Rocko1964 Posted August 11, 2016 Share Posted August 11, 2016 Hi My trailer brakes are very slow to release. Can anyone help please Thanks Ross Quote Link to comment https://www.bigmacktrucks.com/topic/46405-trailer-brakes-slow-to-release/ Share on other sites More sharing options...
alex g Posted August 11, 2016 Share Posted August 11, 2016 Could be a few things. Possible air valve sticking or brake chamber failing. I had a brake cam seize up once too. I had to remove it and clean shaft grease it and reinstall it. Sent from my SM-G386W using Tapatalk 1 Quote Link to comment https://www.bigmacktrucks.com/topic/46405-trailer-brakes-slow-to-release/#findComment-341950 Share on other sites More sharing options...
Truck Shop Posted August 11, 2016 Share Posted August 11, 2016 What type of trailer is it and how old? How many relay valves and air tanks are there? And how many axles? Have you checked the supply line from the tractor? Are you talking about service brakes being slow or parking brakes being slow to release. Just some questions to get a place to start. Truck Shop Quote One ping only Link to comment https://www.bigmacktrucks.com/topic/46405-trailer-brakes-slow-to-release/#findComment-341952 Share on other sites More sharing options...
jackb61sx Posted August 11, 2016 Share Posted August 11, 2016 I had a similar issue on the brakes of my Lowbed they where very slow to release whenever I had to separate the trailer, I ended up replacing the valve on the air tank for the trailer, after I replaced all the issues went away. Quote Link to comment https://www.bigmacktrucks.com/topic/46405-trailer-brakes-slow-to-release/#findComment-341953 Share on other sites More sharing options...
fjh Posted August 28, 2016 Share Posted August 28, 2016 Check the valve on the trailer the emergency line goes to from the truck remove the fitting some times there is s screen in this fiting that plugs up in this valve! Quote Link to comment https://www.bigmacktrucks.com/topic/46405-trailer-brakes-slow-to-release/#findComment-343829 Share on other sites More sharing options...
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