How do you remove the throttle petal on my 91 Cat 3208 air operated throttle. I couldn't find any thing in search mode. It should be easy, but if some one
Has done it, thank you for sharing your experience. Have a great day. ---- Fritz
Try the thread linked below. If you scroll through from start to finish, I think it will answer your questions.
Williams Controls WM453109 Air Throttle Valve (https://www.foreforums.com/index.php?topic=27762)
Thanks Chuck, looks like I have a tough task ahead of me! Have a great day ---- Fritz
Why do you want to remove the throttle pedal? In my "What if" file i have a plan outlined if the throttle cable and air cylinder come a crapper.
I have an air leak coming from around the throttle pedal. I can't tell exactly where, but I can feel it around the boot. I need to check from under the coach and see what (if anything) is going on with air connectors. From what I can determine, there doesn't seem to be a way for air to get into the cab from a leaky fitting, but I need to confirm that. Have a great day ---- Fritz
I predict that you will find the leak is in the valve itself - not from the air line connectors below the floor.
The symptoms you describe exactly match those I reported in my thread linked up above.
Known as a treadle valve and does have a history of leaking on vehicles.
It was not the treadle valve (which is the brake control valve), it was the throttle control valve (accelerator valve). I replaced it with a new valve obtained from "brake systems inc" jn Portland Ore. On my rig, the valve would not come out into the cab because the air hoses were too short. When I put it all back in, I added an extension onto the hoses so that it would pull up into the cab if I ever needed to do it again. Have a great day ---- Fritz
It is still referred as a treadle valve even though it if for throttle.
112479 by WILLIAMS CONTROLS - TREADLE VALVE 112479 (https://www.finditparts.com/products/562952/williams-valves-112479)
Could well be ----- My air diagram calls the brake a treadle valve and the accelerator valve a throttle control valve. It only matters if you are getting a replacement valve to be sure that you are asking for the right one. Have a great day ---- Fritz