Fran3682821 Posted January 31, 2015 Share Posted January 31, 2015 I have a 2007 CTP 713 Granite Dump truck and I need to install air lines to the back of the truck to hook up to my 3 axle tag trailer. Trying to find a good air system schematic for my truck that would explain the hook up. To make things even more complicated my truck wasn't built ready for a trailer. Single tractor release button on dash only. But it does have the "Bendix " lever on the dash for a trailer. When you pull it the truck brakes activate as it is. Anyways I made the order for the valves that I would need from Mack Ste Foy in Quebec to make this work. Tractor safety valve, double valve for the dash etc. But when I asked the guy if they had a schematic for my truck that would show what lines went where he said he had nothing available. Maybe I should talk to a different salesman there. Wanted to ask the question if anyone on here would know where I could find the air schematic for a truck like mine but trailer ready. Or have some good advice to share. Quote Link to comment Share on other sites More sharing options...
j hancock Posted January 31, 2015 Share Posted January 31, 2015 Here some info. i can't help with a diagram for your truck.http://www.bigmacktrucks.com/index.php?/topic/3903-trailer-lines/?hl=%2Bplumb+%2Btrailer#entry20001Bendix Handbookhttp://www.suspensionspecialists.com/techinfo/Bendix_Brake_Handbook_2009.pdf Quote JimIt doesn't cost anything to pay attention. Link to comment Share on other sites More sharing options...
BC Mack Posted February 1, 2015 Share Posted February 1, 2015 Sealcoverbefore you begin this task of converting the air system you may want to confirm that this truck will be correctly certified for the new combined weight... that will be on the certification sticker on the cab which relates to how this vehicle was originally built. You may need to discuss this with Mack, DOT or an engineering certified conversion company before you add plumbing... is there a hitch already fitted? as the crossmembers and other items may not be of the correct spec for the new gcvw... just asking!!! don't want you to get a non compliance ticket and tow at the first road checkBC Mack Quote Link to comment Share on other sites More sharing options...
wheeler73 Posted February 2, 2015 Share Posted February 2, 2015 You will also need a ABS module for trailer brakes installed. Unfortunately there is no cut and dry air schematics for installing the trailer brakes. Have the Mack dealer print out one for the same year and model with trailer brakes. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.