MUST HAVE TOOL! How To Fix or Rebuild a Floor Jack [BOTTLE JACK]

It's hard to be without your floor jack. We show you how to fix and rebuild your floor jack, or just about any other type of jack. Most floor jacks have a simple bottle jack that does all the heavy lifting. After pulling this out, the teardown and rebuild process is pretty similar across many brands.
Jack Rebuild Kit: amzn.to/3jENxie
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[@teejay622]

What I've found is that I like to replace ALL of the seals and O-rings when I go through a floor jack. Sadly, manufacturers are more concerned with the bottom line (cost/profit) than they are with quality and almost ALWAYS use inferior parts. My local hydraulic repair shop has proven to me that even a brand new (unused) jack can be improved with a simple rebuild with better parts and some attention to detail. My guy says he has yet to have one of his floor jack rebuilds come back. Ever since he showed me that, any time I have to open up a floor jack (for whatever reason) or even my engine hoist, I go completely through it, deburring anything that needs it, and replacing everything with quality parts. I've yet to be disappointed with this method. I LOVE how you went through this process in such detail! Best hyd jack rebuild video I've ever seen on the web! You have a natural teaching talent. Thank you for sharing it with us.

[@plusblood5101]

No one makes quality parts They r now after oil Fighting unnecessary wars all over the globe

[@baircichlids5350]

Found a 2 Ton Napa floor Jack at the house we moved into and it had a leak when I used it so now I know how to repair it. Thanks for the great video my friend 👍

[@Shoptoolreviews]

Great, so glad it was helpful. Thanks for watching and have a great day.

[@myemail2005]

Think about tipping when someone saves you so much money, time snd effort? I've done it many times! Just $5, but the small tips add up when lots of people tip.

[@waltschannel7465]

Outstanding detail!!! I've watched a lot of jack repair vids, and yours was by far the most complete and with the best visuals!

[@saltysteel3996]

Not supposed to over fill to the top of the fill hole, this will cause a jack to lock up and not go back down. Also, when bleeding air by pumping the handle (loosened off like you're lowering the jack down) you need to leave the fill screw/plug out of the hole. Everything else was good to go.

[@ajcaiati]

That makes sense, because my NAPA jack fill plug is open with a ball bearing in it. The ball bearing in the fill plug lets the air out while the locking valve is open, and it makes it easy to see the air mixed with very little oil coming out of the system. If I was to turn my NAPA jack upside down, it would let the oil out of the cylinder for the ram through the free floating ball in the fill plug.

[@victorcontreras9138]

Very good practicality! The cardboard idea of setting the diagram and parts was really helpful. I'm going to do it like that.⚠️

[@billclinton6040]

I just want to say THANK YOU so much for this video. My 15+ year old Craftsman 3-1/2 ton floor jack would no longer hold any weight and if it weren't for this video, I would have never had the confidence to tackle the repair. Turns out, the ram seal on mine cracked which is why it would pump up but not hold (no leaks). I simply replaced that seal even though the rebuild kit came with all the O-rings and even the valve bearings. Now works great again! But if it ever develops a leak down the road, I know what to do. So thank you for the great video!

[@Vin3Man]

I hello I have the same craftsman jack with the same problem, where did you buy the new seal? Thanks!

[@cardo1111]

Excellent teardown and rebuild video. These floor jacks are more complex than one might think, good techniques demonstrated here.

[@Shoptoolreviews]

Glad you enjoyed it. Thanks for watching.

[@stevehoppenjan]

Great video. It is a gift when an expert can explain things in a way that a non expert can understand. You have that gift. By the way, it is bearing ball, not ball bearing. Everyone makes the same mistake. I was in the bearing business for 22 years. A ball bearing has in inner and outer race with bearing balls inside of it. Sorry. Can't help myself : )

[@chipmeister111]

I've ordered myself a kit with bearing balls and seals so I'm watching KZbin vids to better understand everything a little better and I've learned a lot about what to do and what to watch out for from your video. Thank you

[@andersonpina4607]

My friend u rockkk a lot, i helped to my 66 years old father to rebuild his jack just seeing ur video, god bless you.

[@hoovercat8605]

yep, that old craftsman jack.....working on one right now. This was a GREAT help. I missed with the "do not adjust" valves and now I have a baseline since I'm assuming these are most likely baseline settings. I had the u joint break and I was able to replace just the joint with a bit of work instead of having to order the entire assembly. I also learned that one of the large allen bolts securing the handle housing is LH....

[@gtwhome]

First class tutorial ! Thankyou for taking the time to make this.

[@rc4211]

This is perhaps the best overall video on disassembling and reassembling a floor jack that I've seen on KZbin, and I've watched many in preparation to repair my own jack. I have found no other video that addresses the channels and check valves inside the distribution block. Really well done! If you ever decide to edit, or add to this video, please consider including further detail on disassembling and reassembling the o-rings and seals around the ram inside the pressure cylinder. That could be very helpful! Thanks very much for your efforts on this video!

[@superprojb]

Textbook advice and examples. NICE. Thank you!!

[@savage22bolt32]

Most people can skip the first 8 or 9 minutes. The best part was at 15:42! And there are a lot of good tips throughout the vid.

[@sammyboy170]

Amazing step by step detail. Fantastic tutorial.

[@Shoptoolreviews]

Glad you liked it! Thanks for watching.

[@ajcaiati]

OUTSTANDING VIDEO! Very well explained, I have a 3.5 Ton NAPA Jack very similar, this video makes it much easier for myself and others I'm sure. I have my NAPA jack18 years, just last week it started to creep down. That tells me that oil is bypassing a seal or ball bearing somewhere inside, no visible external leaks ever. The jack has served me well, now it's time to replace the seals, O Rings and bushings if necessary. THANK YOU VERY MUCH for your time and effort, I did subscribe

[@richardhaen]

Very good video, u did a very good job of explaining what and how to do this, very good my Son yesterday just brought me a floor jack that dose not work so I can fix it for him. Thanks

[@MarkSWilliams27]

Very comprehensive and well explained. Thank you.

[@Shoptoolreviews]

Glad it was helpful! Thanks for watching.

[@melfrank8379]

I bought a cheap priced Jack off Ebay that was a store return, it was a 3 ton Aluminum jack , when I got it I noticed the U joint piece was missing, I call the people who distributed it and they said even though that part is shown in their breakdown, they no longer sell it, Chinas way of making you have to buy the whole new jack assembly. I thought about making a part on my lathe but did not know the thread size, so I find one on Ebay but it says it is for a 3 1/2 ton jack. I went ahead and took a chance hoping it would fit. I get the part and the drive part is a 5/8" square shank so it would not fit the 1/2" square hole in my handle, I took a square file used a micrometer to measure the difference in the sizes, divided that by half and filed one side till I reached that measurement, then I filed the opposite side the same bringing it to .625 thou, I repeated that on the other sides of the square hole. Stuck the handle in and it fit. I thought great, it should work now, but no, when you cranked the handle the jack went up a little bit and right back down when you lifted the handle. I thought the idiot that returned it might have taken it apart losing the check balls, then I saw your video and saw there was a check ball in the port where the u joint shaft goes. I save everything when I fix things, I had rebuilt several automatic transmissions in the past, I had 3 sizes, I used your video to determine which ball to use and put it in. Now the jack works. Thanks for your video.

[@darrellroireau4061]

Very detailed! Great work!

[@grahamhall2662]

Excellent thank you. I have an old Bradbury jack which has given over 60 years of service without fault. It is leaking oil now when under pressure so this video gives me a good insight of what to expect when I disassemble. It has been a fantastic jack and if I cannot repair it, it will be a sad day for me. Getting the seals might be a problem?

[@Shoptoolreviews]

Those old jacks are definitely worth the time and a few bucks to get them back to new. They should definitely be serviceable. Thanks for watching.

[@ezrajames19]

Never thought I would need to learn how to repair a jack thanks.

[@hotrod8915]

Finding the correct seal kit is the hardest part. Step 1 disassemble. Step 2 reassemble in reverse order. Step 3 verify repair.

[@adkfoothills1973]

Great video, the best I've seen. Thank You!!

[@hellohi3392]

What a beautiful video. Thanks for that. Is it possible to find a seals replacement pack.

[@TheMotorcycleBoss]

Thank you! My harbor freight 3 ton jack went out and needed a rebuild. Only cost me $50. (Socket plus seals) your video made complete sense and is the best jack rebuild video i've seen on yt. Thanks a lot!

[@joe911joiner6]

where did you get the kit from

[@TheMotorcycleBoss]

@@joe911joiner6 i dismantled the jack and took it it down to my local hydraulic shop. They matched the seals for me and even swapped them out for me for free. I finished the rebuild at my house. Works great!

[@davidfrank2824]

The one thing I cannot get over is the price of these kits to fix your floor jack. How can these companies justify the cost for rubber o-rings? In most cases the rebuild kit is half the price of the jack you're working on. When I guess looked up one of my jacks for parts for another $20 I can buy a whole new jack. You provided some great information I guess I don't know if it really is worth spending this kind of money to fix an old jack.

[@artsnow8872]

Pricing for jack repair parts is like anything else (oil, gas, medicines, health care and products, sex toys and aids) -- the sellers will set the price to whatever the market (buyers) will bare. Thus, we have greed and price gouging wherever we go. Some people are so great, are they? Some is good people.

[@Danidasanic]

Overfilled . You should give around 6mm of gap between the oil and the top of the filler hole , Apart from that great video , very informative

[@nevinkuser9892]

Gonna have to suck it out with a straw.

[@budparker8344]

Your video on the floor jack was very help full. Except my floor jack 50239 cylinder came apart at the base removing the ram cylinder also. Sitting there was a .325 steel ball bearing. I have no idea where it goes and have tried numerous times with it and with out the ball bearing. The jack still will not work (correctly bled). If you ever do another video on this jack see if there is a ball bearing there and where it goes. Thanks

[@kevindanahy4665]

Thanks for this great video. It's too bad that the Craftsman floor jack you showed has been discontinued because it has features that I haven't seen on other similar floor jacks, like the nuts & bolts tray and the extra handle at the rear.

[@hotrod8915]

Goodyear makes one and the tray is magnetized.

[@MLeung-vl7we]

Nice detailed video. When the pump is pressurized and under load (supporting weight), is the pressure on any of the seals, or is the load basically on the steel ball bearings "cloging" the return line until manually released? Would supporting a load for a longer duration prematurely weaken a seal because of the pressure?

[@geraldfiorello6231]

I have this same jack where do I find the o rings to replace them? Great video I appreciate your work.

[@philliphall5198]

Great idea on car board drawings and putting them in order and pressing ball into it Very smart 😊 Thank You

[@Shoptoolreviews]

Thank you very much and thanks for watching.

[@pcallah3442]

That power unit appears to be a Hein-Werner, good unit, been around a long time, I have the same unit in a jack I've had for at least thirty-five years. I noticed one thing left out and if you're going to do a full tear-down, clean and rebuild. there are allen-head plugs on each side of the unit, sides where the bolt holes are. Inside each you'll find a check ball. Noting special just something to clean out too.

[@LynxStarAuto]

Honestly with these units less is more. The fluid rarely ever see's huge amounts of stress as most folks just lift, and then use jack stands to support the vehicle. Essentially removing the stress off the unit. The amount of height and travel is very small, so the fluid never sees extreme temperatures or variances. You just want to make sure the exterior of the hydraulic unit is squeaky clean before disassembling, and just remove and service the problematic area and call it a day. Keeping in mind too that most of these manufacturers don't even want to sell you complete seal kits. Rather preferring you discard and replace. So the less intrusive you are, the better you will turn out. 👍🏽

[@derekczeschin5623]

Awesome video! I have a harbor freight 3T floor jack that just stopped working and I’d hate to throw it away if I can fix for almost nothing. Are these seal kits kinda universal?

[@KIKOANGELESPARZA]

Very good video and I learned a lot off of it,Thank you very much,

[@sobeitme]

This really help me.

[@cherylgriffin5945]

hey your tutorial was great...was wondering if you could help me..... the jack i'm working on is a roush 3.5 ton g 738 .... it has 4 setting ports instead of 3 setting ports......it does have speedy lift option..thx for any help.....WRG

[@canucksteel]

Very helpful vid. Good work

[@guycabiarro586]

+Really enjoyed that teardown. Great explanation!

[@adriangt]

good video!! does this kit fits the 4 ton craftsman floor jack ???

[@12tremblay]

Well done sir !

[@libertyjusticeforall6754]

That was as awesome rebuilding video thank you. What brand or ratchet wrenche wrenches you using?

[@jimcapelli1431]

My Pro lift model # G-2593 3 ton jack raises up fine, but won't hold a load. Do you think it needs a total main cylinder rebuild, or just one of the easier to replace o rings? I already tried adding oil and bleeding it. It does seem to leak fluid out of somewhere, but not on top. Please advise.

[@tomreyes4908]

Best video regarding rebuilding floor jacks. Question, instead of taking all the ball bearings out, could one flush the piston with simple green or other cleaners? Mine is similar to yours but it won't lift the car up. I feel its the ram seal that is cracked that i plan on replacing . I'm waiting for parts now. Thank you.

[@jimhenry3992]

Thank you teacher.

[@Shoptoolreviews]

You are welcome. Thanks for watching.

[@HeinerStorchennest1]

Great Video. I did Not understand, what turning Back 1st and 3rd valve screws IS for? And should I know? Are they loose while dismantling? Didn't get that episode.

[@markwarren7116]

Having that jack torn apart I would have replaced all the seals even if it needed it or not.

[@roz4747]

Having torn that jack apart, humpty couldn’t be put back together again at this house…..

[@hotrod8915]

Yeah. Shoddy rebuilds just like transmission shops. Mixing new parts and old parts that wear into each other is why transmission shops are always busy. No matter what issue you are having its gonna require a 3k rebuild. Which may only be a sensor or shift solenoid. They capitalize on the customers lack of knowledge and the fact that u can't prove they didn't perform the repairs claimed. It matters if u end up in small claims court.

[@douglashill3025]

​@hotrod8915 you legally have a right to ask for all old parts and they have to provide them to you. That way you could see what was done. Not many people know that but the old parts still belong to you.

[@floydboyett197]

F😅 no no he's up in TX KC​@@roz4747

[@abdulghafoor6910]

best jack repair video there is

[@TwoWheelRocco]

Great job thank you.

[@Shoptoolreviews]

Thank you too!

[@DependableAutoTruck]

I have one of the Snapon jacks that low profile 3 ton been waiting 2 years for warranty wish i could get a kit for it

[@robertfredericks2655]

the valve that opens the hydraulic fluid needs a spring and ball bearing ?

[@hishamchohan494]

Hi, yours the only video I've seen that has the right tools for checking Small yellow flash light For checking the channels of ball valves Hook tool for ring removing Magnetic pen#! Too for steel ball removing..

[@TriodeLuvr]

DO NOT TURN THE ADJUSTMENT SCREWS TO BOTTOM OUT THE SPRINGS! I did that on the safety valve in my Hein-Werner jack, and it permanently compressed the spring. There's no way to get it back to the factory setting now. My advice is to leave the expansion plugs alone unless you know there's a gasket or o-ring in there that's causing a problem.

[@luisgalvan8809]

😮😮😮

[@LynxStarAuto]

Then that spring was faulty and on the verge of failing. Or you have debris in there preventing proper fluid flow and operation. The way he did it in this video, is the way all hydraulic repair/rebuild pros do it. If the spring is sticking, you either have a weak spring, or there is junk in there obstructing operation.

[@TriodeLuvr]

There's nothing wrong with the spring, and the areas under the expansion plugs were pristine. Pros do many things that aren't necessarily required because they have to warranty their work and/or avoid the possibility of losing time opening it up again. I adjusted the spring tension so it would lift the front of my V8 F150 without bypassing, and it's still working great a year later. That's all I care about.

[@TriodeLuvr]

I just want to add that the so called "pros" in my area don't have a clue how to fix these jacks. My local repair guy, who has been in the service business for nearly 40 years, sent three Walker-type jacks to a local company for repair. Every one of them started leaking again less than a month later.

[@that11gmc36]

Have a Mac tools transmission floor jack and it’s got air in it and I can’t seem to get it bless out and it don’t wanna work right now! What do you suggest?

[@charleskeith5632]

Thanks! I have had a difficult time trying to get two of my floor Jack's to operate correctly. So now that you showed me how, I will have no problems at all with the rebuilding. Thanks again...... Charles

[@Resist4]

I have this exact same jack which leaks and have been looking for a how to video on fixing it. Any suggestions where to get the rebuild kit, because the link shows it as being unavailable. But I'm a bit confused. You said your jack was leaking from the back O-ring yet you didn't replace it and instead used the same O-ring. So how did that fix the issue?

[@11thhourcustom]

Great Video!

[@coolwaterhubby5208]

Like you’re video, I have a certificate in auto mech and I use manuals as well as watch videos, thanks on new learning techniques.

[@G58]

YOUR

[@DogDaze66]

Ive the exact jack , I finally poured out the original oil , when I refilled it now it does nit lift. On the piston it has air adjust thing on the fill plug.

[@keithjurena9319]

Looks similar to a jack I was given that didn't work. Low on oil, I had clean power steering fluid which is technically hydraulic fluid, right? Anyway, filling it restored function but it leaked..which is why I was gifted it. The valving is identical and far more complex than a simple bottle jack. Is this a fast pump jack?

[@luisaleman8384]

Thank's brother exellent explanation l apreciate, it ,!! God Bless you broh.

[@chuckdubose9082]

How do you know or find proper valve screw setting if someone prior messed with the valve screw adjustments?.

[@joffrejurado3030]

Any suggestion how I can find the repair kit for that red aluminum 2 ton craftsman floor jack?

[@trickydicky6788]

Did I miss something? I didn't see you replace any seals or anything else. So what was the reason for taking it apart in the first place.

[@savage22bolt32]

That's what I was wondering too. Maybe just to make the vid, but I think if I went thru all that trouble, I would have changed the O-rings anyway.

[@aluckyman9308]

it was obviously leaking fluid at the start of the video. should be no fluid leaking at all.

[@lincolncheib]

Excellent!!!!!

[@Shoptoolreviews]

Thanks for watching.

[@dingodyno9016]

will this also help release all the air built up inside it?

[@BSA210]

Do you know how to reset a triggered safety/overload valve? On my 2 ton arcan, the right spring valve is shut compressed. The manual does not provide any information on how to reset it. Thanks

[@RobertNazarov65]

My ram is leaking from the top. Haven’t been able to take the top cap off. Tried a 2” socket but really hard to hold in place.

[@Rein_Ciarfella]

I wasn’t looking for this - it just showed up in my feed. That said, I was very impressed with the amount of information and detail. I researched this a couple years ago and never learned some of the details you included. I repaired one jack back then and tore another completely apart but never got it to work. I now know why - I didn’t realize there would be ball bearings in every valve and must have lost one. I found one on the floor under a door a year later and suspected that was the culprit but never knew until now for sure. I already knew about the metal screen and was very relieved when you caught your misstep and went back to correct that. I did see that you left out spreading the cotter pin ends however. Overall great video and audio quality. Loved the hint about poking holes in the cardboard for the ball bearings. I’ve used that trick for bolts, screws and such for a while and it’s worth repeating for those that don’t know about it. Keep up the great work! Amazed you don’t have a lot more likes and comments on this video. One other thing - finding rebuilding kits for these can be difficult but I found one guy who has an amazing site who not only sells parts and kits but also has a wealth of information on identifying and measuring parts like O-rings, wipers, washers, etc. hcrcnow.com is the most comprehensive site I’ve found on floor jacks anywhere.

[@JustRusting]

Thanks for posting the link.

[@davidayala1974]

Thanks for sharing 🤝✋🤛👍✌

[@Rein_Ciarfella]

davidayala1974 You bet!

[@burlpage5260]

Really appreciate this KZbin video, I have about 6 bottle and 3 trolly jacks I'm going to rebuild now that I know what to expect , and where to get the rebuild kits !

[@burlpage5260]

Also wanted to say for the very few of us that has never explored the internals of a bottle jack or a trolley style type Jack , We all really appreciated the extra time you spent going through and breaking down the phases of the disassembly and the rebuild ,Thanks again !

[@PoteauCowboy]

Best "How To" I have seen....

[@luckyboy34676]

Hey there, can someone explain me plz I have floor jack 3 tonnes one .. by mistake, I unscrewed everything screwed back everything, but it's pad not lefting up at all .whts wrong? No leaks thanks again

[@seloum57]

Hi, what's the size of the first ball bearing you removed ? I lost mine but I didn't find any documentation with the size of this ball 😢

[@kovie9162]

Does anyone know where to get one-off o-rings and seals for floor pumps, specifically the wide one that sits at the bottom of the pump assembly at the opposite end of the large gland nut, without buying an entire seal or rebuild kit?

[@sjbraid]

I have two NAPA Carlyle 3.5 ton floor jacks, and they are less than two years old. I bought them both from NAPA at the same time. One of the jacks has developed a loud snapping noise near the lift cylinder every time the handle is pushed down when the jack is under load. It lifts okay, but this snapping noise is really irritating. The jack is full of jack oil and reaches max height in about 8 strokes. My other jack is nice and smooth, no noise at all. Try as I might, I can not determine exactly where this noise is originating from, and what it would take to fix it. Has any body else had this problem, and does anyone have a suggestion to fix? Thanks to any one for any reply.

[@ricardor395]

Have you done this with the daytona 3 tons??

[@gbush1620]

While pumping the jack, it produced squeaky noise. Do you know why? Its function is normal, do I need to add oil? Thx

[@chrislavigne1212]

I had recently purchased a floor jack but having the issue of it not lifting under load. I checked the fluid level and purged the air by twisting 2 times and pumping 10 or so times and still nothing. Any advice? Or knowing of any shop that does repair them? Thanks great video love the channel

[@Shoptoolreviews]

If it's been recent, then I'd take the jack back and exchange it. Thanks for watching.

[@CorbinAce]

Great job! I have a Harbor Freight jack that slowly creeps down. I'm sure if it is anything like the craftsman? I can handle it. It doesn't leak externally, we shall see. I am wondering if they have a rebuild kit for this jack.

[@Shoptoolreviews]

You can probably find a rebuild kit. Thanks for watching.

[@CorbinAce]

@@Shoptoolreviews Thanks for your' reply, I will check on it today. I have to go out to my shop to check numbers.

[@dm-zx7xb]

@@CorbinAce did you find a seal kit? I can't seem to find one for my hf 3 ton

[@CorbinAce]

@@dm-zx7xb: Sorry I have been to busy with other projects So,,, No I have not . It's called too many projects!

[@dm-zx7xb]

@@CorbinAce I understand! I spent hours searching the web at work today with no real luck finding a compatible seal kit. I would be fine if they even sold just the pump.

[@mikerettig7325]

This is the first video of yours that I have watched but I have to ask are you a teacher of some sort?. Thank you sir very good detailed video look forward to checking out more of your videos

[@Carlos0522able]

How can I get the jack handle for 1.5 tons? I lost mine

[@jr3474]

What sizes are the steel balls???

[@simonsays8935]

On my jack, one of the rear pistons has rust inside on the cylinder wall. What should I use to clean that out of there? Thanks.

[@artsnow8872]

Start with 600 grit sandpaper; then, go to 800 grit, 1000 grit, 1400 grit. Wrap sandpaper around a metal or wood rod. The rust pits don't have to be completely gone. The jack oil film should bridge small imperfections.

[@hishamchohan494]

Hi, this model is different from the ones i repair MEGA SPAIN brands ..but at your video 23:23 a nylon ring and o-ring at outer side? I've seen a copper washer ... A copperwasher is better and add light locktide liquid on the thread

[@dexgrantham698]

What size is the socket you used at 16:03? Link?

[@chriscunningham7972]

I missed place bolt for the cylinder would anyone happen to know. Where to get replacement bolt

[@angelisone]

anyone knows the repair kit for a central hydraulics 4000 lb. aluminum racing jack with item 92782 (harper freight tools? mine is leaking.

[@artsnow8872]

You don't need to disassemble the jack in that manner to change the piston seals; nor, need to use a BENCH VICE. You can do it without the HUGE wrenches by using a large socket on the big reservoir nut. !. Drain the reservoir and turn the jack on its back. 2. Disconnect the two springs. 3. Pull the saddle / lift arm outward to gain access to bent ends of big cotter pin, and bend the cotter pin ends together, for removal of the cotter pin. 4. Lay the jack on its side and put the jack saddle / lift arm in its lowered position. This action pushes the piston into the reservoir. Now, remove the big cotter pin. 5. Push the jack saddle / lift arm to the fully extended position. This action moves the cross-bar away from the end of the piston and allows access to the big nut on the end of the reservoir. 6. Measure across the big nut's flats to determine the large socket, or crowfoot wrench, size which you will use with a socket breaker bar. The old Sears floor jack nut socket is 2 3/16 " (56mm) and sells for about $24. You may rent, or borrow, an axel nut socket of the correct size from an auto parts or tool rental store. 7. Place the large socket (or, crowfoot wrench) on big nut and have someone (or, heavy object) stand on end of the jack handle (to counter-balance the torque you'll apply to the nut). 8. Tap on the tool and big nut with a hammer as you use an impact wrench or long breaker bar to loosen the nut. If using a breaker bar, STEP heavily on the end of the breaker bar ( in a loosening direction) while tapping the end of the nut and reservoir. The nut will loosen easier than you expect. 9. When re-installing the big nut, a good snugging is all it needs. It's only the reservoir cap nut. There is no (or, very little) fluid pressure in the reservoir behind the nut. 10. Reassemble in reverse steps.

[@garylyon9137]

He did forget to show rebending the ends of the cotter pin. I noticed that he had forgotten to insert the screen.

[@thaitichi]

What would be the cause of a squeaking noise while pumping? Which parts should be lubricated?

[@Shoptoolreviews]

If it's a squeak from metal to metal rubbing together, then you should just spray some white lithium grease in each of the joints. You may be hearing a squeak from a hydraulic leak within the jack distribution block. This would mean you have some seals that are bad. Thanks for watching.

[@thaitichi]

@@Shoptoolreviews I'll try that. Thank you for the info and the awesome video!!!

[@Shoptoolreviews]

Good luck and thanks.

[@henrikjonsson4340]

Thanks for detalied video. A Q if you have time. My jack is very slow but holds up the lifting arm and it starts after 10-20 pushes and then goes 1mm per push. When I release the valve for the lifting-arm going down the push-valve pops up = it has air-pressure behind it. All the time it does that. I have one little leak in the push-valve down at the botton NOT the piston o-ring just the cylinder o-ring for it. I have cleaned the channels. Is it going in air there? It is new fluid. How much fluid is needed for floorjack cylinder, is it to the opening and the rubber-sealing laying down or standing up?

[@boosted2.4_sky]

Spooky TJ.. I have a floor jack with one piston not coming back up.. and here's your video 😳

[@816kccutthroat]

The plastic ring keeps the o ring from binding and warping the o ring when it's torqued down

[@squidusn71]

This is good information but a 20+ old jack most likely will not have the seal kit available anymore. My 22yr old 3ton Alltrade floor jack started leaking and the seal kit was discontinued.

[@The5granddaughters]

Go to a hydraulic shop and they can probably match up your O-rings

[@josephmeredith2204]

Ramalama ding dong Doo! Thanks

[@hawaiibikekahuna8204]

What model number is that jack?

[@nilolee2426]

I have 12 years old 3 ton arcan dual piston and I’m losing height of 1” per hour with load but there’s no fluid leaking , any suggestion? Thanks

[@bassslayer9082]

Might be some kind of oring, maybe near the pressure release you use to drop the jack down, since no fluid comes out of there anyway

[@Shoptoolreviews]

Definitely leaking past a seal or o-ring. Needs a rebuild or replacement. Thanks for watching.

[@dyardsale5475]

what a great video, if you knew what those screws and balls were for it would have made it better. I think one is a pressure release, don't know what the others are, it's too mysterious.

[@crea8ivjr]

I wish I would have seen this 8 years ago I could have fix my grandfather floor jack 😢

[@jorgevalladares6872]

What socket size did you used to remove the nut

[@Shoptoolreviews]

I don't remember, it will change from jack to jack. Thanks for watching.

[@jpcheco]

Best bet is to use a pipe wrench.