Outdoor Adventure Box
(4, 5) Here is the finished control panel viewed from front and rear. Front view shows the Schrader valve (left), which allows the user to attach a gauge (or any standard inflation device) and the three ball-valve assemblies, which offer different functions. From left, the first valve is used to quickly air down all six tires for better traction in mud, snow, etc. It can also be fitted with a common male D-type connector to inflate all tires at once with the quick-disconnect from a compressed air hose. This is an important feature, since finding clear access to filling stations where a hose can reach all tires can be difficult. The centralized valve design allows the user to “nudge” up to the air source and inflate all tires the rest of the way without stretching hoses. The center ball valve is fitted with a brass pressure-relief valve that is preset in this application to 80 psi; once that pressure is reached, the valve “burps” additional pressure until the inflation source (air compressor, air tank, etc.) is turned off. To the right is the main control valve, which allows air into the system; it can be closed so the 2wayair system does not interfere with other onboard air systems that may be on the vehicle. In the center is the aforementioned liquid-filled pressure gauge. Note that all fittings are O-ring sealed, push-to-connect.
(9) Dually kits use a male D-type connector at the rear. First, a Unibit is used to drill a .790-inch hole in the rocker panel near the tires, then a D-type push-to-connect bulkhead adapter is installed using a nut on the other side. (10) The male D-type fitting is then installed into the bulkhead adapter and tightened. Typically, a female fitting is used on the supply side of an air system, but here a female D-type connector is more likely to become clogged with dirt and debris. A male fitting has no moving parts, and the plastic cap keeps dirt out. (11) Here is the rear D-type fitting (with cap) and adapter, with the 3/8-inch polyurethane manifold tubing pushed into place.
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