Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
Engage Platform Manual
Release System: The lift
manual release is disengaged
during shipment to prevent
potential drive chain stretch.
Handle the lift with care. En-
gage manual release before
attempting to install (raise, tilt
or move) the lift.
attempting to install
(raise, tilt or move)
lift. Failure to do so
may result in serious
bodily injury and/or
Locate Lift Mounting Brackets
Locate All-Thread Mounting
1. Open both doors to 90°.
2. Locate center of door opening
(between doors). Mark the
3. Transfer center point to the
vehicle frame. Using a front-
to-rear framing member as a
guide, transfer the center point
across chassis to opposite side
front-to-rear framing member
(must be 90° to door opening).
Lift mounting bracket positions
are based on this center line.
4. Measure 20-1/4" to left and
right of the center line to
achieve the 40-1/2" center-to-
center spacing of all-thread
5. Clamp the mounting brackets
securely in place (all-thread
studs must be vertical).
“DOT — Public Use Lift”
NHTSA Vehicle Physical Requirements
Alternative floor structures are allowed
providing the installed lift system pass-
es all FMVSS 403 requirements.
Mounting Bracket Requirements:
A maximum distance of 16
" from the
outermost mounting bracket to the
end of the cassette.
All four mounting brackets must be
connected to the framerails.
All vehicles with a GVW over 6000 lbs.
and with unmodified OEM framerails.
Clear Door Opening Width
Door Opening Dimensions
Vehicle lift access door opening
must meet specified dimensions.
Minimum Clear Door
“DOT - Public Use Lift” verifies this platform lift
meets the “public use lift” requirements of FMVSS
No. 403. This lift may be installed on all vehicles
appropriate for the size and weight of the lift, but
must be installed on buses, school buses, and
multi-purpose passenger vehicles other than
motor homes with a gross vehicle weight rating
(GVWR) that exceeds 4,536 kg (10,000 lb).
Braun Corporation FMVSS No. 403
Quick Reference Installation Sheet 33675