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Page 6

LCD Display

All basic functions 

(UP, DOWN, STOW 

and DEPLOY) 

should show a value 

of “1” when activated 

via the hand-held 

pendant. 

Full Out

Moving Up At Floor 

Level

Moving Down

Ground 

Level

   F_IN SW 

  1

  FOUT SW                         1           1         1           1             1          1            1   

1             

   FLV SW                                                                1                          
  IN_RL_ST                                                 1           1                         1 

 

 

1

 1_IN_BLW                                                 1 

   1                         1 

 

 

1

 OBAR SW                                   = 1 When Outer Barrier Switch is Deactivated 

 

PLAT_UNF 

                              = 1 When Platform is Unfolded 

 

BEL_ST SW   

 

    = 1 When Lift is at or Above Stow Level

    

LCD Diagnostic Codes

When all of the harnesses are correctly 

connected to the control board, the values 

shown in the chart below will display when 

the corresponding action is taken. “1” will 

appear on the LCD module as shown in the 

Illustration at right.  If any other value ap-

pears on the LCD screen during the specific 

diagnostic procedure, verify that the correct 

harness 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 check-

ing the harness and connections, contact 

BraunAbility Aftersales. 

Hand-held Pendant

Stowed

Inner 

Roll Stop

Locked

Inner 

Roll Stop

Unlocked

Inner 

Roll Stop

Unlocked

Inner 

Roll Stop

Locked

1” Below

Floor Level

K

MP916

0.010Ω

.5%  R

103

103

8.00M

L_DN

B_UP

L_OUT

L_UP

B_DN

L_IN

50# CAL

O_BAR

D14

J27

U?

CYCLE

DIAG

U11

U10

J9

J11

J10

J17

J16

J14

J8

J5

J21

J19

J20

D9

D6

D8

D7

D13

D11

J39

J38

K7

K10

K1

D12

D10

100  VHA 6C5

C12

220

 CFK

6C9

C18

J13

100  VHA 6C5

C13

HAND-1

INT

W

AKE

3

1

4

2

103

R55

Y2

8.00M

Y1

R54

R57

R60

K11

J23

R61

R52

1002

R42

Lift_Out       Floor_SW 

R41

R40

R39

R27

R77

R53

R68

C10

C5

C8

V104C4

V104

C17

V104

C14

C11

V104

J37

J

I

H

G

L

A

B

C

D

4    3    2    1

K2

220

 35A

5Q6

220

 35A

5Q6

B - UP

B - DN

L - OUT

L - IN

 

HI

SW_1

SW_2

LO

GND

PWR

LIGHTS

ALARM

VALVE

PUMP

1002

1002

R31

1001

R30

C2

R21

1001

R32

1001

R34

1001

R33

1001

R35

1001

R46

1001

R58

 332

R49

1002

R51

1002

R44

1001

R36

1001

R47

1001

R45

1001

R37

1001

1002

1002

1002

1002

R70

1002

R72

D5

D4

D3

D2

R26

2400 

R75

U5

R29

2051 

R76

J35

J15

C23

C19

1002

R64

1002

R62

1002

R78

1002

R48

1002

R69

D16

D17

2430

2430

0 3 N 0 1

A

 1 0 5 T

C6

7 0 1 3 1

A

 1 0 5 T

J6

J36

J32

         M

AT

J40

U20

FL_CL

Bit_1

Bit_0

J41

J42

®

NL501

100524-002

REV

37331

U

TA

LP

NF 1

_

K

MP916

0.010Ω

.5%  R

103

103

8.00M

L_DN

B_UP

L_OUT

L_UP

B_DN

L_IN

50# CAL

O_BAR

D14

J27

U?

CYCLE

DIAG

U11

U10

J9

J11

J10

J17

J16

J14

J8

J5

J21

J19

J20

D9

D6

D8

D7

D13

D11

J39

J38

K7

K10

K1

D12

D10

100  VHA 6C5

C12

220

 CFK

6C9

C18

J13

100  VHA 6C5

C13

HAND-1

INT

W

AKE

3

1

4

2

103

R55

Y2

8.00M

Y1

R54

R57

R60

K11

J23

R61

R52

1002

R42

Lift_Out       Floor_SW 

R41

R40

R39

R27

R77

R53

R68

C10

C5

C8

V104C4

V104

C17

V104

C14

C11

V104

J37

J

I

H

G

L

A

B

C

D

4    3    2    1

K2

220

 35A

5Q6

220

 35A

5Q6

B - UP

B - DN

L - OUT

L - IN

 

HI

SW_1

SW_2

LO

GND

PWR

LIGHTS

ALARM

VALVE

PUMP

1002

1002

R31

1001

R30

C2

R21

1001

R32

1001

R34

1001

R33

1001

R35

1001

R46

1001

R58

 332

R49

1002

R51

1002

R44

1001

R36

1001

R47

1001

R45

1001

R37

1001

1002

1002

1002

1002

R70

1002

R72

D5

D4

D3

D2

R26

2400 

R75

U5

R29

2051 

R76

J35

J15

C23

C19

1002

R64

1002

R62

1002

R78

1002

R48

1002

R69

D16

D17

2430

2430

0 3 N 0 1

A

 1 0 5 T

C6

7 0 1 3 1

A

 1 0 5 T

J6

J36

J32

         M

AT

J40

U20

FL_CL

Bit_1

Bit_0

J41

J42

®

NL501

100524-002

REV

37331

_

LCD MODULE

K

MP916

0.010Ω

.5%  R

103

103

8.00M

L_DN

B_UP

L_OUT

L_UP

B_DN

L_IN

50# CAL

O_BAR

D14

J27

U?

CYCLE

DIAG

U11

U10

J9

J11

J10

J17

J16

J14

J8

J5

J21

J19

J20

D9

D6

D8

D7

D13

D11

J39

J38

K7

K10

K1

D12

D10

100  VHA

6C5

C12

220

 CFK

6C9

C18

J13

100  VHA

6C5

C13

HAND-1

INT

W

AKE

3

1

4

2

103

R55

Y2

8.00M

Y1

R54

R57

R60

K11

J23

R61

R52

1002

R42

Lift_Out       Floor_SW 

R41

R40

R39

R27

R77

R53

R68

C10

C5

C8

V104C4

V104

C17

V104

C14

C11

V104

J37

J

I

H

G

L

A

B

C

D

4    3    2    1

K2

220

 35A

5Q6

220

 35A

5Q6

B - UP

B - DN

L - OUT

L - IN

 

HI

SW_1

SW_2

LO

GND

PWR

LIGHTS

ALARM

VALVE

PUMP

1002

1002

R31

1001

R30

C2

R21

1001

R32

1001

R34

1001

R33

1001

R35

1001

R46

1001

R58

 332

R49

1002

R51

1002

R44

1001

R36

1001

R47

1001

R45

1001

R37

1001

1002

1002

1002

1002

R70

1002

R72

D5

D4

D3

D2

R26

2400 

R75

U5

R29

2051 

R76

J35

J15

C23

C19

1002

R64

1002

R62

1002

R78

1002

R48

1002

R69

D16

D17

2430

2430

0 3 N 0 1

A

 1 0 5 T

C6

7 0 1 3 1

A

 1 0 5 T

J6

J36

J32

         M

AT

J40

U20

FL_CL

Bit_1

Bit_0

J41

J42

®

NL501

100524-002

REV

37331

U

TA

LP

NF 1

_

K

MP916

0.010Ω

.5%  R

103

103

8.00M

L_DN

B_UP

L_OUT

L_UP

B_DN

L_IN

50# CAL

O_BAR

D14

J27

U?

CYCLE

DIAG

U11

U10

J9

J11

J10

J17

J16

J14

J8

J5

J21

J19

J20

D9

D6

D8

D7

D13

D11

J39

J38

K7

K10

K1

D12

D10

100  VHA

6C5

C12

220

 CFK

6C9

C18

J13

100  VHA

6C5

C13

HAND-1

INT

W

AKE

3

1

4

2

103

R55

Y2

8.00M

Y1

R54

R57

R60

K11

J23

R61

R52

1002

R42

Lift_Out       Floor_SW 

R41

R40

R39

R27

R77

R53

R68

C10

C5

C8

V104C4

V104

C17

V104

C14

C11

V104

J37

J

I

H

G

L

A

B

C

D

4    3    2    1

K2

220

 35A

5Q6

220

 35A

5Q6

B - UP

B - DN

L - OUT

L - IN

 

HI

SW_1

SW_2

LO

GND

PWR

LIGHTS

ALARM

VALVE

PUMP

1002

1002

R31

1001

R30

C2

R21

1001

R32

1001

R34

1001

R33

1001

R35

1001

R46

1001

R58

 332

R49

1002

R51

1002

R44

1001

R36

1001

R47

1001

R45

1001

R37

1001

1002

1002

1002

1002

R70

1002

R72

D5

D4

D3

D2

R26

2400 

R75

U5

R29

2051 

R76

J35

J15

C23

C19

1002

R64

1002

R62

1002

R78

1002

R48

1002

R69

D16

D17

2430

2430

0 3 N 0 1

A

 1 0 5 T

C6

7 0 1 3 1

A

 1 0 5 T

J6

J36

J32

         M

AT

J40

U20

FL_CL

Bit_1

Bit_0

J41

J42

®

NL501

100524-002

REV

37331

_

LCD MODULE

Summary of Contents for 14122700001

Page 1: ...icles other than motor homes with a gross vehicle weight rating GVWR that exceeds 4 536 kg 10 000 lb DOT Public Use Lift NL503 400649 Rev A January 2016 WARNING Read manual before installing or servic...

Page 2: ...rial No Model No Two BraunAbility Serial No identification tags shown below are posted on the lift One I D tag is posted on the front inner vertical channel A second I D tag is located by the hydrauli...

Page 3: ...Schematic 19 Repair Parts Lift Exploded Views and Parts Lists Mounting Base 20 Upper Lower Control Arms Front 21 Upper Lower Control Arms Rear 22 Inner Vertical Channel Front 23 Inner Vertical Channe...

Page 4: ...Platform Outer Platform Raise Lower Hydraulic Cylinder not visible Outer Barrier Latch Outboard Platform Side Plate Mounting Base Outer Vertical Channel Intermediate Vertical Channel S Beam Transitio...

Page 5: ...roswitch 30205 Full Out Microswitch 30205 Full Out Cam 400024 Full In Cam 400024 Full In Microswitch 30205 Inner Roll Stop Deployed Floor Level Cam Outer 501 2015BM Inner Roll Stop Deployed Floor Leve...

Page 6: ...tivate if the threshold area is occupied when the platform is at least 1 below floor level 1 Make sure connector s to threshold sensors are properly connected 2 Call BraunAbility Aftersales Platform m...

Page 7: ...n the Inner Roll Stop is occupied in the range of 1 below floor level to the point when the Inner Roll Stop is locked in the upright position This deactivation stops the downward travel and triggers a...

Page 8: ...220 CFK 6C9 C18 J13 100 VHA 6C5 C13 HAND 1 INT WAKE 3 1 4 2 103 R55 Y2 8 00M Y1 R54 R57 R60 K11 J23 R61 R52 1002 R42 Lift_Out Floor_SW R41 R40 R39 R27 R77 R53 R68 C10 C5 C8 V104 C4 V104 C17 V104 C14...

Page 9: ...Page 7 NOTES This page intentionally left blank...

Page 10: ...ubrication Diagram Inner Outer Vertical Channel Roller Pins 56 SG Upper Control Arms Pivot Points 12 LO Lower Control Arms Pivot Points 12 LO Intermediate Beam Chain Roller 2 LO Inner Roll Stop Hinge...

Page 11: ...res When replacing these components be sure to apply grease during installation procedures Specified lubricants are available from BraunAbili ty part numbers provided on previous page All listed inspe...

Page 12: ...age and posi tive securement Remove pump module cover and inspect Hydraulic hoses fittings and connections for wear or leaks on pump valve block and hand pump Harness cables wires terminals fuses and...

Page 13: ...rms 2 Outer barrier latch gas springs 2 hairpin Spring tensioner pulley bracket 1 Leaf chain mounting pins 8 Hydraulic Fluid Pump Check level Note Fluid should be changed if there is visible contamina...

Page 14: ...Page 12 NOTES This page intentionally left blank...

Page 15: ...USED OR 20 YL RD 20 RD 20 RD 26 RD 20 RD 20 OR BK 20 WH VT 20 2 1 2 1 YL BK 18 YL WH 18 DK BU 18 2 1 3 2 3 1 2 3 1 5 6 4 5 6 4 1 OR 22 DK BU 18 YL WH 18 YL BK 18 2 1 RD 16 RD 16 BK 16 2 1 2 1 OR 16 RD...

Page 16: ...D WIRE CODE 7 WHITE 22 RED 22 VIOLET 22 BLACK 22 GREEN 22 BLUE 22 ORANGE 20 ORANGE 22 6 5 4 3 2 1 COLOR NO 7 COND WIRE CODE 7 YELLOW BLACK 18 YELLOW WHITE 18 ORANGE 22 DARK BLUE 18 4 3 2 1 COLOR NO 4...

Page 17: ...Page 15 NOTES This page intentionally left blank...

Page 18: ...ttings 402043KS 18 1 Cylinder In Out Front 1514 3 9900A 19 1 Cylinder In Out Rear 1514 3 9800A 20 3 Fitting Tee 7 16 20 JIC 37 Male x 3 30793 21 1 Valve Pressure Compensator 30281 22 1 Handle w Grip 1...

Page 19: ...16 17 17 10 25 15 15 19 18 7 1 2 12 10 30 7 10 10 10 20 28 20 29 9 10 20 24 5 6 5 14 4 26 21 35 23 10 10 10 10 9 13 11 11 15 9 9 36 Arrow must face valve block Discard bolt and nut when replacing hand...

Page 20: ...D 10 ITEMS NOT SHOWN 1 38144A HARN NL501 INTERLOCK NUT 1 4 20 HEX LOCK AUTO BK BOLT 1 4 20 X 3 1 2 HEX SPACER VALVE BLOCK NL501 ELBOW 7 16 20 M O RING 37 KNOB KNURLED MANUAL VALVE NL500 BLOCK MANUAL V...

Page 21: ...V1 RV2 Front In Out Cylinder Rear In Out Cylinder D Valve C Valve B Valve 1500 PSI Fixed Displacement Pump Vented Reservoir Backup Pump Single Acting Cylinder Check Valve 2 Way 2 Position Solenoid Val...

Page 22: ...5 16 18 X 1 HEX HD CAP 24505 2 ELBOW 45 7 16 20 7 16 20 SAE MALE O RING 100524 002 1 ASSEMBLY E J LIFT CONTROLLER 51267 1 GROM ID 88 GR 06 GD 1 25 T 30 87592 2 FITTING 90 DEG 4JICFX 4JICM 82064 4 BUMP...

Page 23: ...ARM TIE BAR 15 1 501 0045FA ASSY LOWER OUTER FR CONTROL ARM 16 1 501 0055FA ASSY FRONT CONTROL ARM 17 1 34832 COLLAR DBL SPLIT 3 4 ID BLK OXIDE 18 1 936 0403 PIN PIVOT PARALLEL ARM 19 1 25346 WASHER...

Page 24: ...19 1 501 0056RA ASSY RR LINK OUTER 20 1 501 0045RA ASSY LOWER OUTER RR CONTROL ARM 21 1 501 0048A ASSY H BRACE 22 1 501 0044RA ASSY UPPER OUTER RR CONTROL ARM 23 1 936 0403 PIN PIVOT PARALLEL ARM 24...

Page 25: ...2 1 PIN COTTERED 4x4 LEAF CHAIN PART NO QTY ITEM DESCRIPTION PART NO QTY ITEM DESCRIPTION CHAIN LEAF 4x4 5 PITCH x 41 CYLINDER ORIFICE FITTING KIT 2 FITTINGS CLIP CABLE 3 8 PLASTIC PIN COTTER 1 32 x 1...

Page 26: ...NL500 BUMPER RUBBER 1 5 16 18 x 5 8 STUD PIN COTTERED 466 CHAIN LO PRO HEAD CHAIN LEAF 4x4 5 PITCH x 41 CHAIN LEAF 4x4 5 PITCH x 21 30375 16 2 SCREW 10 32 x 1 2 BHSCS AUTO BLACK 21759 2 PIN COTTERED 4...

Page 27: ...BLUE 242 BA 18822 OR EQUIVALENT ON THREADS 1 500 0111A 81039 000 500 2112 501 2100WBKN 2 1 1 1 SCREW 1 4 20 X 5 8 BHSCS ZINC PIN ROLLER I BEAM I BEAM WELDMENT ASSY ROLLER CHAIN I BEAM 23173 21708R021...

Page 28: ...8 x 3 8 BHCS SS CAM INNER MICRO SWITCH FLR LVL INR ROL STOP DEPLOY CAM OUTER MICRO SWITCH FLR LVL INR ROL STOP DEPLOY 21708R021 21759 23173 10 9 8 1 1 1 CHAIN LEAF 4x4 5 PITCH x 21 500 2736BM 11 1 GUA...

Page 29: ...ARING FLANGE 1 2 x 1 4 08FDU04 24537 2 SCREW 10 32 x 3 8 FL HD HX SKT AUTO BK 35 34346 1 BUMPER UHMW 1 x 0 234 36 23173 1 PIN COTTER 1 32 x 1 2 4x4 37 34575 1 PIN COTTERED 466 CHAIN LO PRO HEAD 38 343...

Page 30: ...FORM PIVOT 34347BBM 20 1 HANDRAIL MOUNTING SHAFT BOTT RR NL500 BOLT 3 8 16 X 3 4 FLBHSCS GD8 RING 1 2 EXT SELF LOCK SNAP AUTO BK BALL STUD 10mm SEAT LIFT A 9008 2 500 0109YL 24442 990 0341 500 0047BM...

Page 31: ...5 1 1 1 1 SHAFT HANDRAIL PIVOT NL500 HR CAM FOLLOWER 1 28983 MOD BUCKEL HALF ASSY VISTA NON INTERLOCKED 7 1 25171 BOLT 5 16 18 X 2 FLBHSCS GD8 8 1 10059BKWP NUT 3 8 16 HEX AUTO BK WITH PATCH 9 1 3481...

Page 32: ...ATTACHMENT BRACKET ON THE BOTTOM SIDE OF THE PLATFORM INNER DECK 3 USE 3 SCREWS FROM INNER ASSEMBLY TO INSTALL GUARD INTO PLACE 4 APPLY LOCTITE THREADLOCKER BLUE 242 BA 18822 OR EQUIVALENT ON THREADS...

Page 33: ...V POP SD64BS 3 16 13 25 AUTO BK 35031 1 GAS SPRING 14 47 EXT 9 02 COM P1 1150N 11513 1 RIV POP SD64BS 3 16 13 25 AUTO BK 1 3 500 0209BM BRACKET GAS SPRING MOUNT PLATFORM 11387BK 3 5 16 18 NUT AUTO BLA...

Page 34: ...SLIDETRACK OUTER FRONT BOTTOM DESCRIPTION PART NO ITEM QTY 4 3 2 1 6 5 7 8 9 10 DESCRIPTION PART NO ITEM QTY 3 5 2 8 1 9 10 7 4 6 SIDERAIL INNER PLATFORM NL500 34410BM SCREW 1 4 20 X 875 BHSC 500 030...

Page 35: ...0 X 1 3 4 SHCS GRADE 8 34 10058 2 NUT 5 16 18 HEX AUTO BK 32 33411BM 2 BRACKET ADJUST SPLIT FOOT 40 34779 1 STRAIN RELIEF OUTER BARRIER HARNESS 38 34686 2 PIN ROLLSTOP GAS SPRING 37 945 2206RNBM 1 LAT...

Page 36: ...QTY ITEM PART NUMBER DESCRIPTION 3 2 1 1 1 1 29857 31787 400623BM DIODE GREEN LED PANEL MOUNT 24V SWITCH TOGGLE W GOLD CONTACTS SPADE TERM BKT MTG GREEN LED POWER SWITCH NL503 QTY ITEM PART NUMBER DES...

Page 37: ...anyone Braun reserves the right to make changes in the design or material of its products without incurring any obligation to incorporate such changes in any previously manufactured product Braun mak...

Page 38: ...by another entity Note the written warranty provided by the manufacturer of the material component or part is the direct responsibility of that manufacturer items that are added or changed after the...

Page 39: ...tates do not allow a reduction 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 d...

Page 40: ...vailable at the time of publication BraunAbility reserves the right to make changes at any time without notice 400649 Rev A January 2016 631 West 11th Street P O Box 310 Winamac IN 46996 USA Phone 1 5...

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