Braun 33657 User Manual
Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
W
A
RNING
VEHICLE
CHASSIS MEMBER
16”
Maximum
VEHICLE
CHASSIS MEMBER
Quick Reference Installation Sheet 33675
Vehicle Requirements:
All vehicles with a GVW over 6000 lbs.
and with unmodified OEM framerails.
Alternative floor structures are allowed
providing the installed lift system passes all FMVSS 403 requirements.
Mounting Bracket Requirements:
A maximum distance of 16
outermost mounting bracket to the
end of the cassette.
All four mounting brackets must be
connected to the framerails.
Figure B
Braun Corporation FMVSS No. 403
“DOT — Public Use Lift”
NHTSA Vehicle Physical Requirements
“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).
" from the
All-thread
Mounting
Brackets
B
A
C
Door Opening Dimensions
Vehicle lift access door opening
must meet specified dimensions.
Minimum Clear Door
A
Opening Height
B
Clear Door Opening Width
C
Maximum Floor-to-Ground
Rev: A
Figure A
604
NA
40-1/2"
34"
Locate Lift Mounting Brackets
1
Locate All-Thread Mounting
Brackets
Figure C
CENTER ACROSS
VEHICLE FRAME
1. Open both doors to 90°.
2. Locate center of door opening
(between doors). Mark the
center point.
3. Transfer center point to the
vehicle frame. Using a frontto-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-tocenter spacing of all-thread
mounting studs.
5. Clamp the mounting brackets
securely in place (all-thread
studs must be vertical).
Engage Platform Manual
Release System: The lift
cable-activated platform
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.
Engage manual
release before
attempting to install
(raise, tilt or move)
lift. Failure to do so
may result in serious
bodily injury and/or
property damage.
All-Thread
Mounting
Brackets
CENTER IN
DOOR OPENING
C
L
90
DOOR OPENING
20-1/4"
40-1/2"
20-1/4"
VEHICLE
BOX FRAME
VEHICLE
CHASSIS MEMBER
Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
Secure Lift
2
Attach Mounting Brackets to
Vehicle Frame
Mounting bolts must be routed
horizontally through the vertical face of the “L” brackets and
framing members as shown in
Figures D, E and F.
Eight 3/8-16 x 1-1/2" hex bolts
are supplied for bolting the allthread mounting brackets to the
frame (two per bracket). Oval
slotted mounting holes are provided in the mounting brackets
to allow adjustment. Carefully
drill 25/64" (.390") diameter
mounting holes at the center of
the oval mounting slots.
Channel Frame Applications:
Secure mounting bolts as speci-
fied in Figure D.
Box Frame Spacers: Position
tubing spacers as shown at
right to prevent collapsing the
box frame. Carefully drill a
25/64" (.390") diameter mounting hole through one side of the
box frame. Drill a 5/8" (.625")
diameter hole through the
opposite side of box frame to
allow installation of spacer. Cut
spacer tubing to length (equal
to thickness of box frame).
Note: A longer 3/8-16 bolt will
be required for box frame applications. Secure mounting bolts
as specified in Figures E and F.
All fasteners must meet FMVSS 571.403 Section 6.3.
Shipping Block Removal:
Wood blocks are placed in the
lift housing to prevent lift damage during shipment. Remove
shipping blocks from platform
and carriage before running
(activating) lift. Refer to
Shipping Block Removal
Instruction 28942.
Hex
Nut
Lock
Washer
Flat
Washer
All-Thread
Bracket
“Box” Framing Member
Figure E
All-Thread
Bracket
3/8-16 x 1-1/2"
Hex Bolt
Flat Washer
3/8-16
Hex Bolt
“Box” Framing Member
All-Thread
Flat Washer
Bracket
Figure F
“Channel” Framing Member
Figure D
3/8-16 x 1-1/2"
Hex Bolt
Hex
Flat
Nut
Washer
Spacer
5/8"
Diameter
Box
Framing
Member
Assembled
25/64"
Diameter
Hole
Washer
Spacer
Hole
Flat
Spacer Tubing
Length: Equal
to thickness of
box frame.
Lock
Washer
Hex
Nut
Lock
Washer
Figure G
VEHICLE
CHASSIS MEMBER
Align mounting clamps
with all-thread studs.
Position and secure lift.
Thread two 3/4" hex jam nuts fully
onto each mounting bracket all-thread
stud. Place one large diameter flat
washer onto each all-thread stud (use
tape to hold in place). See Figures G
and H.
Carefully position lift under vehicle
(aligned with mounting brackets).
Position (slide) the four lift mounting
clamps along the sides of the lift housing until aligned with mounting bracket
all-thread studs. See Figure G.
Height Adjustment
The lift housing must be
aligned with vehicle chassis. Adjust the 3/4" hex jam
nuts on the all-thread mounting studs at all 4 corners of
the lift until dimensions A, B, C
and D are equal (within 1/16").
See Figure J.
In-Out Positioning
Position the lift to achieve a 2”
overlap between the deployed
inboard barrier and the vehicle
floor.
Tighten upper set of 3/4" hex
jam nuts (with flat washer)
down to the lift mounting
clamps. Tighten jam nuts.
Torque Specifications: 100
to 120 foot pounds.
VEHICLE
CHASSIS MEMBER
Note: The two outboard mounting
brackets should be positioned a
maximum of 16” from the end of the
cassette. See Figure J.
Carefully raise lift into position as high
as possible (height adjustment outlined
below). Place one large diameter flat
washer onto each mounting bracket allthread stud. Thread two 3/4" hex jam
nuts fully onto each all-thread stud (up
against lift mounting clamp).
All-Thread
Stud
Flat
Washer
A
Figure H
CHASSIS MEMBER
Lift
Jam Nuts
Lift Clamp
Jam Nuts
Shift lift and mounting brackets
left-to-right as needed (lift must
be centered in door opening).
Tighten the 3/8" bolts securing
mounting brackets to the frame.
Torque Specifications: 25 to 30
foot pounds.
Clamp
Jam Nuts
Flat Washer
Lift Clamp
Flat Washer
Jam Nuts
B
VEHICLE
VEHICLE
CHASSIS MEMBER
D
16”
Maximum
Figure I
Dimensions
A, B, C and D
must be equal
(within 1/16
Figure J
Lift
Housing
Lift
Housing
").
C
Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
3
Electrical, Hydraulic and Interlock
Pump
Mounting
Bracket
Min.
1-3/4”
to
Wall
Pump
must
face
Out
Mount
Pump
Vertical
1/4-20 x 3/8"
Hex Screws
Lock
Washer
Reinforcement
“L” Bracket
Cable-activated
Manual Release
(from lift)
7/8" Diameter
Mounting Hole
Through-Floor
Cable and Hose
Grommet
(3" Diameter
Mounting Hole)
Figure K
Note:
Remove
plug from
vent tube.
Connect red positive
(+) power cable here
(from Circuit Sentry).
Beeper/Strobe Alarm
and Platform Lights:
Connect harnesses to
mating harnesses at
pump (labeled). Detailed
installation instructions
supplied with kits.
Chassis
5/16"
External Tooth
Star Washer
9/32"
Diameter
Pilot Hole
Thread
Cutting
Screw
Figure L
Ground Cable Mounting
Pump Ground Cable:
One ground cable is pump
mounted. Route this ground cable
through the �oor grommet and con-
nect to a vehicle framing member
(see Figure L).
Vehicle Battery Ground Cable:
A ground cable (minimum 2 gauge)
must be connected from vehicle
battery negative post to the same
vehicle framing member the pump
ground cable is attached to.
Ground Cable Corrosion:
When mounting ground
cables, remove undercoating, dirt, rust, etc. from
framing member around
mounting holes. Apply
protective coating to mounting holes to prevent corrosion. Failure to do so will
void warranty of certain
electrical components.
Housing/Carriage Harnesses:
Route two main wiring
harnesses from lift through
�oor grommet to pump
module. Connect to mating harnesses at pump.
5/16"
Lag Bolts
(typical - 4)
Note: Seal the
floor cable and
hose grommet
following installation procedures
(fill with silicone).
Pump Module Mounting
Mount reinforcement “L” bracket
to pump mounting bracket as
shown in Figure K. Secure
pump mounting bracket to floor
using four 5/16" lag bolts.
Check under vehicle for
obstructions before drilling,
cutting holes or installing
�oor mounting hardware.
Note: Locate and drill pump
module mounting holes, floor
grommet 3" diameter hole and
manual release 7/8" diameter
hole before mounting pump.
Cable-activated Manual
Release: The T-handle must
be mounted inside the vehicle.
The cable must operate freely
(no kinks or bends). Warning
tag 81823 must remain attached
to the handle. Remove handle
for installation.
Figure N
Note: All
wiring harness
connections
must be
inside the
vehicle.
Vehicle and Lift Interlocks
The pump module is equipped
with a lift interface 9-circuit
connector (female socket).
A mating 9-circuit connector
(male plug) is supplied.
To meet minimum
NHTSA requirements,
connect to vehicle interlock harness as outlined
in Figure N (Steps 1-4).
Optional Interlock Kits
Optional interlock kits are
available. Contact The
Braun Corporation for appropriate applications.
Power Cable
Aux.
Bat.
Pos.
Neg.
1/8" x 4" x 4"
Plastic
12"
Max.
Circuit
Sentry
Lead
Cable
Hydraulics:
Remove the plug
from 1/4" diameter
clear vent tube.
See Figure N.
Route hydraulic
hose assembly
through floor
grommet to quickdisconnect fitting at
lift. Connect hose.
Circuit Sentry:
Install Circuit
Sentry as shown
in Figure M. Attach power cable
and lead cable as
detailed.
Figure M
Calibration and Floor
Level Adjustment
Following electrical,
hyrdaulic and interlock
installation, check
calibration and floor level
adjustments as defined
in Panel 4.
Threshold Warning Sensor:
Connect harness to mating harness at pump module (labeled).
Mat must be installed on a flat
rigid surface. Inboard edge of mat
must be minimum 18" from edge
of finished floor or stepwell.
Disconnect
2
1
Disconnect
and remove
eye terminal
Main Lift Wiring
Harnesses
To Lift
Strobe Alarm
Platform Lights
(wires labeled)
Threshold Mat
4
Connect
3
Connect vehicle
interlock signal wires
LIFT STOWED
SIGNAL
(Yellow/Light Blue)
VEHICLE SECURE
SIGNAL
(Grey/Red)
To Interlock
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