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Braun Corporation Under-Vehicle Lift A1 Series Service Manual

Public use wheelchair lifts
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NUVL855RM24
www.braunlift.com
®
"Providing Access to the World"
International Corporate Hdqrs: P.O. Box 310
1-800-THE LIFT
®
(574) 946-6153
34807 Rev. C
May 2012
Service Manual for:
Under-Vehicle Lift
Public Use Wheelchair Lifts
Series
DOT — Public Use Lift
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 multi-
purpose passenger vehicles other than motor homes with a gross
vehicle weight rating (GVWR) that exceeds 4,536 kg (10,000 lb).
®
®
Winamac, IN 46996 USA
FAX: (574) 946-4670
®
A1
A1
Read manual
before installing
or servicing lift.
Failure to do so
may result in
serious bodily
injury and/or
property damage.
W ARNING

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Summary of Contents for Braun Corporation Under-Vehicle Lift A1 Series

  • Page 1 Service Manual for: NUVL855RM24 ® Under-Vehicle Lift Public Use Wheelchair Lifts Series DOT — Public Use Lift 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 multi- purpose passenger vehicles other than motor homes with a gross...
  • Page 2 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.

  • Page 3: Table Of Contents

    Contents Troubleshooting and Maintenance Lift Terminology ............... 2 Switch and Sensor Locations ......... 3 Certification Checklist Diagnostic Procedures ....4 Adjustments and Calibration ........... 5 LCD Diagnostic Codes ........... 6 Floor Level and Inner Roll Stop Adjustments .... 7-11 Lubrication Diagram ............. 12 Maintenance and Lubrication Schedule ....

  • Page 4: Lift Terminology

    Lift Terminology Hydraulic Cylinders Platform Cable-activated Manual Release System Hand-Held Pendent Control Inner Roll Stop Rolling Horizontal Arms Shield Handrail with Belt Outer Barrier Actuator Torque Tube Lifting Two-Stage Arms Outer Barrier Inboard Right Left Outboard Page 2...

  • Page 5: Switch And Sensor Locations

    Switch and Sensor Locations Full Out Cam Full Out 75776CN Limit Switch Lift Out Cam Lift Out 73950A 73775 Limit Switch Pressure 73950A Transducer 30426 Floor Level Below Stow Limit Switch Limit Switch 73950A 73950A Floor Level Below Stow 73712 73712 Switch 0 Limit Switch...

  • Page 6: Certification Checklist Diagnostic Procedures

    Platform Lift Installations in Motor Vehicles (49 CFR the referenced procedures to correct the problem 571.404). or contact a Braun Corporation Product Support representative. • Vehicle movement is prevented unless the lift door is closed, ensuring the lift is stowed.

  • Page 7: Adjustments And Calibration

    Adjustments and Calibration Adjustment Procedures 5. Lock jam nuts together. Unlock and push the manual cable in fully. Lock release cable. Move the platform Lift Out Switch: The Lift Out Switch stops inward in and out until platform chain release assembly travel of the carriage/platform during Stow function engages chain.

  • Page 8: Lcd Diagnostic Codes

    Repeat the harness Lift_Out Floor_SW ® diagnostic procedure. If an incorrect value is still present LCD MODULE after checking the harness and connections, contact The diag Button Braun Corporation Product Support Department. CYCLE 1002 1002 1002 1002 HAND-2 1002...

  • Page 9: Floor Level And Inner Roll Stop Adjustments

    Floor Level and Inner Roll Stop Adjustments Achieving proper floor level posi- and the inner roll stop must rest CAUTION tioning of the platform and inner solidly on vehicle floor with 7° roll stop requires a combination maximum angle (relative to the Do not adjust inner of Floor Level switch adjustment platform).
  • Page 10 Floor Level and Inner Roll Stop Adjustments Floor Level Switch Adjustment 4. If the inner roll stop does not rest solidly on ve- Floor Level Requirements: When the lift is hicle floor or the angle is more than 7°, open positioned at floor level (raised fully), the bot- the hand pump valve (turn counterclockwise) to tom of the platform must be above floor level...
  • Page 11 Floor Level and Inner Roll Stop Adjustments Inner Roll Stop Cam Adjustment 5. Measure the angle of inner roll stop and verify the slope is a maximum of 7° (rela- tive to the platform). If correct, tighten the serrated flange nut and screw secur- "...
  • Page 12 Floor Level and Inboard Locator Adjustments Usable Platform Length Do not adjust Linkage rod adjustment affects angle CAUTION of inner roll stop (vertical position). the inner roll stop linkage Improper inner roll rod unless stop linkage rod extra usable adjustment may platform length result in lift damage.
  • Page 13 Floor Level and Inboard Locator Adjustments Inner Roll Stop Occupied Sensor Adjustment Adjustment Nut The optimum setting for the inner roll stop occupied sensor adjustment nut is to have just enough pressure to fold and unfold the inner roll stop without triggering the inner roll stop occupied sensor.

  • Page 14: Lubrication Diagram

    Maintenance and Lubrication Lubrication Diagram Hydraulic Carriage Drive Chain and Rollers Cylinder Rollers Drive Chain Pivot (bearings) Release Latch Points Eccentric Shaft Rollers (bearings) Platform Cable-activated Manual Release System Torque Tube Hydraulic Pivot Points Rolling Cylinder Horizontial Pivot Lifting Arm Carriage Tube Points Pivot Points...

  • Page 15: Maintenance And Lubrication Schedule

    Specified lubricants are available from The there is any sign of wear, damage or improper operation. Braun Corporation (part numbers provided on previous Contact your sales representative or call The Braun Cor- page).
  • Page 16 Maintenance and Lubrication Schedule Inspect lift for rattles Correct as needed. Check drive chain tension. Pull out and lock manual release cable. Adjust chain tension as needed. See Drive Chain Adjustment. Inspect inner roll stop and linkage for: Resecure, replace or correct as needed. See •...
  • Page 17 Maintenance and Lubrication Schedule Inspect platform cable-activated manual release Ensure T-handle release and cable assembly op- system (T-handle/cable assembly and carriage erate properly. Ensure carriage can be manually movement) extended and retracted freely. Inspect limit switches and cams for securement Resecure, replace or adjust as needed.

  • Page 18: Troubleshooting Diagnosis Chart

    Hydraulic Schematic Troubleshooting and yourself. Contact your dealer or are provided to aid in trouble- repair procedures call The Braun Corporation. One shooting. must be performed of our national Product Support as specified by au- representatives will direct you to...
  • Page 19 Troubleshooting Diagnosis Chart FUNCTION POSSIBLE CAUSE REMEDY 4.11 Outer Barrier switch is out of Check diagnostic LCD for Outer Barrier switch sta- adjustment or defective. tus. Barrier is down or barrier release pin partially 4.00 out. Adjust or replace switch as necessary. LIFT WILL GO UP WITH 4.12 Full Out switch is not activated or...
  • Page 20 Troubleshooting Diagnosis Chart FUNCTION POSSIBLE CAUSE REMEDY 9.12 Poor plug connections Check harness connectors A1 and A2, E1, N1, 9.00 N2, E1, F1 and F2. BARRIER WILL NOT OPERATE Check power at motor. Slightly lengthen rod 9.13 Barrier actuator motor or UP OR DOWN end if release pin is difficult to remove or replace WITH OVER-...
  • Page 21 Wiring Schematic SW PWR SW PWR SW PWR IGN PWR IGN PWR IGN PWR BELOW STOW BELOW STOW BELOW STOW FULL OUT FULL OUT FULL OUT SW 1 SW 1 SW 1 DK BU LIFT OUT LIFT OUT LIFT OUT SW 0 WH / BK WH / BK...

  • Page 22: Contact Removal

    Hydraulic Parts List Item Qty. Description Part No. Pump Assembly (M259 with Reservoir/with Back-up pump) 87060-24V Motor, Pump 16504-IS Valve, “Down” (with Solenoid) 16505 Clamp, Reservoir - H-48 17069 Reservoir Replacement Kit (Includes Item #10) 88188K O-Ring (only), Hand Pump Mounting 17351 Hand Pump (Backup) with O-Rings (Includes Item #6) 87065...

  • Page 23: Hydraulic Diagram

    Hydraulic Diagram Arrow must face pump Arrow must face pump Page 21...

  • Page 24: Pump Module Parts List

    Pump Module Parts List ITEM PART NO. DESCRIPTION 22-01-1045A ASSY-BOX-BRAUN HYDRAULIC & CONTROLS 73824W BRACKET-PC BOARD MOUNTING/WMT 30728 LAMP-BICOLORED LED PANEL 12185 SWITCH-KILL/TOGGLE/(2) 1/4" SCREW SPADES 32426RMA ASSY-HAND PENDANT-NHTSA NUVL 36824KS* OPTIONAL 4 BUTTON PENDANT INSTALL KIT *AFTER INITIAL INSTALLATION, 36823A IS THE 4-BUTTON HAND PENDANT REPLACEMENT PART 10970 BOLT-1/4-20 X 3/4 GR5-HEX/AUTO-BK...

  • Page 25: Pump Module Diagram

    Pump Module Diagram 21 20 Page 23...
  • Page 26 Exploded Views and Parts Lists Housing Assembly Parts List 73760A CHAIN RELEASE ASSY 75101RMNW HOUSING WMT-855RM 34733W WMT-MANUAL RELEASE BRACKET BRACKET-CAM-OUTSIDE 24751 SCREW-1/4-20 X 1 1/2 WSHR HD TYPE 75776CN 84317 CONNECTOR LINK #35 CHAIN NP 26948 CLAMP-CABLE NYLON 5/16 DIA/BLACK 83080 NUT-10-32 SERRATED FLANGE ZP 87615...

  • Page 27: Housing Assembly

    Exploded Views and Parts Lists Housing Assembly Page 25...
  • Page 28 Exploded Views and Parts Lists Carriage Assembly Parts List 82755 SCREW-#10-32 X 5/8" FL HD-HX SKT/SS SCREW-10-32 X 3/8 PHP ZP THD CUT 26058 26948 CLAMP-CABLE NYLON 5/16 32495 SNAP RING, 3/4" HEAVY DUTY 29515 BEARING-.75 ID X .625 LG-12DU10 34215 BEARING-UHMW FLAT-BLK 31137...

  • Page 29: Carriage Assembly

    Exploded Views and Parts Lists Carriage Assembly Page 27...
  • Page 30 Exploded Views and Parts Lists Platform Assembly Parts List - Main Note: See pages 30-32 for other platform assembly breakdowns. 82348 BOLT-5/16-24 X 1 SKT BTN PLTD 10091 CABLE TIE-11" SOLID (NOT SHOWN) 74409 BLOCK-NYLON SLIDER OUTSIDE 34040A HARNESS-INBOARD BARRIER POSTION 53" (NOT SHOWN) 74410 BLOCK-NYLON SLIDER INSIDE 34549...

  • Page 31: Platform Assembly

    Exploded Views and Parts Lists Platform Assembly - Main Note: See pages 30-32 for other platform assembly breakdowns. DWG. NOTES 1) INSTALL SKIDS AFTER HANDRAILS. NOTE: 1 Page 29...
  • Page 32 Exploded Views and Parts Lists Platform Assembly - Inner Roll Stop 75415CW CATCH WMT-REAR BARRIER 75411RMNYL PLATE-REAR BARRIER SCREW-#10-32X1/2 FHDHXS-AUTO BLK-W/PATCH 17192P 83080 NUT-10-32 SERRATED FLANGE ZP 75414C SKID-REAR BARRIER 23471 SCREW-1/4-20 X 3/8 FL SOC CAP HD 84383 E CLIP-3/8 SHAFT 75413 SHAFT-BARRIER HINGE/RR 85101...
  • Page 33 Exploded Views and Parts Lists Platform Assembly - Front Handrail DWG. NOTES 1) THREAD ITEM #16 INTO ITEM #12 UNTIL THERE IS 5/16” BETWEEN HANDRAIL AND HEAD OF BOLT. 2) USE LOCTITE RED #271 (B.C. #11522-1) ON ALL FASTENERS. 3) CABLE TIE SAFETY BELT WIRE TO SAME SIDE THAT BELT IS MOUNTED. 75384RNW WMT-HANDRAIL/FRONT/NUVL855RM24 34428...
  • Page 34 Exploded Views and Parts Lists Platform Assembly - Front Handrail Lock 34775 COVER-YELLOW PLASTIC HANDLE 27276 WASHER-FINGER DISK SPRING 15328 WASHER-.507" ID / 1" OD X .025" 34177W WELDMENT-HANDRAIL LATCH FRONT 34757 NUT-HANDRAIL LOCK 33668 WASHER-.5" ID X 1.003" OD X .057-.067" THK PTFE 84384 ROD END-5/16-24 MALE 33426...

  • Page 35: Braun Limited Warranty

    WARRANTY COVERAGE AND WARRANTY COVERAGE TIME PERIODS The Braun Corporation (“Braun”) warranty covers certain parts of this wheelchair lift for three (3) years or 10,000 cycles and the cost of labor to repair or replace those parts for one (1) year or 3,000 cycles. This limited warranty covers substantial defects in materials and workmanship of the lift, provided that the lift is operated and maintained properly and in conformity with the owner’s manual.
  • Page 36 ® Braun Limited Warranty This warranty does not cover, and in no event shall Braun be liable for towing charges, travel, lodging, or HOW TO GET SERVICE To obtain warranty service the owner must do all of the following: erage period designated above. should have discovered, the claimed defect.
  • Page 37 ® Braun Limited Warranty EVENTS DISCHARGING BRAUN FROM OBLIGATION UNDER WARRANTY or replace anything and void this warranty: misuse, neglect, collision, accidents, failure to provide routine odometer tampering. LEGAL REMEDIES only sets forth what Braun will do and does not guarantee anything about the product for any time period. in the statute of limitations, so this reduction may not apply to you.
  • Page 38 NOTES This page intentionally left blank. Page 36...
  • Page 39 "Providing Access to the World" ® Over 300 Braun Dealers Worldwide ® "Providing Access to the World" International Corporate Hdqrs: P .O. Box 310 Winamac, IN 46996 USA 1-800-THE LIFT ® (574) 946-6153 FAX: (574) 946-4670...
  • Page 40 All illustrations, descriptions and specifications in this manual are based on the latest product information available at the time of publication. The Braun Corporation reserves the right to make changes at any time without notice. at the time of publication. The Braun Corporation reserves the right to make changes at any time without notice.

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