Bobcat 763 Hydraulic control valve (?) leak

I'm new to this type of forums. A friend of mine has a bobcat 763 C-series and is leaking hydraulic oil from what I think the service manual calls the hydraulic control valve (pages 79-104). I put a good 5 gallons of hydraulic oil before the dipstick could see any.
http://ift.tt/2y18L2j

Attached some pictures of where I see the leak....

Bobcat 763 Hydraulic control valve (?) leak

Bobcat 763 Hydraulic control valve (?) leak