1983 Case W18B air issues

[Markyta]

I have a 1983 Case W18B wheeled articulated loader. When I start it up, it's not providing enough air to release the parking brake. I aired up the air tank with a compressor and found both the brake pedal and clutch/brake pedal are leaking air from the bottom when the snap ring is. Anybody ever have this problem and what are your thoughts?
Thanks guys.

 

[DJ54]

As old as it is, seals are probably shot, gummed up with oil/water residue from the air system, etc. There are rebuild kits for them but also saw complete aftermarket brake valves for less money.

I'd probably take it apart and see what is exactly wrong, if it's corroded much, probably easier/cheaper to just get a new aftermarket one.

You can copy and paste the P/N for any of the parts on Google and get a lot of hits. Here's the link to Case Construction and already have selected the brake system: CASE Construction | W18B - Case Wheel Loader | MyCNH US Store

 

[Markyta]

That's great. Thank you!