IH H25 payloader hydraulic issues

[13fx]

I recently picked up a pair of h25 payloaders. One of them's just a parts unit the other one I plan on using but it needs some hydraulic work. When I got it there was almost no hydraulic oil in the system. I have filled it up and the lift and tilt cylinders work but have lots of air in them still. The unit has a hydrostatic transmission that doesn't work real well. I'm hoping that it's just air in the system and I need to bleed it out. I haven't come across any manuals for these units so I'm not sure on the correct way to bleed the system here. There appears to be 2 bleeder valves by the shifter but I'm not sure if there is a sequence that has to be followed, or what procedures are needed to do in order to bleed the system. I'm hoping someone on here has some experience with this unit or perhaps similar ones.

 

[CraigWis]

You may get more help if you go to Heavyequipmentforums.com
I think that the HA models are the same as H25 but they used a Gearbox transmission. and the 500 may have replaced the H25

 

[Dennis K (WA)]

Binderbooks shows having service manual for H25B. Not sure what you have though. If you post the s/n I might be able to help determine what you have for sure. I think those are pressure test ports in your picture, not air bleeders. I don't remember a bleeding procedure but it has been a long time ago. Dennis

 

[13fx]

I'll take a photo of the serial number here later today. I hope I can get this thing straightened out I don't need a half-working pile of scrapper on my place

 

[13fx]

 

[Dennis K (WA)]

Looks like it is a B series. Born 1978. Good luck with it.
Dennis