Paul prinzo Posted January 27, 2017 Share Posted January 27, 2017 Can someone tell me how all the lines for the puff valve are suppose to run on my 86 DM800? I have a 7 speed trans that has an line coming off it, does that go directly to the puff valve or to a tee mounted on the firewall that gets supplied by the parking brake valve? Any help would be appreciated Quote Link to comment https://www.bigmacktrucks.com/topic/48541-puff-valve-lines/ Share on other sites More sharing options...
Popular Post j hancock Posted January 28, 2017 Popular Post Share Posted January 28, 2017 My recollection on a little older truck with a different air shift trans. had the air supplying the trans. air filter off the parking brake valve. The air fed the trans shift mechanism and the torque limiter and then sent the air from the torque limiter to the "IN" port on the valve on top of the intake manifold. The "OUT" line runs to the injection pump. "SIGNAL" will be from the boost in the air intake. With the parking brake set, there will be no air in the system allowing more rack in the pump for quicker start and warm up in cold weather. 3 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/48541-puff-valve-lines/#findComment-360029 Share on other sites More sharing options...
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