4-24 F-1005-1018
OPERATING INSTRUCTIONS
TABLE OF CONTENTS
Rear Impact Guard System
Vehicle standards FMVSS No. 224, Rear Impact
Protection, requires all 900C Series trailers manufactured
after January 26, 1998 shall be equipped with a rear
impact guard certified by the manufacturer as meeting
FMVSS No. 223, Rear Impact Guards. The guard, or
bumper, (See Figure 3-15), meets the following
requirements:
• minimum of 4 inches vertical height
• extend laterally to within 4 inches of the sides of the
trailer
• ground clearance of no more than 22 inches
• placed no more than 12 inches from the rear of the
trailer.
• capable to deflect 5 inches.
The standard also specifies minimum force and energy
absorption requirements for the guard. A DOT decal
certifies that the guard meets FMVSS No. 223 and 224
standards. The decal is placed and must remain at all
times on the forward facing surface of the guard, 12
inches inboard of the curb side and of the guard. (See
Figure 3-15) for location of decals.
Replace any component that does not allow the above
minimum requirements to be met. Any hardware that
holds the rear impact guard and becomes damaged or
becomes loose shall be removed and replaced. The 3/4”
grade 8 screws that hold the bumper energy pack shall
be loctited and torqued to 280 ft.-lbs.
DANGER
Always check the condition of the rear impact
guard system. If guard system has been
damaged, it must be replaced. Failure to maintain
guard system may result in injury or death to
others.
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