Braun NL501 Series Service Manual
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Braun NL501 Series Service Manual

Braun NL501 Series Service Manual

Public use wheelchair lifts
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"Providing Access to the World"
International Corporate Hdqrs: P.O. Box 310
®
1-800-THE LIFT
(574) 946-6153
37221 Rev. A
April
2012
Service Manual for:
NL501
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
01
01
W ARNING
Read manual
before installing
or servicing lift.
Failure to do so
may result in
serious bodily
injury and/or
property damage.

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  • Page 1 Service Manual for: NL501 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 The warranty cards must be processed to activate the warranty. Two Braun Serial No./Series No. identification tags (shown below) are posted on the lift. One I.D. tag is posted on the right side vertical channel. A second I.D. tag is located on the lift mounting base.

  • Page 3: Table Of Contents

    Intermediate Vertical Channel (S-Beam) - Rear ..27 Outer Vertical Channel - Front ......28 Outer Vertical Channel - Rear ....... 29 Handrail Assembly ..........30 ..........31 ......32 ..32 ......34 Warranty Braun ® Limited Warranty ........35-37 Page 1...

  • Page 4: Lift Terminology

    Lift Terminology Mounting Pump Base Stow / Deploy Module Hydraulic H Brace Inner Cylinder Vertical Channel Intermediate Raise / Lower Vertical Channel Hydraulic (S-Beam) Cylinder (not visible) Outer Vertical Channel Outer Upper Control Arm Inner Inner Upper Roll Stop Control Arm Right Inner Handrail...

  • Page 5: Switch And Sensor Locations

    Switch and Sensor Locations Inner Roll Stop Up Activation Block Inner Roll Stop Occupied Switch 15754 Inner Roll Stop Deployed - Floor Level Cam (Outer) 500-0015 Inner Roll Stop Deployed - Floor Level Cam (Inner) 500-0014 Platform Unfold Microswitch 30205 Full In Microswitch Full Out...
  • Page 6 403/404 compliant. If an operation does not func- the referenced procedures to correct the problem 571.404). or contact a Braun Corporation Product Support representative. 1. Verify lift door closed signal (vehicle interlock). 2. Refer to the interlock installation instructions.

  • Page 7: Switch Adjustments

    Switch Adjustments Full In: point when the Inner Roll Stop is locked in the upright position. This deactivation stops the downward travel is stopped. Power is removed from the pump motor and triggers an alarm. and In Solenoid. The lift is fully stowed when the rubber bumpers are is also deactivated (depressed).
  • Page 8 CYCLE Repeat the harness diagnostic procedure. If an incorrect value is still present after check- The Braun Corporation Product Support Lift_Out Floor_SW Department. L CD MODULE...
  • Page 9 NOTES This page intentionally left blank. Page 7...
  • Page 10 Maintenance and Lubrication Lubrication Diagram Inner / Outer Vertical Channel Outer Rollers (36) H Brace Intermediate Pivot Points (2) Vertical Channel Inner / Outer (S-Beam) Edges (8) Vertical Channel Tapered Rollers (36) Inner Roll Stop Slide Bracket Slot Area (2) (front &...

  • Page 11: Maintenance And Lubrication Schedule

    Use of improper lubricants can attract dirt or other contaminants which could result in wear or damage Contact your sales representative or call The Braun Cor- to the components. Platform components exposed poration. One of our national Product Support represen-...
  • Page 12 Inspect all threaded fasteners for damage and posi- Resecure or replace damaged fasteners. See Ex- tive securement. ploded View section for fasteners that require #242 General Purpose Blue Loctite (Braun #18822). Remove pump module cover and inspect: nections for securement or damage Page 10...
  • Page 13 Maintenance and Lubrication Schedule Resecure or replace if needed. Inspect cotter pins: Use Braun 32840-QT (Exxon ® Univis HVI 26) should be changed if there is visible contamination. lowered fully and roll stop unfolded fully. Measure Replace if needed. for visible wear or damage Tighten or replace if needed.
  • Page 14 NOTES This page intentionally left blank. Page 12...

  • Page 15: Lift Electrical Schematic

    RD(22) GND / PWR INTERLOCK HAND PENDANT...
  • Page 16 JUMPER INTERLOCK GND / PWR...
  • Page 17 NOTES This page intentionally left blank. Page 15...
  • Page 18 Kit, Hand Pump Check Valves - Main (Qty. 1) / Inlet (Qty. 1) / Outlet (Qty. 1) - Not Shown 34899K Kit, Valve Block - Check Valve (Qty. 1) / Relief Valves (Qty. 2) - Not Shown 34903K Hydraulic Fluid use Braun 32840-QT (Exxon ® Univis HVI Page 16...
  • Page 21 Hand Pump Assembly Exploded View and Parts List DWG. NOTES 1) REMOVE BOLT AND NUT AND DISCARD. 2) INSTALL FITTINGS INTO PUMP B.C.#34572 PRIOR TO BOLTING TO BRACKET. NOTE: 1 PART NUMBER DESCRIPTION ITEM 87592 FITTING-90 DEG 4JICFX#4JICM 24504 FITTING-7/16-20/7/16-20/37° 14614 NUT-1/4-20 NYLOCK/AUTO-BK 10003...

  • Page 22: Hydraulic Schematic

    Hydraulic Schematic .5 GPM Relief Valve 1500 Relief Valve 1500 Rear Front In/Out In/Out Cylinder Cylinder “B” Valve “C” “A” “D” Valve Valve Valve Valve Block Main Relief Valve 2000 PUMP 1900 Rear Front Up/Down Up/Down Cylinder Cylinder BACKUP Reservoir PUMP Description Symbol...

  • Page 23: Mounting Base

    Exploded Views and Parts Lists Mounting Base DWG. NOTES 1) APPLY " GREASE-MOBIL TEMP SHC 32 " B.C. #28598 TO ALL BEARINGS NOTED. 12x 2) APPLY ALCOHOL TO BRACKET B.C. #500-0018 PRIOR TO APPLYING BUMPERS B.C. #82064 3) PLACE BOLT B.C. #10013 THRU EYELET OF CABLE B.C. #22166A PRIOR TO INSERTING THROUGH HOLE NOTE: 3 NOTE: 1...

  • Page 24: Upper / Lower Control Arms - Front

    Exploded Views and Parts Lists Upper / Lower Control Arms - Front DWG. NOTES 1) APPLY " GREASE-MOBIL TEMP SCH 32 B.C. #28598 TO ALL BEARINGS. 2) APPLY LOCTITE ® THREADLOCKER BLUE 242 ® B.C.# 18822 TO B.C. #25171 6X. 3) TORQUE COLLAR TO: 144 in/lbs.

  • Page 25: Upper / Lower Control Arms - Rear

    Exploded Views and Parts Lists Upper / Lower Control Arms - Rear DWG. NOTES 1) APPLY " GREASE-MOBIL TEMP SCH 32 B.C. #28598 NOTE: 2 TO ALL BEARINGS. NOTE: 1 2) APPLY LOCTITE ® THREADLOCKER BLUE 242 ® B.C.# 18822 TO B.C.

  • Page 26: Inner Vertical Channel - Front

    Exploded Views and Parts Lists Inner Vertical Channel - Front DWG. NOTES 1) PARTS 500-0128 AND 500-0175A TO BE LOCATED TOWARD INSIDE OF CHANNEL 10X. 2) PARTS 500-0110 AND 500-0101A TO BE LOCATED TOWARD OUTSIDE OF CHANNEL 8X. 3) APPLY " GREASE-MOBIL TEMP SCH 32 " B.C. #28598 TO INSIDE ROLLERS PRIOR TO RE ASSEMBLY 18X.

  • Page 27: Inner Vertical Channel - Rear

    Exploded Views and Parts Lists Inner Vertical Channel - Rear DWG. NOTES 1) PARTS 500-0128 AND 500-0175A TO BE LOCATED TOWARD INSIDE OF CHANNEL 10X. 2) PARTS 500-0110 AND 500-0101A TO BE LOCATED TOWARD OUTSIDE OF CHANNEL 8X. 3) APPLY " GREASE-MOBIL TEMP SCH 32 " B.C. #28598 TO INSIDE ROLLERS PRIOR TO RE ASSEMBLY 18X.

  • Page 28: Intermediate Vertical Channel (S-Beam) - Front

    Exploded Views and Parts Lists Intermediate Vertical Channel (S-Beam) - Front DWG. NOTES 1) APPLY " GREASE-MOBIL TEMP SHC 32 " B.C. #28598 TO INSIDE ROLLER PRIOR TO ASSEMBLY. NOTE: 1 ITEM QTY. PART NO. DESCRIPTION 500-0736 GUARD-CHAIN ROLLER 21708R021 CHAIN-LEAF-4x4-.5 PITCH x 21"...

  • Page 29: Intermediate Vertical Channel (S-Beam) - Rear

    Exploded Views and Parts Lists Intermediate Vertical Channel (S-Beam) - Rear DWG. NOTES 1) APPLY " GREASE-MOBIL TEMP SHC 32 " B.C. #28598 TO INSIDE ROLLER PRIOR TO ASSEMBLY. NOTE: 1 ITEM QTY. PART NO. DESCRIPTION 500-0736 GUARD-CHAIN ROLLER 21708R021 CHAIN-LEAF-4x4-.5 PITCH x 21"...

  • Page 30: Outer Vertical Channel - Front

    Exploded Views and Parts Lists Outer Vertical Channel - Front DWG. NOTES NOTE: 1 1) PARTS 500-0128 AND 500-0175A TO BE 3) APPLY "GREASE-MOBIL TEMP SCH 32" B.C. #28598 TO NOTE: 3 LOCATED TOWARD INSIDE OF INSIDE ROLLERS PRIOR TO ASSEMBLY 18X. CHANNEL 8X.

  • Page 31: Outer Vertical Channel - Rear

    Exploded Views and Parts Lists Outer Vertical Channel - Rear DWG. NOTES NOTE: 1 1) PARTS 500-0128 AND 500-0175A TO BE LOCATED TOWARD INSIDE OF CHANNEL 8X. NOTE: 3 2) PARTS 500-0110 AND 500-0101A TO BE LOCATED TOWARD OUTSIDE OF CHANNEL 10X. 3) APPLY "...

  • Page 32: Handrail Assembly

    Exploded Views and Parts Lists Handrail Assembly - Front DWG. NOTES 1) INSERT BOLT THROUGH CAM AND THREAD INTO SHAFT AFTER SHAFT HAS BEEN INSTALLED INTO HANDRAIL. NOTE: 1 NOTE: 1 ITEM QTY. PART NO. DESCRIPTION 10059BKWP NUT-3/8-16 HEX/AUTO-BK-WITH PATCH NOTE: 1 28977 BOLT-3/8-16 X 1 3/4 "...
  • Page 33 Exploded Views and Parts Lists Platform Assembly DWG. NOTES 1) INSTALL PARTS B.C. #34357 AND B.C. 325371 AFTER OUTER PLATFORM IS INSTALLED INTO PLACE. 2) LOCATE SPRING HOOK INTO SPRING ATTACHMENT BRACKET ON THE BOTTOM SIDE OF THE PLATFORM INNER DECK. 3) USE (3) SCREWS FROM INNER ASSEMBLY AND RIVETS TO INSTALL GUARD INTO PLACE.
  • Page 34 Exploded Views and Parts Lists Platform Sub-Assembly - Inner DWG. NOTES 1) APPLY LOCTITE ® THREADLOCKER BLUE 242 ® B.C. #18822 ON ALL THREADS DURING RE ASSEMBLY. 2) APPLY "GREASE-MOBILTEMP SHC 32" B.C.#28598 TO PULLEY INNER HOLE AND INSERT INTO SLOT BEFORE BOLTING INTO PLACE. 3) PLACE HINGE B.C.
  • Page 35 Exploded Views and Parts Lists Platform Sub-Assembly - Inner Side Plate (Front) DWG. NOTES ® ® 1) USE LOCTITE THREADLOCKER BLUE 242 B.C.# 18822 ON ALL THREADS DURING RE ASSEMBLY. ITEM QTY. PART NO. DESCRIPTION 500-0156 HANDRAIL SUPPORT BRACKET 81027-000 SCREW-1/4-20 X 1-1/4 FHSC 25527 SCREW-5/16-18 X 3/4 "...
  • Page 36 Exploded Views and Parts Lists Platform Sub-Assembly - Outer DWG. NOTES 1) USE LOCTITE ® THREADLOCKER BLUE 242 ® B.C.# 18822 ON ALL THREADS DURING RE ASSEMBLY. 2) ROUTE HARNESS THRU STRAIN RELIEF (ITEM #40). 3) ROUTE HARNESS THRU CLAMP (ITEM #30). NOTE: 3 NOTE: 2 ITEM...

  • Page 37: Braun ® Limited Warranty

    The warranty period begins of Braun, or, if the dealer places the product into any type of service prior to retail sale, on the date the may not be transferred.
  • Page 38 WHAT IS NOT COVERED the product not attributable to Braun, any material, component or part of the product that is warranted by another entity (Note: the written warranty provided by the manufacturer of the material, component or part components or parts.
  • Page 39 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. WARRANTY REGISTRATION and MISCELLANEOUS Your warranty registration records should be completed and delivered to the appropriate companies, includ- ing the Braun Delivery Checklist &...
  • Page 40 NOTES This page intentionally left blank. Page 38...
  • Page 41 "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 42 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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