Its a Coachman thing since those tanks were mostly under the dinettes installed perpendicular to the body. versus in the rear of the coach where they
were in parallel to the body.
At least in my coach a PO had cut out an access hole for the level gauge in the back of the dinnette housing as you open the door. This saved me
from pulling the entire tank out to get at the gauge.
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77 Royale, Rear Dry Bath. 403, 3.55 Final Drive, Lenzi goodies, Patterson carb and dizzy.
Mid Michigan