ThaddeusW Posted February 15, 2006 Share Posted February 15, 2006 I was just looking around and saw a post about an air throttle. I am guessing the accelerator is a pressure regulator that sends an air signal to a piston with a spring. The harder you press the more air pressure the further the piston extends against the spring moving the throttle lever on the pump . What engines used them and are they hard to fix/replace? And if anyone has a picture of the setup that would be great. Quote -Thad What America needs is less bull and more Bulldog! Link to comment Share on other sites More sharing options...
GearheadGrrrl Posted February 15, 2006 Share Posted February 15, 2006 Mack installed them on the 1991 MR tractors built for the Postal Service. Quote Link to comment Share on other sites More sharing options...
Timothy Maikshilo Posted February 15, 2006 Share Posted February 15, 2006 Mack installed them on the 1991 MR tractors built for the Postal Service.Mack also put them on superliners with the E-9 after 1990,Tim Quote Link to comment Share on other sites More sharing options...
Lmackattack Posted February 15, 2006 Share Posted February 15, 2006 we have an air throttle on the companys superliner with the E9. Its real tempermental some times. and tends to make cold starts difficult if the air has leaked down. It is almost like driving a electroinic engine. (on / off)Trent Quote Link to comment Share on other sites More sharing options...
GearheadGrrrl Posted February 15, 2006 Share Posted February 15, 2006 A lot of the air throttles use what looks like a regular brake pedal. They work OK, other than a rough off idle to power transition due to the air system having a crack pressure of 5 psi or so. This was a concern on single axle MRs bobtailing with only 4000 pounds on the rear axle in ice and snow because it set the wheels spinning pulling away from a stop, but with a trailer on it's no problem. As far as not being able to give it some throttle for a cold start when the air tanks were empty... We had air starters so we had to air them up anyways! Quote Link to comment Share on other sites More sharing options...
Timothy Maikshilo Posted February 15, 2006 Share Posted February 15, 2006 A lot of the air throttles use what looks like a regular brake pedal. They work OK, other than a rough off idle to power transition due to the air system having a crack pressure of 5 psi or so. This was a concern on single axle MRs bobtailing with only 4000 pounds on the rear axle in ice and snow because it set the wheels spinning pulling away from a stop, but with a trailer on it's no problem. As far as not being able to give it some throttle for a cold start when the air tanks were empty... We had air starters so we had to air them up anyways!I'm going to have to replace mine soon. when you stomp on it, it squeals bad and the're expensive. Always something to keep you busy and your pocket lite,Tim Quote Link to comment Share on other sites More sharing options...
Lmackattack Posted February 15, 2006 Share Posted February 15, 2006 I'm going to have to replace mine soon. when you stomp on it, it squeals bad and the're expensive. Always something to keep you busy and your pocket lite,TimOur air pedal makes that fart sound also LOL sounds like you steped on one of those prankster hand shake buzzers LOL Quote Link to comment Share on other sites More sharing options...
Timothy Maikshilo Posted February 15, 2006 Share Posted February 15, 2006 Our air pedal makes that fart sound also LOL sounds like you steped on one of those prankster hand shake buzzers LOLHey Trent, it's almost like a foot massage while your driving Tim Quote Link to comment Share on other sites More sharing options...
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