Your videos are some of the best on KZfaq - your knowledge and attention to detail are head and shoulders above 99% of every one else.

You have my admiration for your willingness to get into the workings and take everything apart to find the root causes of failures. Then to put it all back together! Makes me wish that I was healthy enough to emulate your work, Great Job!... Looking forward to your next post.

do not envy you doing the work and the cost! however it is entertainment at its best. I hope youtube compensates you well. it really looking like you have to split the house and the undercarriage to change that giant seal... >👍👍

The pistons do not have to go in any order. Yes, you would feel the slop. Another good test is to cover the hole in the bottom of the barrel/block with your finger and see if it pushes air and pulls vacuum when you move the piston in the bore. Usually there is a small hole in the middle of the piston slippers that is used for lubrication, blow air into the back of the piston to make sure that there isn't any junk in there. I rebuilt pumps and motors for a few years and work at a shop now where we do mainly cylinder work. Hit me up if you have questions.

Just what I needed! Was wanting something quality to watch!

I’m here to see Charlie

Super excited for this series. You killed it with the dozer. Can’t wait to watch all these videos and justify making my own questionable excavator purchase.

My Shepard is just like yours! She just wants to play all the time dropping her toys into whatever I am working on.

There may be a lot of your subs who are not in the business but just love watching old iron being revived. I did actually touch a Kubota mini parked in my backyard when the sewer pipe was being replaced. I probably touched an old road grader in the late 40’s working on our gravel road. Keep wrenching!

I'll bet you were happy when that hole in your shirt turned out to be the perfect spot to mount your mic. 🤣😂 Seriously though, Matt, that Dozer came out mint! I can't wait to go on the adventure of rebuilding this machine. I love dozers but these machines are my favorite! Thanks Matt! And be careful! 🤩😀

Excellent editing , excellent work , love your style , “ just the facts please”

I love how you tear into these daunting projects with so much confidence..

It is possible to repair that part that the seal surface was messed up on, however the cost may be as much as the new part: Flame spraying is ideal for surfaces like that. It is often used to repair galled surfaces on shafts where bearings rode. I look forward to following your adventures with the excavator as I did with the Cat.

That sound of that oil and water running out reminded me of the day after having subway for lunch then Taco Bell for dinner. Charlie is a good girl!! Give her love for me and play lots of ball with her. Can’t wait until the next Charlie and Matt show!!!

New Project! Yes!!

Matt, I want to see the full restore of the excavator. It will be great.

I like watching your videos on this equipment because it's unusual. Everyone has videos on getting an engine to run or doing standard automotive work. Very rarely do you find rebuilds on the stuff you get yourself into. And you follow the manuals to do it correctly. Good job.

I like your dog. Nothing like a pesky fido when your trying to work.

Nice video Matt, thanks in taking time to record edit and share.

Always good to see you Matt!

For cutting off stuck collars/inner races i find its better to grid out a semi-circle rather than cut a slot at an angle. Just use the blade in the same plane as the collar and work at it up and down until the material is thin enough to crack. Its much harder to cut a slot at an angle without damaging the part you are keeping, working in the same plane you can get all the way up to any flange, and you can see the crack when it happens.

Matt, intrepid is the WORD!!! Holy smokes, even with a manual this gives me the heebie-jeebies!!!

Hey Man, enjoying your rebuild of that beast! Looking forward to more videos.

Here we go. Let's dig in brother

Out of everything I subscribe to here on KZfaq, these are the videos I look forward to the most.

You are the best! I'm glad that the dog is there for support. So many parts. It looks like you may have saved it just in time before more damage was done. Once everything is clean and inspected you should be in good shape. May the force be with you!!!!!

Cutting disc falls off angle grinder, says nothing. 😂😊

Great start - maybe it would be an idea to invest in some tools for making/crimping hydraulic hoses yourself? it seems like this one will need alot of new hoses before it's done

Actually looks less complicated than the D4. Most of the wear is just from sitting water stuck inside the housing. Very interested in seeing more of the rebuild in the future.

Off brand oven cleaner is an inexpensive degreaser. As usual I’m amazed at how much you are able to take on and finish.

Matt, you are so brave. I pictured the springs flying everywhere! Lol Take care

On our way, fantastic! God bless the project Matt! We luv being a long for the ride. Hope you get some compensation from YT.

Excellent video quality. 👍 Your dog reminds me of when I had a black lab. I simply existed to throw the ball. 😃

Learning a lot by watching you. Thanks.

Much better video editing and commentary. Improvement.... I look forward to seeing most of the mechanical parts on the excavator. Glad you are continuing the videos. Entertaining and Instructional.

Well done with the progress it's good to see Charlie making sure that you are taking regular breaks whilst working so you don't overdo it everyone needs a four legged furry work colleague to help your well-being keep up with the great work looking forward to the next video

You have, I my opinion for what its worth, made some good decisions on what to replace in the swing drive. It is a good idea to mark referencing/ witnessing marks on every thing that comes apart for any reason on everything you can, that practice has saved my bacon numerous times over the years, the other rule in hydraulics is keep it clean on reassembly, if you think you you have clean, clean it again, especially when working on spool valves, the ole boy that trained me in/on hydraulics was a clean freak. You are going to have an awesome machine when you get this up and running again, looking forward to this series, thanks for the update.

1:45 - paying the ball tax. Good man.

I'm living my life vicariously through Matt's rebuilds. This way my HOA won't yell about an excavator

Hi, you said you didn’t know anything about excavators in your earlier video. Well you sure know your way around the gears and hydraulics and everything else as well. And it’s great to see that you take your safely as your number one. You are one very knowledgeable guy. 👏🏼👏🏼👏🏼👏🏼👏🏼👏🏼

Looks like fun... The whole thing Looks pretty complicated for just a swing motor.

I took it upon myself, to help you of course, to post a poll. 100% of the people demand that you paint it purple. Please don't let us down!

You are going to have a really nice unit when done.

Thanks for sharing you are definitely braver than me I wouldn’t want to rebuild any of those pumps I’m not good with that stuff and I have heard horrible stories lol

Matt your research skills are phenomenal. Keep on truckin.

Oven cleaner is fantastic for doing motors,Spray on Leave overnight times it'll even remove paint

Thanks for taking us along on this adventure.

I am so glad our company just does short term leases and we get new equip delivered each year or so, I cant even imagine the down time on this type of issue. Plus we got rid of all the mechanics on staff, not that they could pull off more than a grease job.

I think the dog thinks you're all work and no play.thanks for the video

Good video. I new that was going to run in your arm pit I’ve had it happen so many times but you remained calm

I have a feeling that this might be the start of another complete rebuild of another piece of equipment.. Looking forward to many videos of this one !!!!!😀😀😀😀😀

you might consider using some scotch bright on those pins and bores to remove surface rust and raised burrs, just a thought.

You are brave for taking on rebuilding this unit, but you will save thousands from sending it out. love your thouroghness

Oven cleaner is the cheapest way to degrease stuff and it works great 👍🏼

I still say- your blithe assurance and confident progress belies your naivete etc....your sensible approach and sure luck are a bonus...!

On that planetary the reason they want you to mark the pins is because they are usually drilled after instal. So the holes will most likely only line up on the pin that was in that particular hole and only in the orientation it was originally in. So marking with a grinder on the housing and the pin before disassembling is a must.

Degrees inside of the slew ring. And a good wash out and fill with some oil And cover the hole while working on the slew motor.

I’m enjoying this a lot thanks for posting

Good thing about bearing is that their strength is also their weakness in that if you put a weld over the width of its border, it cracks. Do that on both outer and inner ring and it comes loose. That's when you can clean everything up, cool the axle (dry ice is nice) and warm (there are bearing warmers out there) the new bearing and it should plop right on. Also, 21:18 - cute robot head you found there.

Thanks Matt for inviting us into your barn shop. Great videography! Nice project. Always wondered what was inside those excavators . Thank goodness you have video and manuals to refer to to put Humpty back together again.

Oven cleaner is the best degreaser. Plus it helps with rust

You must have big brass ones for jumping right in on the hydraulics! Hydraulics and electrical are my two worst things to tackle, I envy you right now the way you just jumped in head first!

Really interesting video Matt, sure with your approach, everything will be fine!

I am in awe of your technical skills Matt 👍

Yes, it definitely looks like a big giant complicated mess! You have more guts than I do tearing into that thing! Kudos!

Great video as always. Thanks for sharing.

Met a suggestion for you , get a three ring binder with plastic sleeves to put your repair manual in it to keep clean and in order.

Brave man to tackle this project. Great dog!

This update just made my day!

Your blithe assurance , calm attack plus good ENUFF luck has been your bonus- so far..! Good luck

Nice to see the canine help early.

Very good Matt. It could have been a lot worse. Looking forward to the next vid.

I don’t know if you get credit for multiple watches but count on me. On my EX there is a plug on top near the boom cyl. to fill the grease for the slew gear. The bottom cover you took off is to drain/clean. I believe it’s to be filled with grease vs oil.

It is a pleasure watching you work with such precision and detail!! Thanks for sharing

This is going to be a brilliant series

Seems like such a simple thing to spin the machine. But the device needed to do it is so complex.

There shouldn't be any water in there only grease that spring you found is of a previous leak (bottom seal) you should clean all that out with diesel and petrol mix and blow it out with power washer there should be nothing in there only clean grease and make sure you seal it with gasket sealer when refitting the swing box the water can get in through the swivel joint as well check the seal on it its visible from outside the machine its like a rubber boot it keeps out water and dirt. Good luck with it 👍

It’s an absolute pleasure to watch your videos

It's always a good day when Matt drops a new video. Thanks, Matt. BTW, phone video quality was on par with the other camera.

Хорошая работа 👍

I love the "ooh that looks important" 😂

Great video. Thanks for sharing.

great video, matt. i look forward to following you along on this rebuild

a lot of work, well done.

great Video Matt.

Very interesting and and impressive work you do - thanks for charing!

Looks like Charlie the Dog needs his own channel...the like I gave is half his!

Loving this great work Matt

Great work Matt always very interesting 🦘

darn good job, great to see your new one pop up, excellent to follow along and the enjoyment of sharing with us.

Best Teacher of knowledge on big stuff , with small parts

Looks like a jig saw puzzle Rather straight forward and Happy that you do have a lot of salvageable parts. I am Looking forward to more,, Thanks for the video..

Whoa ho, here we go again, anticipating lots more.

I see your dog is as helpful as always.😃😃

Love watching your videos. Brings back good memories of times when I was younger and would tackle repair jobs like what you do.

I just rebuilt the shuttle shifter on my Case 580SE backhoe. What you're doing makes that look like child's play. Good luck getting it all back together.

Good job. I am looking forward to seeing the future rebuilding videos.

Great job I think you're right about that seal hydraulic pumps are really hard on you can remember things like putting it back together and stuff I used to work at a hydraulic pumps it's very difficult good luck to you

Nice video Matt! Good to see you are into another rebuild. I enjoyed the D-4, and this one looks like a real challenge too! Good luck with it! 😀

quality content Matt , big love from the UK dude