Invacare XTERRA GT User manual

Service Manual
DEALER: KEEP THIS MANUAL. THE PROCEDURES IN
THIS MANUAL MUST BE PERFORMED BY A QUALI-
FIED TECHNICIAN ONLY
Invacare® XterraGT
Wheelchair

XTERRA GT 2Part No. 1110516
WARNING
WARNING
THE PROCEDURES IN THIS MANUAL SHOULD ONLY BE
PERFORMED BY A QUALIFIED SERVICE TECHNICIAN.
DO NOT SERVICE OR OPERATE THIS EQUIPMENT
WITHOUT FIRST READING AND UNDERSTANDING THIS
MANUAL AND THE OWNERS MANUAL SUPPLIED WITH
THE WHEELCHAIR. IF YOU ARE UNABLE TO
UNDERSTAND THE WARNINGS, CAUTIONS, AND
INSTRUCTIONS, CONTACT INVACARE TECHNICAL
SUPPORT BEFORE ATTEMPTING TO SERVICE OR
OPERATE THIS EQUIPMENT - OTHERWISE INJURY OR
DAMAGE MAY RESULT.
SPECIAL NOTES
WARNING/CAUTION notices as used in this manual apply to hazards or unsafe
practices hich could result in personal injury or property damage.
NOTICE
THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO CHANGE
WITHOUT NOTICE.
WHEELCHAIR USER
As a manufacturer of heelchairs, Invacare endeavors to supply a ide variety of heelchairs
to meet many needs of the end user. Ho ever, final selection of the type of heelchair to be
used by an individual rests solely ith the user and his/her healthcare professional capable of
making such a selection.
WHEELCHAIR TIE-DOWN RESTRAINTS AND SEAT POSITIONING STRAPS
Invacare recommends that heelchair users NOT be transported in vehicles of any kind hile
in heelchairs. As of this date, the Department of Transportation has not approved any tie-
do n systems for transportation of a user hile in a heelchair, in a moving vehicle of any type.
It is Invacares position that users of heelchairs should be transferred into appropriate seating
in vehicles for transportation and use be made of the restraints made available by the auto
industry. Invacare cannot and does not recommend any heelchair transportation systems.
AS REGARDS TO RESTRAINTS (SEAT POSITIONING STRAPS) - IT IS THE OBLI-
GATION OF THE DME DEALER, THERAPISTS AND OTHER HEALTHCARE PRO-
FESSIONALS TO DETERMINE IF A SEATING POSITIONING STRAP IS REQUIRED
TO ENSURE THE SAFE OPERATION OF THIS EQUIPMENT BY THE USER. SERI-
OUS INJURY CAN OCCUR IN THE EVENT OF A FALL FROM A WHEELCHAIR.
SAVE THESE INSTRUCTIONS
WARNING
SPECIAL NOTES

Part No. 1110516 3XTERRA GT
TABLE OF CONTENTS
TABLE OF CONTENTS
TABLE OF CONTENTS
SPECIAL NOTES ........................................................................................................... 2
LABEL LOCATIONS ..................................................................................................... 5
SPECIFICATIONS......................................................................................................... 6
SECTION 1 - GENERAL GUIDELINES ...................................................................... 7
SECTION 2 -TROUBLESHOOTING .......................................................................... 9
FIELD LOAD TEST .......................................................................................................................................9
USING HYDROMETER TO CHECK BATTERY CELLS ............................................................... 10
MOTOR TESTING .................................................................................................................................... 11
MOTOR BRUSH INSPECTION ............................................................................................................ 11
ELECTROMECHANICAL PARKING BRAKE TESTING .............................................................. 12
SECTION 3 - HARDWARE TORQUE SPECIFICATIONS ................................... 13
SECTION 4 - ARMS ..................................................................................................... 17
REPLACING ARMREST PADS - VAN STYLE SEAT....................................................................... 17
REPLACING VAN STYLE SEAT ARMREST PLATE........................................................................ 17
FLIP BACK ARMRESTS ............................................................................................................................ 18
SECTION 5 - BACK ..................................................................................................... 20
REPLACING SEAT POSITIONING STRAP....................................................................................... 20
REMOVING/INSTALLING BACK UPHOLSTERY .......................................................................... 21
CHANGING BACK HEIGHT ................................................................................................................ 2
BACK ANGLE ADJUSTMENT .............................................................................................................. 24
SECTION 6 - SEAT FRAME ....................................................................................... 26
REMOVING/INSTALLING SEAT FRAME FOR 14 AND 15-INCH SEAT WIDTHS............ 26
REMOVING/INSTALLING SEAT FRAME FOR 16-INCH SEAT WIDTHS ............................. 29
REMOVING/INSTALLING SEAT FRAME FOR 17 AND 18-INCH SEAT WIDTHS ........... 2
REMOVING/INSTALLING SEAT FRAME FOR 19 AND 20-INCH SEAT WIDTHS ........... 5
CHANGING SEAT DEPTH.................................................................................................................... 8
REMOVING/INSTALLING CJ BACK BRACKETS .......................................................................... 40
REMOVING/INSTALLING SEAT PAN ............................................................................................... 41
CHANGING SEAT WIDTH OF FIXED SEAT FRAMES
(16, 17, 18, 19, AND 20-INCH WIDE) .......................................................................................... 45
CHANGING SEAT WIDTH OF ADJUSTABLE SEAT FRAMES
(14, 15, AND 16-INCH WIDE) ........................................................................................................ 46
COMPONENT REPLACEMENT FOR 14-INCH, 15-INCH, AND
16-INCH SEAT FRAMES ..................................................................................................................... 48
INSTALLING/REMOVING VAN STYLE SEAT/SEAT FRAME ASSEMBLY
FROM FLIP-UP SEAT PLATE .............................................................................................................. 50
INSTALLING/REMOVING VAN STYLE SEAT FROM SEAT FRAME ASSEMBLY ................. 51
SECTION 7 - BASE FRAME ....................................................................................... 52
REMOVING/INSTALLING FLIP-UP PLATE....................................................................................... 52
REMOVING/INSTALLING ADJUSTMENT BRACKET.................................................................. 54
REMOVING/INSTALLING FRONT AND REAR SHROUDS ...................................................... 55
REMOVING/INSTALLING TORSION BAR....................................................................................... 56
REMOVING/INSTALLING PORT BRACKET ................................................................................... 57
REMOVING/INSTALLING BATTERY TRAY .................................................................................... 58
REPLACING COMPONENTS OF THE FLIP-UP SEAT PLATE
AND/OR CHANGING FROM o TILT TO 0o TILT ................................................................... 59

XTERRA GT 4Part No. 1110516
TABLE OF CONTENTS
TABLE OF CONTENTS (CONTINUED)
TABLE OF CONTENTS
SECTION 8 - BATTERIES .......................................................................................... 59
REMOVING/INSTALLING BATTERIES .......................................................................................... 59
DISCONNECTING BATTERY CABLES ......................................................................................... 62
CONNECTING BATTERY CABLES................................................................................................ 64
WHEN TO CHARGE BATTERIES ................................................................................................... 69
CHARGING BATTERIES ..................................................................................................................... 69
SECTION 9 - ELECTRONICS ................................................................................... 72
REMOVING/INSTALLING MKIV-A WIRING HARNESS ......................................................... 72
REMOVING/INSTALLING MKIV-RII WIRING HARNESS....................................................... 74
REMOVING/INSTALLING MKIV-A JOYSTICK ........................................................................... 76
REMOVING/INSTALLING MKIV-RII JOYSTICK ......................................................................... 79
REMOVING/INSTALLING THE MKIV-A CONTROLLER........................................................ 81
REMOVING/INSTALLING THE MKIV-RII CONTROLLER ..................................................... 8
SECTION 10 - MOTORS/WHEELS ........................................................................... 87
REMOVING/INSTALLING DRIVE WHEELS ................................................................................. 87
REMOVING/INSTALLING DRIVE WHEEL HUB ........................................................................ 87
REMOVING/INSTALLING MOTOR ................................................................................................ 88
REMOVING/INSTALLING MOTOR/GEARBOX, SUSPENSION ARM
ASSEMBLY AND SUSPENSION SPRING HARDWARE ................................................... 91
REMOVING/INSTALLING CASTERS .............................................................................................. 94
NOTES........................................................................................................................... 98
WARRANTY ................................................................................................................ 99

Part No. 1110516 5XTERRA GT
S
P
E
C
I
F
I
C
A
T
I
O
N
S
LABEL LOCATIONS
LABEL LOCATIONS
LABEL LOCATIONS
Battery Removing/Installing Label
Seat Prop
Label
Pinch Point
Label
(Note: Located on the
Opposite side of seat
prop label)
Pinch Point
Label
Pinch Point
Label

XTERRA GT 6Part No. 1110516
Seat Width Range: *14 to 20-inches
Seat Depth Range: *14 to 20-inches
Back Height Range:*14 to 22-inches
Seat-to-Floor (approximate)
18-inches @ o
17.1/4-inches @ 0o
Overall Width of Base:
(/o joystick) 25-inches
Overall Height: 6-1/4-inches
Overall Length: 6-1/2-inches (std)
40-inches (max.)
Weight**
4-Pole Motor
Without Batteries: 179 lbs.
With Batteries:
With ASBA Seat 280 lbs.
With Van Style Seat 300 lbs.
Drive Wheels/Tires:
(Foam Filled or Pneumatic)
16 x -inches
(Pneumatic -std)
16 x -inches
(foam filled - opt)
Battery Type: 22NF batteries
PHYSICAL DIMENSIONS
Casters /Precision
Sealed Bearings
Semi-Pneumatic
Front: 8 x 2 - inches
Rear: 6 x 2 - inches
Footrests: Telescoping Front Rigging Supports,
Swing-Away, Heavy Duty, 2-in. and 4-in. longer
Pivot Slide Tube, Cage
Armrests: Flip Back, Fixed or Adjustable Height
(Desk and Full Length)
**A.S.B.A. - Seat Angle Adjustment: Adjust-
able (0o and o)
A.S.B.A. - Back Angle Adjustment: Adjust-
able (80o to 100o in 5o increments)
A.S.B.A. - Seat Cushion: Cushion (Optional)
A.S.B.A. - Chair Upholstery Options: Nylon
or Vinyl.
Van Style Seat - Cloth or Vinyl
Operating Temperature:
0 - 122 degrees F
Storage Temperature:
10 - 152 degrees F
Curb Climbing: 2-inches
Weight Limitations: 250 lbs.
Range will vary with battery conditions, surface, terrain
and operators weight.
PERFORMANCE
RATING SPEED RANGE
25 LBS Up to 7.5 Up to 21
M.P.H. Miles
Back Angle Range: 80o to 100o
(in 5o increments)
* in 1 inch increments
** measured without front riggings
NO E: ** A.S.B.A. stands for Adjustable Seat and
Back Angle.
SPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONS

Part No. 1110516 7XTERRA GT
GENERAL G IDELINESSECTION 1
This Section Includes the Following:
Repair or Service Information
Operating Information
REPAIR OR SERVICE INFORMATION
Set-up of the Electronic Control Unit is to be performed ONLY by individuals
certified by Invacare. The final tuning adjustments of the controller may
affect other activities of the heelchair. Damage to the equipment could
occur under these circumstances. The arranty is void if non-certified indi-
viduals perform any ork on these units.
OPERATING INFORMATION
GENERAL WARNINGS
Performance adjustments should only be made by professionals of the
healthcare field or persons fully conversant ith this process and the driver's
capabilities. Incorrect settings could cause injury to the driver, bystanders,
damage to the chair and to surrounding property.
After the heelchair has been set-up, check to make sure that the heelchair
performs to the specifications entered during the set-up procedure. If the
heelchair does NOT perform to specifications, turn the heelchair OFF
immediately and reenter set-up specifications. Repeat this procedure until the
heelchair performs to specifications.
DO NOT operate on roads, streets or high ays.
DO NOT climb, go up or do n ramps or traverse slopes greater than 9o.
DO NOT attempt to move up or do n an incline ith a ater, ice or oil film.
DO NOT attempt to drive over curbs or obstacles. Doing so may cause your
heelchair to turn over and cause bodily harm or damage to the chair.
DO NOT use parts, accessories, or adapters other than those authorized by
Invacare.
DO NOT leave the po er button ON hen entering or exiting the heel-
chair.
DO NOT stand on the frame of the heelchair.
DO NOT use the footplates as a platform. When getting in or out of the
heelchair, make sure that the footplates are in the up ard position or s ing
footrests to ards the outside of the chair.
ALWAYS ear your seat positioning strap.
TIRE PRESSURE
DO NOT use your heelchair unless it has the proper tire pressure (P.S.I.).
DO NOT over inflate the tires. Failure to follo these suggestions may cause
the tire to explode and cause bodily harm. The recommended tire pressure is
listed on the side all of the tire.
SPECIFICATIONS

XTERRA GT 8Part No. 1110516
GENERAL G IDELINESSECTION 1
GENERAL WARNINGS (CONTINUED)
ELECTRICAL
Grounding Instructions:
DO NOT, under any circumstances, cut or remove the round grounding
prong from any plug used ith or for Invacare products. Some devices are
equipped ith three-prong (grounding) plugs for protection against possible
shock hazards. Where a t o-prong all receptacle is encountered, it is the
personal responsibility and obligation of the customer to contact a qualified
electrician and have the t o-prong receptacle replaced ith a properly
grounded three-prong all receptacle in accordance ith the National Elec-
trical Code. If you must use an extension cord, use ONLY a three- ire exten-
sion cord having the same or higher electrical rating as the device being
connected. In addition, Invacare has placed RED/ORANGE WARNING
TAGS on some equipment. DO NOT remove these tags.
BATTERIES
The arranty and performance specifications contained in this manual are
based on the use of deep cycle gel cell or sealed lead acid batteries. Invacare
strongly recommends their use as the po er source for this unit.
Carefully read battery/battery charger information prior to installing, servicing
or operating your heelchair.
RAIN TEST
INVACARE has tested its po er heelchairs in accordance ith ISO 7176
Rain Test. This design provides the user or his/her attendant time to remove
the po er heelchair from a rain storm and retain heelchair operation.
DO NOT leave po er heelchair in a rain storm of any kind.
DO NOT use po er heelchair in a sho er.
DO NOT leave po er heelchair in a damp area for extended period of time.
Direct exposure to rain or dampness ill cause the chair to malfunction electri-
cally and mechanically and may cause the chair to rust prematurely.
Check to ensure that the battery covers are secured in place, joystick boot is
NOT torn or cracked here ater can enter and that all electrical connections
are secure at all times.
DO NOT use the joystick if the boot is torn or cracked. If the joystick boot
becomes torn or cracked, replace IMMEDIATELY.
WEIGHT LIMITATION
The eight limitation for the Xterra GT heelchair is 250 lbs.
WEIGHT TRAINING
Invacare DOES NOT recommend the use of its heelchairs as a eight
training apparatus. Invacare heelchairs have NOT been designed or tested
as a seat for any kind of eight training. If occupant uses said heelchair as a
eight training apparatus, INVACARE SHALL NOT BE LIABLE FOR
BODILY INJURY AND THE WARRANTY IS VOID.
GENERAL G IDELINES

Part No. 1110516 9XTERRA GT
FIELD LOAD TEST (FIGURE 1)
NO E: he following test can also be performed through the controller of the wheelchair along with a
remote programmer. Refer to the individual CONTROLLER ANUAL supplied with each wheel-
chair.
Old batteries lose their ability to store and release power, due to increased internal resistance.
This means that as you try to take power from the battery, some of that power is used up in the
process of passing through the battery, resulting in less voltage at the posts. The more power
drawn, the lower the voltage available. When this lost voltage drops the output 1.0 volts
under load (2.0 for a pair), replace the batteries.
Testing under load is the only way to spot this problem. While special battery load testing
equipment is available, it is costly and difficult to transport.
Use a digital voltmeter to check battery charge level at the charger connector. It is located on
the base of the wheelchair frame.
NO E: READ the instructions CAREFULLY before using the digital voltmeter.
NO E: Invacare recommends that ONLY a qualified service technician perform this test.
1. Ensure that power is OFF.
2. Make sure battery is fully charged. An extremely discharged battery will exhibit the same
symptoms as a bad one.
. Remove the footrests from the wheel-
chair and place the CASTERS of the
wheelchair against a wall, workbench or
other stationary object.
4. Place the voltmeter leads into the
charger plug on the wheelchair. Most
digital voltmeters are not affected by
polarity, however, analog meters
(meters with swinging needles) can be
and should be used carefully. A good
meter reading should be 25.5 to 26
VDC.
5. Have two (2) individuals (one [1] on each arm) apply as much downward pressure as
possible on the arms of the wheelchair.
6. Turn the wheelchair ON and push the joystick forward, trying to drive the wheelchair
through the stationary object. This puts a heavy load on the batteries as they try to push
through the stationary object. Read the meter while the motors are straining to deter-
mine the voltage under load.
NO E: If the voltage drops to less than 23.5 volts from a pair of fully charged batteries while under
load, they should be replaced regardless of the unloaded voltages.
SECTION 2TRO BLESHOOTING
This Procedure Includes the Following:
Field Load Test
Using Hydrometer To Check Battery
Cells (Lead Acid)
otor Testing
otor Brush Inspection
Electro- echanical Parking Brake Testing
(+)
(-)
FIG RE 1 - FIELD LOAD TEST
Battery Charger
Connector
Digital Voltmeter
TRO BLESHOOTING

XTERRA GT 10 Part No. 1110516
USING HYDROMETER TO CHECK BATTERY CELLS (LEAD
ACID) (FIGURE 2)
NO E: Perform this procedure when a digital voltmeter is not available.
NO E:: Use of Lead Acid (wet) batteries is not recommended.
WARNING
NEVER smoke or strike a match near the batteries. If the caps of the battery
cells are removed, NEVER look directly into them hen charging the battery.
The use of rubber gloves and chemical goggles or face shields is recommended
hen orking ith batteries.
When reading a hydrometer, DO NOT allo any liquid to come in contact
ith your eyes or skin. It is a form of acid and can cause serious burns, and in
some cases, blindness. If you do get battery acid on you, flush the exposed
areas ith cool ater IMMEDIATELY. If the acid comes into contact ith eyes
or causes serious burns, get medical help IMMEDIATELY.
The battery acid can damage your heelchair, clothing, and household items.
Therefore, take readings cautiously and only in designated areas.
ONLY use distilled ater hen topping off the battery cells.
Most batteries are not sold ith instructions. Ho ever, arnings are frequently
noted on the cell caps. Read them carefully.
1. Remove the battery box(es). Refer to INSTALLING/REMOVING BATTERIES in
SECTION 8 of this manual.
2. Remove the battery caps from the battery.
. Squeeze the air from the hydrometer.
4. Place the hydrometer into a battery cell.
NO E: DO NOT fill hydrometer more than 3/4 full.
5. Draw up sufficient acid to cover float balls.
6. Tap lightly to remove air bubbles.
7. Number of floating balls indicates charge.
NUMBER OF FLOATING BALLS
0 Discharged
1 25% Charged
2 50% Charged
3 75% Charged
4 100% Charged
* 5 Overcharged * Check charging system.
8. Flush the liquid back into the same cell after reading the float. Repeat this step until all
cells have been properly read. A shorted or dead cell can be detected when it is the only
cell that does not charge.
9. Flush hydrometer in cold running water by allowing the water to rise into hydrometer as
far as possible. Do this several times to guard against burn damage.
10. Replace the battery caps.
11. Reinstall battery boxes. Refer to INSTALLING/REMOVING BATTERIES in SECTION 8 of
this manual.
FIG RE 2 - SING HYDROMETER
TO CHECK BATTERY CELLS
(LEAD ACID)
SECTION 2 TRO BLESHOOTING
Number of loating
Balls Will Vary Accord-
ing to Charge
TRO BLESHOOTING

Part No. 1110516 11 XTERRA GT
SECTION 2
MOTOR TESTING (FIGURE 3)
1. On the 4-pin motor connector, locate the
two (2) contacts in the red and black
housings.
2. Set the digital multimeter to measure ohms
(Ω).
. Measure the resistance between the two
(2) motor contacts.
NO E: A normal reading is between 1 and 5 ohms
(Ω). A reading of 0 ohms (Ω) or in excess of 15 ohms
(Ω) indicates a problem. High readings are generally
caused by bad connections and/or damaged brushes.
Contact authorized dealer or Invacare.
TRO BLESHOOTING
MOTOR BRUSH INSPECTION (FIGURE 4)
There are two (2) contact brushes on the motors located under the brush caps on the
motor housing. If these caps are hard to remove they are either overtightened or the motor
has become very hot. Let motors cool. If caps still cannot be removed, it is recommended
that the motor be sent to Invacare Technical Services at 1-800-8 2-4707 for inspection/
repair.
NO E: It is very important to note which way the brush comes out of the motor. he brush UST be
placed into the motor exactly the same way to ensure good contact with the commutator.
1. Once the motor brush caps have been removed, pull the brushes out of the motor. The
end of the brushes should be smooth
and shiny and the spring should not be
damaged or discolored. If one or both of
the brushes are damaged, only the
damaged or worn brushes need be
replaced. It is very important that any
time a brush is replaced, it must be
burned in. This is accomplished by
running the motor for one hour in each
direction with a half hour break in-
between. This should also be done with
little or no load on the motor, i.e., put
the wheelchair up on blocks so the drive
(large) wheels do not contact the ground
and run the wheelchair. A motor with
only one brush replaced will only carry a
small percentage of its rated load capacity
until the NEW brush is burned in.
FIG RE 3 - MOTOR TESTING
Motor Connector
Ohmmeter
Cap
4 Pin Motor Connector
Motor
FIG RE 4 - MOTOR BR SH
INSPECTION
TRO BLESHOOTING

XTERRA GT 12 Part No. 1110516
ELECTROMECHANICAL PARKING BRAKE TESTING
(FIGURE 5)
NO E: his procedure should only be performed
on wheelchairs with conventional motor/gearbox
assembly.
1. On the four-pin motor connector, locate
the side by side connectors in the black
housings.
2. Set the digital multimeter to read ohms
(Ω).
. Measure the resistance between the two
(2) brake contacts. A normal reading is
100 ohms (Ω). A reading of 0 ohms (Ω)
or a very high reading; i.e., MEG ohms or
O.L. (out of limit) indicates a shorted
brake or an open connection respec-
tively. If either condition exists, send the
motor to Invacare Technical Service for
inspection/repair.
NO E: A bad motor can damage the controller module but a bad controller will NO damage a motor.
TRO BLESHOOTINGSECTION 2
4 Pin Motor Connector
Ohmmeter
Cap Motor
FIG RE 5 -
ELECTROMECHANICAL PARKING
BRAKE TESTING
TRO BLESHOOTING

Part No. 1110516 13 XTERRA GT
SECTION 3HARDWARE TORQ E SPECIFICATIONS
HARDWARE TORQUE SPECIFICATIONS
Torque to
60 in-lbs
STANDARD SEAT FRAME
Loctite® and
Torque to
75 in-lbs
Loctite and
Torque to
75 in-lbs
SEAT FRAME WITH CJ BACK BRACKETS TO OBTAIN 14 AND 15-INCH
SEAT DEPTHS
Torque to
60 in-lbs
Seat
rame
NO E: Adjustable seat
frame shown. CJ back
brackets attach to the
standard seat frame in
the same manner.
Loctite® and
Torque to
75 in-lbs
Loctite and
Torque to
75 in-lbs
HARDWARE TORQUE SPECIFICATIONS
Seat
rame

XTERRA GT 14 Part No. 1110516
TORQUE SPECIFICATIONS
Tube Spacers
may not be
required
depending
on seat
width and
depth
Torque to
75 in/lbs.
(Typ. both
sides)
Torque to
60 in/lbs.
Torque to
60 in/lbs.
Torque to
75 in/lbs.
Torque to
13 ft/lbs.
± 20%
Torque to
75 in/lbs.
Torque to
13 ft/lbs.
± 20%
VAN SEAT
ADJ STABLE SEAT FRAME
STANDARD
SEAT FRAME
SECTION 3 HARDWARE TORQ E SPECIFICATIONS
HARDWARE TORQUE SPECIFICATIONS
Torque to
13 ft/lbs.
± 20%

Part No. 1110516 15 XTERRA GT
BASE FRAME HARDWARE
TORQUE SPECIFICATIONS
Torque to
75 in/lbs.
± 20%
lip-Up Seat
Plate Assembly
(Plate removed for clarity)
Torque to
13 ft/lbs.
± 20%
Torque to
13 ft/lbs.
± 20%
Torque to
75 in/lbs. ± 20%
Torque to
13 ft/lbs. ± 20%
Torque to
75 in/lbs. ± 20%
Torque to
13 ft/lbs.
± 20%
Torque to
75 in/lbs. ± 20%
(all five (5) screws)
Torque to
40 in/lbs. ± 20%
Torque to
45 ft/lbs. ± 20%
Torque to
13 ft/lbs. ± 20%
Torque to
40 in/lbs. ± 20%
Torque to
40 in/lbs. ± 20%
SECTION 3HARDWARE TORQ E SPECIFICATIONS
HARDWARE TORQUE SPECIFICATIONS

XTERRA GT 16 Part No. 1110516
Torque to
75 in/lbs.
± 20%
Torque to
40 in/lbs.
± 20%
Torque to
40 in/lbs.
± 20%
Torque to
75 in/lbs.
± 20%
Torque to
75 in/lbs. ± 20%
Torque to
75 in/lbs. ± 20%
SECTION 3 HARDWARE TORQ E SPECIFICATIONS
HARDWARE TORQUE SPECIFICATIONS
BASE FRAME HARDWARE
TORQUE SPECIFICATIONS

Part No. 1110516 17 XTERRA GT
This Section Includes the Following:
Replacing Armrest Pads - Van Style Seat
Replacing Van Style Seat Armrest Plate
Installing/Removing Flip Back Armrests
Installing/Removing Van Style Seat Armrests
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure that all
attaching hard are is tightened securely - other ise injury or damage may result.
REPLACING ARMREST PADS - VAN STYLE SEAT (FIGURE
1)
1. Remove the mounting screw that secures
the front of the armrest pad to the armrest
plate.
2. Remove the mounting screw that secures
the rear of the armrest pad and armrest
insert to the armrest plate.
. Remove the EXISTING armrest pad and
position the NEW armrest pad on the
armrest plate.
4. Line up the mounting holes in the armrest
insert, armrest plate and NEW armrest
pad.
5. Reinstall the rear mounting screw through
the armrest insert, armrest plate and armrest pad and tighten securely.
6. Reinstall the front mounting screw into the armrest plate and NEW armrest pad and tighten
securely.
REPLACING ARMREST PLATE VAN STYLE SEAT
(FIGURE 2)
1. If necessary, remove the three ( ) mounting screws, spacers and locknuts that secure
the joystick mounting bracket to the armrest plate.
2. Remove armrest pad. Refer to REPLACING ARMREST PADS - VAN STYLE SEAT in this
section of the manual.
. Remove the mounting screw, washers and locknut that secure the EXISTING armrest plate
to the arm weldment.
4. Position the NEW armrest plate on the armrest weldment and secure with the mounting
screw, washers, and locknut. Refer to FIGURE 2 for correct hardware orientation.
5. Reinstall van style armrest pad. Refer to REPLACING ARMREST PADS - VAN STYLE
SEAT in this section of the manual.
6. If necessary, reinstall the three ( ) mounting screws, spacers and locknuts that secure
the joystick mounting bracket to the armrest plate.
7. Repeat STEPS 1-6 for the opposite armrest plate, if necessary.
Armrest
Insert
Mounting
Screw
Armrest
Pad
Armrest Plate
FIG RE 1 - REPLACING ARMREST
PADS - VAN STYLE SEAT
Mounting
Screw
FRONT
REAR
SECTION 4ARMS
ARMS

XTERRA GT 18 Part No. 1110516
INSTALLING/REMOVING FLIP BACK ARMRESTS (FIGURE 3)
WARNING
Make sure the flip back armrest release and height adjustment levers are in the
locked position before using the heelchair.
NO E: Flip back armrest release lever must be in the unlocked (UP- HORIZON AL) position when
placing the armrest into the arm sockets.
REMOVING
Note: he MKIV-A joystick is one continuous cable that runs
from the joystick to the controller. he MKIV-RII joystick can
be disconnected at the point directly underneath the armrest.
1. Unlock the flip back armrest by positioning the
flip back armrest release lever into the HORI-
ZONTAL position.
2. Remove the quick release pin that secures the
flip back armrest to the rear arm socket.
. Perform one (1) of the following:
A. ARMREST WITH JOYSTICK - Cut the
tie-wraps that secure the joystick cable to
the seat frame.
MKIV-A joystick - Pull up on the flip
back armrest and remove the armrest
from the arm sockets and lay on floor.
MKIV-RII joystick - Disconnect joystick
lead from controller lead at junction point
on joystick tube. Pull up on the flip back
armrest and remove the armrest from
the arm sockets.
B. ARMREST W/O JOYSTICK -
Pull up on the flip back armrest and remove the armrest from the arm sockets
4. Remove the remaining flip-back armrest from the wheelchair.
FIGURE 3 - INSTALLING/REMOVING
FLIP BACK ARMRESTS
Rear
Arm
Socket
Quick
Release Pin
LOCKED
(VERTICAL)
UNLOCKED
(HORIZONTAL)
lip Back Armrest
Release Lever
lip Back
Armrest
Seat
rame
ront Arm
Socket
SECTION 4 ARMS
ARMS
FIG RE 2 - REPLACING ARMREST PLATE - VAN STYLE SEAT
Mounting
Screws
Washer
Locknut
Washer
Arm Weldment
Armrest
Plate Mounting
Screws
Locknuts
Joystick Mounting
Bracket
Armrest
Plate

Part No. 1110516 19 XTERRA GT
SECTION 4ARMS
ARMS
INSTALLING
1. Visually inspect to ensure flip back armrest release lever is in the unlocked HORIZONTAL
position.
2. Slide the flip back armrest into the arm sockets on the seat frame.
. Install the quick release pin through the rear arm socket and flip back armrest.
4. Lock the flip back armrest by pressing the flip back armrest release lever into the VERTI-
CAL position.
5. FOR ARMREST WITH JOYSTICK-
MKIV-A joystick - Secure the joystick cable to the seat frame with new tie-wraps.
MKIV-RII joystick - Connect joystick lead and controller lead and secure the joystick
cable to the seat frame with new tie-wraps.
6. Repeat STEPS 1-5 for the opposite flip back armrest.
FIGURE 4 - INSTALLING/REMOVING
OF ARMREST VAN STYLE SEAT
Mounting
Screw
Van Seat
rame
Height
Adjustment
Holes
INSTALLING/REMOVING VAN STYLE SEAT ARMRESTS
(FIGURE AND 4)
REMOVING
NO E: he MKIV-A joystick is one continuous cable that runs from the joystick to the controller. he
mkiv-RII joystick can be disconnected at the point directly underneath the armrest.
1. Remove the mounting screw that secures the armrest to the van seat frame.
2. Perform one (1) of the following:
A. ARMREST WITH JOYSTICK - Cut the
tie-wraps that secure the joystick cable
to the seat frame.
MKIV-A joystick - Pull up on the
armrest and remove the armrest from
the van seat frame and lay on floor.
MKIV-RII joystick - Disconnect
joystick lead from controller lead at
junction point on joystick tube. Pull up
on the armrest and remove the
armrest from the van seat frame.
B. ARMREST W/O JOYSTICK -
Pull up on the armrest and remove the armrest from the van seat frame.
INSTALLING
1. Slide the armrest into the van seat frame.
2. Secure with mounting screw.
. FOR ARMREST WITH JOYSTICK-
MKIV joystick - Secure the joystick cable to the seat frame with new tie-wraps.
RII joystick - Connect joystick lead and controller lead and secure the joystick cable to
the seat frame with new tie-wraps.
4. Repeat STEPS 1- for the opposite flip back armrest.

XTERRA GT 20 Part No. 1110516
STANDARD/ADJUSTABLE SEAT FRAMES (FIGURE 2)
1. Remove the seat cushion from the seat
pan.
2. Move the flip back armrests out of the
way. Refer to USING/ADJUSTING FLIP
BACK ARMRESTS in PROCEDURE 5 of
the Owners manual, 1106627.
. Remove the two (2) mounting screws,
quick release pin tabs, spacers, and
locknuts that secure the seat pan and seat
positioning straps to the seat frame.
4. Remove the two (2) halves of the seat
positioning strap from the rear seat frame.
NO E: Quick release pin tabs are positioned un-
derneath the seat positioning strap.
5. Reposition the two (2) NEW seat posi-
tioning strap halves underneath seat rails.
BACKSECTION 5
This Procedure Includes the Following:
Replacing Seat Positioning Strap Removing/Installin Back Upholstery
Changing Back Height Back Angle Adjustment
BACK
FIG RE 2 - REPLACING SEAT
POSITIONING STRAP
Seat Pan
Seat
Positioning
Strap
Locknut
Mounting
Screw
Quick
Release Pin
Tab Spacer
Front of
Seat Frame
Rear of
Seat Frame
Seat Rail
FIG RE 1 - REPLACING SEAT
POSITIONING STRAP - VAN
STYLE SEAT
Van Seat rame
Seat Positioning
Strap
Locknuts
Washer FRONT
REAR Mounting
Screw
Seat Positioning Strap
REPLACING SEAT POSITIONING STRAP
VAN STYLE SEAT (FIGURE 1)
1. Remove the van style seat from the van
seat frame. Refer to INSTALLING/
REMOVING VAN STYLE SEAT AS-
SEMBLY in SECTION 6 of this manual.
2. Remove the two (2) mounting screws,
washers, and locknuts that secure the
seat positioning straps to the van seat
frame.
NO E: he washer is positioned between the
seat positioning strap and the mounting screw.
. Secure the NEW seat positioning
strap halves with the mounting
screws, washers and locknuts to the
van seat frame and torque to 75-inch
pounds.
4. Reinstall the van style seat to the van
seat frame. Refer to INSTALLING/REMOVING VAN STYLE SEAT ASSEMBLY in SEC-
TION 6 of this manual.
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure that all
attaching hard are is tightened securely - other ise injury or damage may result.