Importing and modifying a new mini excavator from China

[dfkrug]

If you haven't installed the extension for hydro tank, could you possibly get the dimensions for me? I bought an AGT L12 last week delivered in Ohio. A few days later I lost all hydraulic pressure when going down the ramp on my trailer. Hyd fluid was full, so I looked at the suction line on the tank. It is on the end at the lowest point possible. looks like a design flaw, and your post confirmed it. Thanks.

Welcome to TBN, OLDRUSTY

Pix of the problem and its solution would be interesting.

 

[dfkrug]

a hammer it would expedite wear on machine alot. If really needed one I'd prob be looking at a roller.

I have tried the hammer, and tho it works, I would not use it on a machine this small and light. Most pins are only 25mm. I have seen what breakers do to skidsteers, and they have pins twice as big.

As for a sheep's foot roller for compacting, that is how they do it with bigger excavators and backhoes, but our tiny machines have too little weight to be effective at that kind of compaction, IMO.

 

[Kyle_in_Tex]

The numbers are viscosity of the oil

32 - cold weather

46 - normal weather

68 - high temperture, think steel mill applications

32- Michigan

46- Kentucky

68- Oklahoma

90W-120 - Texas (just kidding, it's gear oil)

 

[oldrustysteel]

Welcome to TBN, OLDRUSTY

Pix of the problem and its solution would be interesting.

Thanks for the welcome! I will get pics and try to upload soon, I am having difficulty navigating the sight. BTW thanks for the very informative posts you and others have contributed on the China diggers. Good info is gonna make a huge difference as we try to improve these little machines.

 

[diabeticpilot]

If you haven't installed the extension for hydro tank, could you possibly get the dimensions for me? I bought an AGT L12 last week delivered in Ohio. A few days later I lost all hydraulic pressure when going down the ramp on my trailer. Hyd fluid was full, so I looked at the suction line on the tank. It is on the end at the lowest point possible. looks like a design flaw, and your post confirmed it. Thanks.

I had the exact same issue! Driving it off the pallate and down the ramp caused it to stall out. I had to rock it back and forth to get hydraulic pressure again and then got the bucket down to keep it level as I drove it off. Left some marks on the driveway but got it off.

The extender is 19cm long and 4cm wide. It is threaded M on one end and F on the other so it can sit in-between the inlet and the filter.

EDIT: it is 19 CM long and 4 CM wide. Not mm!

 

[oldrustysteel]

I had the exact same issue! Driving it off the pallate and down the ramp caused it to stall out. I had to rock it back and forth to get hydraulic pressure again and then got the bucket down to keep it level as I drove it off. Left some marks on the driveway but got it off.

The extender is 19mm long and 4mm wide. It is threaded M on one end and F on the other so it can sit in-between the inlet and the filter.

Thanks! I don't know if they would send me one or not, I bought my L12 from a private seller w .2 hrs on it. I read somewhere about someone asking the manufacturer about parts or something and they claimed they never made it.

I will try an email to them but I am not optimistic. thanks for your help!!

 

[Fredrik]

So I've got a ? for anyone who might know. Can pilot operated controls be switched from ISO Ex to SAE Hoe controls? Ive narrowed down the companies to import from but all their controls are ISO. I'd like to have SAE since I'm switching back and forth all the time . Any help would be appreciated.

 

[jaylast]

Yeah man, (at least with pilot controls I've seen up to 2ton) it's same as with non-pilot controls, you can just switch the hoses around that go from valve stack to the cylinders.

The control side of valve stack (whether mechanical or pilot actuated) remains in place.

The pilot controls are just valving/hydro added to main valve stack in leu of the mechanical levers.

 

[Fredrik]

I've switched non pilot hoses easy peasy. Was wondering if pilots were the same. Thanks J.

 

[jaylast]

I don't know if they would send me one or not

Are you aware of 'chinese mini excavators' FB group(s)?
There is alot of info on there about the L12 issue and fix.
There are some US posters that may have or can get the part also. Danni Zou or George Zou I think, check it out.

The adapter thingy below