Adjustments and Calibration, Adjustment Procedures

Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 32553 Rev. A

Maintenance and Lubrication

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.

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 Synthetic rease - See Lubrication Diagram

Use compressor and nozzle to remove all debris from housing. Clean outboard lower pan slot and

4500

Cycles

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 and ntiskid

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.

Deploy lift, remove inboard and outboard lower pans and clean housing tracks

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.

Consecutive	Repeat all previously listed inspection, lubrica-
750 Cycle	tion and maintenance procedures at 750 cycle
Intervals	intervals.

Adjustments and Calibration

1500

Cycles

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

Correct or replace damaged parts and/or relubri- cate. See Drive Chain Adjustment.

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 Switch Adjustment.

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.

Tighten, repair or replace if needed.

Resecure, repair or replace if needed.

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. hi le 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.hi le 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. hi le 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).

Braun FMVSS NO. 403 Adjustments and Calibration, Adjustment Procedures, Calibration Procedures

Models: Braun Corporation FMVSS No. 403