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11
Underride M22416
FMVSS 223 & 224 (Requirements)
Per Federal Motor Vehicle Safety Standards, FMVSS 223 & 224, all trailers and semi-trailers
manufactured after January 26th, 1998, with a GVWR of 4,536 Kg (10,000 lbs.), must be equipped
with a underride bumper.
'The standard does not apply to pole trailers, pulpwood trailers, road construction controlled
horizontal discharge trailers, special purpose vehicles, wheels back vehicles, or temporary living
quarters as defined in 49 CFR 529.2 If a cargo tank motor vehicle, as defined in 49 CFR 171.8 is
certified to carry hazardous materials and has a rear bumper or rear end protection device conform-
ing with 49 CFR part 178 located in the area of the horizontal member of the rear underride guard
required by this standard, the guard need not comply with the energy absorption requirement
(S5.2.2) of 49 CFR 571.223.'
This includes trailers that carry truck-mounted forklifts, while the forklift is not installed. The
trailer manufacturer is responsible for their bumper until it is altered to accommodate a truck-mount-
ed forklift. Since the original width of the bumpers do not allow for the transport of a forklift, the
underride bumper will need to be altered/replaced. The installer of the forklift mounting kit is respon-
sible for replacing the original underride bumper protection with one carrying dimension/certification
that will allow for the forklift to be transported.
Princeton Piggyback, a product of Hiab US, offers a certified replacement bumper kit,
M24416. This is a direct replacement for the previous supplied 628-258.
Note: The underride bumper kit is sold separately and not included in any mounting kit.
For a complete standard listing and definition of terms, please refer to the website,
http://www.ecfr.gov/.
The installation instructions in this manual are to assist in the proper installation of the
replacement underride bumper. Qualified Princeton Piggyback personnel are available to answer
any questions concerning the installation or clarification of this bumper kit at 1-800-331-5851.
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