steel hydraulic line 2005 john deere 317 skid steer

good eve to all and wishing all merry christmas and safe and happy new year.. I have a 2005 john deere model 317 skid steer. been getting an oil leak somewhere from lower end of the machine. after stripping down the tin from the front of the machine what i can see is that its very possible a Steel line coming from under the foot control runs under the drive on passenger side and goes to a block about afoot from the drive towards the engine compartment. ive looked at some different part sites and cant seem to find this line in any pictures. it appears it could possibly be rotted from sitting in misc. build up of crap over the years.the soil and everything else at the bottom is totally saturated. short of calling the dealer anyone have a clue? thank you in advance Don