[RickB]

Originally Posted by jinman

EDIT: Sorry, I first overlooked that this is a tractor you are looking to buy. I'd run that pressure check anyhow before making my deal. The results may be a negotiating tool for finding a satisfactory purchase price. If everything worked normally, it would not matter. But, with your seeing a FEL weakness, this is worth checking with the gage. My NH dealer, TSC, and other dealers carry the gages and fittings to build a test gage (5000 psi gage is best). I use mine fairly often.

2ND EDIT: A pressure gage that you can "T" into the line would work best for this test. That way you have both supply and return connected as normal and just measure the applied pressure. If you remove one of the hoses to connect a gage, all you will measure is system pressure. You won't be able to see if there is internal cylinder leakage. But, if you "T" in a gage by using one male and one female quick connect so you can leave the system connected normally, you will have better test setup.

Doing both tests will confirm whether the tested circuit is sound enough to build whatever the system relief pressure has been determined to be.