Hydraulic Curcuit Tester

ERNIEB · Jan 9, 2001

I've been reading the Army TM on hydraulics that Gordon provided in another post. Many thanks , Gordon. Anyway, in the troubleshooting section a portable hydraulic curcuit tester is mentioned. Now that might be a useful tool, I think.
I searched Harbor Frieght, and Northern, nothing found. A web search didn't help much either. I did find one company, Hedland-flo tech, that had a "low cost" tester. It looked like a gauge, and maybe a check valve that could be installed in line.
Does anyone know about these testors? Are they of use? Are they expensive? Where can You get them?

Ernie
"You can plainly see that the Alamo was never built by a military people for a fortress."
Green Jameson, Jan 1836 (in a letter to Sam Houston)

DFB · Jan 9, 2001

Ernie, my JD manual describes a pressure gauge, flowmeter, and temperature gauge as needed equipment. John Deere has their own part numbers. Check out this web site www.hydracheck.com. They have the type of test equipment your looking for.

gordon · Jan 9, 2001

DFB Kool link, I bookmarked it. Has a bunch of links off of it. Thanks!!!

Ernie I can't take credit for the link someone else on this board gave me the link for the index of the field manuals and I did a search to get a spot where you didnt't have to down load every chapter each and every time.

I'm sorry I don't remember who posted the link but Thanks!!! It was and is a very useful link!!!
Gordon

ERNIEB · Jan 11, 2001

DFB, thanks for the link. The kit testers are way out of my price range. The gauges and some of the connectors aren't to bad. I don't see why they couldn't be used to measure flow and pressure, which could be helpful in troubleshooting a problem.

Ernie
"You can plainly see that the Alamo was never built by a military people for a fortress."
Green Jameson, Jan 1836 (in a letter to Sam Houston)

DFB · Jan 12, 2001

Hi Ernie, I agree, the cost of certain test equipment is sometimes to much for for the limited amount of times the average guy will use one. I'm certainly no expert on hydraulics but as for testing pressure by building your own tester with a pressure gauge (3000-5000psi), a high pressure hose, and the correct fittings for your application, I don't see why not. DIY style. I wouldn't mind having something like that too. I would think a speciality flow meter would still have to be purchased though. Maybe someone else has some info to share.

markcg2000 · Jan 12, 2001

MarkC,
You put a pressure gauge on your system, right? I've been going over the books and am trying to figure out if mine has a tap, or will I need some sort of "Tee". I do not like the idea of the "Tee" in a rigid line, and I don't see any hose that would always have the system pressure in it.

<font color=green>mark</font color=green>

DFB · Jan 12, 2001

My manual shows several plugs to remove so equipment can be installed for pressure testing. One is on the charge pump, another plug is on the HST housing for PTO clutch pressure. Another test point is the for SCV at the quick coupler and on models without SVC there is a isolation valve and a test port. Must be some other tests that can be performed too. That was just a quick look in the book.

Anonymous Poster · Jan 12, 2001

MarkCG,

I'd like to 2nd your question to MarkC.

Re. "a tee in a rigid line": if you put one "arm" of the tee INTO THE SCV or other valve block ( in other words "at the very end of the line"), wouldn't that take care of concerns about the tee-joint flexing?

Larry

Anonymous Poster · Jan 12, 2001

DFB,

What section of your manual(4100 owner's manual?) were the references to the hydraulic test-ports in ?

Thanks,
Larry

DFB · Jan 12, 2001

Larry, my operators' manual covers only the standard machine operation & servicing, mainly oil, filters, fuel & lubrication. It's a must have though. The additional info came from the TM (Technical Manual). The test procedures were described in the chapters on the Hydrostatic Power Train (port plugs) and Hydraulics (SCV). I have to say the Deere TM is one of clearest and easily understandable shop manuals I have, fully explaining the theory & function of the different componet systems on the tractor. Hope it helps.