kubota grill

[clee4020]

I am modifying my M9540 grill to keep limbs from damaging the front of my tractor. I am using a Lincoln sp 175 mig using CO2 for gas. Been using this machine for several years with no problems, but today when I pull the trigger I hear the gas come out for few seconds and then gas barely comes out. I can let go of trigger and the same thing happens. Any suggestions?

 

[E/S]

Sounds like low supply pressure, did you check the gauges ?
I am looking at doing the same to my M85, post some pictures.
E/S

 

[clee4020]

Gauges appear fine and pressure remains at 18 psi.

 

[escavader]

thinking you might have posted in the welding section,i thought it was a post about your grill
ALAN

 

[clee4020]

Would have posted in the welding forum, but I orginally posted with my blackberry and the welding forum wasn't an option. Anyway, don't see why it matters. I thought it fit into the customization forum since I am customizing my grill.

 

[Argosy]

Did you check the tip to make sure the gas passages are clear?

 

[clee4020]

Yes, even unscrewed the brass tip to make sure. Gas comes out like it is supposed to at first and gradually goes to almost none at all.

 

[E/S]

Sounds like dirt in a orifice, try blowing back through the line.

E/S

 

[Gary Fowler]

You have either a restriction in the line, maybe a kink in the line OR a bad regulator or gas flow valve. Try removing the regulator and check the inlet to the regulator. Most have an inline filter that may have some trash built up although I have no idea how trash could get into the regulator unless you left it off the tank and spiders or dirt dauber got to it. You could unhook the line directly from the regulator and see if the flow is good, if so it is in the machine. Could be your contactor is not opening the shut off valve completely. I would start at the bottle and work my way forward disconnecting at each point to verify flow then see where it stops flowing at. Process of elimination.

 

[ole farmerbuck]

I think that is normal. When you pull the trigger, the built up pressure releases and then the normal flow which wont be as much, prob cant be heard. I guess i should say that is how our 2 welders are and both work fine.

 

[HiTechTed]

I'm not trying to sound stupid here, just making sure...is it the grille or the brush guard you are modifying? I'm asking because I'd like to modify my brush guard to help keep limbs and sticks from getting to the grill. I was about to start a new tread when I saw yours. I'm not trying to hijack the thread but if anybody has done this could you point me to pics or links to your work?

 

[jcliburn]

I'm not trying to sound stupid here, just making sure...is it the grille or the brush guard you are modifying? I'm asking because I'd like to modify my brush guard to help keep limbs and sticks from getting to the grill. I was about to start a new tread when I saw yours. I'm not trying to hijack the thread but if anybody has done this could you point me to pics or links to your work?

Here's mine. http://www.tractorbynet.com/forums/customization/195153-added-grill-guard.html

 

[Jim in ICT]

You will get a small burst of gas at first. Does it stop, or just slow down? Do you get a weldable arc? Is that 18 PSI, or 18CFH?

 

[Gary Fowler]

OleFarmer is correct in that you will have an initial high pressure surge when it first clicks on. I assumed by your post that it was barely flowing at all after the initial blast. Do you have a flow meter type with a ball that rises as you turn up the flow or do you just have a regulator that is preset for a certain flow. I think I have seen some of those elcheapo type sold with MIG welders. That slow flow may be all that your regulator is set to flow. There should be a screw on it somewhere where you can turn up the flow a bit if it is not flowing enough. You really only need enough that you can feel it flowing when you put it too your face as they really arent designed to weld in a strong wind. About 20 CF per hours is the highest setting that you would want to put on it. Anything more and you start to get some arc blow from the gas.

 

[ole farmerbuck]

I guess the best way to check it is to try it. if it welds ok, you're good to go.

 

[HiTechTed]

Here's mine. http://www.tractorbynet.com/forums/customization/195153-added-grill-guard.html

Thanks!

 

[clee4020]

I used it yesterday and it seemed fine. I'll keep using until it stops... Yes, I should have titled this brush guard instead. Fininshed welding and primed the upper part. Planning on building a box on the lower part to hold a chain or 2..etc. Making it out of 3/4"x6" flat bar. I have seen done on a JD 6330 and liked it. I bought the grapple from a TBN member, DirtyWorks back in Decemeber. Haven't used it much, yet. Mostly waiting for it to dry up and I need to finish my brush guard mods.

 

[HiTechTed]

I used it yesterday and it seemed fine. I'll keep using until it stops... Yes, I should have titled this brush guard instead. Fininshed welding and primed the upper part. Planning on building a box on the lower part to hold a chain or 2..etc. Making it out of 3/4"x6" flat bar. I have seen done on a JD 6330 and liked it. I bought the grapple from a TBN member, DirtyWorks back in Decemeber. Haven't used it much, yet. Mostly waiting for it to dry up and I need to finish my brush guard mods.

I like that woven wire material even better than the expanded metal. I wonder where I can find some of that? I already have some expanded metal that I could use, but I think what you have would be stronger than the stuff I have.