NH 7308 Loader Owners

Spencer · Jun 11, 2003

Most of you have probably read MrWurms thread about tweaking the output of his 7308 FEL. If you haven't read that thread here is the link:
Tweaked FEL Output

Half way down that thread, right here, I posted about going to my local hydraulic store and having them build me a hydraulic pressure tester that will hook right up to the quick couplers on the 7308 FEL.

I didn't get this tester to tweak my hydraulic pressure above New Holland's specifications, I just wanted to make sure that my pressure was as high as it should be. As I stated in Mrwurm's thread I turned my pressure up to 1850 psi at 2600 rpm's. I put about 6 or 8 hours on my machine since then and I just double checked my pressure again tonight. It is still right at 1850 psi while at 2600 rpm's. The manual states that the pressure should be 1800 psi at 2600 rpm's but I am not going to mess with it again, I will leave it at this setting for now.

So as I am done with my new hydraulic pressure tester for a while I thought that if there was interest I would loan it out to my friends at TBN. Here is what I am thinking, I will send it out UPS (free of charge) to Mrwurm first (if he is interested). Then when he is done with it he would send it (free of charge) on to the next 7308 loader owner on the list. Mrwurm would send me a private message with his address and the first person on the list after him would PM Mrwurm his address and so on.

So is anyone interested? If so just reply to this thread and the tester will be sent on to you in the order in which you replied. All I ask is that I get the tester back in good condition and that you all post your results here.

Mrwurm · Jun 12, 2003

Hey Spencer, a very generous offer. I will take you up on it. Seeing as I turned in my screw alot more than 1/8 turn I am sure that I am way-out of spec. I'll send a PM right away. /forums/images/graemlins/cool.gif This could be fun. /forums/images/graemlins/grin.gif

DanCT · Jun 12, 2003

Spencer, I would be interested in your generous offer. It would be nice to know that the loader is operating at specs. Let me know when I'm next. Thanks.

thcri · Jun 12, 2003

Hey Spencer,

I would love to take you up on your offer also. That would be great. Just let me know when and then who I send it on to?

murph

Spencer · Jun 12, 2003

( Let me know when I'm next. Thanks. )

DanCT, You will be right after Mrwurm and then you can send it on to Murph (thrci). We will go in the same order in which everyone replies to this thread. Mrwurm sent me his address via PM and I will be shipping the gauge out to him via FedEx Ground yet this afternoon. I will PM him the tracking number so he will know when to expect it.

Mrwurm · Jun 12, 2003

Ok Spencer, could you clarify some points? You attached the inline gauge to the lift circuit as I recall. Did operating the lift circuit provide the pressure reading or did you have to apply a load to the system by chaining down the bucket to an immovable object? I was thinking of testing the pressure in the outlet that provides down-force so that the tractor weight provides the load. How did you do it?

Spencer · Jun 12, 2003

( Ok Spencer, could you clarify some points? You attached the inline gauge to the lift circuit as I recall. Did operating the lift circuit provide the pressure reading or did you have to apply a load to the system by chaining down the bucket to an immovable object? I was thinking of testing the pressure in the outlet that provides down-force so that the tractor weight provides the load. How did you do it? )

Jerry,
The first time I used it I hooked it inline to one of the FEL circuits as shown in this picture. While the gauge is hooked up like this you do have to put a load on the FEL. I tried lifting up a fallen tree that I knew was too heavy for my FEL to lift. After I used it like this a few times I was confident that all the air was now out of the hose on the gauge. At that point I unhooked it from that particular circuit and tried it in a couple of the other FEL circuits but I did not hook it inline, I only hooked it up to the female quick coupler coming off of the tractor (on the left side of the picture with the green ring around it). With the pressure gauge only hooked up to one quick coupler the hydraulic fluid cannot travel through the whole circuit so as soon as you move the FEL control you will see the relief pressure without needing to put a load on the FEL. I hope that explains it, I just sent you the tracking info in a PM. You probably won't receive the package until Monday /forums/images/graemlins/frown.gif.

bher · Jun 12, 2003

I would also be interested in trying that gauge. Thanks so much for kind offer.

bnixon · Jun 12, 2003

Hey Spencer,

I too would like to take you up on your offer.

Just let me know when to expect it and who to send it to next.

Thanks for your generosity /forums/images/graemlins/laugh.gif

Spencer · Jun 12, 2003

Mrwurm, a word of caution to you and everyone else. I had this built with a 5 foot hose so that I could be sitting in the seat and be able to read the gauge easily. Even though the 5 foot hose is quite flexible, the second you put pressure on the circuit that it is hooked up to the hose will want to straighten itself out immediately. So just make sure that you are holding on to the hose or that you have bungeed it to your tractor in a good spot. If it is just lying there loose and you put pressure on it there is a chance that it will go flying and break something /forums/images/graemlins/blush.gif