GVL Global 02 Series Service Manual
Service Manual for:
<KA
Global
HZg^Zh
Wheelchair Lifts
02
33222
"Providing Access to the World"
International Corporate Hdqrs: P.O. Box 310 Winamac, IN 46996 USA
1-800-THE LIFT
34179 Rev. A
December
2007
®
(574) 946-6153 FAX: (574) 946-4670
Patent #5,261,779
Patent #5,261,779
Patent #6,065,924
Patent #6,065,924
Patent #6,238,169
Patent #6,238,169
Patent #6,464,447
Patent #6,464,447
Patent #6,599,079
Patent #6,599,079
Patent #6,739,824
Patent #6,739,824
Patent #6,837,670
Patent #6,837,670
Patents Pending
Patents Pending
A
R N I N G
W
Man
ual
®
®
Read manual
before installing
or servicing lift.
Failure to do so
may result in
serious bodily
injury and/or
property damage.
Braun GVL Series
Braun GVL Series
GVL936IB3144
e5*72/245*95/54*0110*00
1-800-THE LIFT™
BRAUNLIFT.COM™
The Braun Corporation
Not For Sale in U.S. - For Export Only
Max. Lifting Capacity - 800 lbs.
PATEN T
PENDING-
5,261,779-6,065,924-6,238,169-6,46
4,447-6,599,079-6,692,217-6,739,824
MFG DATE
62 14CF
PUMP CODE CYLINDER
02-00025
SERIAL NUMBER
06/06/07
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
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 Quick Reference
Installation Sheet for installation instructions, operating instructions and maintenance
procedures.
Braun Global 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
Warranty and Registration Instructions
Immediately upon receiving the lift, examine the
unit for any damage. Notify the carrier at once
Series No. Pump Code
Serial No.Model No. Cylinder Code
with any claims.
GVL936IB3144 02-00025 62 14CF
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 warranty is provided on the back cover of this manual.
The warranty cards must be processed to
Sample Warranty/Registration Card
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 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 information 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.
Model No.
Sample Serial No./Series No. Identification Tag
Series No.
Serial No.
Pump Code
Cylinder Code
Date of Manufacture
Contents
Troubleshooting and Maintenance
Lift Terminology............................................................. 2
Switch and Sensor Locations ..................................... 3
Platform Fold Pressure Adjustment ............................ 4
Platform Angle Adjustment ......................................5-6
Tower Microswitch Adjustment .................................... 7
Lubrication Diagram ...................................................... 8
Maintenance and Lubrication Schedule................. 9-12
Lift Electrical Schematic ............................................ 13
Lift Wiring Diagram .................................................... 14
Hydraulics
Hydraulic Schematic .................................................. 15
Hydraulics Parts List .................................................. 16
Hydraulics Diagram .................................................... 17
Repair Parts
Pump Module
Pump Module Parts List ....................................... 18
Pump Module Diagram ......................................... 19
Lift Exploded Views and Parts Lists
Base Plate Assembly .......................................20-22
Top Parallel Arm Assembly ................................... 23
Bottom Parallel Arm Assembly ........................ 24-25
Hydraulic Cylinder Assembly - Main .................... 26
Vertical Arm Assembly .....................................27-28
Handrail Assembly ................................................. 29
Platform Assembly - Inboard ................................30-32
Platform Assembly - Outboard .............................33-35
Inner Roll Stop Assembly .................................36-38
Page 1
Lift Terminology
Hand-Held
Pendant
Control
D
OL
F
)
D
IN
L
(
O
UNF
T)
(OU
UP
DOWN
Base Plate
Bottom Parallel
Arms (2)
Pump Module
(Rear)
Towers (2)
Lift-Tite™
Latches (2)
Top Parallel Arms (2)
Main Cylinders (2)
Adjustable Quiet-Ride Stow Blocks (2)
Unfold Assist Compression Springs (2)
Vertical Arm Covers (4)
Handrails (2)
Opposite Pump Side
Vertical Arm
Inner Roll Stop
Saddle (2)
Upper Fold Arm (2)
Lower Fold Arm (2)
Inboard
Left
Inboard
Platform
Outboard
Platform
Pump Side
Vertical Arm
Platform Side Plates (2)
Outer Barrier
Right
Outboard
Page 2
*Partial Fold
Microswitch Assy.
32735RA
D
FOL
D
(IN)
UNFOL
T)
(OU
UP
DOWN
Switch and Sensor Locations
*Up & Unfold
Microswitch Assy.
975-3121A
*Up Microswitch
*Unfold
Microswitch
Inboard
Left
Right
Outboard
*Note: Mirror image for
right (front) pump lifts.
Page 3
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. 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.
DO NOT adjust this valve!
(Located on back side of pump block)
Note: Secure adjustment
screw and tighten hex
nut following adjustment.
Platform Fold
Adjustment
Allen Screw
Page 4
Platform Angle Adjustment
Adjustments to platform angle
may be required. 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 platform angle must 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 A.
Note: The outboard end of the
platform must contact the ground
first to ensure the spring-loaded
outer barrier unfolds fully. See
Figure B.
Adjustment Procedures:
Adjustment Allen screws are
provided on each side of the lift
platform for adjusting the platform
angle. See Figure C. Turn the
adjustment screw clockwise to
raise the outboard end of the
platform. Turn the adjustment
screw counterclockwise to
lower the outboard end of the
platform. Note: Both adjustment screws must be adjusted
equally. Ensure both stop
blocks are making full contact
with the vertical arms. Apply
®
Loctite
following adjustment.
to adjustment screws
Angle A
equals
Angle B.
Figure A
✓
A
Floor
Level
Shim
B
Inboard
Approximately
1" Clearance
Platform Angle Adjustment Screw Inside edge of vertical arms
Outboard
Barrier
must
unfold
fully.
Figure B
Floor Level Adjustment:
Following platform angle adjustment, set platform floor level
positioning as detailed in Tower
Microswitch Adjustments.
Figure C
Stop Block
Page 5
Platform Angle Adjustment
W
A
RNING
Automatic Floor Level Positioning: GVL936
Series lifts feature automatic floor level positioning.
This feature eliminates the need for the lift operator
to position and stop the platform at vehicle floor
level when unfolding the platform from the stowed
position and when raising the platform from ground
level.
Floor Level Adjustments: Tower 1 (Unfold) and
Tower 2 (Up) microswitches control platform and
bridge plate positioning. Ensure floor level adjustments are correct as outlined on page 7. Adjust
microswitches as needed only.
Floor Level Guidelines: When adjusting microswitches, bridge plate positioning and platform stop
block positioning must be viewed. A combination of
adjustments may be required to achieve a proper
balance. See Bridge Plate Positioning and Stop
Blocks below.
Platform Angle
Adjustment Screw
Inside edge of
vertical arms
Platform Angle Adjustments: Check platform
angle as outlined on page 5 when adjusting microswitches.
Adjustment Verification: Following the outlined
adjustment procedures, check floor level position
from stow position and from below floor level posi-
tion. The platform must stop automatically at floor
level when unfolding from stow position and when
raising from below floor level position. From the
stowed position, press the UNFOLD switch and hold
until the platform stops
at floor level. Once
stopped, ensure the
lift will fold when the
pendant FOLD switch
is pressed. Adjust the
switches as needed
per the guidelines in
Figure E.
Bridge plate resting solidly on
OK
base plate.
Improper microswitch
adjustment may
result in serious
bodily injury and/or
property damage.
A
Stop Block
Stop Blocks: The platform stop blocks
(one per side) must be making full contact
with the vertical arms when the platform is at
floor level. See Photo A. Improper adjust-
ment of screw positioning can result in
lift damage.
Bridge Plate Positioning: The bridge
plate should rest solidly on the base plate.
There should be a smooth (level) transition
between the platform, bridge plate and the
base plate. Refer to Photos B and C.
WRONG
B
Platform and bridge plate level.
Gap not permitted.
C
Platform too low.
Page 6
Tower Microswitch Adjustment
TOWER2TOWER
1
32942
Figure D
Note: Review
adjustment
procedures
below and
adjust as
needed only.
Note: Left
(rear) pump
lift depicted.
Right (front)
pump lift is
a mirrored
image.
Microswitch Adjustment Instructions:
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.
Tower 2
(Up)
Microswitch
Turn adjustment
screw counterclockwise to stop
the platform raise
function sooner.
Turn adjustment
screw clockwise
to allow the
platform to raise
further.
Tower 1
(Unfold)
Microswitch
Turn adjustment
TOWER
2
TOWER
1
32942
screw clockwise to stop the
platform unfold
function sooner.
Turn adjustment
screw counterclockwise to allow the platform
Figure E
to unfold further.
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 clockwise 3
full turns.
3. Press pendant UNFOLD switch (continue
pressing switch until platform stops unfolding).
4. When platform stops unfolding, turn switch
adjustment screw counterclockwise while
pressing the pendant UNFOLD switch.
Platform position will change. Repeat
adjustment until criteria below is met.
Proper Adjustment Criteria:
• The bridge plate should rest solidly on
the base plate (minimum of 1" overlap).
There should be a smooth (level) transition between the platform, bridge plate
and the base plate. See Photos B and C.
• The platform stop blocks (one per side)
must be making full contact with the
vertical arms when the platform is at floor
level. See Photo A.
2. Turn switch adjustment screw counterclockwise 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. Repeat adjustment to meet
criteria listed in Tower 1 Switch "Proper
Adjustment Criteria" at left.
Adjustment Verification
Following adjustment procedures, verify
proper adjustment as detailed at left. Adjust the switches as needed per the guidelines in Photo A.
Page 7
Parallel Arm
Pivot Pin Bearings (16)
™
OLD
F
)
D
N
I
(
OL
UNF
UT)
O
(
UP
N
OW
D
Lift-Tite
Dampening Springs
Latch
(2 springs - 4 Points) LO
Saddle Support Bearings (8)
LO
Upper Fold Arm Pivot Points (2)
LO
Upper and Lower Fold Arm
Contact Area (2)
LG
Lower Fold Arm Pivot Points (2)
LO
Platform Fold Link Bearings (4)
LO
Lift-Tite™ Latch Rollers (2)
LO
Platform Pivot Pin Bearings (4)
LO
Maintenance and Lubrication
Lubrication Diagram
™
Lift-Tite
(Tower Pivot Points - 2)
LO
Latches
LO
Saddle Bearing
Hydraulic Cylinder
Pivot Bushings (8)
LO
Buttons (4)
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
Gear Link Assembly
Bearings (4)
LO
Platform Side Plate Slots (2)
LG
Outer Barrier
Arm Slots (2)
LG
Outer Barrier
Latch Foot Bearings (2)
LO
Platform Fold Gear Rack Bearings (4)
LG
Outboard Platform Bearings (2)
See the Maintenance/Lubrication Schedule for recommended applications per number of cycles.
Specified (recommended) Available Braun
Lubricant Type Lubricant Amount Part No.
LO - Light Oil
DE - Door-Ease
LG - Light Grease
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)
Light Grease Lubriplate 14 oz.
(Multipurpose) Can
Page 8
LG
Outer Barrier Arm
Pivot Points (2)
LO
15807
15806
15805
W
A
RNING
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.
Braun dual parallel arm lifts are equipped with hardened 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
applying 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 dur-
ing assembly procedures.
When these components
are replaced, grease must
be applied during installation procedures. Specified
lubricants are available from
The Braun Corporation.
Maintenance and
lubrication procedures
must be performed as
specified by an
authorized service
All listed inspection, lubrica-
tion and maintenance procedures should be repeated
at “750 cycle” intervals
following the scheduled
“4500 Cycles” maintenance.
technician. Failure to
do so may result in
serious bodily injury
and/or property
damage.
These intervals are a general guideline for scheduling
maintenance procedures and will vary according to lift
use and conditions. Lifts exposed to severe conditions
(weather, environment, contamination, heavy usage,
etc.) may require inspection and maintenance procedures to be performed more often than specified.
Discontinue lift use immediately if maintenance and
lubrication procedures are not properly performed, or if
there is any sign of wear, damage or improper operation.
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.
750
Cycles
continued
Outer barrier arm pivot points (2)
Outer barrier arm slots (2)
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)
™
Lift-Tite
points (2 springs - 4 points)
Inspect Lift-Tite
or damage (bent, deformed or misaligned), positive
securement and proper operation
Inspect outer barrier for proper operation
latch gas (dampening) spring pivot
™
latches and gas springs for wear
Apply Light Oil - See Lubrication Diagram
Apply Light Grease - 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
Apply Light Oil - See Lubrication Diagram
Resecure, replace damaged parts or otherwise
correct as needed. Note: Apply Light Grease to
™
Lift-Tite
Correct or replace damaged parts.
latch tower pivot point if replacing latch.
Page 9
continued
Maintenance and Lubrication Schedule
Inspect outboard barrier feet for proper operation,
positive securement and detached or missing
torsion spring
Correct, replace damaged parts and/or relubricate.
750
Cycles
Inspect platform fold gear rack and gear link assembly teeth for foreign objects, wear or damage (bent, deformed or misaligned), positive
securement and proper operation
Inspect lift for wear, damage or any abnormal
condition
Inspect lift for rattles
Perform all procedures listed in previous sections also
Outer barrier latch foot bearings (2)
Upper/lower fold arm contact areas (2)
Platform pivot pin bearings (4)
Upper fold arm pivot points (2)
Lower fold arm pivot points (2)
Inner roll stop lever bearings (2)
Inner roll stop lever slot (2)
Remove foreign objects, replace damaged parts
and resecure as needed
Correct as needed.
Correct as needed.
Apply Light Oil - See Lubrication Diagram
Apply Grease (synthetic) to contact areas between upper/lower 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
1500
Cycles
continued
Saddle support bearings (8)
Parallel arm pivot pin bearings (16)
Handrail pivot pins (2)
Hydraulic cylinder pivot bushings (8)
Platform side plate slots (2)
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. Inner roll stop should just rest
on top surface of the base plate.
• Positive securement (both ends)
Inspect handrail components for wear or damage,
and for proper operation
Inspect microswitches for securement and proper
adjustment.
Make sure lift operates smoothly
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 Grease - See Lubrication Diagram
Correct, replace damaged parts and/or relubricate.
Resecure, replace or correct as needed. See
Platform Angle Instructions and Tower Microswitch Adjustment Instructions.
Replace damaged parts.
Resecure, replace or adjust as needed. See
Tower Microswitch Adjustment Instructions.
Realign towers and vertical arms. Lubricate or
correct as needed.
Page 10
Maintenance and Lubrication Schedule
continued
1500
Cycles
Inspect external snap rings / e-clips:
• Upper fold arms (4)
• Lower fold arms (2)
• Inner roll stop lever bracket pins (2)
• Lift-Tite™ latch gas (dampening) springs (4)
• Gear link assembly (4)
• Lift-Tite™ rollers (2)
• Outer barrier latch foot pins (2)
• Rear bumper cable roller (1) - if equipped
Inspect platform fold link rollers and bearings
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
• Circuit breaker, power switch and solenoids
for securement or damage
Perform all procedures listed in previous section also
Inspect cotter pins on platform pivot pins (2)
Resecure or replace if needed.
Resecure, replace or correct as needed.
Note: Apply Loctite® to threads if needed.
Resecure, replace or correct as needed.
Resecure, replace or correct as needed
4500
Cycles
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 screws (8)
Inspect platform pivot pins, bearings and vertical
arms for wear, damage and positive securement
Inspect vertical arms, handrails and pivot pins for
visible wear or damage
Inspect upper/lower fold arms, saddle, saddle
support and associated pivot pins, bushings, and
bearings for visible wear or damage
Inspect gas springs (cylinders - 2) for wear or damage, proper operation and positive securement
Inspect saddle bearing buttons (4)
Inspect vertical arm plastic covers
Use Braun 32840-QT (Exxon® Univis HVI 26)
hydraulic 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 procedures.
Replace damaged parts and relubricate if needed
Replace if needed.
Tighten, replace or correct as needed
Apply Door-Ease or replace if needed. See Lubrication Diagram.
Resecure or replace if needed.
continued
Inspect power cable
Resecure, repair or replace if needed.
Page 11
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