ISO to SAE controls conversion on No. 7 backlhoe

[Mechanos]

Would it be as simple as switching the hoses around at the valves to convert from ISO controls to SAE? Or are the valves physically different requiring the valve stack to be separated and the valves reassembled in a different order to acheive SAE pattern controls?

 

[ctlguy]

swithcing the hoses is how we always did it on the bigger units, 310's 410's but I guess I can't say 100% on the #7, I think that is all you need to do.

 

[spruce Deere]

What? there is other controls than SAE?!

An inlaw of mine changed the valve hoses on a no.9 back hoe from that southpaw ISO pattern..... Made it more usable.

All hoes or any excavator type boom machine should have a iso/sae switch valve standard.

 

[techwrtr2]

I never knew there were multiple patterns. How are they different? What I'm familiar with is the pattern on our old Satoh with Blackhawk hoe and the French built hoe we had on our 455 crawler.

 

[Mechanos]

What? there is other controls than SAE?!

An inlaw of mine changed the valve hoses on a no.9 back hoe from that southpaw ISO pattern..... Made it more usable.

All hoes or any excavator type boom machine should have a iso/sae switch valve standard.

Was looking on JD Part catalog and saw some mention of a pressure relief and an anti-cavitation arrangement on the dipperstick valve, but did not see any mention of this on the boom valve. I'll have to do some more investigation to see if both the valves are the same or not. If they aren't, it should be a big deal to pull the valve stack apart and swap positions in the stack with the boom and dipperstick valves. I don't have a lot of time yet running a backhoe, so if I'm going to learn... I want to learn SAE as there is some other equipment I may potentially run someday. Seems like most all of the other excavators I may run all use SAE.

 

[Mechanos]

I never knew there were multiple patterns. How are they different? What I'm familiar with is the pattern on our old Satoh with Blackhawk hoe and the French built hoe we had on our 455 crawler.

ISO is also often called "John Deere" controls:
left stick - boom swing and boom raise/lower
right stick - bucket curl and dipperstick

SAE is also often called "Cat" controls:
left stick - boom swing and dipperstick
right stick - bucket curl and boom raise/lower

 

[spruce Deere]

Was looking on JD Part catalog and saw some mention of a pressure relief and an anti-cavitation arrangement on the dipperstick valve, but did not see any mention of this on the boom valve. I'll have to do some more investigation to see if both the valves are the same or not. If they aren't, it should be a big deal to pull the valve stack apart and swap positions in the stack with the boom and dipperstick valves. I don't have a lot of time yet running a backhoe, so if I'm going to learn... I want to learn SAE as there is some other equipment I may potentially run someday. Seems like most all of the other excavators I may run all use SAE.

Hmmm..... the inlaw might have done more than switch hoses then. I do know he wanted it to have the same functions as the excavators at work and achieved it.

The first boom machine I ran was I.S.O. That was over 20 years ago and have all but forgot that pattern because 99.9% of the machines I'm around are of S.A.E control. Kobelco, Komatsu, link-belt, Cat. Even kubota's excavators with there handy switch valve gets left on S.A.E mode. For this area, S.A.E is very common.

If that was my no.7, I would take the time and switch valves if there is built in reliefs

 

[Mechanos]

I talked to Deere today and the boom and dipperstick valves do have different part numbers. The dipperstick valve has a 2000psi pressure relief and an anti-caviation where the boom valve does not. So, for the No. 7 at least... it looks like a valve swap is a necessity to convert to SAE. The rather knowledgable service guy I talked to went on to add, "I have no idea what aggrevatoins or complications may result from swapping the valves, but as a Deere representative I need to CMA and recommend that you do not try it." That's lawyer speak for "if you try it and it messes something up, we're not responsible". Personally, I can't see what harm it would do and I'll probably try it unless I unearth a valid reason not to before I actually get around to it.

 

[spruce Deere]

I see no reason not to swap valves. Other than clearance issues that will not permit valve section trading or something more evil. All you are doing is changing sides of what operates what.... Go for it!!!

 

[Red Horse]

In this day and age, IMO it's a dumb move on Deere's part not to have an easy fix to convert to SAE. And this from an old guy who learned on Ford four sticks!

I did buy a nice used 410E for my company a few years ago (a 98) and it was no big deal to convert from Deere to SAE. I guess on the "green" machines deere does not recognize the value.