Braun Vista 2 NVL Series User manual

2
Vista 2
W
ARNING
Read manual
before installing
or servicing lift.
Failure to do so
may result in
serious bodily
injury and/or
property damage.
ual
Man
"Providing Access to the World"
International Corporate Hdqrs: P.O. Box 310 Winamac, IN 46996 USA
1-800-THE LIFT®[phone] FAX: [phone]
®
®
Braun Vista 2 Series
Braun Vista 2 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).
CKA
HZg^Zh
CKA
HZg^Zh
Public Use Wheelchair Lifts
BA
Service Manual for:
34322 Rev. A
March
2008
Patent #5,261,779
Patent #6,065,924
Patent #6,238,169
Patent #6,464,447
Patent #6,599,079
Patent #6,692,217
Patent #6,739,824
Patent #5,261,779
Patent #6,065,924
Patent #6,238,169
Patent #6,464,447
Patent #6,599,079
Patent #6,692,217
Patent #6,739,824
Patent #6,837,670
Patent #6,599,079
Patent #6,692,217
Patent #6,739,824
Patent #6,837,670 Patents Pending
Patents Pending
Series BA

The Braun Corporation
NVL917IB-2
BA-00002
66 14BI
09/18/2007
1-800-THE-LIFT
BRAUNLIFT.COM
TM
PUMP CODE CYLINDER
MFG DATE
SERIAL NUMBER
TM
DOT Public Use Lift MODEL#
Max. Lifting Capacity - 800Lbs.
PATENT
5261779-6065924-6238169-6464447-65990
79-6692217-6739824-6837670
OWNER'S WARRANTY REGISTRATION
PURCHASED FROM
DATE INSTALLED
NAME
ADDRESS
CITY
TELEPHONE
TO VALIDATE WARRANTY
REGISTRATION CARDS MUST BE RETURNED TO THE BRAUN CORPORATION.
OWNER
STATE ZIP
Sample Warranty/Registration Card
Two Braun Serial No./Series No. identification tags (shown below) are posted on the lift.
One I.D. tag is posted on the opposite pump side vertical arm. A second I.D. tag is located
on the opposite pump side tower. Both I.D. tags provide the product identification infor-
mation provided on the warranty/registration card. Record the information in the space
provided (or document on a copy). This information must be provided when filing
a warranty claim or ordering parts.
Warranty and Registration Instructions
Immediately upon receiving the lift, examine the
unit for any damage. Notify the carrier at once
with any claims.
Two warranty/registration cards (shown right) are
located in the lift-mounted manual storage pouch.
The sales representative must process one of the
cards. The consumer must fill out the other card
and mail it to The Braun Corporation. The war-
ranty is provided on the back cover of this manual.
The warranty cards must be processed to
activate the warranty.
Congratulations
Model No.
Series No.
Serial No.
Pump Code
Cylinder Code
Date of Manufacture
Sample Serial No./Series No. Identification Tag
Serial No.Model No. Cylinder Code
Series No. Pump Code
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.
Braun Vista Series™lifts are built for dependability and will provide years of
pleasure and independence as long as the lift is installed and serviced as specified by
a Braun certified technician, and the lift is operated by an instructed person.
Sincerely,
THE BRAUN CORPORATION
Ralph W. Braun
Chief Executive Officer
NVL917IB-2 BA-00002 66 14BI

Page 1
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
Tower Microswitch Adjustment.................................... 8
Notes............................................................................... 9
Lubrication Diagram.................................................... 10
Maintenance and Lubrication Schedule................11-14
Lift Electrical Schematic ............................................ 15
Lift Wiring Diagram .................................................... 16
Hydraulics
Hydraulic Schematic .................................................. 17
Hydraulics Parts List .................................................. 18
Hydraulics Diagram .................................................... 19
Repair Parts
Pump Module
Pump Module Parts List ....................................... 20
Pump Module Diagram ......................................... 21
Lift Exploded Views and Parts Lists
NVL917FIB-2 Base Plate Assembly ..................... 22
NVL917IB-2 Base Plate Assembly ....................... 23
Top Parallel Arm Assembly ................................... 24
Bottom Parallel Arm Assembly............................. 25
Hydraulic Cylinder Assembly - Main .................... 26
Vertical Arm Assembly .......................................... 27
Handrail Assembly................................................. 28
Platform Assembly ...................................................... 29
Notes ............................................................................. 30
Contents

Page 2
UP
DOWN
32819
FOLD
UNFOLD
32820
®
Pump Module
(Rear)
Hand-Held
Pendant
Control
Base Plate
Top Parallel Arms (2)
Adjustable Quiet-Ride Stow Blocks (2)
Main Cylinders (2)
Vertical Arm Covers (4)
Opposite Pump Side
Vertical Arm
Handrails (2)
Outer Barrier
Pump Side Vertical Arm
Bottom Parallel
Arms (2)
Platform Lights (2)
Outboard
Right
Lift-Tite™
Latches (2)
Unfold Assist Compression Springs (2)
Outer Barrier Latch
Platform Side Plates (2)
Left
Inboard
Towers (2)
Threshold
Warning
Plate
Audible
Threshold
Warning
(not visible)
Visual
Threshold
Warning
Inner Roll Stop
Lift Terminology
Saddle (2)
Inner Fold Arm (2)
Outer Fold Arm (2)
Inboard
Platform
Outboard
Platform

Page 3
Switch and Sensor Locations
Inboard
Outboard
Right
Left
IB Occupied
Microswitch
Stow Interlock
Microswitch
IB Occupied &
Stow Interlock Assy.
32514NA
*Unfold
Microswitch
*Threshold Alarm
Microswitch
*Up & Unfold
Microswitch Assy.
975-3121A
*Threshold Alarm
& Partial Fold
Microswitch Assy.
975-3121A
IB Raised Switch
32519A
Bridging
Microswitch
33689A
*Partial Fold
Microswitch
Outer Barrier
Occupied / Raised
Microswitch
33775A
*Note: Mirror image for
right (front) pump lifts.
UP
DOWN
32819
FOLD
UNFOLD
32820
®
Threshold Strip Switch
33337A (2 strips per)
*Up Microswitch

Page 4
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 refer-
enced 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. Verify on the pump module mounted interlock connecter that the lift stowed signal - pin 9 has a
ground signal OR lift not stowed signal - pin 5 has a open signal (depends on interlock used).
2. Refer to the interlock installation instructions.
• Lift operation shall be prevented unless the vehicle is stopped and vehicle movement is prevented.
1. Verify vehicle secure signal (pin 6) has a +12 volt signal.
2. Refer to the interlock installation instructions.
• The platform will not fold/stow if occupied.
- Refer to Platform Fold Pressure Adjustment procedures.
• The inner roll stop will not raise if occupied.
- Call Product Support
• The outer barrier will not raise if occupied.
- Refer to Outer Barrier Fold Pressure Adjustment procedures.
• Verify platform lighting when lift is deployed and pendant illumination when lift is powered.
1. Replace bulb(s) in the light housing.
• A warning will activate if the threshold area is occupied when the platform is at least 1" below floor level.
1. Remove the threshold warning plate.
2. Verify the threshold strip switch connector is securely connected.
3. Reinstall threshold warning plate.
4. Test threshold warning (push down on plate). If warning is not activated, see Step 5.
5. Remove the threshold warning plate and replace non-functioning threshold switch.
6. Repeat Step 4. If warning is still not activated, call Product Support.
• Platform movement is prohibited beyond the position where the inner roll stop is fully deployed (up).
- Call Product Support.
• Lift platform movement shall be interrupted unless the outer barrier is deployed (up).
- Call Product Support.
Certification Checklist Diagnostic Procedures

Page 5
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 plat-
form folds completely (Note: Return the platform to floor level position after each attempt to fold the
platform).
5. Turn the adjustment screw an additional 1/8 turn after the platform folds successfully.
6. Tighten the hex nut without moving the adjustment screw.
7. Verify the platform will not stow while occupied.
Platform Fold Pressure Adjustment
Platform Fold
Adjustment
Allen Screw
Note: Secure adjustment
screw and tighten hex
nut following adjustment.
DO NOT adjust this valve!
(Located beside Solenoid Valves)

Page 6
Platform Angle Adjustment
Wedges
Angle A
equals
Angle B.
✓
B
Figure C
A
Approximately
1" Clearance
Figure D
Millennium “NL” Series
Century “NCL” Series
Vista “NVL” Series
Inboard Outboard
Inboard Outboard
Wedges
Toe must
angle
down
slightly.
Barrier
must
unfold
fully.
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.
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. The outboard
end of the platform (toe) must contact
the ground first when the platform is
lowered (all lift models).
Millennium “NL” Series:
The platform angle should be adjusted so
there is a balance between the angle at
both positions (equal amount of angle).
Angle A should equal angle B as shown
in Figure C.
Century “NCL” Series:
Vista “NVL” Series:
The platform angle must be adjusted so
the outboard end of the platform (toe) is
angled down slightly when positioned at
floor level. See Figure D. The outboard
end of the platform must contact the
ground first to ensure the spring-loaded
outer barrier unfolds fully.
Adjustment Procedures: Adjustment
Allen screws are provided on each side of
the lift platform for adjusting the platform
angle. Details and photos are provided
on the opposite page.
Base Plate Wedges: Installations where
base plate wedges are used require more
platform angle adjustment than normal.
Platform Stop Blocks: When ad-
justing platform angle, ensure both
stop blocks are making full contact
with the vertical arms (details on
opposite page).
Floor Level Adjustment: Following
platform angle adjustment, set floor
level positioning as detailed in Tower
Microswitch Adjustment (details on
page 8).

Page 7
Platform Angle
Adjustment Screws
Adjustment Screw Allen Head
A
B
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.
Platform Stop Blocks
Must make full contact.Gapnot permitted.
Both stop blocks must
make full contact with
the edge of vertical arms.
CD
Stop Block Guideline
All Lift Models
Right Wrong
Turn
clockwise
to raise
outboard
end of
platform
When adjusting platform
angle, setting floor level
position or adjusting
bridging microswitch -
ensure both stop blocks
are making full contact
with the vertical arms.
Stop
Block
Vertical
Arm Stop
Block
Vertical
Arm
Turn
counter-
clockwise
to lower
outboard
end of
platform
To raise the outboard end
of platform - turn adjustment
screw clockwise.
To lower the outboard end
of platform - turn adjustment
screw counterclockwise.
Note: Both adjustment screws
must be adjusted equally.
Apply Loctite®to adjustment
screws following adjustment.

Page 8
Tower 3 (Alarm) Switch Adjustment
Threshold Alarm Switch
1. Position platform at the fully raised
(floor level) position using the pen-
dant control.
2. Place pressure on the threshold
warning plate (base plate). Con-
tinue applying pressure to threshold
plate and turn switch adjustment
screw clockwise until alarm sounds.
If alarm sounds when pressure is
first applied go to Step 3.
3. Continue applying pressure to
threshold plate and slowly turn
switch adjustment screw coun-
terclockwise until the alarm stops
sounding.
Tower 4 (Fold) Switch Adjustment
Partial Fold Switch
1. Position platform at 45˚angle using
the manual hand pump or pendant
control.
2. View the Tower 4 microswitch inside
the lift tower (see Photo B). Turn
the switch adjustment screw in or
out as needed until the radius of the
microswitch blade rides on the apex
of the activation plate.
3. Verify proper adjustment. Criteria
below must be met.
Proper Adjustment Criteria:
• Apply pressure (push down) on
outboard end of platform by press-
ing the hand pendant FOLD switch.
The platform should not fold (stow)
with light pressure applied.
• When folding fully, the platform
should stow tightly (snug with stow
blocks).
Figure E Note: Left (rear) pump lift de-
picted. Right (front) pump
lift is a mirrored image.
Note: Review adjustment
procedures below and adjust
as needed only.
Tower 1 (Unfold) Switch Adjustment
Floor Position from Stow
1. Position platform at the fully stowed
position using the manual hand
pump or pendant control.
2. Turn switch adjustment screw clock-
wise 3 full turns.
3. Press pendant UNFOLD switch (con-
tinue pressing switch until platform
stops unfolding).
4. When platform stops unfolding, turn
switch adjustment screw coun-
terclockwise while pressing the
pendant UNFOLD switch. Platform
position will change. Repeat adjust-
ment until criteria below is met.
Proper Adjustment Criteria:
• Bridge plate should just rest on
threshold plate (base plate).
• Should be an approximate 1/8"
clearance between outboard end
of the saddle and the lower parallel
arm. See Photo A.
Tower 2 (Up) Switch Adjustment
Floor Position from Below Floor
1. Lower platform a minimum of 6"
below floor level position using the
manual hand pump or pendant
control.
2. Turn switch adjustment screw coun-
terclockwise 3 full turns.
3. Press pendant UP switch (continue
pressing switch until platform stops).
4. When platform stops, turn switch
adjustment screw clockwise while
pressing the pendant UP switch.
Platform position will change. Ad-
just platform to meet criteria listed
for Tower 1 Switch ˝Proper Adjust-
ment Criteria˝.
TOWER
2
TOWER
1
32942
TOWER
4
TOWER
3
32943
A
B
Radius of Tower 4 Micro-
switch Blade activated by
Apex of Activation Plate.
1/8˝
TOWER
2
TOWER
1
32942
TOWER
4
TOWER
3
32943
Tower Microswitch Adjustment

Page 9
NOTES
This page intentionally left blank.

Page 10
UP
DOWN
32819
FOLD
UNFOLD
32820
®
Maintenance and Lubrication
Lubrication Diagram
Handrail Pivot Pin
Bearings (4)
LO
Parallel Arm
Pivot Pin Bearings (16)
LO
Lift-Tite™Latches
(Tower Pivot Points - 2)
LO
Lift-Tite™Latch Dampening Spring
(2 springs - 4 Points)
LO
Parallel Arm
Pivot Pin Bearings (16)
LO
Inner Roll Stop
Pivot Bearings (2)
LO
Outer Barrier
Pivot Bearings (2)
LO
Outer Barrier Latch
Pivot Points (2)
LO
Outer Barrier Gas Springs
(2 Springs - 4 Places)
LO
Platform Pivot Pin
Bearings (4)
LO
Outer Fold Arm
Bearings (8)
LO
Saddle
Bearing (2)
DE
Saddle Suppport
Bearings (8)
LO
Lift-Tite™Latch
Rollers (2)
LO
Outer Barrier
Latch Roller
Bearing (2)
LO
Inner Fold Arm
Cam Followers (4)
LO
Inner Fold Arm
Roller Pin
Bearings (4)
LO
Hydraulic Cylinder
Pivot Bushings (8)
LO
Inner Roll Stop
Lever Bearings (2)
and Slots (2)
LO
Outer Barrier
Switch Lever
Pivot Point
LO
Specified (recommended) Available Braun
Lubricant Type Lubricant Amount Part No.
LO - Light Oil
LG - Light Grease Light Grease Lubriplate 14 oz.
(Multipurpose) Can
Light Penetrating Oil LPS2, General Purpose 11 oz.
(30 weight or equivalent) Penetrating Oil Aerosol Can
Stainless Stick Door-Ease 1.68 oz.
Style (tube) Stick (tube)
DE - Door-Ease
15807
15806
15805
See the Maintenance/Lubrication Schedule for recommended applications per number of cycles.
Outer Barrier
Activation Foot
Bearings (4)
LO
Inner/Outer Fold Arm
Contact Area (2)
LG
Platform Fold Gear
Rack Bearings (4)
LG
Platform Fold Link
Bearings (4)
LO
Platform Fold Gear Rack (2) and
Gear Link Assembly Teeth (2)
DE
Gear Link Assembly
Bearings (4)
LO
Platform
Side Plate
Slots (2)
LG
Outboard Platform
Bearings (2)
LG

Page 11
Maintenance and Lubrication Schedule
Maintenance and
lubrication procedures
must be performed as
specified by an
authorized service
technician. Failure to
do so may result in
serious bodily injury
and/or property
damage.
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 autho-
rized service representative at the scheduled intervals
according to the number of cycles.
Braun dual parallel arm lifts are equipped with hard-
ened pins and self-lubricating bushings to decrease
wear, provide smooth operation and extend the service
life of the lift.
When servicing the lift at the recommended intervals,
inspection and lubrication procedures specified in
the previous sections should be repeated. Clean the
components and the surrounding area before apply-
ing lubricants. LPS2 General Purpose Penetrating
Oil is recommended where Light Oil is called out.
Use of improper lubricants can attract dirt or other
contaminants which could result in wear or damage
to the components. Platform components exposed to
contaminants when lowered to the ground may require
extra attention.
Lift components requiring grease are lubricated during
assembly procedures. When these components are
replaced, grease must be applied during installation
procedures. Specified lubricants are available from
The Braun Corporation (part numbers provided on
previous page).
All listed inspection,
lubrication and main-
tenance procedures
should be repeated at
“750 cycle” intervals
following the scheduled
“4500 Cycles” mainte-
nance. These intervals
are a general guideline
for scheduling mainte-
nance procedures and
will vary according to
lift use and conditions.
Lifts exposed to severe
conditions (weather,
environment, contamina-
tion, heavy usage, etc.) may require inspection and
maintenance procedures to be performed more often
than specified.
Cycle Counter: NCL-2 Series lift models are equipped
with a cycle counter located on the top of the pump
module. This cycle counter allows the lift attendant/op-
erator to easily track the number of cycles during daily
inspections of the lift.
Discontinue lift use immediately if maintenance and
lubrication procedures are not properly performed, or if
there is any sign of wear, damage or improper opera-
tion. Contact your sales representative or call The
Braun Corporation at 1-800-THE LIFT®. One of our
national Product Support representatives will direct you
to an authorized service technician who will inspect your
lift.
Outer barrier pivot points (2)
Outer barrier latch pivot points (2)
Outer barrier switch lever pivot point
Outer barrier latch roller bearing (2)
Outer barrier gas springs (2 springs - 4 points)
Gear link assembly bearings (4)
Gear link assembly teeth (2)
Outboard platform bearings (2)
Platform fold link bearings (4)
Platform fold gear rack bearings (4)
Platform fold gear rack teeth (2)
Lift-Tite™latches (tower pivot points - 2)
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Door Ease - See Lubrication Diagram
Apply Light Grease - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Grease - See Lubrication Diagram
Apply Door Ease - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
750
Cycles
W
ARNING
continued

Page 12
Lift-Tite™latch gas (dampening) spring pivot
points (2 springs - 4 points)
Platform side plate slots
Inspect Lift-Tite™latches and gas (dampening)
springs for wear or damage (bent, deformed or
misaligned), positive securement (lock nuts /
external snap rings) and proper operation
Inspect outer barrier for proper operation
Inspect outer barrier latch for proper operation,
positive securement, and detached or missing
spring(s)
Inspect lift for wear, damage or any abnormal
condition
Inspect lift for rattles
Apply Light Oil - See Lubrication Diagram
Apply Light Grease - See Lubrication Diagram
Resecure, replace damaged parts or otherwise
correct as needed. Note: Apply Light Grease to
Lift-Tite™latch tower pivot point if replacing latch.
Correct or replace damaged parts.
Correct or replace damaged parts and/or relubri-
cate. See Lubrication Diagram
Correct as needed.
Correct as needed.
750
Cycles
1500
Cycles
Maintenance and Lubrication Schedule
Apply grease (synthetic) to contact areas between
inner/outer fold arms. See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Apply Light Oil - See Lubrication Diagram
Correct, replace damaged parts and/or relubricate.
See Lubrication Diagram.
Resecure, replace or correct as needed. See
Platform Angle Instructions and Tower Microswitch
Adjustment Instructions.
Replace damaged parts.
Inner/outer fold arms (2)
Platform pivot pin bearings (4)
Outer fold arm bearings (8)
Inner roll stop pivot bearings (2)
Inner roll stop lever bearings (2)
Inner roll stop lever slot (2)
Saddle support bearings (8)
Inner fold arm roller pin bearings (4)
Inner fold arm cam followers (4)
Parallel arm pivot pin bearings (16)
Handrail pivot pin bearings (4)
Hydraulic cylinder pivot bushings (8)
Inspect Lift-Tite™latch rollers for wear or damage,
positive securement and proper operation (2)
Inspect inner roll stop for:
• Wear or damage
• Proper operation. Roll stop should just rest on
top surface of the threshold plate.
• Positive securement (both ends)
Inspect handrail components for wear or damage,
and for proper operation
continued
continued
Perform all procedures listed in previous section also

Page 13
Perform all procedures listed in previous section also
Inspect cotter pins on platform pivot pin (2)
Hydraulic Fluid (Pump) - Check level. Note: Fluid
should be changed if there is visible contamination.
Inspect the hydraulic system (cylinder, hoses, fit-
tings, seals, etc.) for leaks if fluid level is low.
Inspect cylinders, fittings and hydraulic connections
for wear, damage or leaks
Inspect parallel arms, bearings and pivot pins for
visible wear or damage
Inspect parallel arm pivot pin mounting bolts (8)
Inspect platform pivot pins, bearings and vertical
arms for wear, damage and positive securement
Inspect inner/outer fold arms, saddle, saddle sup-
port and associated pivot pins and bearings for
visible wear or damage
Maintenance and Lubrication Schedule
1500
Cycles
continued
continued
Inspect microswitches for securement and proper
adjustment.
Make sure lift operates smoothly
Inspect inner roll stop locks (2) and torsion springs
(2) for wear or damage and for proper operation
Inspect external snap rings:
• Outer fold arms (6)
• Lift-Tite™latch rollers (2)
• Lift-Tite™latch gas (dampening) springs (4)
• Outer barrier latch gas springs (2)
• Outer barrier latch pivots (2)
• Outer barrier switch lever pivot (1)
• Outer barrier latch rollers (2)
• Inner fold arm cam followers (4)
• Inner fold arm roller pins (4)
• Inner roll stop lever bracket pins (2)
Inspect outer fold arm pins (2), axles (2) and
bearings (8) for wear or damage and positive
securement
Remove pump module cover and inspect:
• Hydraulic hoses, fittings and connections for wear
or leaks
• Harness cables, wires, terminals and connections
for securement or damage
• Relays, fuses, power switch and lights for
securement or damage
Resecure, replace or adjust as needed. See
Microswitch Adjustment Instructions.
Realign towers and vertical arms. Lubricate or
correct as needed.
Replace damaged parts. Apply Light Oil to inner
roll stop lock pivot point.
Resecure or replace if needed.
Replace damaged parts and resecure as needed.
Apply Light Oil.
Resecure, replace or correct as needed.
Resecure, replace or correct as needed
Use Braun 32840-QT (Exxon®Univis HVI 26) hy-
draulic fluid (do not mix with Dextron III or other
hydraulic fluids). Check fluid level with platform
lowered fully and roll stop unfolded fully. Fill
to within 1/2" of the bottom of the 1-1/2" fill tube
(neck).
Tighten, repair or replace if needed.
Replace if needed.
Tighten or replace if needed.
Replace damaged parts and resecure as needed.
Apply Light Grease during reassembly proce-
dures.
Replace if needed.
4500
Cycles

Page 14
4500
Cycles
Repeat all previously listed inspection, lubrica-
tion and maintenance procedures at 750 cycle
intervals.
Consecutive
750 Cycle
Intervals
Inspect gas springs (cylinders - 6) for wear or dam-
age, proper operation and positive securement
Inspect saddle bearing (UHMW - 2)
Inspect vertical arm plastic covers
Inspect power cable
Mounting
Decals and Antiskid
Tighten, replace or correct as needed
Apply Door-Ease or replace if needed. See Lubri-
cation Diagram.
Resecure or replace if needed.
Resecure, repair 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. Re-
place antiskid if worn or missing.
Maintenance and Lubrication Schedule
continued

Page 15
Lift Electrical Schematic
UP/FOLD
SOLENOID
PUMP
1
2
4
3
CIRCUIT
SENTRY
(CIRCUIT BREAKER)
PLATFORM LIGHTS
(OPTION)
INTERLOCK
HYDRAULIC
(UP)
M
POWER
STUD
F1
C1
F1
C1 C1
C1
CHASSIS
GROUND
CHASSIS
GROUND
C1
C1
DOWN
SOLENOID
(N.C. Valve)
M
BATTERY
CHASSIS COMMON GROUND
FUSED COMMON GROUND
CIRCUIT BREAKER
JUNCTION
MOTOR
SWITCH
FLASHER
SOLENOID
NOTES:
1) JUNCTIONS ONLY OCCUR AT MARKED
INTERSECTIONS.
2) LIFT SHOWN IN STOWED POSITION.
UP
MICROSWITCH
UNFOLD
MICROSWITCH
COUNTER
THRESHOLD/ALARM
MICROSWITCH
FLASHER
PARTIAL FOLD
MICROSWITCH
FOLD RELIEF
SOLENOID
(N.O. Valve)
FOLD RELIEF
RELAY
NO
NC
C
NO
NC
C
NO
NC
C
NO
NC
C
POS.+
E
NEG. -
00000
6 1
7
2
5 4
6
2
5 4
3
3
7
1
2
1
4
3
5
6
7
8
9
2
1
4
3
5
6
7
8
9
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
THRESHOLD
WARNING
LIGHT
THRESHOLD
WARNING
BEEPER
THRESHOLD
STRIP SWITCHES
LIFT POWER SWITCH
MICROSWITCH
CAPACITOR
PRESSURE SWITCH
DIODE
SYMBOLDESCRIPTION
COUNTER
RELAY
LIGHT
BEEPER
NO
NC
C
+
E
-
00000
UP
DOWN
UNFOLD
FOLD
SWITCH BOX
L
SOLID BUS
SOLID BUS
G
LIFT
FUSE
FUSE
FUSE
WH(18)
BN(20)BN(20)
RD(18)
BK(18)
RD(18)
RD(18)
BK(18)
BK(18)
BU(18)
BK(18)
LT. BU / GN(18)
BU(18)
BU(18)
BK(18)
BK(18)
GN(18)
GN(18) GN(18)
OR(18)
OR(18)
GN(20)
GN(20)
GN(18)
WH(18)
WH(18)
WH(18)WH(18)
WH(18)
WH(18)
RD(18)
RD(18)
RD(18)
RD(18)
OR(12)OR(12)
OR(12)
OR(12)
RD(18)
DK. BU(18)
BK(20)
WH(18)
WH(18)
BK(16)
BK(16)
GN(18) GN(20)
WH(20)
GN(18)
RD(18)
GN(20)
BK(18) RD(18) BK(18)
BK(18) BK(18) BK(18) BK(18)
RD(18)
GN(20)
RD(18)
GN(20)
RD(18)
WH(18)
BK(20)
RD(18)
TN/OR(18)
TN/OR(18)
GN(18)
BK(20)
GN(20)
GN(20)
GD(24)
SV(24) SV(24)
GD(24)
GN(14)
GN(20)
RD/WH(18)
RD/WH(18)
RD/WH(18)
RD/WH(18)
RD(18)
BK(18)
GN(10)
RD(10)BK(4)
TO ALL
FUSED (F1)
GROUNDS
RD(10)
BK(20)
BK(20)
GN(20)
GN(20)
GN(20)
RD(4)
RD(4) RD(2)
RD(18)
RD(18)
RD(18)
RD(18)
RD(18)
RD(18)
RD(18) RD(18)
BK(18)
BK(18)
GN(18)WH(18)
WH(18)
BK(20)
VT(20)
VT(20)
VT(20)
BU(20)
BU(20)
WH(20)
BK(20)
RD(20)
OR(20)
GN(20)
RD(20)
OR(20)
GN(20)
BK(20)
WH(20)
BK(20) BK(22)
RD(22)
BK(20)
BU(20) BU(20)
BU(20)
BK(20)
BK(20)
BU(20)
BN(20)
BN(20)
WH(20)
WH(20)
VT(20)
VT(20)
BK(18)
BK(18)
DK BU(18)
DK BU(18)
REDUNDANT
POWER
RELAY
85
86
87 85
87
87A
30
IB OCCUPIED
MICROSWITCH
NO
NC
C
OUTER BARRIER
OCCUPIED / RAISED MICROSWITCH
NO
NC
C
STOW INTERLOCK
MICROSWITCH
NO
NC
C
BRIDGING
MICROSWITCH
NO
NC
C
85
86
87
87A
30
85 86
87
87A
30
VEHICLE SECURE SIGNAL
LIFT STOWED SIGNAL YL / LT. BU(18)
YL / LT. BU(18)
GY / RD(18)
LIFT NOT STOWED SIGNAL
(GROUND)
(GROUND)
(+12V INPUT) 6
6
4
3
4
3
2
2
1
1
5
5
1
1
2
2
3
3
4
6
2
4
6
2
5
5
1
1
1
2
1
2
3
3
4
2
4
2
3
3
1
1
IB RAISED
SWITCH
1
1
2
2
1
1
2
2
LIGHT
RELAY LIFT READY
LED
85 86
87
87A
30
+-
F1
C1
F1
F1
F1 F1
F1
TO ALL
COMMON (C1)
GROUNDS

Unfold for:
Lift Electrical
Schematic
Lift Wiring Diagram
Platform Lights (Option)
Circuit Sentry
(Circuit Breaker)
Bat.
Aux.
Lift
Power Cable
33688A
Pump Module
Power Feed
26082A-4
Connects to
Vehicle Battery
(+) Positive Post
Lead Wire
13362A
GN(20)
RD(10)
BK(20)
BK(20)
GN(20)
BK(20)
WH(18)
WH(18)
BK(18)
BK(20)
DK BU(18)
DK BU(18)
or
Note polarity of diode. It
must be oriented as shown.
Detail at left shows two different
styles of diode identification.
)4(KB
GN(20) GN(20)
GN(14)
GN(20)
RD/WH(18)
dnuo
rG
p
muP
Ground
BK(20)
WH(18)
RD(18)
TN / OR(18) BK(20)
BK(18)
GN(20)
GN(18)
RD(18)
RD/WH(18)
RD/WH(18)
SV(24)
GD(24)
GD(24)
SV(24)
Beeper
Threshold
Warning
Light
Outer Barrier
Occupied / Raised
Microswitch
Back
Plate
(Side view of
solenoids removed
from pump.)
Hydraulic
Pump
B
A
T
A U
X
GN(20)
GN(20)
GN(14)
BK(18)
BK(18)
BK(18)
DK. BU(18)
OR(12)OR(12)
33373RA - Rear Pump 33373FA - Front Pump
Threshold
Strip
Switches
IB Raised
Switch
IB Occupied
Microswitch
Counter
Interlock
Connection
Down
Fold
Flasher
BN(20)
BN(20)
Up
Microswitch C-H
COM
NO
NC
Unfold
Microswitch
Power
Stud
GN(18)
BK(18)
WH(18)
BU(18)
RD(10)
RD(10)
RD(10)
OR(18)
33337A
VEHICLE SECURE SIGNAL +12V INPUT
2
RD(18)
RD(4)
RD(2)
RD(4)
N.O.
N.C.
C-H
COM
NO
NC
N.O.
N.C.
COM.
COM.
1
Partial Fold
Fuse
Microswitch C-H
COM
NO
NC
Threshold / Alarm
Microswitch
WH(18)
WH(18)
BU(18)
BK(20)
RD(18)
RD(18)
GN(20)
DK. BU(18)
GN(18)
GN(18)
BK(16) BK(16)
WH(18)
WH(18)
WH(20)
RD(18)
22166A
31797AGY/RD(18)
33231A
945-0500NA
945-0500NA
945-0500NA
33255A
33659A
RD(18)
)81
(D
R
RD(18)
RD(18)
BK(18)
RD(18)
BK(18)
GN(20)
BK(18)
)81(KB
4
5A
3
3
0
1
3
9
9A
3
3
0
1
3
)81(KB
)81(KB
)81(KB
)
8
1
(KB
)81(DR
)81
(KB
RD(18)
BK(18)
RD(18)
BK(18)
4
GN(18)
GN(18)
BK(18)
WH(18)
GN(18)
N.O.
N.C.
.
M
O
C
C-H
COM NO
NC
N.O.
N.C.
.
MO
C
3
+-
-
E
GN(20)
+
BU(20)
BN(20)
BK(20)
VT(20)
VT(20)
WH(20)
VT(20)
BU(20)
BK(20)
RD(22)
BK(22)
21
5
3
64
ORANGE(18)
WHITE(18)
RED(18)
BLUE(18)
4
GREEN(18)
5
BLACK(18)
6
3
2
1
COLORNO.
6-COND WIRE CODE
FUSE HOLDER(16)
WHITE(18)
NOT USED
NOT USED
NOT USED
NOT USED
6
5
4
3
2
1
COLORNO.
9-COND WIRE CODE
GREEN(18)
NOT USED
NOT USED
9
8
7
GY/RD(18) VEHICLE SECURE +12V INPUT
LIFT NOT STOWED GROUND SIGNAL
NOT USED
NOT USED
NOT USED
NOT USED
6
5
4
3
2
1
COLORNO.
9-COND WIRE CODE
LIFT STOWED GROUND SIGNAL
NOT USED
NOT USED
9
8
7
123
456
789
2
11
2
1
2
2
1
1
2
21
1
2
21
RD(20)
BU(20)
BK(20)
NC
COM
NO
Bridging
Microswitch
NC
COM
NO
123
456
789
45
12
6
3
32519A
33775A
WH(18)
WH(18)
GN(18)
LT. BU / GN(18)
GN(10)
Redundant
Power
Relay
Fold
Relay
OR(20)
SOLID BUS
SOLID BUS
BU(20)
Fold/Unfold
Switch
WH
BK(18)
BU(18) WH(18)
BK(20)
GN(20) RD(20)
L
G
Up/Down
Switch
Switch Box
(As Viewed From Terminal
Side of Switch)
NOT USED
BLACK(20) - 6 COND. (DOWN)
RED(20) - 6 COND. (UNFOLD)
GREEN(20) - 6 COND. (FOLD)
ORANGE(20) - 6 COND. (UP)
BLUE(20) - 6 COND. (-)
WHITE(20) - 6 COND. (+)
6
5
4
3
2
1
COLORNO.
7-COND WIRE CODE
7
NOT USED
WHITE(18)
RED(18)
GREEN(18)
TAN / ORANGE(18)
GREEN(20)
BLACK(20) & BLACK(20)
6
5
4
3
2
1
COLORNO.
7-COND WIRE CODE
7
21
543
76
C-H
COM
NO
NC
Stow
Interlock
Microswitch
Lift
Ready
LED
BK(20)
GN(20)
VT(20)
VT(20)
WH(20)
N.O.
N.C.
C-H
COM NO
NC
N.O.
N.C.
COM.
COM.
33377RA - Rear Pump
33377FA - Front Pump
TAN/ORANGE(18)
BLACK(18)
RED(18)
DK. BLUE(18)
4
GREEN(18)
5
BROWN(20)
6
3
2
1
COLORNO.
6-COND WIRE CODE
21
5
3
64
BLACK(20)
BLACK(20)
BLACK(18)
WHITE(18)
4
NOT USED
5
RED(18)
6
3
2
1
COLORNO.
6-COND WIRE CODE
45
12
6
3
VIOLET(20)
BLACK(20)
BLUE(20)
BROWN(20)
4
NOT USED
5
WHITE(20)
6
3
2
1
COLORNO.
6-COND WIRE CODE
1
2
1
2
RD(20)
BU(20)
BK(20)
BU(20)
BK(20) 1
2
33689A
3421
3421
1
2
3
1
2
3
1
2
1
2
1
2
Lift Power
Switch
Down
Fuse
Fold
Up/Fold
Solenoid
+
-
87a
86
87
30
85
87a
86
87
30
GN(20)
85
GN(20)
GN(20)
LT. BU / GN(18)
LIFT STOWED / NOT STOWED GROUND SIGNAL
(Located in cavity #5 or #9 - see chart above)
31798A YL/LT. BU(18)
NOTES:
1) JUNCTIONS ONLY OCCUR AT
MARKED INTERSECTIONS.
1
345
67
2
12
345
67
1
345
67
2
RD(18)
RD(18)
RD(18)
RD(18)
RD(18)
OR(12)
Light
Relay
85
87a
86
87
30
BK(18)
OR(12)OR(12)
OR(12)
Fuse
87a
86
87
30
85
FS7
FS4
BK(18)
RD(18)
Lift Power LED
+-
Page 16

Page 17
Orifice
Pump Side
Cylinder
BACKUP
PUMP
2500
PSI
Down
Valve
1900
PSI
PUMP
Opposite
Pump
Cylinder
M
Orifice
800
PSI
Secondary
Valve
Folding
Relief Valve
Lifting
Relief Valve
Fixed Displacement
Pump
Vented Reservoir
Backup Pump
Single Acting Cylinder
Check Valve
Manual
Shutoff Valve
2 Way 2 Position
Solenoid Valve
Pressure Compensated
Flow Control
Relief Valve
Description Symbol Description Symbol
Filter Screen
Unfold Orifice
M
Pump Motor
Hydraulic Port
Hydraulic Schematic

Page 18
Hydraulics Parts List
Item Qty. Description Part #
1 1 Pump Assembly (M-268-0114) 120G / 12V / Dual Relief 32858-12V
2 1 Solenoid, 4-Post - Trombetta (Flat Mount) 31374
3 1 Motor, Pump - 12 Volt - Low RPM 29690
4 1 Valve Assembly, “Dual Relief" (complete) 31120K
5 1 Cartridge (only), “Dual Relief" Valve - (shown below) 31121
6 2 Coil (only) - (shown below) 31122
7 1 Valve Assembly, “Down” (complete) 31348K
8 1 Cartridge (only), “Down” Valve - (shown below) 26078
9 3 Screw, 1/4-20 x 2-1/4", Allen Head 26080
10 1 Hand Pump (Backup) with O-Rings (Item 11) 26074
11 4 O-Ring (only), Hand Pump Mounting 17351
12 1 Clamp, Reservoir - H-48 (M259) 17069
13 1 Reservoir, Hydraulic Fluid 30160
14 1 Cap, Reservoir Filler - Screw On 30167
15 1 Fitting, 90° - 1/8" NPT x 1/8" Barb - Plastic 87563
16 1 Connector, Plastic “Y”, 1/8” O.D. 18877
17 1 Hose, Thermal Plastic - Black, 1/8" I.D.
23742R* (6")
18 1 Handle with Grip 17206A
19 1 Fitting, Male 7-16-20 SAE O-Ring to Male 7/16-20 JIC 37° 24504
20 1 Elbow, 7/16-20 JIC 37 Female Swivel (1) - 7/16-20 JIC 37° Male (2) 26579
21 1 Hose Assembly, 1/8" (Opposite-Pump-Side) 16004A-086
22 1 Hose Assembly, 1/8" (Pump-Side) 16004A-046
23 2 Elbow, 90°, 7/16-20 SAE O-Ring Male - 7/16-20 JIC 37° Male, Orifice 26667
24 2 Cylinder ✓
C1514.3-0408N
25 2 Elbow, 90°, 1/4 NPT Male to 1/4" Barbed 15150
26 1 Hose, Thermal Plastic - Black, 1/8" I.D.
23742R* (68")
27 1 Hose, Thermal Plastic - Black, 1/8" I.D.
23742R* (30")
28 1
Diode Assembly, Up Solenoid 73906A
29 1 Kit, Hydraulic Port Service Cap 27049K
✓Seal Kits: If repairing a cylinder, order Seal Kit #1500-0500P.
* Raw material items ordered and priced per inch (order specified length).
5
Cartridge
#31121
6
Coil
#31122
“Dual Relief” Valve
(complete)
4
8
Cartridge
#26078
6
Coil
#31122
“Down” Valve
(complete) 7
Hydraulic Fluid
When adding or changing
hydraulic fluid, use Braun
32840-QT (Exxon®Univis
HVI 26) hydraulic fluid (do
not mix with Dextron III or
other hydraulic fluids).