Oil & Fuel John Deere 5310 Hydraulic Leak

/ John Deere 5310 Hydraulic Leak #1  

Fowlhunter22

New member
Joined
Jan 10, 2017
Messages
18
Location
Texarkana, Arkansas
Tractor
John Deere 5310
I have searched parts catalogs until my eyes are crossed and cannot seem to find out what the pet is under my gas tank on rear of tractor to the right of PTO and differential where hoses hook into. I noticed after working tractor the other day for a good bit there was hydro flying dripping down on differential from this. It could be hose connections or o rings but anyways please help identify what this box is called. Thanks for any help. IMG_3603.JPG
 
/ John Deere 5310 Hydraulic Leak #2  
Looks like the SCV (Selective Control Valves) and appears to be three... are they linked to control levers?

Is this with cab? or without?

:welcome: to TBN
 
/ John Deere 5310 Hydraulic Leak
  • Thread Starter
#3  
Looks like the SCV (Selective Control Valves) and appears to be three... are they linked to control levers?

Is this with cab? or without?

:welcome: to TBN

This is without cab. It's a 1998 open station 5310 with FWD, FEL, and hopefully one day a lot more attachments. I have. It had t Actor that long, and this is my first tractor but sure couldn't find anything on web about what that was. So what does 3 SCVs mean? Yes on the backside of that goes to the joystick for FEL
 
/ John Deere 5310 Hydraulic Leak #4  
Welcome to TBN
Ditto what beenthere stated as valve in photo appears to be scv. O-ring(key 10) is part number 51M7043
 

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/ John Deere 5310 Hydraulic Leak
  • Thread Starter
#5  
Welcome to TBN
Ditto what beenthere stated as valve in photo appears to be scv. O-ring(key 10) is part number 51M7043

Wow I need to make more posts you guys have been very helpful! Thanks to both of you
 
/ John Deere 5310 Hydraulic Leak
  • Thread Starter
#7  
Dang glad you told me about the technical manual! I have the operators manual, it came with that tractor. This is my first tractor and have a little mechanical knowledge but I mean a little. So when this problem came up and I noticed the leak I realized I needed the technical manual are they are HIGH as a hard copy (like 159) on eBay. Thanks again for another great tip!
 
/ John Deere 5310 Hydraulic Leak #8  
/ John Deere 5310 Hydraulic Leak
  • Thread Starter
#9  
More help for the newbie here. After taking off the fender and having every socket in my toolbox out I cleaned everything off and found the leak. It is from where the SCV is mated with possibly the third SCV and the tractor. It appears that it is coming from two different spots. Is there a seal where all of this joins? Also the 4 bolts that pull all of this together where loose and I tightened them, the leak went from a drip every couple of minutes to a seep. Attached are pictures. Thanks for any help you can give. IMG_3747.JPGIMG_3748.JPGIMG_3747.JPGIMG_3748.JPGIMG_3747.JPGIMG_3748.JPG
 
/ John Deere 5310 Hydraulic Leak #10  
Of the 6 pics posted, are there just two that are different? Or some subtle differences you want to show between the six ?? Just curious...
Maybe an arrow to show where the leak is.. or what is now a seep.

The 3 SCV are mated with tubes and o-rings.. no gasket/seal, if I read the parts lists correctly.
 
/ John Deere 5310 Hydraulic Leak
  • Thread Starter
#11  
Sorry about that, here is only 2 pictures that are different. I didn't realize I posted the same two 3 different times. The leak is in between where I guess what would be considered the housing?
 
/ John Deere 5310 Hydraulic Leak
  • Thread Starter
#12  
Here are the same pictures. Where the yellow lines I have drawn are where the leaks are. IMG_3747.JPGIMG_3748.JPG
 
/ John Deere 5310 Hydraulic Leak
  • Thread Starter
#13  
Of the 6 pics posted, are there just two that are different? Or some subtle differences you want to show between the six ?? Just curious...
Maybe an arrow to show where the leak is.. or what is now a seep.

The 3 SCV are mated with tubes and o-rings.. no gasket/seal, if I read the parts lists correctly.

What parts list are you looking at Beenthere? I have looked at jdparts and am not able to find anything that looks like an print where the housings join. Thank you
 
/ John Deere 5310 Hydraulic Leak
  • Thread Starter
#14  
After looking somemore at some selective control valves it doesn't appear there is an outing in between the housings. Just internally on valves, and housings are just metal to metal. Would I be leaking because the internal prints are worn out and need replacing?
 
/ John Deere 5310 Hydraulic Leak #15  

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