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Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 32553 Rev. A
Hydraulic Fluid (Pump) - Check level. Note: Fluid
should be changed if there is visible contamina-
tion. Inspect the hydraulic system (cylinder, hoses,
fittings, seals, etc.) for leaks if fluid level is low.
Inspect lifting arm bushings and pivot pins for vis-
ible wear or damage
Inspect outer barrier pivot pin mounting bolts (2)
Mounting
ecals andntiskid
Use 5606 aviation fluid only (part 87010R-MILL).
Check fluid level with platform lowered fully.
Fill to within 1-1/2" of the bottom of the fill tube
(neck).
Replace if needed.
ighten 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, lubrica-
tion 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. Ap-
ply to the surface area around both slots and wipe
off ecess
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Synthetic rease - See Lubrication Diagram
Use compressor and nozzle to remove all debris
from housing. Clean outboard lower pan slot and
applyAntisieze to slot before reinstalling pan.
Use clean cloth and solvent to clean tracks. Clean
lower pan slot and applyAntisieze to slot before
reinstalling pan.
Correct or replace damaged parts and/or relubri-
cate. See Drive ChainAdjustment.
Correct or replace damaged parts and/or relubri-
cate.
Ensure T-handle release and cable assembly
operate properly (see Manual Operation). Ensure
carriage can be manually etended and retracted
freely.
Resecure, replace or adjust as needed. See
SwitchAdjustment.
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.
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 inboard and outboard lower
pans and blow out housing. Blow off platform also.
Deploy lift, remove inboard and outboard lower
pans and clean housing tracks
Check drive chain tensioner, jam nuts and connect-
ing 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
rollers (bearings) for wear or damage, positive
securement and proper operation
Inspect eternal snap rings (e-clips)
• Carriage roller bearings (4)
• Lower lifting arm pins (5)
• Eccentric shaft track roller bearing (1)
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, fittings and hydraulic
connections for wear, damage or leaks
Inspect power cable
Maintenance and Lubrication
Adjustments and Calibration
Adjustment Procedures
Lift Out Switch: The Lift Out Switch stops inward travel of
the carriage/platform during Stow function (activated by the
housing-mounted Lift Out Cam). Move cam in to increase
inward travel. Move cam out to decrease inward travel. LED
D25 will be illuminated when the switch is not contacting the
cam.
Full Out Switch: The Full Out Switch stops outward travel of
the carriage/platform during Deploy (Up/Down) functions (ac-
tivated by the housing-mounted Full Out Cam). Move cam
in to decrease outward travel. Move cam out to increase
outward travel. Carriage rollers must be inside housing a
minimum 1/2". The platform will not raise or lower until this
switch is activated. LED D26 will be illuminated when the
switch is contacting the cam.
Floor Level Switch: LED D28 will be illuminated when the
switch is contacting the cam. Detailed on reverse side.
Below Stow Switch: The Below Stow Switch controls the
height of the carriage/platform before it moves inward during
the Stow function (activated by the torque tube-mounted
Below Stow Cam). Rotate the cam in to decrease platform
height. Rotate the cam out to increase platform height.
Adjust cam so lifting arms are aligned. iew the platform
position in the housing. LED D24 will be illuminated at stow
level and below.
Barrier Down Switch: This platform-mounted switch pro-
hibits the platform from raising unless the outer barrier is in
the full up position. The Up function is prohibited if the outer
barrier detent pin is not fully engaged also. LED D2 will be
illuminated when the switch is not contacting the outer barrier
detent pin.
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.
. 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.
Calibration Procedures
Platform Sense Calibration
1. There must be no weight on platform.
2. Press hand-held pendant UP switch to raise platform a
minimum " above stow level.
. Remove pump cover and press and hold control board
mounted CAL. 50 lb. button. hile pressing the CAL. 50
lb. button, press and hold the hand-held pendant STO
switch (button). The platform will lower to stow level (begin
stow function), and then start to raise. Release CAL. 50 lb.
button immediately when platform starts to raise from stow
level.
4. LED D18 will be illuminated when weight on plat
form prevents stowing.
Ground Sense Calibration
1. Press hand-held pendant DO switch to lower platform
fully to ground level.
2. hile continuing to press the pendant DO switch, press
and then release control board mounted CALIB. D
SE/OB button.
. Release the pendant DO switch.
4. LED D2 will be illuminated when platform is at ground
level.
Outer Barrier Occupied Calibration
1. Press hand-held pendant DO switch to lower platform
fully to ground level.
2. Once outer barrier is fully unfolded (ramp position), release
the pendant DO switch.
. Press and hold the control board mounted CALIB. D
SE/OB button. hile holding CALIB. D SE/OB button,
press hand-held pendant UP switch to raise the outer bar-
rier. Be sure to release CALIB. D SE/OB button when
outer barrier reaches approimately half full up (vertical)
position.
Carriage Ride Height Adjustment
The carriage horizontal arms move (roll) in and out of the
housing tracks on roller bearings. Following installation or
etensive 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).