I just bought me a mini Chinese excavator last week. I've been really appreciating your videos. People have to manage their expectations with these machines. I bought mine to replace a shovel not to replace a 2-speed kubota.

@thegarageconnection

5 ай бұрын

Exactly my thoughts. You go to Harbor Freight fully expecting a Harbor Freight quality tool.

@petereriksson4405

4 ай бұрын

Same here. Its tiny, but if i would have to shovel the same amount by myself i would never do it. I have an electric wheel barrow to transport dirt and gravel around, its the same with that thing

@olddirtyburt7522

4 ай бұрын

@@thegarageconnectionsome tools are better than others. Never will I buy snap on. Don’t need it.

The coupler between engine and pump is not really for damping vibration but more to compensate angular and radial misalignments

Your videos are showing up on all of the Chinese mini excavator sites now. Great job! Keep growing!

Very informative, thanks for taking the time to put this together. Looking to pick up one of these machines in the near future.

Cam, i believe your timing on all these excavator videos was perfect. Your knowledge helps so many people understand their equipment better, i would be surprised if one of these companies hasn't used your videos to sell their products .. I can visualize them sending you just about 1 of everything for review. That is my hope anyway because you are so informative, which makes it easier to pull trigger for purchasing. Good luck. Keep the video's coming. I see them all over fb groups. Cheers from michigan

Thanks for highlighting the importance of filtering and cooling hydraulic fluid!

You are an awesome teacher! Subscribed!

What an absolutely fascinating video. Even if I had not been interested in the topic, I would have found this content absolutely riveting. The content is perfectly paced and very, very informative...

Great video! probably the best one I've seen on the topic of mini chinese excavators. Bravo!

@thegarageconnection

4 ай бұрын

Wow, thanks!

Great information...I made my own machine....also got annoyed it went so slow....I had 2 single acting spool valves left over from another project..I plumbed these up to switch the drives from parrellel to series....get double the speed,just can't turn,but don't care as I'm just moving from one place to another...thanks for the great channel.

I have no idea what you say as I don't have any background knowledge. I have a Chinese mini excavator. Thanks for sharing. Much appreciated

I'm building a skidsteer and I've seen a lot of very informative videos to guide my design. But I have to say this video video definitely shed a lot more light on my direction. Thank you for this!

@smca7271

16 күн бұрын

I made mine, its a trade off between power and speed (and its almost impossible to change once your down one track)

Keep this stuff up, love it.

Dude, love your videos on these. Mine was just delivered and this is so helpful. I’ve used a lot of the big name brand mini excavators and they are all slow. When you’re in a tight area, as these often are, you don’t want a super fast, twitchy machine.

I'm really enjoying watching you take your machine apart so I dont have to 😂 I mean, i know i will eventually, but this insider knowledge is extremely valuable. I'm currently waiting on a call from a guy, hopefully I'll be owning one before the end of the week.

great video Cam, appreciate the time and thoroughness. looking forward to more.

Your video is awesome. I just picked up a H12, and have learned so much from you. Definitely interested in any upgrade packages you come up with.

Just what I needed. I am new to this (bought a Chinese 2.5t), and love this excellent explanation, more explaining the "why", or here "why not". Thanks you!

@educationaltvshows9950

2 ай бұрын

Final Price to port?

@maxg4958

2 ай бұрын

@@educationaltvshows9950 30k AUD. It is an electric :)

Mr. Cam, first time "Tuning in" .l just got to subscribe because when you mentioned about " digging holes in the back yard & pissing you Wife Off ", l knew l had to join your "Adventure 's & Know-how ". Thank you Sir for the Excelent vidio and happy safe "monkey-wrenching ". Best wishes with all your endeavours.

I am working on fitting a hydraulic filter into the mix right now. And have designed a quick attach with tilting head too.

very educational video!

What can be done relatively easy is adding another pump with half or the same flow with electric 3/2 valve for adding oil to the other pump (high speed for everything) . From there on only need one size larger pressure hoses and slightly bigger 5/16" or 3/8" hoses to and from the swifel joint. In normal working with straight travel both travel motors get half flow. So that would do. The valve body can handle it and the swifel and travel motors can handle it too.

Great information. I threw you a sub to help you break through the magic 1K.

@thegarageconnection

5 ай бұрын

Thanks for the sub!

I'm looking forward to getting to work on my excavator. It will come any day now. Thanks for your videos! They are helping me out a lot!

I really appreciate what you do and your videos. I recently got a Hightop HT10BZ and it looks very similar to your machine - so your videos are nicely applicable. I had heard of the oil heat problem and I ordered mine with a factory installed cooler. I think it is standard on the BZ model. I do want to add a hydraulic filter and I am looking forward to your video and/or parts kit to do that. Please keep up what you are doing. It is GREATLY appreciate.

Great video. I also own an H12 and you are spot on with your engineering analysis. Please look into the overdrive issues with the track motors. The digger will accelerate past full speed when transitioning onto a slope with enough slope, giving the operator an “oh, crap” moment. Pulling back the track controls fully will throttle back the track motors. I believe there is a mod to correct this. Please comment.

I'm enjoying your video very much. Thank you for sharing your knowledge and experience. I recently put a $20 crossport relief valve(VAU-G1/4) on my mini excavator swing motor, and I got a pretty satisfying result. I'm planning on doing some more mods. Some simple mods seem to be very cost-effective. As you know, Chinese mini excavators are simple, and parts are cheap. Please keep up with the good work!!

@jodieadair

5 ай бұрын

What does the crossport relief valve affect?

@jodieadair

5 ай бұрын

I'm assuming it dampens the cab rotation?

@thegarageconnection

5 ай бұрын

They’re nicknamed cushion valves, and yes they are designed to take the shock load out of large moving hydraulic systems that are swinging big masses around.

@stevewesterfield7452

4 ай бұрын

Great video

Interested in that cooler installation video! Got a Rippa 319 on order about a month and a half out so hopefully you’ll have it by or around then!

Great information thank you.

Let me see if I got this right. If I am ordering a pump these are the parameters I need... Pressure Rating (PSI): 2500 max working, 4500 max breaking GPM (Flow Rate): 6.47 CID/REV (Cubic Inch Displacement per Revolution): 6.8 milliliter Rotation (CW or CCW): CW Flange: SAE #2 Shaft Type and Diameter: 9 tooth spline, 5/8" diameter RPM: 3600

Nice job on the video we will keep watching good in info

Great video! What filter do you recommend and where would you install it at?

way to break it down brother!!

Great video thank you, Would it be possible to do a video about an oil cooler and filter installation for the H12? There are plenty of them available but no videos online at all.

@thegarageconnection

5 ай бұрын

Yes, soon very soon I promise

Excellent -this series gives me so much more confidence owning one of these things. My Briggs and Stratton started surging (rpm’s go up and down at same throttle). I hear it’s the carb jet needs cleaning. I’d like to see see where and how to order parts and attachments. Seems like the auctions have those too but I can’t seem to find a good online source.

@thegarageconnection

5 ай бұрын

Could also try enriching the mixture a bit if it’s hunting like that

I can walk faster than this thing moves. It's ridiculous! I've contemplated putting the mini excavator on a little trailer just to move it around at the work site. Thanks for your research with this issue. Very helpful, Thanks!!

@LivingOnCash

Күн бұрын

This is what I do. I have an old Jeep Cherokee that I got really cheap and a small trailer. I move the ex around with it as it is quicker to drive the ex onto the trailer and tow it than it is to try to drive the thing around my 5 acre property.

Just enjoy running your little excavator, even if it takes awhile driving, enjoy it !

GREAT VIDEO! I am trying to troubleshoot a hydraulic issue with travel. When driving on or off, either direction, trailer with ramps my mini stops moving forward or backwards. I can still operate swing and bucket/boom controls but drive does not work. When I level the machine out or lower the angle it starts working again. I have checked fluid level and everything I can think of. If you have any thoughts on this that would be great!

Great information! Are you planning on installing a hydraulic cooler? If so I’d love to see how you do it. Thanks for all your content on these mini excavators.

@thegarageconnection

5 ай бұрын

That's the plan!

Great video! If you had to choose only one Chinese model, which one would you choose? By the way, you could build a business on this. You could specialize in retrofitting one Chinese model. I've seen such a business with a motor lawnmower, where they replaced some quality parts to make the cheap Chinese machine more reliable and better.

Video on installing Hyd filter and cooler yet? I'm not even using my brand new H12 until I install your filter/cooler skillsets into it. Thanks

@thegarageconnection

5 ай бұрын

Coming soon!

Is the second speed on 2 speed units accomplished by using a planetary hub? Seems like all the 2 speed units have what looks to be a planetary hub. Also the hydraulic motor is not in a vulnerable location.

Thought I would let you know my AGT industrial H15 recently purchased has an inline hydraulic filter.

@MarkBean-vy9qc

5 ай бұрын

Cant give the part # agrotinddustrial reply "the manual for this machine is not available at the moment, thanks for your understanding".

Can you tell me where to get replacement gaskets for the pump I have a miva va 15 mini excavator

Sometimes when I have only one drive motor fully engaged and then just slightly crack open the valve for the other side, it goes into some kind of "hyperspeed" mode which seems to double the speed of the fully engaged motor. Do you have any explanation for that?

Where should i add the filter ? Return line or output

I need help finding a replacement pump for my qs12r the pump got hot and its not spewing fluid out of the top side of my fluid resevoir..

Does the pump have to be a clockwise rotation or can I just install it upside down so the fittings would be on the correct side if it is a counterclockwise rotational pump?

@thegarageconnection

4 ай бұрын

Correct it can be flipped

Cam, excellent video, and great explanation on the hydraulic motors. Hope you do one on adding a hydraulic cooler/fan soon.

@thegarageconnection

5 ай бұрын

It’s in the works. Biggest headache is the wait for stuff from China

By the way, you're Coast Guard, right? You didn't work sector lower Mississippi did you? It feels as if I've seen you before. I was a tow boat pilot for years.

Mate great video , i bought an excavator but have no experience it his around 1700kg / 3500pounds , but theres something puzzling me . When im digging, if im doing too much effort the excavator goes OFF , i wonder if my bypass is closed, the machine is also super quick on the levers . D902 kubota on it

@thegarageconnection

5 ай бұрын

My guess is your relief valve is set too high. Overloads and stalls the machine.

@user-nh4pq2rs2h

5 ай бұрын

@@thegarageconnection that's exactly what's happening, ive been doing some research on but as I said first time newbie , go unscrew the relief valve pin slightly, correct?

Now can we make these single speed motors into junk and find a 2 speed that fits? And plumb accordingly? I want to do this with mine and i dont even have it yet. Ever thought about doing an upgrade?

Hi I like your website. What if the excavator breaks down in the field. Is their a way to move the machine if the engine will not start. Thanks

@thegarageconnection

5 ай бұрын

There is not a freewheeling valve on the machine but I suppose there could be

Very interesting! I have a micro excavator that gets slower and very weak when the oil gets war. It has a 4,8cm3 pump now, will i gain anything by changing to a larger pump, like a 6cm3? I dont feel like the excavator gets weaker when its warm, just the tracks. I have to assist it going up inclines with the excavator, but only when its warm

@thegarageconnection

4 ай бұрын

Sounds like your pump is starting to wear and the fluid gets through the worn areas

@petereriksson4405

4 ай бұрын

@@thegarageconnection oil gets thinner when its warm so it sounds resonable that it would leak more. I will have to dismantle the pump and have a look at it. Thanks for answering!

Does this use hydraulic fittings that you can pick at a local store or are they something special? If they aren't readily available, how do you replace the hoses?

@thegarageconnection

5 ай бұрын

The hose fittings are not well known or prevalent in many US hydraulic hose shops. Best bet for ordering replacement hoses is to buy custom lines from online suppliers

I like to add a drone to mine !

So, did i miss something on determining the stock replacement pump sizing? Would i just match the fitting size/type, the #2 bolt up flange, 5/8 9 spline shaft and pick a GPM range of at least 7?

@thegarageconnection

4 ай бұрын

Nope that pretty much nails it

@mikedesilets3324

4 ай бұрын

@@thegarageconnection Perfect. I may pick one up to store as a spare. Thank you.

Cam do you remember when you took your pump out if you could turn the shaft with your hand my pump was too hard to turn by hand I had to use a pair of channel locks to turn it I don't think that's normal I think my pump is going out

@thegarageconnection

4 ай бұрын

Correct that is absolutely not normal

Don’t feel bad Chinese excavator owners. I own a 1992 IHI IS-25GX3 2.5T 18hp diesel excavator. It’s top walking speed is a whopping 1.2mph down hill with my wife pushing it. But I would still rather own it then any Chinese excavator.

Do you know what PSI the pump is rated for?

@thegarageconnection

4 ай бұрын

I believe breaking pressure is north of 4500psi, system is designed to withstand 2500psi. Pumps have no ability to regulate pressure

what if you increased the size of the drive wheel, could the final drives handle the torque?

@thegarageconnection

5 ай бұрын

They could but the tracks might not

Cam, you know I try to comment on every video to keep your algorithm up but I have to know, what do you do for a living? I'm assuming engineer. Im 55 and can rebuild a 350 small block in my sleep but you know more crap than 99 percent of my friends and I think they are pretty intelligent. And, thanks for another good video. Anyone thinking about buying one of these I would say this is the only downfall of the machine. They are laughably slow but once they get to work they are a small beast.

@Failure_Is_An_Option

5 ай бұрын

It's just hydraulics. Everything is Lego (standardized). You have a perception challenge. That which you do not understand does not affect the complexity of the world around you. IE: It neither increases nor decreases complexity.

@thegarageconnection

5 ай бұрын

I am a 1st class machinery technician for the US Coast Guard. I grew up on old Jeep CJ’s but marine engineering is my passion. I currently instruct on German made 9,925hp marine engines.

@pigthesidecardog7442

5 ай бұрын

Thanks for responding. I appreciate it. @@thegarageconnection

What kind of hydraulic fluid should we use in these? I can’t find anything in the manual.

@thegarageconnection

5 ай бұрын

AW46/ISO46

Don’t these machines have a gear and a chain drive in the undercarriage assembly? A gear change could increase the speed also.

@thegarageconnection

4 ай бұрын

They do not. Direct drive off the motors

Put me down for a kit! I have a qh12 hopefully they will be the same.

@thegarageconnection

5 ай бұрын

I’m dying to get ahold of a QH12 to prototype a kit

@richieapalmer

5 ай бұрын

You can borrow mine😊

@thegarageconnection

5 ай бұрын

@@richieapalmer gladly. I wish I had one local to reference

How many teeth are on the shaft

@thegarageconnection

4 ай бұрын

9 spline 5/8

3.14mph is hauling ass on this thing.

Put in 60lpm pump in

@educationaltvshows9950

2 ай бұрын

How it affects other system? All movement goues double speed? Not comfortable?

That pump wear already is depressing.

@thegarageconnection

5 ай бұрын

These machines really need a cooler and filtration

@tomd864

5 ай бұрын

They sure do, thanks for sharing your knowledge with us. I've certainly learned alot from your videos.. Can't wait until your cooler and filter system is for sale. I'm holding out to change my hydraulic fluid until I have a filtering system.@@thegarageconnection

@njipods

5 ай бұрын

@@thegarageconnection can we get away without cooling if we monitor temps?

@thegarageconnection

5 ай бұрын

@@njipods technically yes, but you can’t escape the contamination and abrasives swirling through the fluid

Are you in some kind of a hurry to move around? What do you want to do, race it? Be satisfied with 1 to 3 MPH. Get a full size machine then. While some wheel excavators have a maximum travel speed of up to 22 mph, a track excavator crawls along at 4-6 mph.

@educationaltvshows9950

2 ай бұрын

1mph is unbareable. 3mph would be great! Big difference working moving stuff in yard