[rwmeyer]

Looking at parts catalog, I don't think there's an o-ring where hose(s) attaches to cylinder(s). I can determine where all the o-rings go, all 17 in total, and none go to the cylinder end of the hoses.

Just in case! Park tractor in an area where it will be out of the way for a week if necessary! Lower arms, put bucket flat on ground, shut tractor down, and move control levers back & forth to remove any residual pressure. Not sure of you scv and you may need to do this with engine off but key "on". SLOWLY loosen leaking fitting and the remove completely. I'm "thinking" you'll find a male 37º fitting on your cylinder and a female 37º swivel fitting on your hose end. Inspect both fittings CLOSELY looking for debris or cracks. Inspect nut for cracks also. Sometimes over-tightening can can crack/split a nut and it won't tighten properly again.

Plan "B" is remove hose, take pic of inside of hose end, fitting on cylinder, and post pics. Bob

 

[rwmeyer]

From GreenPartStore, here's the specs for item 13 T77613:
John Deere O-Ring

Specification
Inside Diameter	0.364 IN
Nominal Section	0.070 IN
Standard Number Code	A
Standard Number Size	012
Durometer	90
Material	H4D
Finish
Note

After some difficulty, I found specs for a -06ORFS o-ring: .36" ID x .07 width. This info from Parker Hyd.

Hopefully to not confuse things, this is also known as a 012, as spec'd in the Deere info. Here's info for that:

SO! As Kennyd stated, item #13 will work. Bob

 

[rwmeyer]

Thinking that's the bucket cylinder and not the arm lift cylinder. Raise arms, maybe 4-6 feet above ground level. make bottom of bucket parallel with ground. Shut tractor down and do NOT operate bucket levers!

Gravity will want to make your bucket tip down/dump position. pressure in the bucket cylinders will prevent this as long as cylinders aren't leaking! After 5-6 hours, your bucket may/could drift down anyways do to internal leaks (called slippage) and you may not see any external oil. Raise bucket, do what you gotta do, and see what happens! Bob

 

[rwmeyer]

My questions are did you install a new o-ring or the old one? If new, from Deere or box store and what's the material? Did you remove the hose completely and inspect sealing surface on hose and cylinder fitting as well as nut?

Before replacing anything, verify 100% WHAT is leaking! Wipe/spray everything near where the leak is. Run/use bucket, shut down and look for leak. If you get a can of corn starch or baby powder and dust the area of the leak, the powder will stick to the oil leak and (mostly!) fall off the cleaned surface. Bob

 

[rwmeyer]

O-ring fittings come in several types and ORFS (O-Ring Face Seal), ORB (O-Ring Boss), and flange seal (2 flanges bolted together) are the most common. None of these use an o-ring slipped over a flange. The pic below show 2 types with the ORFS on the left and the ORB on the right. The fitting on your cylinder should look like the fitting on the left, ORFS

You may have stretched the o-ring too much, so replace it! Clean the groove in the end of the fitting on the cylinder, apply hyd. oil to groove, o-ring, and threads on fitting. Place o-ring in groove on cylinder fitting and snug nut on hose. As you "snugging" nut, wiggle hose...raise/lower/rotate... to help properly align "Face" (flat surface) on end of tube with o-ring. The proper torque on the nut is 29 ft-lb or a firm pull on the wrench.

Hope this helps or at least clarifies things! Keep us posted, Bob

 

[rwmeyer]

A mark, sometimes white, some black sometimes "other", typically indicate that a fastener has been torqued or properly tightened. When things are put together, it's possible for a fastener to be just started or hand tight. The mark indicates correct tightening.

If you other side doesn't leak, I wouldn't take it apart. Take pic of fitting on cylinder and end of hose. If removed, try to add an arrow... or even a piece of tape... showing where you had the o-ring installed.

An old maintenance saying is, "If it ain't broke, don't fix it." You opposite side ain't broke, don't frig with it! Bob

 

[rwmeyer]

Glad everything worked out and don't feel bad about screwing it up the first time... that's called "the learning process". If you screw it up a second time because you didn't ask... we'll call you "dumb-a$$!" We're here to help, feel free to ask. Bob