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The tractor used shall be the tractor with the greatest weight on which the protective frame is to be used.
A new protective frame and mounting connections of the same design shall be used for each test procedure.
Instantaneous and permanent frame deformation shall be measured and recorded for each segment of the test.
Dimensions relative to the seat shall be determined with the seat unloaded and adjusted to its highest and most rearward latched position provided for a seated operator.
When the seat is offset, the frame loading shall be on the side with the least space between the centerline of the seat and the upright.
The low-temperature impact strength of the material used in the protective structure shall be verified by suitable material tests or material certifications according to 29 CFR 1926.1001(f)(2)(iv).

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