Straydog954 Posted January 27 Share Posted January 27 Hi I have a 96 RD that I’m installing a 12 speed in. The truck was born without an air dryer. The transmission has its own little spin on filter where the air line comes into it. My question is whether or not I need to install an air dryer on this truck or is the transmission filter sufficient? The truck is never run in the winter. Quote Link to comment https://www.bigmacktrucks.com/topic/73794-air-dryer-12-speed/ Share on other sites More sharing options...
Full Floater Posted January 27 Share Posted January 27 It's never a bad idea to run an air dryer. You can run a conventional readily available model like a Bendix AD-9. Doesn't have to be Mack. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/73794-air-dryer-12-speed/#findComment-545679 Share on other sites More sharing options...
terry Posted January 27 Share Posted January 27 Unless you drain tank’s daily get the air dryer. Terry 2 Quote Link to comment https://www.bigmacktrucks.com/topic/73794-air-dryer-12-speed/#findComment-545691 Share on other sites More sharing options...
mrsmackpaul Posted January 28 Share Posted January 28 I never had a air dryer, didnt even know they they existed until a few years ago and all is fine that been said, you need to drain tanks daily in shitful muggy conditions a few times a day The oil stuffs the air valve fittings and pancakes etc as well as o rings I dunno how you stop the oil in the air when it's really muggy, reckon a air dryer would pay for itself pretty quick in that environment, depends were you operate but I don't think it would be a wasted investment Paul Quote Link to comment https://www.bigmacktrucks.com/topic/73794-air-dryer-12-speed/#findComment-545708 Share on other sites More sharing options...
Popular Post Joey Mack Posted January 28 Popular Post Share Posted January 28 even with an air dryer, you need to pull the cables daily.. Air dryers do good if maintained, but most just forget they are there, and water still collects in the tanks.. Air dryer + pulling the cables on the drains will help a lot.. Jojo 4 Quote Link to comment https://www.bigmacktrucks.com/topic/73794-air-dryer-12-speed/#findComment-545712 Share on other sites More sharing options...
Geoff Weeks Posted January 29 Share Posted January 29 I put AD-4's on my stuff, and never had a problem. Ran air start, If I got anything out of the wet tank, it meant I needed to look into what was causing it. Most often it was air leaks. I would go 30 min between compressor cycles running down the highway. If it cycled in less than 15 min I had work to do. Air drier alone isn't much good if the air system leaks like a sieve. Air drier can't do its job if it is constantly cycling. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73794-air-dryer-12-speed/#findComment-545768 Share on other sites More sharing options...
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