video may be a seal. Thanks!
which oil do you feel is best to run in this system?
Not my exact unit, but worth watching. I've got 2 Dixon ZTR 4516K with independent pumps and a couple of them make a grinding noise and lose pressure after being ran at full pressure for a minute or more. I suspect it's low fluid but I'm worried the grinding sound has caused damage.
any input is welcome. I wont be doing that job for a few months so if you know about that, please respond.
The grinding noise you are hearing are you certain it's coming from the hydraulic motors? Sometimes the noise can bounce around in those engines and it could be coming from somewhere else a bad bearing and a pulley or something but you may think it's coming from the hydraulic motor. If it is coming from the motor is it just one side? And last but not least if it's still running and moving forward and backward I would not run it anymore you might be able to save the motor if it's still moving then your shaft is still intact and for the most part the other parts are replaceable. Could just be a bearing going bad inside sometimes if something really simple but the simple things will create huge damage if you don't address them immediately. Maybe start by doing a hydraulic fluid change check the fluid see if there's any metal fragments in there. Shoot me a picture of your hydraulic motor so I can see what type you have.
Great information! Thank you. If everything on the machine seems to work just fine but there is a leak between the two halves of the pump housing, do you think its probably just the gasket or is there something else that might have caused that? The exmark mower works fine but leaks a lot of oil and is probably 15 years old.
I would definitely check the gasket in between the housing. Was it ever service before or taken apart? Are you certain it's coming from the split in the middle? Another thing you can try is completely clean the unit off and dry it then sprinkle some baby powder all over it and let it sit and you will see exactly the area the leak is coming from in the baby powder. But more than likely you are probably having a gasket issue keep me posted would love to know how you make out.
Also are you certain that your shaft seal is in good condition inside? If your shaft seal is bad and you're getting blow by you're going to get a leak. I'm not sure what unit you have but there is different seals inside of these pumps around the shaft around the Piston etc all of these need to be looked over and if you're not sure if they are good or not then rule of thumb is while you have it open just replace them.
@@youtubestar thanks for the reply. It is an exmark with a Hydro-Gear pump. I power washed all the crap off of it then drove it around for a while. Both pumps are leaking where it breaks apart. A pretty big leak. I ordered the gasket kits and will pull once they arrive. I will inspect once its apart. The kit should contain all the seals etc so using your video I will see what I can do. Thanks again.
@@MostWantedFireworks Are you 100% sure it's leaking from the middle and not from the bypass valve above?
I have a 2007 Exmark Lazer with Hydro-Gear pumps that are leaking from the bypass valves.One side leaks more than the other.Just hot the valves yesterday.
Hi mate,
Good videos!
How to put neutral manualy on great dane zero turn mower?
should be a little lever/pin to pull under the mower
What does the tiny spring do on the top ?
I just have a question , before put everything back together do We have to fill the case with oil ?
I looked to many videos around here ,yours is one of the top very well explained , but nobody mention nothing about the refill process . Thanks
absolutely. Very good question. I would certainly pour some hydro fluid in the case prior to closing it up so you do not have a dry start.
@@youtubestar My respect ! thanks for your time , you just gained a new subscriber!
Can I rotate top of pump to change witch side it goes on?
i have a sunstraum 15 in my bolens and i lose pressure, in forward but reverse is fine any idea where to check. great video
I would start with the linkage. On the side of your hydro the linkage will be connected and it's usually held on by a set screw of some sort. When you push the arm forward and backward you will see that linkage moving make sure that it is going forward a full cycle it's possible that the set screw may have came loose and it's not pushing it forward all the way. This has happened to me on numerous occasions. If that doesn't work Circle back around to me and I'll give you some tips on what to do next
If you saw in my video how the swash plate operates sounds like it's depressing in reverse completely but when you put it in forward it doesn't sound like it's depressing the Pistons all the way to build the proper pressure for the forward motion. And if you set screw came loose then it's not turning the swash plate far enough if that makes any sense.
And when you are checking your linkage if there's any bearings or pivotal points that are defective in the linkage that would affect this also make sure there's nothing loose in the linkage.
How did you get to the seal? Mine is leaking
The company I work for has a Dixon zt mower
Do you have a source for parts or replacement pumps that work on that machine
Hey Rob, can you tell us how to get the rebuild kit for the pump you were working on?
There's many sites online I think actually depending on the part you can find some of the parts on amazon. Which part in particular are you looking for maybe I can help track it down?
I'm salvaging the hydraulic wheel drives from a Toro 54" Zero turn to build a remote control snow blower. I was wondering if you would know if these drives would have the torque to push a 42"(Haban) snow blower attachment off a garden tractor or would I end up burning them out? I plan on using a 20 HP engine, salvaging a snow mobile track and suspension that I will spit in half to create a track drive.
you may see some lack of torque. The reason being.... even though the Toro Zero turn has significant weight, its on wheels which make it a lot easier for the hydros to operate on something that rolls. If you are going to be using these to physically push a mower blade with a lot of snow in front of it, I don't see the gears holding up very long. I replace these hydro gears daily because one of the main reasons they fail is because of the machines pushing or pulling too much weight that the shaft snaps. Your custom blower sounds really cool and PLEASE come back and show me pics or video when its done. Sounds like something id love to create myself.
@@youtubestar I already built one using a Craftsman steerable track drive, an arduino micro controller, Flysky 10 channel RC controller and designed my own circuit board. I use 12-24V servos and 20Kg hobby servos. One issue I ran into is backing up. Without lifting the blower housing off the ground it scrapes the snow like a plow and gets stuck. I also find it a little slow for my liking. It's meant as a walk behind and of course an operator can push down on the handles to lift the front end or twist it to get it unstuck.
Maybe I need to do go a different rout for the drive then. I don't want to build something that will break down after the first snow fall and have to go back to the drawing board. I think I will go the extra mile and use hydraulic wheel motors instead. Princess Auto in Canada(where I'm from) has them. Just need to do some homework on what to use. I'm not very hydraulic experienced.
BTW, Thanks for the prompt reply. I'd be more then happy to share my experience and knowledge I've gained building the first one. Slapping motors and drives to a frame is the easy part. Programming it is another learning curve altogether. But I'm getting the hang of it. The new one will also have a raspberry Pi computer for a little AI. I found some local programmers to help me with it.
I just thought of something. Since the snow blower doesn't need to go as fast as a lawnmower (7 mph) . If I made a 1:2 speed reduction so that it only goes max 3.5 mph would that not increase it's torque and prevent breakdown?
Wondering if you would know what would be causing one side of my mower to be pulling as normal and the other side just barely wanting to pull,in a straight line I have to push the right lever all the way down and the left lever about half to keep it tracking straight then on a hill it won’t pull itself up with the right lever?
Me to, that's why I'm watching vids. No luck yet
Rob, what would you expect to find from a hydro that starts out working 100% and in 15-20 minutes pretty much stops moving the Lazer Z HD?
Sounds to me like you definitely have a blow by inside of the hydro assembly. When the fluid is cold it's a lot thicker and will probably give you enough pressure from the get-go but once the fluid gets to operating temperature and starts to thin out a little bit is probably when it starts losing pressure if that makes any sense.
Great video ! I Gave u a sub!
Thank you so much I really appreciate it.
what if it ran dry of fluid as mine did today and stopped turning, I had a leak while mowing and one side completely locked up.
Have you run into a unit that is still weak after rebuilding the one side?
Do wheel motors get weak?
Yes it is possible for some of the Metal to Age and wear which would cause some pressure loss. The where could be so Minimal that you don't notice it and you could have some pressure loss from the blow by in the pump
Can i get oil on the new gasket? Will it leak if i get oil in it? I put new gaskets and had to re open the pump and oil got all over tge new gasket. Now it leaks. What shoiluold i do.
Wondering if you would know what would be causing one side of my zero-turn mower pulling normal and the other side not hardly wanting to pull at all?
First check the nut that engages and disengages the pressure. It's located on the pump usually in the front. Turn these if you ever need to push the machine. Make sure yours is tightened all the way and maybe losing pressure in that pump. What about the belt is it tight? Slipping at all? Could also be a clog in your charge pump on that side. It's quite a few things that could cause that type of situation.
@@youtubestar how do you remove a clog? Mine is doing same thing. Belt seems to be tight
Nut fully tightened
Purged system because reservoir was empty when I got it
Saved your boss $600 , I mean did he at least give you a $100 bonus ?
Morning, I have a problem with right hydo.Arm doesn't go forward all the way .Was told it is damper.Confused that has no bearing on forward motion only stabilizer. Left hydro is powerful all way arm goes forward but stears to right so have to back off ,to go straight less speed .please help me to diagnose this promptly. Had mower in and out of shop since last yr. Last person put gallon of oil in change caused me buy new motor it burnt up ! Now not trusting anyone. Can this be adjusted for speed to go forward and fast? Mower repair place told me not to adjust factory settings. How can I get the right speed up and arm all way Forward?
Wish stooping the arm from moving forward? Almost like hitting wall is it something stopping it, like rod or linkage? Please advise thank you
The problem you are having is a easy fix actually. There's a few things you can do to fix that problem both are very simple. When you push your arm forward there there is a long linkage rod you'll see that also pushes the hydro gear lever. On the end of that rod there should be an adjustment on both ends. It's usually easier to adjust the linkage at the end where it meets the hydro pump linkage adjusting that so it throws the arm farther which in return will push the hydro gear lever farther and make that side level with the other side. Also sometimes it's not in the linkage sometimes it's just the handles that have shifted forward. I'm not sure what model mower you have but there should be two bolts holding that handle on and when you loosen them you should be able to Pivot the handle back and forth and then tighten it back up. Does not sound like there's any problem in the hydro system itself it sounds like just some linkage adjustment or perhaps the handles
The problem I have with mine there was not a lot of power going forward but in reverse we have plenty of power
I would check the road adjustment on the side of the pump. Sounds like it might fix it. Adjust the nut on the long throw arm that goes from pump to your handle forwatd
@@youtubestar thank you very much for your fast response I will try it
Where can I order a rebuild kit?
I have seen some of the pieces on Amazon and another place called Jack's Small Engines. Depending on what you need you may have to order different pieces from different places but do a little bit of Google Search and you should be able to find all the pieces you need I don't know of one place off the top of my head that sells all the pieces in one complete kit
What if is leaking
👍🏼
please help, i rebuilt my hydro and filled the resiviour with fluid but the lines are bled and i ran it but i cant get the fluid to pump through the system
Did you replace the charge pump?
just bought one from a random site for $100 to not spend $1000. been robbing parts off an older mower and realized i already stole the left pump. if i take parts out of the right pump would it be the same insides as a left?
I guess it's all going to depend on your actual unit but I can tell you the bobcats we work on here the pumps are pretty universal they can be used on either the left or the right. Now you may have to relocate a hose on one of them but a lot of those pumps will come with the fittings to do so you may have to move a hose from the left side of the pump to the right side of the pump but you should see a bolt on that side of the pump for that purpose if you need to move a hose just take that bolt out and screw your hose into there and cork the other side. But other than that it should be pretty universal I would say that you're safe.
@@youtubestar well I took it apart and everything seemed to move fine thumbing through the insides but put it back together and it's gotten worse before it had a bit of pressure now it's nothing. Seems the oil is moving to the left side with no pressure Racking my brain here haha
The charge pump on the very top of the unit. Are you sure you put that back on the proper way? Everything on those pumps has to be put back in a precise manner which I'm pretty sure you probably did but just mentioning it. Take off the charge pump and check and see if the little ball and spring are inside of it still. Maybe something fell out that you didn't notice putting it back together.
If you don't mind me asking what unit are you working on is this a bobcat machine?
@@youtubestar exmark turf tracer.
ever seen one that whines all the time like when moving, but youre in a neutral position? mine is strong and feels fine but constantly whines. did fluid and filter. no change. wheel doesnt move when jacked up so its in neutral. whines with relief valve open or closed
I get asked that question quite often. The truth of the matter is hydraulic pumps always tend to have that sound there are some brands that are quieter than others but they all will have a whining noise. Now that's not to say that you don't have a cavitation problem inside the pump which means you have a blockage of some sort somewhere but I can tell you I work on zero turn mowers all day long new and old and they all have that whining sound to them you won't find one that is completely quiet.
@youtubestar yeah i work on them as well but this is a bit much. its like how when you move the machine, initially they moan until you get going, but its doing that at all times like they its always under load. sounds like 1 pump not both
got mine figured out. turns out was the closest idler pulley to that pump whining.
Where the heck does that tiny spring go????????
The spring goes underneath of the charge plate. It should rest on top of the ball
@@youtubestar Thanks. For some reason I still can't get the pump to bleed and pump again. I've tried everything that videos suggest. I've repaired one pumps in years past without any problem. I seem to be missing something.
You got too much lighting cant see well❤
I apologize I was having problems with the lens on my camera for that video but I did do another video if you search my channel when I got a new camera.
Thanks