How To Increase Hydraulic Pressure on John Deere 755 with Relief Valve Shim Pack - MORE LIFT POWER!

This is a DIY video that shows you how to increase the relief valve setting to raise the hydraulic pressure on your compact tractor. By raising the system hydraulic pressure you can increase the lifting capacity of your front end loader. I did this to my tractor to compensate for the additional weight from a quick attach bracket that I added to my front end loader. This video is somewhat specific to the John Deere 755 but the same principle also applies to the 855, 955, 770, 870, and 970 compact and sub compact tractors. If you would like your loader to lift just a little bit more weight, then slightly adjusting the relief valve pressure could provide the solution you want.
However, make these adjustments at your own risk, The video creator assumes no responsibility for any damage caused to your tractor by trying to adjust any hydraulic settings. Proceed at your own risk!
Thanks for watching!
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[@MichaelHerr378]

Added the shim pack to my 755 a few days ago. Took it from 2,000psi to 2,800psi. I’ll need every bit for the quick attach kit that came yesterday!

[@CaptainKleeman]

I’ve definitely noticed a difference since you did this to my 755. Was the difference maker in getting some logs loaded up for a buddy. Thanks again!

[@digdrivediy]

Awesome! I'm so glad to hear that it has been serving you well. Just that little extra bit has some huge gains when it counts. Hope you landed a set of forks for that tractor of yours! Thanks for tuning in Captain!

[@sassafrasvalley1939]

About a month ago we were being introduced to Electile Dysfunction... I am sooo glad you changed the topic! Because you don’t get something for nothing... we negotiate trade offs all of our lives. Work arounds, alternative methods, less performance for more convenience, higher risk for increased rewards... that is life. Striking that balance between being risk averse and too risk tolerant is a fine line. What you did seems to toe that line. I added an aftermarket quick attach to my old BX24. It was not a Skid Steer type. Two things became immediately apparent. Less bucket lifting capacity and more slack between lift/lower. At first it bothered me a lot. But, the convenience, when changing between grapple and bucket, more than compensated for it. I bumped the pressure just a touch and found a happy medium. It now lifted about what it had before. (The Kubota BX pressure control valve is easy to get to... it is near the rear PTO output.) However, pressure did nothing for the slack in bucket response. I just learned to live with that. Two summers ago I traded up to a new BX23S. It came with a factory Skid Steer type Quick Attach. What I found was, even though the pressure specs were the same, the new one was set at the top of the spec. So, lift capacity was about what I was used to. However, bucket slop was only half what it was with the aftermarket quick attach. Had I had never known what the original performance for the BX was... I’d have gotten used to the tractor as it was, without a thought of how good it could be. As it is, I recognize the trade offs and am happy to learn how to perform without fretting about dysfunction... I suppose it’s inevitable that... regardless of what you see in the TV ads... as you age you are going to have to negotiate trade offs. But aging also teaches you, slowing down just a little bit and enjoying the experience is a reward within itself! I know it takes a lot of courage to discuss ED in this environment... so, I applaud your bravery. Congratulations to you and your partner for successfully negotiating your way through it.

[@digdrivediy]

Ha! Very well said. You addressed a few key things that I neglected to elaborate on very much, the biggest of which being trade offs. I think as long as you find that proper balance and be content, then you may carry on with little risk. If however I get to a point where I want more and more, then I think I'm likely to find failure and break or bend the tractor. I just need to keep myself content with how it is now. Truth is, this tractor has been this way for a good while and I just recently finished the intro and end where I finally tried to pick up that concrete. I have used it in other work and seems to be all around just a little bit better and nothing extreme. I hope it will stand the test of time. Thanks for sharing the story of your Kubotas. I hope to be comparing my next tractor to this one at some point! Always nice when you get to follow a stair step approach to getting your "perfect machine", then you can appreciate the experience as you've said. I had a JD 318 loader before this tractor. That was great for nearly 10 years. This tractor is way better. Thanks again for the great comment sir.

[@marykoch5168]

I look forward every week to the entertaining comments by Mr. Valley. Your humour and intelligence matches my sons! Kudos!

[@sassafrasvalley1939]

@@marykoch5168 I’m flattered... after years being forced to do technical writing, I look forward to the opportunity to jot a more personal note to someone who is interesting... and returns the interest. Thanx for the compliment... and please call me Dave.

[@digdrivediy]

I look forward to his comments too Mom :) Plus, this week Dave made me realize I spelled "dysfunction" incorrectly in the video!! 😋

[@snoozieq4584]

I just read through all of the comments to make sure this wasn't already addressed. BOTH OF YOUR FRONT TIRES NEED AIR!!!! I'm laughing so hard because "Mr. Maintenance, OCD" didn't check the front tires' air pressure before trying to lift the concrete slab the first time. And no one else caught it either, or made mention of it. For shame Neil. 😂😂 Please know that this comment was all in good fun. I just couldn't believe how far the tires dipped when the slab was lifted. Great Video presentation as always. Thank you🥰🥰

[@digdrivediy]

Ha! Maybe so, but they actually are squishy cause it is so heavy! But I probably didn't check them either 😂. I know it's all in fun! Gotta have someone to keep me in line😜

[@snoozieq4584]

@@digdrivediy Oh good, I really didn't want to upset you with my nit picking. My hubby is from Muncie, IN and I'm from Baltimore, MD. Funny story, They (my In-Laws) claim to be Colts fans. My statement to them is "I'm an original Colts fan" since I grew up watching Colts football games from my dad's lap. LOL 😂😂

[@NeilLB7]

The increase was 25%. That's actually quite a bit in terms of hydraulic pressure. Fortunately you know your equipment and how to operate. Some folks on certain other machines with other lesser built loaders may not want to try this at home. I'm going to do this to my 670.

[@larrychapman6155]

Hey Neil, A follow up on my 955. I rebuilt 1 leaking boom cyl. while waiting for test gauge. It only read shy of 2000 PSI, 955 is supposed to be 2500 +/_ , anyway I found 2 thin, 1 thick shim in valve, and added all 5 new shims. It now reads 2500 PSI at full throttle. Was thinking later I might bump that up a little more, (like Tim The Tool Man Taylor says MORE POWER) Half a kit maybe? I would probably just break something again. Want you to know your video on 755 was Identical to my 955, and I was very happy with how easy it was to do. Thanks for sharing!

[@digdrivediy]

That's great to know Larry. I'm glad that you were able to address that low pressure issue. I think your 955 will perfomr much better and I'm also glad to know that it was the same for the 955. I think you could likely bump it a bit too. Appreciate the feedback and have fun with that 955!

[@thorbock1941]

thank you for your video we recently purchased a John Deere 755 and had to do some major maintenance not many people post on KZbin about these 755s!

[@digdrivediy]

Congrats on your JD 755 Toto! I have been truly impressed with mine and can't imagine life without it at this point. I'm glad you found these videos and hope you'll enjoy more to come as I plan to have my 755s featured in many more. Thanks for joining me!

[@chrisreibold1634]

I will upload a video of mine when I tear down an old garage

[@thorbock1941]

​@@chrisreibold1634 looking forward to it!

[@johnserrano9689]

Man I love those older little John Deere tractors. Yes yanmars, but 100% steel where the Yan's had aluminum. Making Deere's heavier which is all important, and stronger. I have the 1050 and love it. She's a real tractor and easy to maintain and operate. Big and heavy to easily handle the biggest of trees, big wet hay bails, and my "quick-attach" backhoe is big enough and strong enough to actually be useful for anything I could need, but is certainly not a excavator. Problem is my 1050 is a couple thousand pounds to heavy to drive over our actual lawn, and abit to big to get into certain spots an trails. My cousin has a 99' Kubota 25hp geared tranny and he is able to access all his property which has alot of extremely steep hills, he gets that Kubota through all his winding ATV-UTV trails to maintain and skid out trees for firewood. He has a small rear pto skidder winch for it and he loves it, perfect machine for his needs which is my point. Where my 1050 while not being large at all is still too big and too heavy for some things I really need or want it for. Flip side is if I had a smaller one she'd be too light an small for the things I absolutely need to do. Excellent video man

[@digdrivediy]

Thanks a lot John. And thanks for sharing about your 1050. It's nice to have such a machine that can get the job done faithfully and reliably. I've never been on a 1050 but sounds like a great machine. I wish I had about 4 different tractor sizes to do everything I want to do. Thanks so much for watching the videos!

[@johnserrano9689]

@@digdrivediy ya man you hit the nail on the head about the different sizes of tractors for different jobs. Simple truth is sometimes we need big an heavy with raw power, yet others we need small light and nimble still with the power of a tractor. Which is why your videos are so good, many tractor owners have a tractor too big or too small, making it paramount to select the tractor which "best" fits your needs. Even the older tractors with damn near legendary reliability have their short comings, but it's up to we the owners to have the right implements and know how that most of the time make the biggest difference

[@johnserrano9689]

A friend of my neighbor had a smaller Ford tractor I believe it was, she was used obviously which was the main factor I believe as they were worn. He did the same "mod" to adapt his beloved tractor to his needs and he swore he blew out both fel lifting cylinder seals within a month. So bad that soon as he shut it off nothing in bucket, loader halfway up he said tractor off the fed would ooze and slowly steadily drop to the ground. He should e added a seal additive at the least to help any bit. After he rebuilt them he said she was awesome

[@digdrivediy]

Man that doesn't sound good! So far so good with my modification on this one but I didn't crank it up too much really. Thanks again for watching John.

[@cubleycat]

I increased the pressure in my Massey Ferguson 35 when I put a new hydraulic pump in and its made a good improvement. Yeah its going to put more strain on everything but manufactures make things strong than they are rated at anyway so all you how are going to be posting comments about ' that dangerous' that going to wreck you machine' 'that stupid' just go watch something else ok!

[@digdrivediy]

Thanks! I do think these loaders are capable of handling this moderate increase in pressure. That's cool to hear you had a better experience with your tractor after the new pump. I think I'll be fine with this little upgrade and the benefits are well worth it. Appreciate you watching and commenting.

[@jefffrayer8238]

You did an excellent job with the quick tach and raising the pressure. Big difference between the 755 and my 750 and 67 loader. The reason they have lesser pressure is they have to make it idiot proof. You know to keep the weight even so not to twist the loader and not raise it too high and roll the tractor. I'm seeing newer Kubota loaders get bent. That cement it a very heavy load for that tractor but great for demonstration. Nice looking farm, hope bidens bs doesn't take it away.

[@digdrivediy]

Thanks so much Jeff! Yeah, gotta be mindful and play it smart when trying to use it at full capacity like that. I feel I approach most everything with as much common sense as possible which seems to be working out so far. I appreciate the kind words and for the great feedback. Take care!

[@RockhillfarmYT]

Hey, I've watched a few of your videos in the past but came back over to the channel after you were mentioned on the TTWT live stream. I really am impressed with your filming/editing style and the contents of your channel. I sent you an email also keep up the good work

[@digdrivediy]

Thanks a bunch buddy. I've been over on your channel as well. You've had some nice growth recently. Thanks for stopping in to say hi and I'll have a look at that email. Take Care!

[@johnserrano9689]

Forgot to say man it's actually impressive the 755 picked up that concrete. If she was upright and tight to the pivot point it'd be easier but still heavy. Even the newer Kubotas struggle, and the Mahindra has higher pressure/flow and will lift but the tractors not big enough (like at all) to handle it. Can't steer and obviously not safe. What good is the power when it lifts no problem, but it isn't lifting the load it's lifting the ass end off the ground even with weights/loaded little tires and a weight box. Yee older all heavy steep Deere's have hundreds of pounds and strength naturally cast into their hulls. I love those 650-750 Deere's man, like a way over built and over powered wheeler with a FEL lol

[@digdrivediy]

I'm always impressed by what these older machines will do. I'm sure thankful to have it around and now it lifts just a little better too!

[@zbo2]

So I have a 955 and am happy with the loader lifting capacity. The 3 Point hitch lifting capacity sucks for a tractor of this size. I think the way JD did it with a piston inside the the rear hydrostatic assembly is what is limiting the 3 point can lift. Most tractors of this size can lift 1200 to 1400 lbs. The 955 only is rated at 957. I checked the pressure a year ago or so and it's right on spec. I Picked up a new Woods BH75 backhoe for it so when I take it apart to put a power beyond kit on it I am gonna bump the pressure maybe 100 to 150 psi and see how it does. I have a Land Pride OS1548 seeder which weighs about 1250lbs.....I have to take the rear culipacker off just to "get it up" and when I fill the seeder It's barely getting off the ground, very frustrating, I knew when I bought it that it was gonna be close so hopefully another 100lbs of pressure will help. Very nice video, explained very well.

[@digdrivediy]

Thanks for the kind words. Yeah, it always seems like just that little extra could really help in most situations. It is so frustrating when your tractor can just "barely" do something. I was glad for this modification that really wasn't detrimental to the tractor but made it so that I could have just a little extra "oomph" to overcome the weight of the quick attach. I'd be interested to hear how that turns out for the 3 pt on your 955. I am hoping that I get to own one of those some day. Glad to have you watching.

[@ambermcfarland6273]

@@digdrivediy so this gave the 3pt a bit extra lift as well??

[@jonharris5522]

I been watching for a while , like the way your whole family relate and work together . what liquid weed control do you use after the second frost , very interesting time.

[@frankapplegate1364]

Great video. Quick and to the point. I have a 790 and this would apply if I ever have any issues. Right now the steering and front loader growl and studded when operating. Any ideas on that? I changed the hydraulic filter, strainer and fluid and no problems at first. ??? Thanks for you video.

[@digdrivediy]

I'm. It sure in the growling but sounds like it is starving for oil. Either filters or a pickup tube or screen maybe.

[@KingsOutdoorLife]

Great video as usual. I’ve been waiting for this since your collab. with Captain K. My JD 770 has ED, or pansytitus and I need to do this to it. I just bought some clamp on pallet forks (See yesterday’s video) so i really need the upgrade. I assume it’s about the same process on my 770. However, to quote the hater from your last video, since I’m a millennial - I’ll just pay somebody to do it. 😜😅🤣😂 Besides, I wouldn’t want to get my hands dirty!

[@digdrivediy]

Ah, come on! It's not that tough and I think that it is nearly the exact same for the 770 as they share a good portion of the same components as the 55 series. Either way though, even if you pay someone to do the upgrade you won't regret it as long as you don't take it up too much. Thanks again for the kind words and I'll hop over to your channel and check out those clamp on forks pretty soon. Thanks for watching sir!

[@ccroson7935]

I like the video I have a John Deere 300 I’ve talk to you before a couple of times about some of your videos I love your videos I’m wondering if I can just bust a little bit more Hydro pressure out of my John Deere 300

[@digdrivediy]

Hello again. I've never bumped the pressure on the little tractors so I'm not sure how to do it or what would be involved.

[@reconrc1787]

Hello, thanks for the content. I have a 97 JD 770. Do you have any idea what shim kit I need?

[@RockhillfarmYT]

Good video

[@digdrivediy]

Thanks I appreciate it. I like that storage rack video over on your channel. I need one of those here!

[@claytonkeeney8911]

I wonder if this would work on the 50 series that came before the 70 series

[@digdrivediy]

I'm not sure.

[@duaneamos4413]

Neil, I have a John Deere 970, can this be done on that tractor as well sir? Great video!!!

[@digdrivediy]

Yes, I believe that it can be done in almost the same way. The 70's were of similar design if not exactly the same in some of their undercarriage design. I believe that some of the manuals I referenced listed both series of machines. Best of luck to you!

[@RiverValleyLandscaping]

My relief blew out the bottom of my loader valve on my allmand tlb after the female thread had cracked, now it’s just a spring half sticking out and leaks a little, funny part is I still use it like that until I find the parts and have the time to take it all apart lol

[@digdrivediy]

Holy smokes! Well, at least you know what to do to get it fixed and I'm glad it's still working that way for you. I hope I don't suffer the same fate! Thanks for the comment and for checking out the vid!

[@RiverValleyLandscaping]

@@digdrivediy I would think the little bit of increase would be no problem for a loader valve that’s in decent shape as in your case, I had bought my backhoe for a few grand on a lunch break that I don’t even get while at work, so with all the pieces of the machine atleast there I knew I could always get my money back reselling it. It was previously a Taylor rental unit and the person I bought it from had basically no knowledge or experience with equipment so i knew it had been tinkered with in not a good way haha. Hopefully this winter I can tear it apart, I’ve been looking for a skid steer quick attach solution and your video solidified my thinking on how to approach it... seriously I can not thank you enough for posting that video Neil!

[@digdrivediy]

That's great! I love hearing that kinda stuff. You always wonder if people find any of this stuff useful so thanks for letting me know!

[@DavidJones-ti6mk]

I was looking for a pressure gauge and JD quick connect male fitting on Amazon & it looks like I need another fitting to connect them together.

[@digdrivediy]

Hi David. I was able to connect the John Deere male fitting directly to the gauge. The gauge I purchased had a male pipe thread sticking off of it and the JD quick connect female inlet side threaded right on.

[@dixie5795]

I wunder how much extra it puts on the hydralic seals an old lines. For sum reason my 790 has a 70 loader on it.

[@digdrivediy]

Couple years so far so good.

[@brycehartzog8154]

I have a 755 that ran fine until a month ago. It will crank, but only run with the throttle in the high position but barely. If I hold the key over, it’ll run as it should, however, once the key is released, it will either go back to low throttle or croak. Have you seen this issue before?

[@digdrivediy]

Sounds like maybe the fuel solenoid is partially closing as it is running, but I am not entirely sure. I have had issues with the fuel shutoff solenoid not working properly and there is a rod on them that can be adjusted. I would start there since it appears to run fine when the key on. In one of my other videos I actually make a repair to the wire that goes to the fuel shutoff solenoid. I'll try to find it if I have time. (It was the one where I was getting the leaf vaccuum out for the first time)

[@digdrivediy]

kzbin.info/www/bejne/eKfKamB4j5uMgtk

[@keving2371]

Wheres the link for the pressure guage ? cant find it

[@digdrivediy]

amzn.to/3WgJwEo

[@jimmything1000]

We have a john deere 855. Just added the loader. We were looking for a hydraulic kit for it. I see you had the loader on yours. Did you add a kit? Or peice it togeather? I cant seem to find a kit anywhere. I heard there is one.

[@digdrivediy]

Both of my tractors came with the factory installed loader valve. I think it would be difficult to add it unfortunately.

[@soundwisestudios5340]

I have the 855 4x4 with the 70A loader.. where would I get the shims from?

[@digdrivediy]

You can buy the shims right from John Deere or get them on ebay.

[@johnserrano9689]

I have the 1050, an 88' do you know if that'll cross over to mine? Has the older style twin stick control. 1 to raise and lower obviously 1 for the bucket curl. She has a lot of power already, surprised me lifting a pallet of concrete (one of those times where you have little choice, rain was on the way) it was definitely very heavy and I only needed it off the ground a couple inches. But more capacity is needed when you least anticipate, and there is legitimately nothing online I've been able to find about it

[@digdrivediy]

I don't think it's the same setup for the relief but not 100% sure.

[@reconrc1787]

Do you sell the quick attachment kit? I have a 770 and I'd like to remove my bucket in place of forks at times.

[@billymartens7732]

My brother in law has a 755 when it’s cold outside he can’t start it up he has it plugged in the engine is warm to the touch it won’t start so he had it in my dads shop where it’s nice n warm then he can’t start up no problem he changed injectors still no difference any ideas what might be wrong ? My dad has a 955 never had any problems even at -30

[@digdrivediy]

I'm not too sure but it sounds like it could be bad glow plugs or low on compression. One of my 755s has 2x the hours of the other. The high hour one starts hard when cold and the lower hour one starts great. Both have working glow plugs. I would make sure the glow plugs work first then go from there.

[@billymartens7732]

Thanks

[@Panelson74]

@@billymartens7732 The relay for the glow plugs has a thermostat built in, probably bad. Also, check wires to glow plugs tend to short to bolt on head.

[@Jeff-sc1df]

My 4700 full size loader control reacts a little to quick. Any way to reduce this action?

[@digdrivediy]

Hmmm. You should be able to adjust that but I'm not sure how to do it on a 4700. Good luck with looking into that on your tractor.

[@larrymattox2471]

I recently installed power steering on my 1988 JD 950 with 80 loader. This steering kit uses hydraulic pressure through the steering mechanism (old steering column , gears and pitman arm removed). Prior to the install, I noticed that you could hear the pressure relief valve working when you tried to pick up a load that was too heavy. I only have around 1300 psi at the boom quick connect using my pressure gauge. I checked the pressure coming off the pump and it is only 1800 psi at full throttle and can only lift a 850 lb. 2 1/2’. I can no longer hear the pressure relief valve working. I guess it is because the pressure is not building up high enough to activate my valve. It seems I am loosing pressure between the pump and the quick connection to my loader. I am guessing that this shim kit would not help my problem or will it? I cleaned the screen and changed the fluid ( no filter). 3 point hitch seems to be working fine. I can’t imagine that the power steering is robbing that much power. Any help or suggestion from you would be appreciated. I read the 134 comments thinking I may find an answer to my problem but I did not. Larry

[@digdrivediy]

Boy, I'm not sure. Larry. If your pressure relief valve is weak then it could do like what you're suggesting. It's designed to let oil bypass the work so that you don't overstress your cylinders or framework. By raising the pressure relief value, you allow more pressure to those components before the oil bypasses and returns to tank because of the pressure relief valve. So there is a possibility that the shim pack could help you by raising the pressure that is a permitted to go to the cylinders. Do you think it could lift more before the power steering was installed then? If that's the case then I don't think it is your pressure relief situation. It is something with oil being starved from where it needs to go because of the power steering possibly? I'm not really sure though, so I don't want to lead you down the wrong path. Maybe someone will read this and jump in with some advice.

[@larrymattox2471]

@@digdrivediy thank you for your speedy reply. The pump is rated at approximately 2000 psi. I am getting 1800 psi output at the pump when lifting the bucket with 850 lb. of gravel. Since I can no longer hear the bypass valve working when picking up a load that is too heavy I think it may be do to the power steering unit robbing some of my lift capacity. Also the power steering unit lines are only 1/4” compared to the 1/2” on the rest of the tractor. The entire hydraulic system goes through the power steering before proceeding to the 3 point hitch and the loader. The smaller hydraulic lines , to my understanding, will only affect the speed at which the load is lifted and not the overall weight since the pressure is not affected by the smaller lines. Oh well, the steering works great when picking up a heavy load. I guess I wanted it all and was looking for a magic bullet. Thanks again for your help. Larry

[@detroitdiesel1776]

would a stuck relief valve cause a no / intermittent hydro situation. no trans. bucket. or pto you can hold bucket control lever over, nothing happens sometimes it'll have a jerky movement for a second or two similar to a low hydraulic fluid problem, but fluid is full, new and clean. any help?

[@digdrivediy]

I don't think it's the relief valve. Sounds like you have something starving the pump for oil. Even if the relief valve is open the transmission should still work I believe. Wish I knew what to tell you for sure but best of luck!

[@detroitdiesel1776]

turns out the hydraulic screen and filter was plugged. changed it out. runs like new just kinda crazy it happened all at once.

[@digdrivediy]

@@detroitdiesel1776 Awesome! Thanks for the update!

[@aggiannakos7864]

Will this work on my 650? It's struggling to lift a welder

[@digdrivediy]

I'm sure there is a version of this to be done on the 650 as well.

[@zachdick02]

Great video as always!

[@digdrivediy]

Thank you kindly sir!

[@outdoorsclickllc663]

Hello I recently purchased 755 Do you have any idea of a kit to add auxiliary Hydraulic We have a little backhoe I would like to use I need the hook up Thank you Any idea I will appreciate

[@digdrivediy]

You have to add a power beyond but I have not done that yet to mine. If you google power beyond for your tractor you may find some info. Also, another KZbinr named "Captain Kleeman" put rear hydraulics on his 755 so that might help you a bit to see what all is involved with it.

[@outdoorsclickllc663]

@@digdrivediy thank you very much for your time sounds like a plan I will investigate a little more We do similar work my friend I also have a backhoe older Massey Ferguson 50D Big fan man

[@mrmikeyd2]

Who knew the trouble all along was in the "relief valve"?😜😜 Have I just watched tractor porn with a John Deere strap-on????😂😂😂 HIlarious video, thanks for posting!

[@digdrivediy]

Ha! I didn't even think of that angle... "relief valve". Makes even more sense now 😂 Nothing wrong with a little tractor porn... or dozer, or dump truck, etc! Thank you sir!

[@tonynieuwlandt1290]

Cool video Neil, was that your version of a PSA? (public service announcement)

[@digdrivediy]

Thanks! Yeah, my attempt at a PSA! Or actually my attempt at humor 😂 I felt the topic of hydraulic pressure might be a little vanilla so I was trying to spice it up a bit!

[@mrmikeyd2]

"If the lift stays in the air more than 4 hours, consult your John Deere dealer"

[@digdrivediy]

Hahaha! That one actually made me lol. Good one :)

[@johnserrano9689]

1 cubic yard of concrete is average of 2700 pounds as a rough figure in my field

[@digdrivediy]

Not an easy think to move around!

[@clinteast7476]

Whats the best balast weight for your 755?

[@digdrivediy]

I use either my 3pt grader box or I have a weight rack that I can put 400 pounds on. I'd like to have ballast in the tires.

[@edp9743]

Its interesting that JD didn't just engineer a threaded bolt in the relief valve with a lock nut, instead of shims. Be Careful I've seen tractor frames break by overloading loaders.

[@digdrivediy]

Yeah, that would have been much handier to work with for sure! I shall heed your warning and be careful. I didn't take it above what these loaders can handle on the slightly bigger machines so hopefully I'm still safe. Fortunately when the lifting gets too heavy I can rely on my backhoe to take over! Thanks for watching!

[@yoursuccess]

is the relief valve location at the same exact spot on a 855?

[@digdrivediy]

Yes.

[@cd1168]

Has this held up? Is the loader more reactive/quick I have a jd990 wanting to do something. Very sluggish

[@digdrivediy]

It has held up really well for me. No issues so far!

[@cd1168]

That’s great. Has it made it quicker or just stronger

[@digdrivediy]

@@cd1168 Not really quicker. It just works longer before the pressure relief valve opens, thereby making it lift more weight.

[@steveweller4675]

Great video and info - thanks! Wondering if this will work on my 750? I believe the two models share a lot of features / mechanicals.

[@digdrivediy]

That's a good question Steve. I would expect them to be very similar but I'd have to check to be sure. Let me know if you find out.

[@jefffrayer8238]

That 755 is totally different than our 750 for sure. Looking at the owners manual the 650 and 750 both have 2,030 psi. 67 loader manual shows the relief valve located on the loader reduces pressure to 675 psi for the 650 and 1,075 psi for the 750. Breakout is 752 vs 1206. Rated lift is 400 vs 700. It also shows that relief valve can be taken apart and cleaned. It says the relief springs and balls are not interchangable and must be put together exactly as they came apart. I'm putting all new hoses on mine and will shim up the relief springs. Looks easy and if not from JD you can buy small washers at Menards, Lowes. Great tractors if you can find a good one and a good parts source is HoyeTractor.com. A copy of the JD service and parts manual is also available if you plan to keep it.

[@digdrivediy]

@@jefffrayer8238 Great info! Thanks Jeff!

[@steveweller4675]

@@jefffrayer8238 thanks for sharing that info, Jeff. I do love my 750, and the manuals I have have been really helpful. Now, if only I could find some turf rims and tires for the 750, I'd be thrilled.

[@steveweller4675]

@@digdrivediy Added the shim pack yesterday, and loader seems a good bit stronger. Will test it out later this week. Replaced some hoses while I was at it. The hardest part of the whole project was tracking down a 26mm socket to get the relief valve bolt off!

[@scottthornton3427]

Will this add lift capacity for the 3pt?

[@digdrivediy]

I believe it will since the relief pressure is higher. I can't say for certain though as I never fully looked into it. There may be a different relief for that valve.

[@johnterpening4727]

Where would you recommend I purchase the shims?

[@digdrivediy]

Hi John. I just got them from my local John Deere dealer. They were pretty cheap (less than $5) Good luck!

[@josephkober3734]

Where did you get your ballast box ?

[@digdrivediy]

That came straight from John Deere when my brother-in-law bought his 1023 John Deere. He is borrowing my rear weight bracket so I am using his for the time being.

[@ytoal]

Same for a JD870?

[@digdrivediy]

I believe so.

[@kennethfriedrichsen7079]

Have you added a rear remote valve to your machine? That would be interesting content.

[@digdrivediy]

No I haven't Kenneth but I would really like to do that so I'm glad to hear you think it could be interesting. I'll put that on the list of ideas! Thanks!

[@chrisreibold1634]

I agree! A diverter valve too!

[@larrychapman6155]

GREAT video! I bought a 1990 "955" in 1999 with 800 hours. It has been a real workhorse, but I keep breaking the MFWD, 3rd time $800 to $1000 each time for parts, (I do all my own work), but Still cheaper than a new tractor. Mine has the same paint "cancer" that yours does, and several years ago I tore it apart, repainted everything, and it came right back!! What's up with the sheet metal on that year? Anyway, I have the same ED issue, but I also have leaking cylinders I'm going to rebuild 1st.then will do a pressure check. I did the hose swap, and it still won't lift it self with boom, but no problem using bucket. Been that way along time it is annoying. BTW I want that bucket conversion. Is there a kit yet??

[@digdrivediy]

Hey Larry! Thanks for sharing your setup. That's weird that the MFWD keeps breaking. Doesn't seem right according to what I know of these. They sure make good working tractors though. There are parts to purchase to build the quick attach and there is also a guy selling the conversion that you can just bolt on to your loader arms. You'd still need to come up with a bucket. I have a video on building the conversion from scratch using some ebay parts. Thanks for watching the video!

[@timblack33]

I’ve had several 955’s and worked at a deere dealership for years. What is the issue with your MFWD

[@galehess6676]

Does the increase in pressure, realize an increase in Hydro fluid temps? Does the shim job, increase the 3 point hitch lift capacity? Thank ya

[@digdrivediy]

I don't think it would increase temperature to any significant degree. I believe the increase in 'relief valve' pressure would also be observed at the 3 point hitch although I am not positive about that as it could have its own relief valve but I'm not sure.

[@R.L.woodbaron]

Well…I just put the shim kit in my 955 and split the pump housing wide open😕

[@digdrivediy]

Well, certainly sorry to hear that Wood Baron. First of heard of that happening and I'm trying to figure out how that would actually happen as I would think it would blow any of the rubber hoses or fittings before blowing out the pump? It sounds like your pump was dead heading so I'm curious about this particular installation. Of course the 955 already has an elevated pressure relief setting as compared to my 755 as I was trying to make my 755 more like the pressure of the 955. The 955 has a different pump than mine as well. What was your initial pressure setting before the shims? Did you use it at all after the installation or did it split the pump upon starting it up for the first time? That sucks.

[@Calico_on_pawz131]

Concrete weighs 150lbs per cubic foot.

[@justinrobertson1590]

I’m confused. How many of the shims did you use again?

[@digdrivediy]

Oh sorry. I used all the shims that come in one package. So, what you see in my hand is all of them that went in there.

[@justinrobertson1590]

@@digdrivediy thanks. Nice information in that video. 👍🏼

[@evilmanhut]

Will this work on a 790?

[@digdrivediy]

Yes, it should.

[@casycasy5199]

wow i gave my tractor a little blue pill and it didn't work.so doc thanks ill try your way.lol

[@digdrivediy]

Ha! I was just thinking I should have referenced something along those lines 😁. Hope your tractor finds relief! Thanks so much for watching!

[@sas1967mustang]

I installed the shims and the pressure increased but then the tractor would not go forward or backwards

[@digdrivediy]

Wuh? That's weird. Shouldn't be the case if you have pressure. Did your hi/lol range selector get accidentally bumped to neutral during the tin removal?

[@sas1967mustang]

I will check when I get back in front of it.

[@sas1967mustang]

@@digdrivediy I think you were correct. The selector was in the middle. I did notice something odd. My baseline psi was around 1800. I thought it would be 2000. After the shims it jumped to 2300. Should I expect the pressure to hold at the high level or drop down rather quickly

[@digdrivediy]

@@sas1967mustang Oh thank goodness! Easy fix! I think the pressure should stay there quite a while. You're going to notice a nice increase in capabilities going from 1800 psi!

[@randallrougeau530]

Just like a John Deere, disassemble half the tractor and pull plates off that’s not even close to where you need to get, thanks for the info bud,,,, but I know you know the more pressure on that pump the quicker it’s going to go out,,,, thanks again…

[@digdrivediy]

Hey, thanks for watching. Time will tell I suppose. So far so good.

[@johnpolczynski7984]

Doesn't that put more pressure in the line's?? I be afraid it would blow the line's

[@digdrivediy]

It's all good. Pressure is higher on 855 & 955 bigger tractor with same exact loader. Works great actually!

[@johnpolczynski7984]

@@digdrivediy it works great but does it put more pressure on the line's?? Mine says 2000 pounds lift so it the same as the 755 so I could bump it up 500 psi.??

[@digdrivediy]

@@johnpolczynski7984 Yes, the pressure is throughout the hydraulic system so more pressure on the lines. What is your tractor? I would think a 500 psi increase would likely be ok but I don't know what you have.

[@johnpolczynski7984]

@@digdrivediy 1987 855 jd with yanmar 3 cylinder diesel

[@digdrivediy]

@@johnpolczynski7984 You'll be fine at 2500!

[@norrishall5004]

Now you can look forward to rebuilding your front end every other year. Ask me how I know.

[@digdrivediy]

How do you know? Actually this tractor has had the pressure relief increased for several years now. Haven't had one stitch of trouble with it. As I mentioned, same pressure setting as the 855 & 955 on same loader frame so I'm surprised that you would have had trouble with just a mild increase. I guess I'm lucky it is holding up well. Thanks for watching!

[@nonenoneyourbusiness8362]

OH BOY! 🤣🤣🤣🤣🤘🏼💯

[@digdrivediy]

Yeah buddy!

[@cleobean8723]

A little bit increase? That 25% increase comes at a price. That blows out any 20% incorporated safety factor. Be wary of overloading your cylinders.

[@digdrivediy]

As mentioned, it is the same PSI used on the 855 & 955 which uses identical loader components. Two years of use and no issues (other than increased loader functionality 😉)

[@FloridaDeere]

ED, LOL!

[@digdrivediy]

😋Just trying to make the subject of hydraulics a little more entertaining! Thanks for watching.

[@FloridaDeere]

@@digdrivediy I like the spin on it

[@hollandduck79]

👍🇳🇱

[@digdrivediy]

👍👍

[@stanger35120]

Will this work on a 790 with a 70 loader?? Before I did the quick attack conversion it seemed a little weak, after even more so...

[@digdrivediy]

It will work