DK45S hydraulic couplers.

[RandyT]

Has anybody changed the o rings in their 1/2" hydraulic couplers. Do they take the same O rings as the Pioneer 4050-4 couplers. Look like the coupler says Kwankwang co on the brand name. I know the male end of the coupler is a pioneer 8010-4 on my bush hog loader

 

[RandyT]

Just for a follow up. It appears the Kwankwang connectors used in the Kioti tractors are ISO 7241-1 Series A Not standard ISO 5675 used for most Ag applications. So not only are my loader connectors leaking and I was going to change the O rings it also appears that the loader came with the ISO 5675 male connectors plugged into the ISO 7241-1 female connectors.