Installing SMI Air Force One Supplemental Braking System on 40 Foot Dutchcraft on Spartan Chassis

Question:

What lines to I use to install air force one on my 40ft Dutchcraft/dutch house on Spartan Chassis. How do I install this unit?

asked by: Jimbo F

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 Dutchcraft motor home on the Spartan Chassis 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.

I have attached a photo showing witch line is the supply and which line is the metered.

expert reply by: Victoria B