Priority unloading relief valve leak on 1086

[IH'r78]

My Dad called wanting me to see if I could find out why his 1086 is leaking lots of hydraulic fluid. Snooping around I found what I presume is called the 'priority unloading relief valve' assembly from the manual diagram (where the 3pt controls go to a rocker plate.) It's leaking a pretty good stream from rearmost 'plug' or cap that I'm guessing is 1 1/2" or 1 3/8" socket which only gets worse with heat and use mowing hay. I didn't have a socket that big so I checked tightness with a crescent wrench-plenty tight. My questions are if it's leaking from the plug can I just replace the o-ring for it or are there bigger issues that need addressing?  (Removing the rear fuel tank....so much fun.) Also, does anyone know what size that o-ring is? I keep telling Dad to just break down and buy an assorted o-ring kit but he's a tightwad. (Nuff' said there.) Thanks! May your windrows run straight!

[HydroTek]

Picture of the leak -- your description is not clear enough to even guess the location

[IH'r78]

The 3pt draft and raise/lower controls link to the rocker on this mounted underneath rear fuel tank to right/rear of top 'deck'. It's leaking right out of the bottom of the plug I circled.

[HydroTek]

Yeah just an oring there
the unloading valve is behind that plug
not normal to leak there - so look for a crack in the casting if the oring is not damaged 

 

[IH'r78]

Thanks Hydrotek. I really do hope it's simply an o-ring because I've already had that tank off a few years ago to replace a hydraulic line. It a PITA getting the bolts back in place for the tank.

[HydroTek]

You take the 4 bolts out of the tank bracket where they mount on the cab support brackets
can get that tank off pretty easily 

Used to clamp the fuel hose to the lower tank , and use the forklift to slide under the tank
could have that tank off in 15 minutes -- if the wheels were not all the way in
(then took a few minutes longer ) since had to slide up from the bottom inside the wheel to get to the hose 

[CIHTECH]

Make sure you use the correct o ring......90 durometer, ORB series (o ring boss) 

[IH'r78]

Noted CIHTECH. Thanks.

Thanks for the tips on the fuel tank HydroTek

[HydroTek]

4 hours ago, CIHTECH said:

Make sure you use the correct o ring......90 durometer, ORB series (o ring boss) 

Yup , ORB orings are different diameter material than "common" orings 

[IH'r78]

It's why I ask questions here, because I always get the best answers! BTW, does anyone know what size that o-ring would be? Possibly 1 1/2" socket head....I'm guessing 1" through 7/8" diameter for the o ring.

[HydroTek]

24 minutes ago, IH'r78 said:

It's why I ask questions here, because I always get the best answers! BTW, does anyone know what size that o-ring would be? Possibly 1 1/2" socket head....I'm guessing 1" through 7/8" diameter for the o ring.

Why not just look it up like I did ...
Messicks is a handy site for parts and diagrams
Also use the CNH site for official parts 

Here is a fun link
https://googlethatforyou.com?q=https%3A%2F%2Fwww.messicks.com%2F

 

[IH'r78]

2 hours ago, HydroTek said:

Why not just look it up like I did ...
Messicks is a handy site for parts and diagrams
Also use the CNH site for official parts 

Here is a fun link
https://googlethatforyou.com?q=https%3A%2F%2Fwww.messicks.com%2F

 

Good point...thanks though. How's the hay in Indiana? Good here we're just in a little dry spell as the rain keeps splitting off in Nebraska and has been very spotty.

[1967806]

5 hours ago, IH'r78 said:

Good point...thanks though. How's the hay in Indiana? Good here we're just in a little dry spell as the rain keeps splitting off in Nebraska and has been very spotty.

Been getting good rains here in southern Iowa. Getting some right now as I type. Where bouts are you in Missouri? 

[IH'r78]

11 hours ago, 1967806 said:

Been getting good rains here in southern Iowa. Getting some right now as I type. Where bouts are you in Missouri? 

We had some good storms last night. I heard 2 1/4". I'm in Carroll county close to Carrollton and Chillicothe.

Got the o rings and the leak stopped last night except now that it's fixed it rained enough to stop any haying for a couple of days unless we get more hot, southerly breeze weather-good haying weather. Wished I'd had it done but life happens.

[HydroTek]

20 hours ago, IH'r78 said:

Good point...thanks though. How's the hay in Indiana? Good here we're just in a little dry spell as the rain keeps splitting off in Nebraska and has been very spotty.

Hay was late this year , we had one 3 day spot in late May that the guys with dry ground were able to get put up . I missed that window taking the Wife to the doctor -- glad I didn't have any wheat hay out this year.
Got my hay up except for about 5 acres (too muddy) 2nd week of June -- way late this year 

There has been a lot of late hay cut around here on the rent farms -- guys  trying to get enough hay for the winter since the first hay was a fail -- mowing every little patch that can be found

Looks like it may turn off dry now tho -- we will see. Need to go cut that part I could not get into -- just to get the weeds off 

Typical Farming weather -- we hope for the best each year , but rarely get it 

[IH'r78]

Yea I sent my brother-in-law to get those o rings as his job is right by a Deere dealership. Those 2 o rings cost him $9. Unbelievable. (Still better than replacing a cracked hydraulic unit.) The old o ring was hard and flattened out. Got it put on with the plug and started the tractor no leak except the front plug started seeping. I tightened it up and it stopped thankfully. I doubt it's the same size as the plug was smaller.

We had ideal hay weather except the hydraulic leak stopped us. Dad's 856 and 1086 both need some seal replacements as they're sieves right now. The 1086 needs a new right side wheel hub seal installed. Our old 400 finally had it's T/A give out so can't even rake with it.

I didn't know the first hay failed in your area. I got more bales off of the pasture this year than I can remember but it was also fertilized. The fields without fertilizer are nothing to write home about but made enough. I remember grandpa telling me about 1934-it was so dry he was cutting trees down just to give the cows something green. His hired hand actually found a patch of thistle and cut and stacked it for any kind of forage. Had to pour molasses (government aid) on it just to coax the cows into eating something. Grandma always said she felt so bad for the cows with ribs showing.

Forgot about Red Power Roundup this weekend in Sedalia about 2 hours drive from here. Since it rained I might just ask Dad if he wants to go tomorrow.

[1967806]

3 hours ago, IH'r78 said:

Yea I sent my brother-in-law to get those o rings as his job is right by a Deere dealership. Those 2 o rings cost him $9. Unbelievable. (Still better than replacing a cracked hydraulic unit.) The old o ring was hard and flattened out. Got it put on with the plug and started the tractor no leak except the front plug started seeping. I tightened it up and it stopped thankfully. I doubt it's the same size as the plug was smaller.

We had ideal hay weather except the hydraulic leak stopped us. Dad's 856 and 1086 both need some seal replacements as they're sieves right now. The 1086 needs a new right side wheel hub seal installed. Our old 400 finally had it's T/A give out so can't even rake with it.

I didn't know the first hay failed in your area. I got more bales off of the pasture this year than I can remember but it was also fertilized. The fields without fertilizer are nothing to write home about but made enough. I remember grandpa telling me about 1934-it was so dry he was cutting trees down just to give the cows something green. His hired hand actually found a patch of thistle and cut and stacked it for any kind of forage. Had to pour molasses (government aid) on it just to coax the cows into eating something. Grandma always said she felt so bad for the cows with ribs showing.

Forgot about Red Power Roundup this weekend in Sedalia about 2 hours drive from here. Since it rained I might just ask Dad if he wants to go tomorrow.

Dad has a well on his farm and according to some of the old timers that lived around there before my grandparents did, in 39, folks from nearby towns came out in the dry years of the 30's to get water out of it. It still there under the windmill tower but hasn't been used for years since the pump jack took a crap. 

[IH'r78]

Speaking of wells I remember what my grandpa told me about my great-grandad. This would have been 1900's, g-gdad had a witch dowser come out and walk his property. The dowser pointed down and said "Dig a well right here. Two underground streams cross here so it'll never go dry. Sure enough during drought years people would come out to get water out that well.

[sandhiller]

7 hours ago, IH'r78 said:

I'm in Carroll county

Glad you got your leak fixed

Advice from the experts here never disappoints. 

Sounds like you have been in your area for a few generations

This any relation of yours?

 

😄

Have a good day and good luck with your hay. 
I may get started this coming week. 

[IH'r78]

Makes me wonder since old Porter was a native Missourian. My grandpa loved the show Porter had back in the 60's that launched a young Dolly's career.

[IH'r78]

Had a heck of a weekend. Baling with the 1086 I noticed it was freewheeling on hills and the clutch was slipping. I tried the T/A and noticed it was engaged the entire time. I stopped and got out looking around the MDC valve and somehow a chunk of treelimb got jammed up underneath pinning the valve. Broke the clutch sensor. Probably from when mowing someone was going too fast. After I get that figured out I continue baling and see my brother-in-law not raking just standing. The rake (old Vermeer) had broken off an entire wing. 2 1/2" pipe that swivels. I'd welded a few years ago when the same thing happened. Brother-in-law strapped the broken wing to the front loader and when heading back the cab of 856 filled with burnt insulation smoke. Found three melted wires in the harness so just cut them out and hot wired the starter to limp it home yesterday. Heaven knows how that happened but we're ordering new wiring harnesses before something even worse happens. Fun times.

[HydroTek]

8 hours ago, IH'r78 said:

Had a heck of a weekend. Baling with the 1086 I noticed it was freewheeling on hills and the clutch was slipping. I tried the T/A and noticed it was engaged the entire time. I stopped and got out looking around the MDC valve and somehow a chunk of treelimb got jammed up underneath pinning the valve. Broke the clutch sensor. Probably from when mowing someone was going too fast. After I get that figured out I continue baling and see my brother-in-law not raking just standing. The rake (old Vermeer) had broken off an entire wing. 2 1/2" pipe that swivels. I'd welded a few years ago when the same thing happened. Brother-in-law strapped the broken wing to the front loader and when heading back the cab of 856 filled with burnt insulation smoke. Found three melted wires in the harness so just cut them out and hot wired the starter to limp it home yesterday. Heaven knows how that happened but we're ordering new wiring harnesses before something even worse happens. Fun times.

Yup, been there
"stuff" always happens when you are in a crunch to get done