1wonton Posted February 6, 2023 Share Posted February 6, 2023 Can anyone recommend a quality SMC DOT 3/8" tubing and fittings for air brake system? I bought some cheap tubing and connectors on Amazon and they all leak. A waste of time and money. ron Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/ Share on other sites More sharing options...
Popular Post 67RModel Posted February 6, 2023 Popular Post Share Posted February 6, 2023 Go to any of the online vendors that sell only heavy duty truck parts. There are many. AnythingTruck.com is one. McMaster Carr has a decent selection of DOT fittings and tubing. Dealership or independent heavy duty truck shop parts counter is an option too. Personally I would stay away from the push to connect style fittings if possible. 2 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524713 Share on other sites More sharing options...
Joey Mack Posted February 6, 2023 Share Posted February 6, 2023 I dont what SMC is, but when I can I use Brass Compression fittings.. I do use Brass push lock types as well, and I like them, however, I think Compression fittins are the best for a long lasting assembly.. Jojo P.S.: NO Plastic quick connects.. J.M.O. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524717 Share on other sites More sharing options...
mrsmackpaul Posted February 7, 2023 Share Posted February 7, 2023 Im stunned you all shop online with Americas population, truck parts stores should be within 50 miles of most people in the State's In my part of Australia most people try hard to support local businesses Anyway Bendix Westinghouse has been around since the beginning of time and are US based Im pretty sure So I would expect they are fine Depending on what your chasing, I use Ryco a Australian brand I would be surprised if Bendix Westinghouse was crap as I do use them as well and have no dramas Paul Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524767 Share on other sites More sharing options...
Freightrain Posted February 7, 2023 Share Posted February 7, 2023 I wouldn't trust anything from Amazon in this instance. Too much CHI-NA knockoff junk that won't stand up. I have a local truck parts house and buy everything there. 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524774 Share on other sites More sharing options...
1wonton Posted February 7, 2023 Author Share Posted February 7, 2023 Thanks for all the input. My Ridewell axle lift control panel came with SMC DOT push-to-fit connections so that's why I was looking for appropriate connectors. Regular sleeve compression fitting would be usual but if Ridewell uses push-to-fit then shouldn't they be as good, durable? Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524791 Share on other sites More sharing options...
mrsmackpaul Posted February 7, 2023 Share Posted February 7, 2023 If you are replacing these because they have failed I think you have the answer to your question Paul Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524794 Share on other sites More sharing options...
1wonton Posted February 7, 2023 Author Share Posted February 7, 2023 29 minutes ago, mrsmackpaul said: If you are replacing these because they have failed I think you have the answer to your question Paul I just wanted to know if anyone is using push-to-fit fittings and what brand they were using. Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524796 Share on other sites More sharing options...
mrsmackpaul Posted February 7, 2023 Share Posted February 7, 2023 I think most new trucks are built with them these days I reckon the brand of them makes a huge difference They can be really handy in tight spots but can also be very frustrating to get to seal Also need to make sure you dont mix metric and imperial fittings and lines up as they look pretty much the same to my eyes however they aren't forgiving like compression type fittings So my suggestions are Buy good quality brands Buy brass fittings Buy good quality nylon lines that are the exact size your chasing, possibly buy the same brand airline as the air fittings and they should match and seal perfectly And as already suggested by myself, Bendix Westinghouse Good luck Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524797 Share on other sites More sharing options...
67RModel Posted February 7, 2023 Share Posted February 7, 2023 The other thing to note with push connect fittings is they might not seal in vacuum systems. Some shop installed one on the fuel suction line of a series 60 Detroit I once had. After a few miles it developed an air leak and would not stay running at idle. Replaced the push connect fitting with a compression style fitting and the problem was solved. Did I get a bad one or are they just not meant for vacuum? I don't know the answer to either question. I stay away from them if I can. As far as brands I think Parker is one of the biggest name in brass DOT fittings both compression and push connect. Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524800 Share on other sites More sharing options...
Joey Mack Posted February 7, 2023 Share Posted February 7, 2023 67RModel... I second your posting. Push in types have a place, but not in fuel systems. And.... Any one who has been around mid 2000' Macks and Frieghtliner Century/ Columbia's, know all too well how crappy the push in connectors can be.. ie: the air manifolds on Macks behind the pedal's, and behind the trash bin on the Frieghtliner's.. Jojo Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524802 Share on other sites More sharing options...
Onyx610 Posted February 7, 2023 Share Posted February 7, 2023 Most hydraulic shops will carry a wide variety of dot air line fittings. At least In my area anyways. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524819 Share on other sites More sharing options...
mechohaulic Posted February 8, 2023 Share Posted February 8, 2023 I've always believed in supporting local business, challenge is ::and has been discussed here many times , trying to find someone behind the counter that knows what you are asking for. on-line for me is limited to item I'm looking for. most of the old knowledge persons are gone. those left at the local truck parts store are counting the days till retirement. I've dealt with them for 40 + yrs. new management pushes the sell parts needed or not idea. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524823 Share on other sites More sharing options...
Hayseed Posted February 8, 2023 Share Posted February 8, 2023 7 minutes ago, mechohaulic said: challenge is ::and has been discussed here many times , trying to find someone behind the counter that knows what you are asking for. Too true Mechohaulic.. You can't even Buy a Wheel nut to day without quoting a VIN# Sheer madness... Quote "Be who you are and say what you feel...Because those that matter...don't mind...And those that mind....don't matter." - Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524825 Share on other sites More sharing options...
Joey Mack Posted February 8, 2023 Share Posted February 8, 2023 Our LOCAL bussines's, all 2 of them, have some knowledgeable people.. But the parts on the shelf are from China.. I guess they cant afford to keep the good stuff on hand, probably, because we cant afford to pay the high price's.. It's a damn mess... Yeah, I get it... pay the high price for the good stuff so it will last.... but when you are out of service, you are stuck buying the junk, to get you back to work... Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524828 Share on other sites More sharing options...
Popular Post mechohaulic Posted February 8, 2023 Popular Post Share Posted February 8, 2023 sure I mentioned this on here before but; I went into a local part(auto)store looking for new axle lug nuts = standard 1/2x20 ? . parts "clerk" questioned -what's it for? my mistake when i answered a boat trailer. we don't sell boat parts ! same nut as hundreds of auto wheels ass-le. 1 2 Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524829 Share on other sites More sharing options...
Freightrain Posted February 8, 2023 Share Posted February 8, 2023 The reason they want a VIN or what the part is for....is because of liability. The customer buys it, installs it, gets hurt/worse then goes back to parts store to sue them for selling incorrect part. You and I have knowledge and common sense but so many don't and can't be left to themselves to make decisions that are safe. Thus lawyers and VIN numbers!! Sad. 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524869 Share on other sites More sharing options...
mechohaulic Posted February 8, 2023 Share Posted February 8, 2023 SAD but true. never thought I would see the day a cup of coffee has to be labeled---contents hot. Duh. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524890 Share on other sites More sharing options...
Popular Post 1wonton Posted February 8, 2023 Author Popular Post Share Posted February 8, 2023 I neede a 12 volt battery as a spare used to jump any vehicle in my shop. The woman behind the counter asked "what year, model"? I said any generic 12 volt will work; that didn't work so she asked the same question again. I told her it didn't matter, I just wanted a BLOODY TWELVE VOLT BATTERY, do you understand. Well, I guess I had a bad attitude because she said "Don't go there with me"..................I'll never go back to this Napa store again. 2 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524903 Share on other sites More sharing options...
67RModel Posted February 8, 2023 Share Posted February 8, 2023 Did she at least sell you the battery????? Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524904 Share on other sites More sharing options...
mechohaulic Posted February 8, 2023 Share Posted February 8, 2023 1 hour ago, 1wonton said: I neede a 12 volt battery as a spare used to jump any vehicle in my shop. The woman behind the counter asked "what year, model"? I said any generic 12 volt will work; that didn't work so she asked the same question again. I told her it didn't matter, I just wanted a BLOODY TWELVE VOLT BATTERY, do you understand. Well, I guess I had a bad attitude because she said "Don't go there with me"..................I'll never go back to this Napa store again. not defending the counter person; don't think you can call them man/ woman anymore .same as postal clerk no more postman . WTF !! any how I would have thrown the clerk for a loop with " I need something over 450 CCA. it would have put the ball in "her"court. surprised she didn't come out with we don't carry the brand generic! Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524907 Share on other sites More sharing options...
Joey Mack Posted February 8, 2023 Share Posted February 8, 2023 I think he was looking for a battery for a :: '62 Ford Camaro, with a 318 slant six... Just sayin... 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524908 Share on other sites More sharing options...
Mark T Posted February 8, 2023 Share Posted February 8, 2023 7578 side post screw in posts Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524909 Share on other sites More sharing options...
67RModel Posted February 8, 2023 Share Posted February 8, 2023 I knew of a guy that got in an argument with a parts store guy about parts for a GMC with a 305 V6….the parts guy swore up and down no such animal existed and that the only 305 in a GMC truck was a V8….this was like 15 years ago and you would have thought the guy behind the counter would have known better as he was I guess in his fifties at the time Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524913 Share on other sites More sharing options...
mowerman Posted February 9, 2023 Share Posted February 9, 2023 Was just in batteries plus recently and I knew that was going to happen so I just threw out a year and model 68 Cushman battery. I told him it was for a 74 super beetle…. Bob 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72476-dot-tubing/#findComment-524945 Share on other sites More sharing options...
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