Braun Corporation FMVSS No. 403 Quick Reference Installation Sheet 34274 Rev. A
Maintenance and Lubrication
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
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 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 outboard lower pan slot and
4500
Cycles
Inspect lifting arm bushings and pivot pins for vis- ible wear or damage
Inspect outer barrier pivot pin mounting bolts (2)
Mounting
Decals and Antiskid
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.
Deploy lift, remove inboard and outboard lower pans and clean housing tracks
Check drive chain tensioner, jam nuts and connect-
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 relubri-
Consecutive | Repeat all previously listed inspection, lubrica- |
750 Cycle | tion and maintenance procedures at 750 cycle |
Intervals | intervals. |
Adjustments and Diagnostics
1500
Cycles
ing link for securement and/or misalignment.
Inspect drive chain release latch mechanism for proper operation, positive securement, wear or other damage
Inspect platform
Inspect limit switches for securement and proper adjustment
Inspect carriage, lifting arm and eccentric shaft rollers (bearings) for wear or damage, positive
cate. See Drive Chain Adjustment.
Correct or replace damaged parts and/or relubri- cate.
Ensure
Resecure, replace or adjust as needed. See Switch Adjustment.
Correct, replace damaged parts and/or relubricate.
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 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.
securement and proper operation
Inspect external snap rings
•Carriage roller bearings (4)
•Lower lifting arm pins (5)
•Upper lifting arm pins (2)
•Outer race bearings (2)
•Inner roll stop shaft (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
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.
V104 | STLV | SW |
C6 |
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cycle | R31 102 C | 102 102 |
STLV SW | 1 |
1 | D7 |
D8 | |
D5 D6 | |
| D3 |
| D4 |
| D2 |
Pump Module Control Board
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 specic diagnostic procedure, verify that the correct har- ness 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
All basic functions (UP, DOWN, DOOR and STOW) should show a value of 1 when activated via a controlled input
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
Resecure, replace or correct as needed.
Resecure, replace or correct as needed.
Tighten, repair or replace if needed.
Resecure, repair or replace if needed.
LCD Display | Stowed | Moving Out | Full Out | Moving | At Floor | Moving Down | Ground Level | Ground Level |
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STLV SW |
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| 1 | 1 |
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STOW SW | 1 |
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FOUT SW |
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| 1 | 1 | 1 | 1 | 1 | 1 |
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FLV SW |
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| 1 |
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OBAR SW | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
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SBELT SW |
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| = 1 When Seat Belt is Plugged In. |
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MAT SW |
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| = 1 When Mat is Activated |
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IBAR SW |
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| = 1 When IN Barrier is activated |
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DO SW |
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| = 1 When Door is Full Open. Or pin 3 and pin 4 are jumpered. | ||||
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LO VOLT |
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