Sovereign series Hydro hose replacement

[Chris727 2,246]

Hello,

Have been working on trying to replace the hose to sump on the 917 as the hydro was whining and these hoses are known to crack and cause that symptom. I bought some 100R6 hydraulic hose from JD.
 

 

I am having trouble getting it to flex enough to get over the bottom fitting. 
 

There is not much gap between the fittings. 
 

I don’t know if I can get a more flexible hose? I found that the auto parts store carries 5/8 ID fuel line but it’s only 38 PSI. I’m not sure how much pressure this is under. I loosened the lower fitting and rotated it but that did not help. My next attempt would be to again remove the hose, then remove the bottom fitting completely and install the hose while on the bench. Then rethread the assembly into the sump and attempt to slide the hose up onto the upper fitting, but I fear I will experience the same amount of flex required. Does anyone have any experience with this? 
 

Thank You. 
 

 

 

[SmilinSam 4,240]

If its a return line from hydro lift valve or steering valve its usually a more flexible hose thats used. Not as stiff as a pressure line. At least going by the Sunstar lines used that run through the coolers and  also to the fitting bottom of the transmission. 

Thats about all the insight I can give.

[Ronald Hribar 133]

Looks like return line

think you would need a different type of fitting for pressure line

[Bill725 1,364]

The hose is the inlet/suction for the hydro. There is a drain port on the mounting face of the hydro/transaxle case where fluid returns to reservoir/case.

I purchased hoses from Simplicity, P/N 1650564SM to convert my late model Sovereign hydro from side filter to the old remote so I can power a chipper/shredder. I have parts but have not done it yet. The hose packaged is Gates 10GTH 350PSI 5/8" ISO 4079 Type 1/EN 854 R6/SAE 1006R6, which is low pressure used for hydraulic, HD transmission oil cooler & antifreeze. The same size and spec of the Continental brand pictured above.

I suggest measuring the length of hose needed, cut hose to length, remove the lower hose end from transaxle, install hose on upper hose end, slide hose clamps onto hose, install lower hose end on hose, install lower hose end into transaxle, tighten hose clamps.

Edited November 16 by Bill725

[maxwood 636]

Hello, Loosen the lower 45 degree fitting ,rotate the fittng to allow the hose length  to fit over  the fittng

and rotate as tightening the fitting while sliding the hose onto the fitting.

hope that makes sense.

I have had to replace several over the years.

Thanks Ken in Mi

[PhanDad 3,825]

I've had some success heating a hose with a hair dryer to warm the hose and make it more pliable so it will expand more easily.  (hose lubed with fluid as standard practice)

 

[Chris727 2,246]

Thank you for the suggestions, I had cut this 1/4” longer than the original because I had wanted to fully cover the fittings but that was before attempting to install. I will trim the 1/4” off and see if that helps. These fittings are so long that probably a little more could be trimmed. Had lubed with vasoline but will try hydraulic  fluid instead. 

[Bill725 1,364]

1 hour ago, Chris727 said:

Had lubed with vasoline but will try hydraulic  fluid instead.

I learned as a young lad to never use Vaseline on a rubber as it defeats the purpose. LOL.

[CarlH 441]

I have addressed collapsing hoses on the inlet side by putting a suitably sized spring inside.  Lube the hose with dishwashing soap.

 

 

[Chris727 2,246]

I got it installed. I shortened the hose by 1/4” and then slid it off of the upper fitting just far enough that only the barb was still holding it. This allowed it to flex more. I already had the lower fitting loosened to rotate. Used dish soap to lubricate. Worked with it just a bit and got it started over the lower fitting and slid into place. Still have to slide the clamps in place. 
 

Thank you for the suggestions! 

[acken 226]

Chris, I just replaced one of these a couple of days ago.  I used an OEM from Simplicity, I turned the bottom fitting after loosening the jam nut, best way to go.