Finding Where to Connect Air Lines to Motorhome to Install SMI Air Force One
Question:
Installing the Air force one on a Monoco Knight 34foot Road master chassis 2003 model and trying to locate lines to cut into. There is a WABCO unit directly in front of the Drive Axle. One threaded hose and one slip fitted hose both are 5/8. I am looking for the spring brake valve and the only thing I can locate is next to the Allison transmission and it attaches to the Emergency brake on the transmission. It is the only thing that I can find that is mounted to the rear of the Axle like the instructions tell me. It has one 3/8 red line connected to it.
asked by: David R
Expert Reply:
When installing the SMI Air Force One Supplemental Braking System For Motor Homes with Air Brakes # SM99243 you will need to find the supply air line and the metered air line on the motorhome.
On the Monoco Knight 34foot Road master chassis 2003 model the larger 5/8 inch line is the supply air line, and the smaller 3/8 inch line below the supply air line is the metered air line. See attached picture to see them pointed out.
It sounds like what you found so far is not the service relay valve so you'd want to keep looking. I attached a picture of that it would normally look like.
Product Page this Question was Asked From
Demco Air Force One Flat Tow Brake System for RVs w/ Air Brakes - Proportional
- Tow Bar Braking Systems
- Brake Systems
- Proportional System
- One Time Set-Up
- Fixed System
- Power Assist Brake Compatible
- Air Brakes
- Demco
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Vehicle Tow Bar Brake System
- Search Results: air force one
- Search Results: brake light relay
- Q&A: Keeping Water Out of Air Force One Braking System in Automatic Car Wash
- Shop: Roadmaster Brake-Lite Relay Kit for Towed Vehicles
- Shop: Replacement Check Valve for Demco SBS Supplemental Braking Systems
- Shop: Demco Air Force One Flat Tow Brake System for RVs w/ Air Brakes - Proportional
- Shop: Roof Rack
- Q&A: Can Thule Roof Rack Install in Yakima Roof Rack Tracks
- Shop: Fit Kit for Thule Podium-Style Roof Rack Feet - 3101
- Q&A: Choosing Between the Brake Buddy Select 3 and the Blue Ox Patriot Supplemental Braking System
- Shop: Demco Stay-IN-Play Duo Flat Tow Brake System for RVs w/ Hydraulic Brakes - Proportional
- Video: Blue Ox Patriot Portable Braking System Installation - 2022 Ford F-150
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: base plates
- Shop: Base Plate for Tow Bar
- Article: How to Choose the Right Trailer Hitch Class
- Shop: Vehicle Tow Bar Wiring
- Search Results: tow bar
- Video: Review of Blue Ox Tow Bar Braking Systems - Patriot Portable Braking System - BLU37TR
- Q&A: How To Know If Your Tiffin Motorhome Has A Towed Air Brake Setup Or BrakeSync
- Shop: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Q&A: Which is Better Roadmaster or Blue Ox Tow Bar
- Video: Blue Ox Patriot Radio Frequency Portable Braking System Review
- Shop: Blue Ox Patriot Portable Flat Tow Brake System - Proportional
- Search Results: rm~88400
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch
- Shop: Trailer Wiring
- Video: Brake Buddy Classic 3 Portable Supplemental Braking System Installation - 2009 Jeep Wrangler Unlimit