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Fuel
Systems
Manufacturer Requirements
FEDERAL LAW
183.564 - Fuel tank fill system
(d) Hose clamps used in the tank fill
system must:
(1) Have a minimum nominal band width
of at least one-half inch; and
(2) Be over the hose and the spud, pipe, or hose fitting.
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If hose clamps are used to secure a hose in
the fuel tank fill system, they must have a nominal band width
of at least one-half inch. “Nominal” means that
the normal SAE tolerances specified for hose clamps are acceptable.
SAE states in their J536b standard, “Hose Clamps,”
that a one-half inch band width may actually measure 0.495
inches.
NOTE:
Wire type hose clamps are not acceptable.
Hose and hose clamp installations must be made
so the hose is pushed onto the spud, pipe (smooth pipe is
permitted for fuel tank fill systems) or hose fitting far
enough to permit 2 hose clamps to be fully over the spud pipe
or hose fitting.
NOTE:
The inside diameter of a fuel tank fill hose may NOT be more
than 0.065 inches larger than the minor outside diameter of
the spud, pipe or hose fitting.
FIGURE
32 - Fuel Tank Hose Clamping
TO COMPLY WITH THE LAW
- Do the hose clamps used in the fuel
tank fill system have at least a nominal band width
of one-half inch?
- Are the 2 hose clamps fully over the
spud, pipe or hose fitting?
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