| Author | Message | ||
| Ken Munford
Rating: N/A |
I'm up dating my brake system to meet FVMS 171 and things were going good until I got to the inversion valve. My 1971 Eagle has the 2 delivery ports pluged off and 2 of the 3 control valves go to the parking brake can and I don't remember where the 3rd control port went. The later Eagle I looked at had the 2 delivery ports go to the parking brake and 2 of the control ports go to the servive brake and thats all I can see. Sure could use some help here . There are 2 delivery ports ,3 control ports and 1 supply ports. I know this is along post but I don't know how to make it any shorter. Thanks in advanve . Ya'll help in the past has always been good. | ||
| Ian Giffin (Admin)
Rating: N/A |
Ken, Since no one else is answering, I'm going to take a guess... may I suggest that the 3rd control port returns to the brake pedal treddle intake? Here's a picture that may help:  Ian www.busnut.com PS. Where's Buswarrior when you need him? Quick, someone shine the bat-light into the sky!! PPS. This picture also shows a trailer brake circuit up to the gladhands, but it's the same as a bus without that circuit. | ||
| Ken Munford
Rating: N/A |
Thank /an Maybe the next time we meet I'll have this bird on the road.(if the world last that long)LOL. Say hi to the misses from Sherry and I. Ken | ||
| Buswarrior (Buswarrior)
Rating: N/A |
Eh? Here I be. Hello Ken. Am I correct in assuming your intent is to update your brake system to a post 1975 style dual circuit set-up from a pre-1975 single circuit design? Federal Motor Vehicle Safety Standard 121? If so, you have my encouragement and support! My questions to help me understand what you have written: 1) Which kind of rear brake chambers does your Eagle have? Two or three air lines attached? 2) The device/valve you refer to as "inversion valve" is located where in relation to the other parts of your brake system? 3) Is this "inversion valve" different from what some folks would call a "relay valve"? 4) Where are you? If you happen to be next door, lots' easier for me to come 'round! I'm in Toronto, Ontario. 5) Do you have a digital camera for taking pictures of the offending parts, and send them along? Ian and I can fix them for showing on BNO for the rest of the crowd if you don't want to get into picture posting. Click on my name, and your e-mail program might do the rest! Many valves used in our brake systems have more ports/openings for attaching lines that we need. Gives the valve flexibility in mounting/positioning and use in other applications. The unused ports are plugged. The trick is using the right ones, and plugging the right ones! Have no fear, we'll get you through this! happy coaching! buswarrior | ||
| Ken Munford
Rating: N/A |
Hello Buswarrior The inversion valve on my Eagle is attached to a braket on the rear end. I only have to lines coming out of my new spring brake chambers and the back 2 went to the inversion valve.I think 1 line comes off the treadler ,then to the inversion on to the relay and then to the spring brake but I'm not sure.Sorry about the brain freeze, it is the FMVSS121 I was refering to. I live in Rich. Va. so I don't think to can just hop over lol. Any help would be greatly appreciated. Ken Munford kennymunford@earthlink.net | ||
| John Jewett (Jayjay)
Rating: N/A |
I just installed a new TR-2 inversion valve on my GM 4905, and the supply went into the top, then there are two chambers below that . The upper one has two lines- one to each parking brake portion of the brake can. (That's the rear end) The lower chamber's two hoses go to the "lock" port (front of the can) $97.50 for the valve, and $7.40 for the iodine and Neosporin for the skinned knuckles to install it. The R-6 relay valve output lines go to the service brake port on the cans. The TR-2 controls the parking brake system, and the relay valve is sort of like a step-up transformer, in that it uses a little air pressure to deliver a LOT of braking air pressure at the can, and it also speeds up brake application, Cheers...JJ | ||
| Ken Munford
Rating: N/A |
Thanks Jayjay That seems to be the way it was on the later Eagle I saw. $7.40 for the Neosporin LOL that's funny. |