Braun 403 dimensions Adjustments and Diagnostics

Page 8

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 87010R-MILL). Check ￿uid level with platform lowered fully. Fill to within 1-1/2" of the bottom of the ￿ll tube (neck).

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 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

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 extended and retracted freely.

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 (e-clips):

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

 

 

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 speci￿c 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 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, Re- mote Entry or 3rd Station Controls). Refer to the service manual for addi- tional switch and sensor information.

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

 

 

Of Cassette

 

Up

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Image 8
Contents Door Locate Lift Mounting BracketsDOT Public Use Lift Nhtsa Vehicle Physical Requirements Lift Housing Jam Nuts Flat Washer Lift Clamp Secure LiftAll-Thread Mounting Stud Mounting BracketElectrical, Hydraulic and Interlock Calibration and Floor Level Adjustment Fmvss 403/404 Certification ChecklistFloor Level Switch Ground Sense CalibrationPress the UP switch until Level and both outer barriersUnfold fully ramp position Passenger from platformReverse order of procedures Fold tall yellow outer barrier Lift latch handle DownLower latch handle Lift latch handle Deploy / Stow handrail Lower latch handle750 CyclesAdjustments and Diagnostics
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