Page 1
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"
Page 2
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
Page 3
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
Page 4
Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
C
C
Calibration and Floor Level Adjustment
4
Platform Sense Calibration
1. There must be no weight on platform.
2. Press hand-held pendant UP switch to raise platform a minimum
3" above stow level.
3. Press and hold control board 50# CAL. button. While pressing
the 50# CAL. button, press and hold the hand-held pendant
STOW switch (button). The platform will lower to stow level
(begin stow function), and then start to raise. Release 50# CAL.
button immediately when platform starts to raise from stow level.
4. After calibration, the LCD screen should read “PF OCCUPIED”
whenever there is 50 lbs. or more present on the platform. The
50 pound platform sensing is now calibrated.
Ground Sense Calibration
1. Press hand-held pendant DOWN switch to lower platform fully to
ground level.
2. While continuing to press the pendant DOWN switch, press and
then release the control board O_BAR GND. button.
3. Release the pendant DOWN switch.Ground level sensing is now
calibrated.
Outer Barrier Occupied Calibration
1. Press hand-held pendant DOWN switch to lower platform fully to
ground level.
2. Once outer barrier is fully unfolded (ramp position), release the
pendant DOWN switch.
3. Press and hold the control board O_BAR GND. button. While
holding O_BAR GND. button, press hand-held pendant UP
switch to raise the outer barrier. Be sure to release O_BAR
GND. button when outer barrier reaches approximately half full
up (vertical) position.
4. After calibration, the LCD screen should read “OUT-BAR OCCUPIED” whenever there is weight present on the outer barrier.
Floor Level Switch
The Floor Level switch stops upward travel of the platform
during the Up function (activated by the torque tube-mounted
Floor Level cam). Position the lift platform 1" above �oor
level using the manual operation system (detailed on
opposite side of this sheet). Loosen the clamp securing the
torque tube-mounted Floor Level cam. Rotate the cam until
the Floor Level switch is activated (cam depresses switch).
Note: Check the �oor level position of the platform and the
inner roll stop after powering the pump. Hydraulic pressure
may affect platform height slightly. Fine tuning adjustment
(tweaking) of the Floor Level switch may be required.
The inner roll stop must rest properly on the vehicle �oor
when the lift is deployed. Adjust the inner roll stop only if
necessary (refer to the service manual).
Floor Level Cam
Torque Tube
NUVL Control Board 31414A-NS
R39
U16
102
R13
103
R5
R20R19
103
D
ABC
103
R18
103
Lift Devices
K
JIH
D/S
3 2 1
3 2 1
J1
J2
HAND-1
HAND-2
INLK-1
U21
OH
4 3 2 1
3 2 1
Operator
Door
IN
FS11
C16
35A
220
U20
R25
102
R43
1802
R41
GND
PWR-IN
12V-B
U22
50# CAL
Button
L
8.00M
U14
G
U/D
C7
Remote
D23
D24
D25
R28
103
106 E
U18
Magnetic
C9
RL11
RL10
MAT
VR3
IN L H
C12
FS1
VR2
VR1
FS2
FS8
LIGHT
102
R42
102
103
103
C11
LCD MODULE
C6
cycle
R31
B LIGHT A
103
R27
103
R16
diag
103
U12
C14
U5
C15
102
ZD3
R33
103
R11
R37
C5
R36
CLOSECLOSE
103
103
U7
U17
OPEN
D13
D10D11
C22
100
VHA
D12
C10
U19
R34
C13
RL4
RL9
D9
FS7
ALARM
ALARM
R9
50# CAL
SW1
R10
GROUND LVL
O_BAR
SW2
O_BAR GROUND
CONTRAST
102
102
R29
U3
CHA
C21
U2
R42
102
U22
C11
RL3
FS10
FS9
VALVE
PUMP
R4
R2
R1
103
R6
103
R7
103
LVL Button
220
R32
C1
R38
102
U15
103
R1
R26
D26
330
C8
220
35A
LIGHT
Floor Level Switch
Cam depressing switch.
103
103
FMVSS 403/404 Certification Checklist
5
Visual and Audible
Threshold Warning
D7 D8
D5 D6 D3 D4
D2 D1
102
102
C20
CHA
220
U8
8.00M
L_UP
102
R9
50# CAL
R10
GROUND LVL
O_BAR
D19
MP916
0.010Ω
.5% R
R40
V104
103
103
V104
L_DN
C4
R15
102
R14
B_DN
B_UP
103
R8
103
C3
L_IN
L_OUT
R4
103
R2
103
NUVL CONTROLLER REV-3.1-1
The Braun Corporation
C2
R1
103
SW1
R6
103
R7
103
SW2
RL2
RL1
D20
D16
D17
D15
D21
D18
D14
R3
U9
FS6
FS4
FS5
FS3
B_UP
L_IN
L_OUT
B_DN
3
L_IN
The Braun
C2
Threshold
Sensor Mat
Threshold
Area
Platform
Lighting
DOT — Public Use Lift
Public use vehicle manufacturers
are responsible for complying with
the lift lighting requirements in Federal Motor Vehicle Safety Standard
No. 404, Platform Lift Installation in
Motor Vehicles (49 CFR 571.404).
Inner
Roll Stop
orporation
Platform
Dual
The operations listed below must be
functionally veri�ed.
Vehicle movement is prevented unless the lift
door is closed, ensuring the lift is stowed.
Lift operation shall be prevented unless the
vehicle is stopped and vehicle movement is
prevented.
The platform will not fold/stow if occupied.
The inner roll stop will not raise if occupied.
The outer barrier will not raise if occupied
Verify platform lighting when lift is deployed
and pendant illumination when lift is powered.
A visual and audible warning will activate if
the threshold area is occupied when the platform is at least one inch below �oor level.
Platform movement is prohibited beyond
the position where the inner roll stop is fully
deployed (up).
Lift platform movement shall be interrupted
unless the outer barrier is deployed (up).
Outer Barrier
33675 Rev. A
Page 5
Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
Lift Operating Instructions
Lift Operating Instructions
TO LOAD PASSENGER:
1. Read Notes below! Load passen-
ger onto platform, lock wheelchair
brakes and fasten handrail belt.
Note: Outer barrier must be fully
unfolded (ramp position) until the
entire wheelchair (or standee) has
crossed the outer barrier.
Note: Passenger must be
positioned fully inside yellow
boundaries.
2. Press UP switch to fold outer bar-
rier UP fully (vertical), raise the
platform to floor level and unfold
inner roll stop to floor level. Release switch.
3. Unlock wheelchair brakes and
unload passenger from platform.
TO STOW PLATFORM:
1. Fasten handrail belt.
2. Press STOW switch until platform
stops at stow level. Release
switch.
3. Unfasten handrail belt.
4. Press STOW switch until platform
stops (retracts fully). Release
switch.
CLOSE DOOR(S)
Manually close door(s) fully.
OPEN DOOR(S) AND SECURE
Manually open door(s) fully and
secure.
TO DEPLOY PLATFORM:
1. Stand clear and press the UP
switch until the platform stops (extends fully). Release switch.
2. Fasten handrail belt.
3. Press the UP switch until the plat-
form stops (raises to floor level)
and inner roll stop unfolds to floor
level. Release switch.
TO UNLOAD PASSENGER:
1. Fasten handrail belt.
2. Read Note below! Load pas-
senger onto platform and lock
wheelchair brakes.
Note: Passenger must be
positioned fully inside yellow
boundaries and outer barrier must
be UP.
3. Press DOWN switch until the entire
platform reaches ground level and
the outer barrier unfolds fully
(ramp position). Release switch.
4. Unfasten handrail belt, unlock
wheelchair brakes and unload passenger from platform.
Note: Outer barrier must be fully
unfolded (ramp position) until the
entire wheelchair (or standee) has
crossed the outer barrier.
W
A
RNING
Whenever a
passenger is on the
platform, the:
• Handrail belt must
be latched
• Passenger must
be positioned
fully inside yellow
boundaries
• Wheelchair brakes
must be locked
• Inner roll stop and
outer barrier must
be up.
Failure to do so may
result in serious
bodily injury and/or
property damage.
Control Switch Functions:
UP: From the stowed position, pressing the UP
switch deploys (extends) the platform fully. The
restraint belt must then be fastened before the
platform will raise. With the belt latched, pressing
the UP switch then raises the platform to floor level
height.
From ground level, the UP function will first automatically raise (rotate) the outer barrier to the
upright (vertical) position. The platform then raises
to floor level position. Note: The lift will not raise if
the restraint belt is not fastened or the outer barrier
is not in the UP position (built-in safety features).
DOWN: The DOWN function lowers the platform
to ground level and then unfolds the outer barrier to
the ramp (horizontal) position. Note: The handrail
belt must be latched to activate the DOWN function.
From the stowed position, the lift will extend fully
and stop. The restraint belt must then be fastened
before the platform will lower.
STOW: When the STOW switch is pressed, the
platform first raises or lowers to stow level, starts
to retract and then stops (restraint belt must be
latched). The restraint belt must then be unfastened before the platform will stow (retract) fully.
With the belt unlatched, pressing the STOW switch
then retracts the platform to the fully stowed position. Note: The lift will not stow with weight on the
platform (built-in safety feature).
DOOR CLOSE: This function is not applicable
for “Public-Use” NUVL Lift Models (manual door
system and attendant operated lift).
Note: If any of these functions do not occur as
described, discontinue lift use immediately and
contact your sales representative or call The
Braun Corporation at 1-800-THE LIFT
®
. One of
our national Product Support representatives will
direct you to an authorized service repairman who
will inspect your lift.
Before lift operation, park the
vehicle on a level surface, away
from vehicular traffic. Place the
vehicle transmission in “Park”
and engage the parking brake.
Open manual doors fully, being
certain the doors are secured in
the fully open position.
It is the responsibility of the lift
operator (attendant) to properly open, secure and close the
vehicle lift doors, to activate any
auxiliary interlock (if equipped),
to load and unload the wheelchair passenger (or standee) on
and off the lift platform, and to
properly activate all lift functions.
In event of power or equipment
failure, refer to the Manual Operating Instructions section.
Interlocking Restraint Belt: The
NUVL604XB is equipped with an
occupant restraint belt assembly
(mounted to the lift handrails).
Once the lift platform has extended
fully from the stowed position, the
belt must be latched in order to
raise or lower the platform. During
the Stow function, the belt must
be unfastened after the platform
raises or lowers to stow level and
stops. With the belt unlatched,
pressing the STOW switch then
retracts the platform fully.
Hand-held Pendant Control:
The hand-held attendent's pendant control is
equipped with four push button switches (DOOR,
STOW, DOWN and UP). The momentary switches
activate the automatic lift functions. Simply press
the switch labeled for the intended function.
When there is power to the lift, the lift function labels
illuminate to identify the functions.
DOOR STOW
DOWN UP
Hand-held Pendant Control
Page 6
Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
Manual Operating Instructions
In event of power or equipment
failure, refer to the Manual
Operating Instructions to manually operate the lift. Refer to the
Lift Operating Instructions for all
normal lift operation procedures
(such as loading and unloading
passengers). Follow all Lift
Operation Safety Precautions
at all times!
Familiarize yourself with the
components necessary to
manually operate the lift. The
Cable-Activated Platform Manual Release System
Platform Manual Release System: A cable-activated manual
release system releases and
engages the platform carriage
assembly drive chain to allow the
platform carriage assembly to be
manually moved out (extended)
or moved in (retracted) as needed. A T-handle is provided on the
release cable for activation of the
manual release system (details
follow).
After manually moving the
platform in or out, it is extremely
important that the cable-activated manual release is positively
re-engaged to secure (lock) the
platform carriage assembly before
loading a passenger on the platform or before driving the vehicle.
Grasp the outer barrier and move
the platform in and out until the
platform locks (chain release
assembly engages), securing the
platform carriage assembly within
the housing. You will feel the
release mechanism engage.
T-handle release cable releases and engages the lift
platform to allow the platform
to be manually extended and
retracted. The manual backup pump (hand pump) is
used to manually lower and
raise the extended platform.
The location of the power
pack and release cable varies from vehicle to vehicle
(depending on your particular
installation).
Failure to manually lock the platform carriage assembly (re-engage the carriage assembly drive
chain) after manual deployment,
will allow the platform to roll in or
out of housing unhindered during
vehicle movement. Failure to lock
the platform will also allow the
platform to roll in or out of housing unhindered during hand pump
raising and lowering procedures.
After manually releasing
platform, push manual release
T-handle in fully and ensure
platform is locked before driving lift vehicle. Uncontrolled
and unintentional platform deployment (inadvertent platform
ejection) may result in serious
bodily injury and/or property
damage.
Note: The lift platform must be
pushed back into its carriage
compartment all the way before
reverting back to normal (powered) operation. When the lift is
Hand
Pump
Pump
T-Handle
Release
Cable
fully extended manually, it does
not activate the proper switches
for normal operation. Returning
(moving) the lift in fully in allows
for proper switch activation.
POWER
PACK
Note: Location of power
pack and T-handle varies.
A
W
Push T-handle in fully and
manually move platform in
and out to engage platform
lock before driving vehicle.
Failure to lock platform may
result in unintended platform
deployment. Unintended
platform deployment may
result in serious bodily injury
and/or property damage.
Handle
Valve
RNING
Manual Operating Instructions
OUT (TO EXTEND PLATFORM):
1. Pull T-Handle.
2. Turn T-Handle to lock platform in released position.
3. Pull platform out.
4. Turn T-Handle.
5. Push T-Handle in.
6. Grasp outer barrier and attempt to move
platform in and out until the platform
locks (feel release mechanism engage).
DOWN (TO LOWER PLATFORM):
Using hand pump handle, open hand pump
valve (turn counterclockwise). Open 1/2
turn only.
DOWN (TO UNFOLD OUTER BARRIER):
1. Remove hairpin cotter from detent pin.
2. Remove detent pin.
3. Unfold (rotate) barrier down.
UP (TO FOLD OUTER BARRIER):
1. Fold (rotate) barrier up.
2. Insert detent pin.
3. Insert hairpin cotter in detent pin.
UP (TO RAISE PLATFORM):
Using hand pump handle:
1. Close hand pump valve (turn clockwise).
2. Insert handle in pump and stroke.
Note: Close valve before operating
electric pump.
IN (TO STOW PLATFORM):
1. Raise or lower platform to stow level
(follow UP or DOWN procedures).
2. Pull T-Handle.
3. Turn T-Handle to lock platform in released position.
4. Push platform in.
5. Turn T-Handle.
6. Push T-Handle in.
7. Grasp outer barrier and attempt to move
platform in and out until the platform
locks (feel release mechanism engage).
OPEN
PLATFORM
OUTER BARRIER
VALVE
N
E
P
O
CLOSE
Actuator
VALVE
N
E
P
O
W
A
RNING
Do not remove!
C
L
O
S
E
Hairpin
Cotter
Detent
Pin
C
L
O
S
E
W
ARN
I
N
G
Do not remove!
Page 7
Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
Maintenance and Lubrication
Proper maintenance is necessary to ensure safe, trouble-
free operation. Inspecting the lift for any wear, damage
or other abnormal conditions should be a part of all transit
agencies’s daily service program. Simple inspections can
detect potential problems.
The maintenance and lubrication procedures specified in
the following schedule must be performed by a Braun authorized service representative at the scheduled intervals
according to the number of cycles. NHTSA NUVL Series
lifts are equipped with a cycle counter (digital display built
into the electronic control board).
NUVL Series lifts are equipped with hardened pins and
self-lubricating bushings to decrease wear, provide smooth
operation and extend the service life of the lift.
When servicing the lift at the recommended intervals,
inspection and lubrication procedures specified in the previous sections should be repeated. Clean the components
and the surrounding area before applying lubricants.
LPS2 General Purpose Penetrating Oil is recommended
where Light Oil is called out. Use of improper lubricants
can attract dirt or other contaminants which could result in
wear or damage to the components. Platform components
exposed to contaminants when lowered to the ground may
require extra attention.
Lift components requiring grease are lubricated during assembly procedures. When replacing these components,
be sure to apply grease during installation procedures.
Specified lubricants are available from The Braun Corporation (part numbers below).
All listed inspection, lubrication and maintenance procedures should be repeated at “750 cycle” intervals following
Drive Chain and Rollers
LO
Drive
Chain
Adjustment
Access
Hole
Lubrication Diagram
Drive Chain
Release Latch
Torque
Tube
Pivot
Points
LO
Inner Roll Stop
Pivot Points
Linkage
LO
Inner Roll
Stop Catch
the scheduled “4500 Cycles” maintenance. These
intervals are a general
guideline for scheduling
maintenance procedures
and will vary according to
lift use and conditions. Lifts
exposed to severe conditions (weather, environment, contamination, heavy
usage, etc.) may require
inspection and maintenance
procedures to be performed
more often than specified.
Maintenance Indicator:
The Lift Ready green LED
mounted on top of the
pump cover will change color to yellow after every 750 cycles.
The yellow LED will not affect the functions of the lift, but is a
reminder to complete necessary maintenance and lubrication.
Once the lift has been serviced, press the CYCLE button
(located below LCD display on the control board) until the Lift
Ready LED changes back to green. The CYCLE button also
clears the lift cycle count (since last service) but not the lifetime
cycle count.
Discontinue lift use immediately if maintenance and lubrication procedures are not properly performed, or if there is any
sign of wear, damage or improper operation. Contact your
sales representative or call The Braun Corporation at 1-800-
®
THE LIFT
. One of our national Product Support representa-
tives will direct you to an authorized service technician who will
inspect your lift.
Hydraulic
SG
LO
Pivot Points
Cylinder
Pivot
Points
LO
Lifting Arm
LO
Eccentric
Shaft
Rollers
(bearings)
LO
Inner Roll
Stop Hinge
Pivot Points
Torque
Tube
Pivot
Points
LO
LO
A
RNING
W
Maintenance and lubrication procedures
must be performed
as specified by an
authorized service
technician.
Failure to do so may
result in serious
bodily injury and/or
property damage.
Lifting Arm
Pivot Points
LO
Horizontial
Carriage Arm
Slot Area
Rolling
DE
Outer Barrier
Detent Pin
Outer Barrier and Lower
Closure Pivot Points
LO
See the Maintenance/Lubrication Schedule for recommended applications per number of cycles.
Speci�ed (recommended) Available Braun
Lubricant Type Lubricant Amount Part No.
LO - Light Oil
DE - Door-Ease
SG - Synthetic Grease
750
Cycles
LO
Light Penetrating Oil LPS2, General Purpose 11 oz.
(30 weight or equivalent) Penetrating Oil Aerosol Can
Stainless Stick Door-Ease 1.68 oz.
Style (tube) Stick (tube)
Synthetic Grease Mobiltemp SHC32 12.5 oz.
Outer barrier and lower closure pivot points (2)
Outer barrier detent pin pivot points (2)
Inner roll stop hinge pivot points
Inner roll stop linkage pivot points
Lifting arm center and platform pivot points (bearings at all points)
Inspect outer barrier and lower closure for proper
operation
Inspect outer barrier seal and lower closure gasket
Inspect outer barrier detent pin hairpin cotter
Inspect lift for wear, damage or any abnormal
condition
Inspect lift for rattles
Check drive chain tension.
Inspect inner roll stop (bridge plate) and linkage for:
• Proper operation. Roll stop should rest solidly on
�oor providing smooth transition.
• Positive securement
• Wear or damage
Check carriage ride height in housing
Check stow height/lifting arm alignment
Inspect wiring harnesses for securement, wear or
other damage
Check lower pan securement
Torque tube pivot bearings (4 places)
15807
15806
ebuT )esoprupitluM(
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Correct or replace damaged parts.
Resecure, replace or correct as needed
Ensure hairrpin cotter is present and can be
removed and inserted easily. Resecure, replace
or correct as needed.
Correct as needed.
Correct as needed.
Pull out and lock manual release cable. Adjust
chain tension as needed. See Drive Chain Adjustment.
Resecure, replace or correct as needed. See
Inner Roll Stop Adjustment Instructions.
Adjust as needed. See Carriage Ride Height
Adjustment.
Lifting arms should be horizontal, aligned with
each other and aligned with carriage. Adjust as
needed. See Switch Adjustment (Below Stow
Switch). See service manual.
Resecure, replace or correct as needed
Resecure, replace damaged parts or correct as
needed.
Apply Light Oil - See Lubrication Diagram
28598
Page 8
Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
Maintenance and Lubrication
Hydraulic Fluid (Pump) - Check level. Note: Fluid
should be changed if there is visible contamination. Inspect the hydraulic system (cylinder, hoses,
�ttings, seals, etc.) for leaks if �uid level is low.
Inspect lifting arm bushings and pivot pins for visible wear or damage
Inspect outer barrier pivot pin mounting bolts (2)
Mounting
Decals and Antiskid
Use 5606 aviation �uid only (part 87010R-MILL).
Check �uid level with platform lowered fully.
Fill to within 1-1/2" of the bottom of the �ll tube
(neck).
Replace if needed.
Tighten or replace if needed
Check to see that the lift is securely anchored to
the vehicle and there are no loose bolts, broken
welds, or stress fractures.
Replace decals if worn, missing or illegible.
Replace antiskid if worn or missing.
Repeat all previously listed inspection, lubrication and maintenance procedures at 750 cycle
intervals.
Consecutive
750 Cycle
Intervals
1500
Cycles
4500
Cycles
Apply Light Oil - See Lubrication Diagram
Apply Door Ease - See Lubrication Diagram. Apply to the surface area around both slots and wipe
off excess
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Synthetic Grease - See Lubrication Diagram
Use compressor and nozzle to remove all debris
from housing. Clean lower pan slot and apply
Antisieze to slot before reinstalling pan.
Use clean cloth and solvent to clean tracks. Clean
lower pan slot and apply Antisieze to slot before
reinstalling pan.
Correct or replace damaged parts and/or relubricate. See Drive Chain Adjustment.
Correct or replace damaged parts and/or relubricate.
Ensure T-handle release and cable assembly
operate properly (see Manual Operation). Ensure
carriage can be manually extended and retracted
freely.
Resecure, replace or adjust as needed. See
Switch Adjustment in service manual.
Correct, replace damaged parts and/or relubricate.
Resecure, replace or correct as needed.
Resecure, replace damaged parts, lubricate or
correct as needed.
Resecure, replace damaged parts, lubricate or
correct as needed. See Carriage Ride Height
Adjustment.
Resecure, replace or correct as needed.
Resecure, replace or correct as needed.
Tighten, repair or replace if needed.
Resecure, repair or replace if needed.
Resecure, replace or correct as needed.
Resecure, replace or correct as needed.
Carriage and eccentric shaft rollers (bearings)
Lifting arm slots in rolling horizontial carriage arm
tubes
Hydraulic cylinder pivot points (4 per cylinder)
Drive chain and chain rollers
Drive chain release latch mechanism
Deploy lift, remove lower pan and blow out housing. Blow off platform also.
Deploy lift, remove lower pan and clean housing
tracks
Check drive chain tensioner, jam nuts and connecting link for securement and/or misalignment.
Inspect drive chain release latch mechanism for
proper operation, positive securement, wear or
other damage
Inspect platform cable-activated manual release
system (T-handle/cable assembly and carriage
movement)
Inspect limit switches for securement and proper
adjustment
Inspect carriage, lifting arm and eccentric shaft
roller bearings for wear or damage, positive
securement and proper operation
Inspect external snap rings (e-clips):
• Carriage roller bearings (4)
• Lower lifting arm pins (4)
• Eccentric shaft track roller bearing (2)
Inspect lower lifting arm pins for wear or damage,
positive securement and proper adjustment
Inspect eccentric shaft pins, bearing mounting
screw, washers and securement hardware for
wear or damage, positive securement and proper
operation
Inspect torque tube cams for securement, wear or
damage
Inspect housing cam brackets for securement,
wear or damage
Inspect cylinder(s), hoses, �ttings and hydraulic
connections for wear, damage or leaks
Inspect power cable
Inspect handrails for securement
Inspect handrail belts operation, securement wear
or damage.
Adjustments and Diagnostics
T
S
L
V
1
W
S
V104
102
102
D7 D8
D5 D6 D3 D4
D
2
R31
cycle
C6
C
T
S
L
V
1
W
S
LCD Display Moving Out
Of Cassette
Full Out Moving
Up
At Floor
Level
Moving Down Ground Level
Ground Level
OB Out
STLV SW 1 1
STOW SW 1
FOUT SW 1 1 1 1 1 1
FLV SW 1
OBAR SW 1 1 1 1 1 1 1
SBELT SW = 1 When Seat Belt is Plugged In.
MAT SW = 1 When Mat is Activated
IBAR SW = 1 When IN Barrier is activated
DO SW = 1 When Door is Full Open. Or pin 3 and pin 4 are jumpered.
LO VOLT
Stowed
Drive Chain Adjustment
In event the drive chain sags 1/2" or more, adjust tension
as detailed.
Tighten to eliminate visible sag but do not overtighten.
1. Remove bottom pan.
2. Pull the manual release cable and lock.
3. Remove adjustment bolt (tensioner) access cover.
4. Loosen inside jam nut. Secure tensioner and tighten
outside jam nut. Tighten to eliminate visible chain sag but
do not overtighten.
5. Lock jam nuts together making sure the tensioner roller is
horizontial. Release and push the manual cable in fully.
Ensure platform is locked by moving the platform in and
out until chain release assembly engages chain.
Carriage Ride Height Adjustment
The carriage horizontal arms move (roll) in and out of the
housing tracks on roller bearings. Following installation or
extensive lift operation, clearance between horizontal arms
and tracks may diminish. The eccentric shaft mounting
plate allows height adjustment.
Remove eccentric plate mounting screw. Using screwdriver or small rod, rotate the shaft clockwise to increase
carriage height. Rotate the shaft counterclockwise to decrease carriage height. Reinstall mounting screw in nearest retainer hole. Adjust left and right side eccentric shafts
(screw positions may vary from side to side). Adjust height
such that horizontal arms do not contact top or bottom of
tracks (align center). For Calibration procedures and Floor
Level Adjustment, see Panel 4 on reverse side.
Diagnostics: Following installation, verify all lift functions and
ensure that the control board
correctly registers the values
listed below when the corresponding action is taken. “1” will
appear on the LCD screen as
shown in the Illustration at right.
If any other value appears on
the LCD screen during the
speci�c diagnostic procedure,
verify that the correct harness is
properly connected to both the
control board and the associated lift harness. Repeat the
harness diagnostic procedure. If an
incorrect value is still present after
checking the harness and connections, contact The Braun Corporation Product Support Department at
1-800-THE-LIFT
®
.
All basic functions (UP, DOWN,
DOOR and STOW) should show
a value of 1 when activated via a
controlled input (Hand-held Pendant, Magnetic, Remote Entry or
3rd Station Controls). Refer to the
service manual for additional switch
and sensor information.
Pump Module
Control Board
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