John Comber Posted August 9, 2013 Share Posted August 9, 2013 Question, help please! In finishing my trailer and putting air through the system, the air over hydraulic front brakes operate as soon as the emergency line is opened, so I assume we have a stuck valve somewhere , just got off my back after wacking all valves with a hammer in frustration, does anyone know or have a layout drawing of the valve blocks? Quote Link to comment Share on other sites More sharing options...
Hoseman Posted August 10, 2013 Share Posted August 10, 2013 I haven't diagrams but if I can help just ask. I'm hydraulics engineer and work on both hydraulic and pneumatic systems Quote Link to comment Share on other sites More sharing options...
jcbpete Posted August 11, 2013 Share Posted August 11, 2013 Question, help please!In finishing my trailer and putting air through the system, the air over hydraulic front brakes operate as soon as the emergency line is opened, so I assume we have a stuck valve somewhere , just got off my back after wacking all valves with a hammer in frustration, does anyone know or have a layout drawing of the valve blocks? john check the valves were hoses from draw bar join trailer. Quote Link to comment Share on other sites More sharing options...
John Comber Posted August 11, 2013 Author Share Posted August 11, 2013 Hi Pete, thanks I assume these are non return valves ? In having another look yesterday I see the emergency line letting air back a little once disconnected which it should not, was going to purchase some WD 40 in liquid form to pour down the lines and blow through first , I recall on my old sentinel trailer I used to have to do that to stopped sticking valves. See you at Dorset, going to run down on sat afternoon and meet Bonzo to run together the last leg, be a good photo two Constructors coming over Coombe Bisett ! Quote Link to comment Share on other sites More sharing options...
Hoseman Posted August 14, 2013 Share Posted August 14, 2013 Hi Pete, thanks I assume these are non return valves ? In having another look yesterday I see the emergency line letting air back a little once disconnected which it should not, was going to purchase some WD 40 in liquid form to pour down the lines and blow through first , I recall on my old sentinel trailer I used to have to do that to stopped sticking valves.See you at Dorset, going to run down on sat afternoon and meet Bonzo to run together the last leg, be a good photo two Constructors coming over Coombe Bisett ! You could also use air tool oil! Bit in the lines, what it's designed for. Quote Link to comment Share on other sites More sharing options...
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