Markheliops Posted January 20, 2019 Share Posted January 20, 2019 Hi all. In desperate need - asap - of a brake governor for my S26. Mine is shot. Does anyone have a spare? Thank you. Quote Link to comment Share on other sites More sharing options...
Markheliops Posted January 20, 2019 Author Share Posted January 20, 2019 I haven't come across this type before but I do remember my other S26 had the same valve. It looks to me as the governor is combined with a safety valve. Is there an S26 owner who can check their truck and see if they have similar? I may have to fit an updated governor into the system as I don't think I'm going to be able to source a replacement unit. Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted January 20, 2019 Share Posted January 20, 2019 13 minutes ago, Markheliops said: I haven't come across this type before but I do remember my other S26 had the same valve. It looks to me as the governor is combined with a safety valve. Is there an S26 owner who can check their truck and see if they have similar? I may have to fit an updated governor into the system as I don't think I'm going to be able to source a replacement unit. Hi Mark, The part number for the valve is on the tag, it is APSA2878, which is a Wabco or Bendix part number. Repair kits were avaialble for these valves and they were used on other Leyland commercials. Try a motor factors that deals with HGV's or a DAF dealership. regards, Richard Quote Link to comment Share on other sites More sharing options...
Markheliops Posted January 20, 2019 Author Share Posted January 20, 2019 Thank you Sir Richard About time you received a Knighthood. Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted January 20, 2019 Share Posted January 20, 2019 8 minutes ago, Markheliops said: Thank you Sir Richard About time you received a Knighthood. Thanks Mark ...................... I won't hold my breath on the Knighthood though 🙂 Quote Link to comment Share on other sites More sharing options...
radiomike7 Posted January 20, 2019 Share Posted January 20, 2019 (edited) 3 hours ago, Richard Farrant said: Hi Mark, The part number for the valve is on the tag, it is APSA2878, which is a Wabco or Bendix part number. Repair kits were avaialble for these valves and they were used on other Leyland commercials. Try a motor factors that deals with HGV's or a DAF dealership. regards, Richard The repair kit for APSA 2878 is CLA7GA29209 and although Leyland DAF refer to it as Unloader Valve (Clayton Type) it appears to be a Wabco product. I have the manual here which gives 5 pages of overhaul instuctions and which suggest the valve should be binned or overhauled every 50k miles, twice every year for the average user! Mike Edited January 20, 2019 by radiomike7 Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted January 20, 2019 Share Posted January 20, 2019 Mike, It was a Clayton Dewandre design and then the company was incorporated into Bendix, Westinghouse (WABCO) and I think now Knorr Bremse Quote Link to comment Share on other sites More sharing options...
radiomike7 Posted January 20, 2019 Share Posted January 20, 2019 8 minutes ago, Richard Farrant said: Mike, It was a Clayton Dewandre design and then the company was incorporated into Bendix, Westinghouse (WABCO) and I think now Knorr Bremse Yes agreed, most of the brake parts now seem to come from Knorr Bremse. Incidentally 2878 shows as also being used by Bedford and Foden, possibly others. Retail on the complete valve assembly is something like £250. Quote Link to comment Share on other sites More sharing options...
Markheliops Posted January 20, 2019 Author Share Posted January 20, 2019 Thanks Mike. Useful info - 👍 Quote Link to comment Share on other sites More sharing options...
radiomike7 Posted January 20, 2019 Share Posted January 20, 2019 1 hour ago, Markheliops said: Thanks Mike. Useful info - 👍 Let me know if you get a repair kit and I can scan the relevant pages from the manual. Quote Link to comment Share on other sites More sharing options...
Markheliops Posted January 21, 2019 Author Share Posted January 21, 2019 Thanks Mike - Can you scan the pages for me please. Even if I source a new unit I'll rebuild the old valve as a spare 👍 Quote Link to comment Share on other sites More sharing options...
attleej Posted January 21, 2019 Share Posted January 21, 2019 Mark, It looks to me to be more of an unloader valve than a governor valve. The latter stops the compressor from compressing and is often found with a Cummins engine. Given that you have plenty of space I would think that any suitable unloader valve could be adapted to fit. The only thing that matters is cut out pressure and that is normally adjustable. If you need me to machine an adaptor I can do so and post it to you. John Quote Link to comment Share on other sites More sharing options...
radiomike7 Posted January 21, 2019 Share Posted January 21, 2019 23 minutes ago, attleej said: Mark, It looks to me to be more of an unloader valve than a governor valve. The latter stops the compressor from compressing and is often found with a Cummins engine. Given that you have plenty of space I would think that any suitable unloader valve could be adapted to fit. The only thing that matters is cut out pressure and that is normally adjustable. If you need me to machine an adaptor I can do so and post it to you. John Correct John, it is a line type unloader valve. Mike Quote Link to comment Share on other sites More sharing options...
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