NAMVET77 Posted March 7 Share Posted March 7 When I apply the emergency brake (pulling the handle up) I can hear a air leak. If I wiggle the handle it seems to stop although the air gauge goes down to 0 PSI in a few hours. I just rebuilt the front and rear six packs (what a PITA). I had a couple leaking so I did them all. Thank you "Ivan" for the tool to removing the nut on the air valve. So, my question before I get into it is, is the brake actuator (not sure of the correct nomenclator) rebuildable (ie replace o rings) assuming there are o rings or do I just replace the actuator? Either way if it is rebuildable what size are the o rings and how many? If not rebuildable, what is the part number for the valve? It's a HWH system on a 04 Camelot, air leveling. TIA. Don Genesse Link to comment Share on other sites More sharing options...
Solution Craggar Posted March 7 Solution Share Posted March 7 (edited) They're pretty cheap to buy so I would just replace with a new one. I don't know the part # for the one you have but I would guess it would be a common one at a truck supply place. Edited March 7 by Craggar Link to comment Share on other sites More sharing options...
NAMVET77 Posted March 7 Author Share Posted March 7 Craig, thanks for the feedback. Hopefully when I get it out there will be a p/n on it or a manufacturer name on it. Don Genesse Link to comment Share on other sites More sharing options...
Kenster Posted March 8 Share Posted March 8 On 3/6/2024 at 5:40 PM, NAMVET77 said: When I apply the emergency brake (pulling the handle up) I can hear a air leak. If I wiggle the handle it seems to stop although the air gauge goes down to 0 PSI in a few hours. I just rebuilt the front and rear six packs (what a PITA). I had a couple leaking so I did them all. Thank you "Ivan" for the tool to removing the nut on the air valve. So, my question before I get into it is, is the brake actuator (not sure of the correct nomenclator) rebuildable (ie replace o rings) assuming there are o rings or do I just replace the actuator? Either way if it is rebuildable what size are the o rings and how many? If not rebuildable, what is the part number for the valve? It's a HWH system on a 04 Camelot, air leveling. TIA. Don Genesse Forget a part number. Remove the old one and carry it into any semi truck parts house and match it up with what they have. Those valves are not vehicle specific. Link to comment Share on other sites More sharing options...
GMan81 Posted March 9 Share Posted March 9 try Part # KN20031 1 Link to comment Share on other sites More sharing options...
NAMVET77 Posted March 10 Author Share Posted March 10 Thanks. I went to the local Peterbuilt parts store and they didn’t have it in stock but could order it and have it in 5 days for $150!!! On line it was $45 to $100. Went to NAPA and they will have it here Tuesday for $55. The part number they used was KN20031. It will be installed Tuesday then I get to air check the whole system. Thanks everyone. Don Genesse 1 Link to comment Share on other sites More sharing options...
GMan81 Posted March 10 Share Posted March 10 Glad you found one. Link to comment Share on other sites More sharing options...
NAMVET77 Posted March 21 Author Share Posted March 21 Changing the air brake actuator fixed that leak but still have other leaks I’m working on. Thanks everyone for your help. Don Genesse 1 Link to comment Share on other sites More sharing options...
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