Chinese Mini Excavator: Walkthrough of the AGT QK18RXS-C with Cab and Air Conditioning!

Chinese Mini Excavator model QK18RXS-C
Single Cylinder Gasoline Engine

Quick walkthrough of this model and its PROs and CONs

[jonathanyates]

'where I'm probably going to get arrested'...
🤣
Love it

[jtsokiehobbyandadventures]

Glade to see someone else's showing how to fix these machines.
I bought the QK18KXS-C. It had the diesel motor. It weighed 2450. I did mods on the one i had. If you are a larger person this machine is not for you unless you buy with out cab. Im 6ft 300 pounds. Thats why i sold it. I moved ac to back. If you wount to see mods goto jts okie's hobbies and adventures. I did put 1 wire alternator on the diesel model 7222 kubota engine

[ErinBolton-xh]

Love the content. Im waiting for a step by step or 3 part series on swapping in a HF Predator motor and all the controls.

[JustinDavidow]

Too funny, i just picked up an exact one of these a month ago! Only difference incan see is that the unit I grabbed has a "slide" window for the hydraulic tank cap access rather than the circular door pictured on this one.

I have not get had a chance to do anything with it yet except drive it off the trailer.

Looking forward to seeing mods and upgrades you do!

[LBPlayer]

Really looking forward to what you come up with for this machine. I’ve had the same one for about 4 months now and I like it, but there things I wish were better. The AC fix you’re working on will obviously be great, but the number one thing I feel I need is a flow control valve setup particular to this machine to smooth out the operation. This thing will just start bucking like a wild stallion out of nowhere. I feel I have enough seat time in it now to know that it’s not operator error and throwing the controls too hard.

The biggest safety issue I have with this machine is the CO in the cab, the exhaust setup is just absolutely wrong for a machine with an enclosed cab. The “exhaust pipe” sticking out the back isn’t actually connected to the muffler, it’s just sheet metal screwed to the heat shield. The result is a massive build up of CO in the cab. When I tested it, with the door and windows shut and running at idle, the CO level in the cab hit 250 PPM in under 2 minutes and was still rising quickly. I tried to correct it by having a 6” pipe welded directly to the muffler and it helped quite a bit, but the CO level can still get up to about 30-40 PPM when running at idle. A solution to this would be awesome, if I can’t solve this problem I’m probably going to just have to ditch the cab, or at least just remove the windows so the CO doesn’t’ t get trapped inside and eventually kill me.

[daviddamitz]

Another informative video…Thanks for sharing…

Do you have an ETA as to when the cushion valve hose kits will be available on your store website?

[coppermountainstudios]

Have you also figured out a fix for the exhaust not actually being connected? The tailpipe is just riveted to the shroud 😃

[rrussell]

i think i fixed the jerkyness with springs on the actuator buttons under the rubber shroud on the pilot controls . i cut a 9/16" x 1 3/4" compression spring in half and slipped it over the button, it gives resistance to the controls. please comment if you think it is going to cause an issue, i did this on a LS15r

[TB-nhxw]

How do you get in contact to ask ordering questions?
Filled out my profile but I am getting an IR - 10 excavator I'd like to make sure I order the right hydrualic cooler kit for it?

[simplesimon]

Nice vid!
My research is showing that the 420cc engines are generally 8-10A charging circuit - still can't run the A/C, and can barely run a cooling fan and still not lose battery by the end of the day - especially with the steady drain of the pilot solenoid which seems to be about 1A (but I've not definitively tested that yet).

P.S. Was it jumpy at low throttle? I run my H15 at around 2000 RPM or so unless I'm actually putting load on, or travelling.

Speaking of H15 - is this unit's pump set up the same (or at least similar)?
I'm still looking for the pump specs to try and source an upgrade that will handle both systems.

[OP-]

How easy is it to remove the cab and AC on this model? The only two models at my local auction that had a swing boom and hyd thumb was this model and the DM12-C. I went with the DM12-C since I didn't know what's all stationary with the cab. Plus it had everything wired to the key, no extra battery shutoff.

[Kevin-ztj]

That Chinese made A/C unit not gonna add more counter weight? 😂 couldn’t help myself. I’d agree with another commenter, AGT’s are pretty finicky and a little jerky on the hydraulics. Another good video Cam, could we get one explaining what each of the letters of the model numbers signifies?

[hxevngg]

Gas engine and a cab, 2 strikes already.

[TrexS]

My 2-cents = that gas tank is in a bad spot... I have a QH13R with the cab and I will be installing gas tank with an accessible fill area. Also having to notch out an area for a belt can't be that bad as the engine is only a 10hp.

[garretlockburner]

Agt sure seem way more jerky than other brands.