Service Manual for: CKA Vista HZg^Zh Public Use Wheelchair Lifts Series A5 DOT — Public Use Lift “DOT — Public Use Lift” verifies that this platform lift 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 multipurpose passenger vehicles other than motor homes with a gross vehicle weight rating (GVWR) that exceeds 4,536 kg (10,000 lb).
Congratulations We at The Braun Corporation wish to express our fullest appreciation on your new purchase. With you in mind, our skilled craftsmen have designed and assembled the finest lift available. This manual provides service-related material. Refer to the FMVSS No. 403 Quick Reference Installation Sheet for installation instructions, operating instructions and maintenance procedures.
Contents Troubleshooting and Maintenance Lift Terminology............................................................. 2 Switch and Sensor Locations ..................................... 3 Certification Checklist Diagnostic Procedures ......... 4 Platform Fold Pressure Adjustment ............................ 5 Platform Angle Adjustment ....................................... 6-7 Platform Stop Blocks .................................................... 7 Platform Foor Level Adjustment .......................
Lift Terminology Hand-Held Pendant Control 32819 DOW Lift-Tite™ Latches (2) Towers (2) Top Parallel Arms (2) Visual Threshold Warning N UP Main Cylinders (2) LD UNFO FOLD 32820 ® Audible Threshold Warning Unfold Assist Compression Springs (2) Adjustable Quiet-Ride Stow Blocks (2) (not visible) Platform Lights Vertical Arm Covers (4) Threshold Warning Plate Pump Module (Rear) Handrails (2) Opposite Pump Side Vertical Arm Base Plate Inner Roll Stop Bottom Parallel Arms (2) Saddle (2)
Switch and Sensor Locations Inboard Left Right Threshold Strip Switch 31221A (Qty. 2) Outboard *Stow Microswitch 23184 (Qty. 2) 32819 DOWN UP LD UNFO FOLD 32820 ® *Ground Detect Magnet 31664 *Ground Detect Magnetic Sensor 30433A60 *Rotary Position Sensor 31194A *IB Occupancy Microswitch Assy.
Certification Checklist Diagnostic Procedures The following operations and conditions must be functionally verified in order for the lift to be FMVSS 403/404 compliant. If an operation does not function as described or a condition is not met, follow the referenced procedures to correct the problem or contact a Braun Corporation Product Support representative at 1-800-THE LIFT®. • Vehicle movement is prevented unless the lift door is closed, ensuring the lift is stowed. 1.
Platform Fold Pressure Adjustment 1. Position the platform at the floor level loading position. 2. Loosen the hex nut on the adjustment screw (do not remove hex nut). 3. Turn the adjustment screw counter clockwise until the platform does not fold when the Fold button is pressed. 4. Turn the adjustment screw clockwise in 1/4 turn increments and press the Fold button until the platform folds completely (Note: Return the platform to floor level position after each attempt to fold the platform). 5.
Platform Angle Adjustment Adjusting the platform angle based on the relationship of the platform at ground level directly affects the angle of the platform when positioned at floor level. Millennium “NL” Series Figure C Unfold the lift and visually examine the angle of the platform when positioned at floor level. Lower the platform fully and note the angle of the platform when it reaches ground level also.
Platform Angle Adjustment Adjustment Allen screws are provided on each side of the lift platform for adjusting the platform angle. Adjust platform angle as specified on previous page. To raise the outboard end of platform - turn adjustment screw clockwise. Note: Both adjustment screws must be adjusted equally. Apply Loctite® to adjustment screws following adjustment. To lower the outboard end of platform - turn adjustment screw counterclockwise.
Platform Floor Level Adjustment Before setting floor level position: tion if unable to stop platform when powering lift. • Adjust platform angle as detailed on page 6. 2. Turn Lift Power switch Off. • Ensure both stop blocks are making full contact with vertical arms (details on page 7). 3. Press Floor Position Set button (located between pump housing and lift tower). Floor Level Adjustment: 4. While pressing the Floor Position Set button, turn the Lift Power switch On. 1.
Bridging Microswitch Adjustment Adjustment Screw Bridging Microswitch: Bridging Microswitch G H The bridging microswitch is located at the bottom of the right (front) vertical arm. See Photos A and B. An adjustment screw is built into the platform stop block. The bridging microswitch will be deactivated if the outboard end of the platform contacts the unloading surface before the inboard end while the DOWN switch is pressed.
LCD Lift Codes To better understand the Braun LCD Trouble shooting display you must first understand the numbers that appear on the screen. There are Flashing Codes, Solid Error Codes, and Solid Normal Operational Codes. Flashing Codes #65-89: About 10 seconds after an operation has stopped there are a set of scrolling flashing numbers that indicate whenever a particular sensor or switch has been activated. These numbers will start at number 65 and scroll up to number 89, then start the sequence over.
LCD Lift Codes Listed below are codes that the lift controller outputs during lift operation. The codes will be displayed on an LCD screen located on the lift control board inside the pump module. See the Manual Operating Instructions in the operator's manual for pump cover removal instructions.
Maintenance and Lubrication Lubrication Diagram Lift-Tite™ Latch Dampening Spring (2 springs - 4 Points) LO 32819 Parallel Arm Pivot Pin Bearings (16) LO N DOW UP Lift-Tite™ Latches (Tower Pivot Points - 2) LO Hydraulic Cylinder Pivot Bushings (8) LO LD UNFO FOLD 32820 ® Saddle Bearing Buttons (2) DE Parallel Arm Pivot Pin Bearings (16) LO Handrail Pivot Pins (2) LO Inner Roll Stop Lever Bearings (2) and Slots (2) LO Platform Fold Gear Rack (2) and Gear Link Assembly Teeth (2) DE Saddle Bearing
Maintenance and Lubrication Schedule Proper maintenance is necessary to ensure safe, troublefree 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 maintenance and lubrication procedures specified in this schedule must be performed by a Braun authorized service representative at the scheduled intervals according to the number of cycles.
Maintenance and Lubrication Schedule 750 Cycles Inspect Lift-Tite™ latches and gas springs for wear or damage (bent, deformed or misaligned), positive securement (external snap rings) and proper operation Resecure, replace damaged parts or otherwise correct as needed. Note: Apply Light Grease to Lift-Tite™ latch tower pivot point if replacing latch. Inspect outer barrier for proper operation Correct or replace damaged parts.
Maintenance and Lubrication Schedule continued 1500 Cycles Inspect microswitches for securement. Resecure or replace if needed. Make sure lift operates smoothly Realign towers and vertical arms. Lubricate or correct as needed.
Maintenance and Lubrication Schedule continued 4500 Cycles Inspect saddle bearing (1) and saddle bearing buttons (2) Apply Door-Ease or replace if needed. See Lubrication Diagram. Inspect vertical arm plastic covers Resecure or replace if needed. Inspect power cable Resecure, repair or replace if needed. Mounting Check to see that the lift is securely anchored to the vehicle and there are no loose bolts, broken welds, or stress fractures.
Lift Electrical Schematic BK(24 GA COPPER) BK/WH(24 GA SILVER) NOTE: ALL WIRES ARE 22 GA. UNLESS OTHERWISE NOTED.
Li Un f fo Sc t E ld he lec fo m tri r: at ca ic l Lift Wiring Diagram BK(18) J20 4 5 6 7 7 8 9 COLOR NO. COLOR 1 NOT USED 1 NOT USED NOT USED 2 NOT USED 3 NOT USED 4 NOT USED 5 BROWN(20) YL / LT. BU(18) +12V SIGNAL 6 7 GRAY / RED(18) BLACK(20) NOT USED 8 NOT USED 9 WHITE(20) YL / LT. BU(18) GROUND SIGNAL BK(20) RD(20) 2 1 4 3 J9 NO.
Hydraulic Schematic Orifice Orifice Down Valve Lifting Relief Valve 2500 PSI Secondary Valve M Folding Relief Valve 1900 PSI 800 PSI Opposite Pump Cylinder Pump Side Cylinder BACKUP PUMP Description PUMP Symbol Fixed Displacement Pump Pump Motor Description Symbol Hydraulic Port M 2 Way 2 Position Solenoid Valve Backup Pump Pressure Compensated Flow Control Single Acting Cylinder Relief Valve Check Valve Filter Screen Unfold Orifice Vented Reservoir Manual Shutoff Valve Page 19
Hydraulics Parts List Item Qty.
Hydraulics Diagram 1 2 4 3 27 27 6 5 Hydraulic Pump Motor 21 10 26 26 7 17 14 22 23 15 Backup Pump 18 Pump Side Cylinder Opposite Pump Cylinder 13 12 Manual 16 20 19 24 25 28 28 29 30 Page 21
Pump Module Parts List Part Numbers of Items Dedicated per Lift Model Item 1 2 3 Qty.
Pump Module Diagram 42 Pump Mounting Bolts 39 38 Apply red #271 Thread Locker Locktite® to the three pump mounting bolts (items 26 and 27) if a blue nylon patch is not present on the bolts when retrofitting an M268 pump assembly. Loctite® is available from The Braun Corporation under part number 11522-1.
Repair Parts List Item Qty. Item Qty.
Exploded View 36 52 98 112 109 73 52 98 10 113 79 189 98 74 28 98 73 27 148 190 106 134 52 17 100 74 18 18 100 33 16 15 14 16 190 14 53 78 52 14 1 58 26 106 43 17 112 23 114 17 165 34 9 50 17 65 38 29 113 52 53 53 27 28 111 104 42 14 28 27 28 27 15 55 53 52 134 74 74 24 56 167 13 2 33 36 35 52 27 134 112 70 111 74 175 164 3 104 134 196 74 106 95 71 60 113 94 89 71 52 63 106 148 28 52 109 52 106 78 106 134 1
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Service Manual for: CKA Vista HZg^Zh Series A5 Public Use Wheelchair Lifts Braun™ Five-Year Limited Warranty The Braun Corporation of Winamac, Indiana, warrants that it will repair (or replace at Braun’s sole option) any defect in material or workmanship in its wheelchair lift for five years*, providing the lift is installed, operated and maintained properly.