Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
Braun Corporation FMVSS No. 403
Quick Reference Installation Sheet 33675
Locate Lift Mounting Brackets
1
Rev: A
Figure C
Locate All-Thread Mounting
Brackets
“DOT — Public Use Lift”
CENTER
NHTSA Vehicle Physical Requirements
VEHICLE FRAME
ACROSS
CENTER IN
1. Open both doors to 90°.
“DOT - Public Use Lift” verifies this platform lift
Vehicle Requirements:
DOOR OPNING
2. Locate center of door opening
(between doors). Mark the
center point.
C
L
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).
All vehicles with a GVW over 6000 lbs.
and with unmodified OEM framerails.
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.
90
Alternative floor structures are allowed
providing the installed lift system pass-
es all FMVSS 403 requirements.
DOOR
OPENING
20-1/4"
Mounting Bracket Requirements:
20-1/4"
40-1/2"
A maximum distance of 16" from the
outermost mounting bracket to the
end of the cassette.
All-Thread
Mounting
Brackets
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
mounting studs.
VEHICLE
All four mounting brackets must be
connected to the framerails.
CHASSIS
MEMBER All-thread
Mounting
Brackets
5. Clamp the mounting brackets
securely in place (all-thread
studs must be vertical).
VEHICLE
CHASSIS MEMBER
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.
Figure A
16
”
Maximum
B
Door Opening Dimensions
A
W
ARNING
Vehicle lift access door opening
must meet specified dimensions.
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.
604
Minimum Clear Door
Opening Height
A
NA
C
B
C
40-1/2"
34"
Clear Door Opening Width
Maximum Floor-to-Ground
Figure B
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Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
Electrical, Hydraulic and Interlock
3
Min.
1-3/4”
Calibration and Floor
Level Adjustment
5/16"
Pump Module Mounting
Hydraulics:
Circuit Sentry:
Lag Bolts
(typical - 4)
Figure K
to
all
Lead
Cable
W
Pos.
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.
Mount
Pump
ertical
Remove the plug
from 1/4" diameter
clear vent tube.
See Figure N.
Following electrical,
hyrdaulic and interlock
installation, check
calibration and floor level
adjustments as defined
in Panel 4.
Neg.
Pump
Power Cable
V
Mounting
Bracket
Through-Floor
Cable and Hose
Grommet
Circuit
Sentry
1/4-20 x 3/8"
Hex Screws
Bat.
Pump
Route hydraulic
hose assembly
through floor
grommet to quick-
disconnect fitting at
lift. Connect hose.
Install Circuit
(3" Diameter
Mounting Hole)
must
face
Out
Check under vehicle for
obstructions before drilling,
cutting holes or installing
�oor mounting hardware.
12"
Max.
Sentry as shown
in Figure M. At-
tach power cable
and lead cable as
detailed.
Aux.
Lock
Washer
Figure M
1/8" x 4" x 4"
Plastic
Note: Locate and drill pump
module mounting holes, floor
grommet 3" diameter hole and
manual release 7/8" diameter
hole before mounting pump.
Note:
Connect red positive
(+) power cable here
(from Circuit Sentry).
Optional Interlock Kits
Vehicle and Lift Interlocks
Remove
plug from
vent tube.
Figure N
Reinforcement
“L” Bracket
Optional interlock kits are
available. Contact The
Braun Corporation for ap-
propriate applications.
The pump module is equipped
with a lift interface 9-circuit
connector (female socket).
A mating 9-circuit connector
(male plug) is supplied.
Cable-activated Manual
Note: Seal the
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.
1
Cable-activated
Manual Release
(from lift)
7/8" Diameter
Mounting Hole
floor cable and
hose grommet
following installa-
tion procedures
(fill with silicone).
Disconnect
and remove
eye terminal
To meet minimum
o Lift
T
NHTSA requirements,
connect to vehicle inter-
lock harness as outlined
in Figure N (Steps 1-4).
Note: All
wiring harness
connections
must be
Pump Ground Cable:
Vehicle Battery Ground Cable:
2
Disconnect
inside the
vehicle.
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).
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.
iring
W
Main Lift
Harnesses
4
Connect
5/16"
Strobe Alarm
External Tooth
Star Washer
Threshold Mat
Ground Cable Corrosion:
When mounting ground
cables, remove undercoat-
ing, dirt, rust, etc. from
framing member around
mounting holes. Apply
Platform Lights
(wires labeled)
9/32"
Diameter
T
o Interlock
Pilot Hole
Chassis
LIFT S
Housing/Carriage Har-
nesses:
Beeper/Strobe Alarm
and Platform Lights:
Threshold Warning Sensor:
Thread
Cutting
Screw
(
Y
3
SIGNAT
ellow/Light Blue)
OWED
Connect vehicle
interlock signal wires
Connect harness to mating har-
ness 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.
L
VEHICLE SECURE
Route two main wiring
harnesses from lift through
�oor grommet to pump
module. Connect to mat-
ing harnesses at pump.
Connect harnesses to
mating harnesses at
pump (labeled). Detailed
installation instructions
supplied with kits.
protective coating to mount-
ing holes to prevent corro-
sion. Failure to do so will
void warranty of certain
electrical components.
SIGNA
(Grey/Red)
L
Figure L
Ground Cable Mounting
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Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
Calibration and Floor Level Adjustment
4
FMVSS 403/404 Certification Checklist
5
Visual and Audible
NUVL Control Board 31414A-NS
Threshold Warning
DOT — Public Use Lift
U16
Platform Sense Calibration
1. There must be no weight on platform.
102
1 0 3
1 0 3
103
103
Public use vehicle manufacturers
are responsible for complying with
the lift lighting requirements in Fed-
eral Motor Vehicle Safety Standard
No. 404, Platform Lift Installation in
Motor Vehicles (49 CFR 571.404).
LCD MODULE
2. Press hand-held pendant UP switch to raise platform a minimum
3" above stow level.
U15
cycle
R31
102
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.
1 0 2
R29
103
U3
R27
R26
1 0 3
diag
U12 C14
D23
D24
D25
5
U
1 0 2
Platform
Lighting
U2
R28
103
103
1 0 3
102
D26
R33
1 0 3
1 1
R
C 8
Magnetic
103
103
1 0 3
1 0 3
U 2 1
1 0 3
1 0 3
U22
D11 D10
103
9 1
U
Threshold
Area
Ground Sense Calibration
1. Press hand-held pendant DOWN switch to lower platform fully to
R25
102
ground level.
R43
R41
1802
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.
VR1
VR2
Threshold
Sensor Mat
Inner
Roll Stop
R40
Outer Barrier Occupied Calibration
V104
1. Press hand-held pendant DOWN switch to lower platform fully to
ground level.
103
103
2. Once outer barrier is fully unfolded (ramp position), release the
pendant DOWN switch.
V104
1 0 3
1 0 3
1 0 3
1 0 3
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.
U22
103
4. After calibration, the LCD screen should read “OUT-BAR OCCU-
PIED” whenever there is weight present on the outer barrier.
Platform
O_BAR GROUND
LVL Button
50# CAL
Button
Dual
Outer Barrier
The operations listed below must be
functionally veri�ed.
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).
Floor Level Switch
Floor Level Cam
Vehicle movement is prevented unless the lift
door is closed, ensuring the lift is stowed.
Verify platform lighting when lift is deployed
and pendant illumination when lift is powered.
Lift operation shall be prevented unless the
vehicle is stopped and vehicle movement is
prevented.
A visual and audible warning will activate if
the threshold area is occupied when the plat-
form is at least one inch below �oor level.
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 platform will not fold/stow if occupied.
The inner roll stop will not raise if occupied.
The outer barrier will not raise if occupied
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).
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).
Torque Tube
Cam depressing switch.
33675 Rev. A
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Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
Lift Operating Instructions
Lift Operating Instructions
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.
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.
W
ARNING
OPEN DOOR(S) AND SECURE
TO LOAD PASSENGER:
Whenever a
passenger is on the
platform, the:
• Handrail belt must
be latched
• Passenger must
be positioned
1. Read Notes below! Load passen-
ger onto platform, lock wheelchair
brakes and fasten handrail belt.
Manually open door(s) fully and
secure.
Note: Outer barrier must be fully
unfolded (ramp position) until the
entire wheelchair (or standee) has
crossed the outer barrier.
TO DEPLOY PLATFORM:
It is the responsibility of the lift
operator (attendant) to prop-
erly open, secure and close the
vehicle lift doors, to activate any
auxiliary interlock (if equipped),
to load and unload the wheel-
chair passenger (or standee) on
and off the lift platform, and to
properly activate all lift functions.
fully inside yellow
boundaries
1. Stand clear and press the UP
switch until the platform stops (ex-
tends fully). Release switch.
• 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.
Note: Passenger must be
positioned fully inside yellow
boundaries.
2. Fasten handrail belt.
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. Re-
lease switch.
3. Press the UP switch until the plat-
form stops (raises to floor level)
and inner roll stop unfolds to floor
level. Release switch.
In event of power or equipment
failure, refer to the Manual Oper-
ating Instructions section.
3. Unlock wheelchair brakes and
unload passenger from platform.
Hand-held Pendant Control:
DOOR
DOWN
STOW
TO UNLOAD PASSENGER:
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.
1. Fasten handrail belt.
TO STOW PLATFORM:
UP
2. Read Note below! Load pas-
senger onto platform and lock
wheelchair brakes.
1. Fasten handrail belt.
When there is power to the lift, the lift function labels
illuminate to identify the functions.
2. Press STOW switch until platform
stops at stow level. Release
switch.
Note: Passenger must be
positioned fully inside yellow
boundaries and outer barrier must
be UP.
Control Switch Functions:
3. Unfasten handrail belt.
Hand-held Pendant Control
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.
3. Press DOWN switch until the entire
platform reaches ground level and
the outer barrier unfolds fully
4. Press STOW switch until platform
stops (retracts fully). Release
switch.
(ramp position). Release switch.
to retract and then stops (restraint belt must be
latched). The restraint belt must then be unfas-
tened before the platform will stow (retract) fully.
With the belt unlatched, pressing the STOW switch
then retracts the platform to the fully stowed posi-
tion. Note: The lift will not stow with weight on the
platform (built-in safety feature).
4. Unfasten handrail belt, unlock
wheelchair brakes and unload pas-
senger from platform.
CLOSE DOOR(S)
From ground level, the UP function will first au-
tomatically 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).
Manually close door(s) fully.
Note: Outer barrier must be fully
unfolded (ramp position) until the
entire wheelchair (or standee) has
crossed the outer barrier.
DOOR CLOSE: This function is not applicable
for “Public-Use” NUVL Lift Models (manual door
system and attendant operated lift).
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.
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.
STOW: When the STOW switch is pressed, the
platform first raises or lowers to stow level, starts
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Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
Manual Operating Instructions
Manual Operating Instructions
In event of power or equipment
failure, refer to the Manual
Operating Instructions to manu-
ally 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!
T-handle release cable re-
leases and engages the lift
platform to allow the platform
to be manually extended and
retracted. The manual back-
up pump (hand pump) is
Hand
Pump
OUT (TO EXTEND PLATFORM):
Pump
Handle
1. Pull T-Handle.
2. Turn T-Handle to lock platform in re-
leased position.
3. Pull platform out.
4. Turn T-Handle.
T-Handle
Release
Cable
W
A
R
N
I
N
G
POWER
PACK
used to manually lower and
raise the extended platform.
D
o
n
o
t
r
e
m
o
v
e
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).
The location of the power
pack and release cable var-
ies from vehicle to vehicle
(depending on your particular
installation).
Valve
VALVE
Familiarize yourself with the
components necessary to
manually operate the lift. The
Note: Location of power
pack and T-handle varies.
DOWN (TO LOWER PLATFORM):
Using hand pump handle, open hand pump
valve (turn counterclockwise). Open 1/2
turn only.
OPEN
CLOSE
Cable-Activated Platform Manual Release System
DOWN (TO UNFOLD OUTER BARRIER):
Hairpin
Cotter
Platform Manual Release Sys-
Failure to manually lock the plat-
form carriage assembly (re-en-
gage 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 hous-
ing unhindered during hand pump
raising and lowering procedures.
1. Remove hairpin cotter from detent pin.
2. Remove detent pin.
3. Unfold (rotate) barrier down.
tem: 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 need-
ed. A T-handle is provided on the
release cable for activation of the
manual release system (details
follow).
Actuator
W
ARNING
Detent
Pin
TFORM
UP (TO FOLD OUTER BARRIER):
A
PL
1. Fold (rotate) barrier up.
2. Insert detent pin.
3. Insert hairpin cotter in detent pin.
OUTER BARRIER
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.
VALVE
After manually releasing
UP (TO RAISE PLATFORM):
After manually moving the
platform, push manual release
T-handle in fully and ensure
platform is locked before driv-
ing lift vehicle. Uncontrolled
and unintentional platform de-
ployment (inadvertent platform
ejection) may result in serious
bodily injury and/or property
damage.
platform in or out, it is extremely
important that the cable-acti-
vated manual release is positively
re-engaged to secure (lock) the
platform carriage assembly before
loading a passenger on the plat-
form 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.
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):
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.
Note: The lift platform must be
pushed back into its carriage
compartment all the way before
reverting back to normal (pow-
ered) operation. When the lift is
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 re-
leased position.
W
A
R
N
4. Push platform in.
I
N
G
5. Turn T-Handle.
6. Push T-Handle in.
D
7. Grasp outer barrier and attempt to move
platform in and out until the platform
locks (feel release mechanism engage).
o
n
o
t
r
e
m
o
v
e
!
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Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
Maintenance and Lubrication
See the Maintenance/Lubrication Schedule for recommended applications per number of cycles.
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 scheduled “4500 Cy-
cles” maintenance. These
intervals are a general
Speci�ed (recommended)
Lubricant
LPS2, General Purpose
Available
Amount
11 oz.
Aerosol Can
1.68 oz.
Braun
Part No.
W
ARNING
Lubricant
Type
Light Penetrating Oil
guideline for scheduling
maintenance procedures
and will vary according to
lift use and conditions. Lifts
exposed to severe condi-
tions (weather, environ-
ment, contamination, heavy
usage, etc.) may require
inspection and maintenance
procedures to be performed
more often than specified.
LO - Light Oil
15807
15806
28598
Maintenance and lu-
brication 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.
(30 weight or equivalent)
Stainless Stick
Penetrating Oil
Door-Ease
DE - Door-Ease
The maintenance and lubrication procedures specified in
the following schedule must be performed by a Braun au-
thorized 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).
Style (tube)
Stick (tube)
Synthetic Grease
(Multipurpose)
Mobiltemp SHC32
12.5 oz.
Tube
SG - Synthetic Grease
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.
Outer barrier and lower closure pivot points (2)
Outer barrier detent pin pivot points (2)
Inner roll stop hinge pivot points
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
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.
When servicing the lift at the recommended intervals,
inspection and lubrication procedures specified in the pre-
vious 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.
Inner roll stop linkage pivot points
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.
Lifting arm center and platform pivot points (bear-
ings at all points)
Inspect outer barrier and lower closure for proper
operation
Correct or replace damaged parts.
Lift components requiring grease are lubricated during as-
sembly procedures. When replacing these components,
be sure to apply grease during installation procedures.
Specified lubricants are available from The Braun Corpora-
tion (part numbers below).
Discontinue lift use immediately if maintenance and lubrica-
tion 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.
Inspect outer barrier seal and lower closure gasket
Inspect outer barrier detent pin hairpin cotter
Resecure, replace or correct as needed
Ensure hairrpin cotter is present and can be
removed and inserted easily. Resecure, replace
or correct as needed.
All listed inspection, lubrication and maintenance proce-
dures should be repeated at “750 cycle” intervals following
Inspect lift for wear, damage or any abnormal
condition
Correct as needed.
Correct as needed.
750
Cycles
Inspect lift for rattles
Lubrication Diagram
Drive Chain and Rollers
Check drive chain tension.
Pull out and lock manual release cable. Adjust
chain tension as needed. See Drive Chain Adjust-
ment.
LO
Drive Chain
Release Latch
SG
Hydraulic
Cylinder
Pivot
Eccentric
Shaft
Resecure, replace or correct as needed. See
Inner Roll Stop Adjustment Instructions.
Inspect inner roll stop (bridge plate) and linkage for:
• Proper operation. Roll stop should rest solidly on
�oor providing smooth transition.
• Positive securement
Rollers
(bearings)
LO
Points
LO
• Wear or damage
Lifting Arm
Pivot Points
LO
Torque
Adjust as needed. See Carriage Ride Height
Adjustment.
Check carriage ride height in housing
Check stow height/lifting arm alignment
Tube
Pivot
Points
LO
Rolling
Horizontial
Carriage Arm
Slot Area
DE
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
Inspect wiring harnesses for securement, wear or
other damage
Torque
Tube
Pivot
Points
LO
Drive
Chain
Adjustment
Access
Hole
Resecure, replace damaged parts or correct as
needed.
Check lower pan securement
Inner Roll
Stop Catch
LO
Apply Light Oil - See Lubrication Diagram
Torque tube pivot bearings (4 places)
Outer Barrier
Detent Pin
LO
Inner Roll Stop
Linkage
Pivot Points
LO
Lifting Arm
Pivot Points
LO
Inner Roll
Stop Hinge
Pivot Points
LO
Outer Barrier and Lower
Closure Pivot Points
LO
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Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 33675 Rev. A
Maintenance and Lubrication
Carriage and eccentric shaft rollers (bearings)
Apply Light Oil - See Lubrication Diagram
Hydraulic Fluid (Pump) - Check level. Note: Fluid
should be changed if there is visible contamina-
tion. Inspect the hydraulic system (cylinder, hoses,
�ttings, seals, etc.) for leaks if �uid level is low.
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).
Lifting arm slots in rolling horizontial carriage arm
tubes
Apply Door Ease - See Lubrication Diagram. Ap-
ply to the surface area around both slots and wipe
off excess
Inspect lifting arm bushings and pivot pins for vis-
ible wear or damage
Replace if needed.
Hydraulic cylinder pivot points (4 per cylinder)
Drive chain and chain rollers
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Synthetic Grease - See Lubrication Diagram
4500
Cycles
Inspect outer barrier pivot pin mounting bolts (2)
Mounting
Tighten or replace if needed
Drive chain release latch mechanism
Check to see that the lift is securely anchored to
the vehicle and there are no loose bolts, broken
welds, or stress fractures.
Deploy lift, remove lower pan and blow out hous-
ing. Blow off platform also.
Use compressor and nozzle to remove all debris
from housing. Clean lower pan slot and apply
Antisieze to slot before reinstalling pan.
Decals and Antiskid
Replace decals if worn, missing or illegible.
Replace antiskid if worn or missing.
Deploy lift, remove lower pan and clean housing
tracks
Use clean cloth and solvent to clean tracks. Clean
lower pan slot and apply Antisieze to slot before
reinstalling pan.
Consecutive
750 Cycle
Intervals
Repeat all previously listed inspection, lubrica-
tion and maintenance procedures at 750 cycle
intervals.
Check drive chain tensioner, jam nuts and connect-
ing link for securement and/or misalignment.
Correct or replace damaged parts and/or relubri-
cate. See Drive Chain Adjustment.
Adjustments and Diagnostics
Correct or replace damaged parts and/or relubri-
cate.
Inspect drive chain release latch mechanism for
proper operation, positive securement, wear or
other damage
Carriage Ride Height Adjustment
Drive Chain 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.
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.
1500
Cycles
Ensure T-handle release and cable assembly
operate properly (see Manual Operation). Ensure
carriage can be manually extended and retracted
freely.
Inspect platform cable-activated manual release
system (T-handle/cable assembly and carriage
movement)
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.
Remove eccentric plate mounting screw. Using screw-
driver or small rod, rotate the shaft clockwise to increase
carriage height. Rotate the shaft counterclockwise to de-
crease carriage height. Reinstall mounting screw in near-
est 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.
Resecure, replace or adjust as needed. See
Switch Adjustment in service manual.
Inspect limit switches for securement and proper
adjustment
Correct, replace damaged parts and/or relubricate.
Inspect carriage, lifting arm and eccentric shaft
roller bearings for wear or damage, positive
securement and proper operation
Resecure, replace or correct as needed.
Inspect external snap rings (e-clips):
• Carriage roller bearings (4)
• Lower lifting arm pins (4)
harness diagnostic procedure. If an
incorrect value is still present after
checking the harness and connec-
tions, contact The Braun Corpora-
tion Product Support Department at
1-800-THE-LIFT®.
Diagnostics: Following instal-
lation, verify all lift functions and
ensure that the control board
correctly registers the values
listed below when the corre-
sponding 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 associ-
ated lift harness. Repeat the
• Eccentric shaft track roller bearing (2)
STLV SW
1
Resecure, replace damaged parts, lubricate or
correct as needed.
Inspect lower lifting arm pins for wear or damage,
positive securement and proper adjustment
cycle
R31
102
STLV SW
1
Resecure, replace damaged parts, lubricate or
correct as needed. See Carriage Ride Height
Adjustment.
Inspect eccentric shaft pins, bearing mounting
screw, washers and securement hardware for
wear or damage, positive securement and proper
operation
All basic functions (UP, DOWN,
DOOR and STOW) should show
a value of 1 when activated via a
controlled input (Hand-held Pen-
dant, Magnetic, Remote Entry or
3rd Station Controls). Refer to the
service manual for additional switch
and sensor information.
Resecure, replace or correct as needed.
Resecure, replace or correct as needed.
Tighten, repair or replace if needed.
Inspect torque tube cams for securement, wear or
damage
Pump Module
Control Board
Inspect housing cam brackets for securement,
wear or damage
Inspect cylinder(s), hoses, �ttings and hydraulic
connections for wear, damage or leaks
Stowed
1
LCD Display
Moving Out Full Out Moving
Ground Level
OB Out
At Floor Moving Down Ground Level
Level
Of Cassette
Up
Resecure, repair or replace if needed.
Resecure, replace or correct as needed.
Resecure, replace or correct as needed.
Inspect power cable
STLV SW
STOW SW
FOUT SW
FLV SW
1
1
Inspect handrails for securement
1
1
1
1
1
1
1
1
1
1
1
Inspect handrail belts operation, securement wear
or damage.
OBAR SW
SBELT SW
MAT SW
1
1
1
= 1 When Seat Belt is Plugged In.
= 1 When Mat is Activated
IBAR SW
DO SW
= 1 When IN Barrier is activated
= 1 When Door is Full Open. Or pin 3 and pin 4 are jumpered.
LO VOLT
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