Pic-6

A D-type push-to-connect bulkhead adapter is then mounted using a nut on the other side. 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 in an application like this, a female D-type connector is more likely to become clogged with dirt and debris. In the background, you can see the manifold tubing running into the wheel well from the tee in the main line and secured with clamps. It was then run up the wheel-well lip to the bulkhead adapter.
Top: The 3/8-inch manifold tubing is routed along the passenger side of the coach. Middle: A tee is used to direct tubing from the manifold into the rear wheel well. Above: Because six-tire kits use a male D-type connector to service the rear duals, the first step is to use a Unibit to drill a .79-inch hole in the fiberglass wheel-well lip.

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