Sunrise Medical Mobility Aid 931157 User Manual

Guardian Aspire Service Manual  
©2003 Sunrise Medical Inc.  
931157 Rev A  
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INTRODUCTION  
Please read and follow instructions in this service manual before attempting to troubleshoot  
or repair this product for the first time.If there is anything in this Service Manual that is not  
clear, or if you require additional Technical assistance, contact Sunrise Medical at: (800)  
333-4000 option 2, then option 1.  
Safely troubleshooting and/or repair of this product depends on your diligence in following  
the instructions within this manual. Sunrise Medical is not responsible for injuries or dam-  
age resulting from a person’s failure to exercise good judgement and/or common sense.  
There are warning symbols used in this document to focus attention on any  
hazard that could effect the safety of the individual troubleshooting the  
chairs covered in this Service Manual.  
This Service Manual has been compiled as a troubleshooting guide for the Guardian Aspire.  
Photographs and content may differ from the actual products in some cases due to  
changes in specifications and other factors.  
This Service Manual is intended for use by persons with a basic working knowledge and the  
skills required in servicing and maintaining Power Wheelchairs. Persons without a General  
Working knowledge and expertise in the servicing of this product should not carry out trou-  
bleshooting procedures. This can result in problems with future servicing, and/or damage  
to the unit.  
Parts and configuration or specifications of Products included in this Service Manual  
are subject to change without prior notice.  
SUNRISE MEDICAL  
2003  
ASPIRE SERVICE MANUAL  
PAGE 0.1  
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VSI Controller  
SMASP0X01  
VSI Controller Buttons  
VSI Controller  
Battery Condition Meter- A  
series of ten LED’s, which indi-  
cate charge level.  
Speed/Profile indicator-  
A
series of five LED’s, whichdisplay  
speed and profile settings  
On/Off Key- Press to power on  
or off the power chair or  
Controller.  
Horn Key- Activates a warning  
horn.  
Speed/ Profile Decrease. Used  
to decrease the Speed/ Profile  
setting.  
Speed/ Profile Increase. Used  
to Increase the Speed/ Profile  
setting.  
SMASP0P01  
CNTRLLR BTNS  
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2003  
ASPIRE SERVICE MANUAL  
PAGE 0.2  
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Plugs/Connectors  
1 = 24 Vdc  
2 = 0 Vdc  
1
2
1 = 0 Vdc  
3
3
1
2
2 = Inhibit 3  
3 = 24 Vdc  
3 = Inhibit 1/ Programmer  
Charger port  
Outside View  
3-pin connect  
Outside View  
3pin  
charger port  
9pin  
Controller and Harness  
+24 Vdc Solenoid Brake Input  
Motor Plug  
0 Vdc  
0 Vdc  
7
5
8
6
24 Vdc  
24 Vdc  
1
3
2
4
9
LH Motor +  
RH Motor +  
LH Motor -  
RH Motor -  
4-pin connect  
3
1
4
2
1 = Brake Solenoid  
2 = Brake Solenoid  
3 = Motor  
4 = Motor  
9-pin Connect Harness Socket Face  
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2003  
ASPIRE SERVICE MANUAL  
PAGE 0.3  
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Main Wiring Diagram/Tool List  
Wiring Diagram  
BLACK  
FUSE  
BLACK  
RED  
RED  
ORANGE  
BLACK  
RED  
FUSE  
ORANGE  
Basic Tool List  
For correct maintenence, adjustment, and for  
disassembly/reassembly of the power chair you  
will need the following tools:  
WIRE_DGM1  
1. 3mm Allen wrench  
2. 5mm Allen wrench  
3. 13mm Open-end wrench  
4. 13mm Socket wrench  
5. 16mm Open-end wrench  
6. 17mm Deep Socket wrench  
7. 19mm Open-end wrench  
8. Phillips screwdriver #2  
9. Flat blade screwdriver  
10. Cutter for the zip-tie  
SUNRISE MEDICAL  
2003  
ASPIRE SERVICE MANUAL  
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Section 1  
Troubleshooting: No Power  
1.0 Circuit Breaker Reset  
If On/off button is pressed and no light or bar is shown, check  
for tripped circuit breaker (see figure A1.0.1) and make sure  
all connections are clean and tight (including the batteries). If  
the problem persists, then perform the following diagnostics.  
A1.0.1  
1.1 Test Joystick  
Check that the voltage is going to the controller, set the  
meter to dc volts and take a voltage reading from pin 1  
(using the red lead) and pin 2 (using the black lead) to the  
charger port of the VSI controller (see figure A1.1.1) If the  
voltage meter reads approximately 24 volts, replace the con-  
troller, if the meter reads less than 12 volts, proceed to the  
next step.  
A1.1.1  
Note: Make sure the polarity is correct. If the reading is inter-  
mittent, there is a connection or Controller problem.If polari-  
ty is reversed proceed to step 1.6  
2
1
3
If the total Battery Voltage reads approx. 24 V, and the Polarity is correct, replace the controller.  
1.2 Battery Test  
Check that the batteries are fully charged and in good con-  
dition. Remove the seat, and the battery cover, with con-  
troller connected and turned on, use the meter to check the  
voltage across the battery terminals (see figure A1.2.1). If  
the voltage meter reads between 12 -13.5 volts, then pro-  
ceed to next step. If the voltage meter reads below  
12volts,charge the batteries.  
Note: To find a bad battery, use a battery load tester.  
A1.2.1  
If the voltage meter reads below 12 volts, charge the batteries.  
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ASPIRE SERVICE MANUAL  
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1.3 Re-Charging the Batteries  
If the total Battery voltage is less than 8 Volts, charge each Battery separately with a 12 Volt Trickle Charger for a few  
hours. This should bring the voltage back up to the level that the On-Board Charger will activate.  
1.4 Not Charging  
Check the charger indicator light in the front shroud. If it is not lighted, check the connection from the light to the charger.  
Check the Circuit Breaker Box and make sure it is not tripped. Make sure the 3 pin Charger plug is connected properly  
and is in good condition. Check all batteries and harness connections following steps 1.2 and 1.5 - 1.9 Check the  
connection from the A/C charging outlet to the charger. If none of these actions have corrected the problem, then replace  
the charger.  
Note: On Board Charger Indicator Light shows Amber color when charging, and Green when fully charged.  
1.5 Battery Connection Check  
Check that the female Beau plug on the chair has voltage.  
Set the meter to dc volts and measure pins 5 (using the red  
lead of the meter) and 7 (using the black lead of the meter)  
as shown in (figure A1.5.1).  
A1.5.1  
If the voltage meter reads full voltage, then measure pins 6  
(using the red lead of the meter) and 8 (using the black  
lead of the meter) as shown in (figure A1.5.2). If both the  
measurements read full voltage, then replace the controller,  
or else proceed to the next step.  
A1.5.2  
If both of the measurements read full voltage, then replace the controller.  
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1.6 Battery Wire Harness  
Check that the battery wire harness has the polarity cor-  
rect. Set the meter to dc volts and measure the connector  
with the red lead on the red wire contact (top of the con-  
nector) and the black lead on the black wire contact (bot-  
tom of the connector) as shown in (figure A1.6.1). If both  
battery wire harnesses have full voltage and correct polari-  
ty, then proceed to step 1.8. If voltage is absent proceed to  
step 1.7. If polarity is reversed correct battery wiring.  
A1.6.1  
If polarity is reversed correct battery wiring.  
1.7 Battery Fuse  
Check that the battery fuse is in good condition. With the  
batteries disconnected remove the fuse cap, inspect the  
fuse to see if the fuse is blown. To make sure the fuse is  
not blown, set the meter to ohms and measure the resist-  
ance across the fuse. see (figure A1.7.1). If the meter  
reads more than one ohm, change the fuse, or else pro-  
ceed to the next step.  
A1.7.1  
If the meter reads more than one ohm, change the Battery fuse.  
1.8 Circuit Breaker Test  
To check the circuit breaker set the meter to ohms and  
measure the resistance across the circuit breaker as shown  
in (figure A1.8.1). If the meter reads more than 1 ohm,  
then change the circuit breaker, otherwise proceed to next  
step.  
A1.8.1  
If the meter reads more than 1 ohm, then change the circuit breaker.  
1.9 Main Harness  
If the above steps did not correct the problem, change the  
main harness.  
If the previous steps did not correct the problem, change the main harness.  
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Section 2  
Understanding Controller Display  
2.1 The Maximum Speed Indicator Ripples  
The wheelchair is locked. To unlock the wheelchair, deflect the joystick forwards until the control system  
chirps. Then deflect the joystick in reverse until the control system chirps. Release the joystick, there  
will be a long beep. The wheelchair is now unlocked.  
To lock the wheelchair, while the control system is switched on, depress and hold the on/off button. After  
1 second, the control system will chirp. Now release the on/off button, deflect the joystick forwards  
until the control system chirps, and deflect the joystick in reverse until the control system chirps. Release  
the joystick, there will be a long beep. The wheelchair is now locked.  
2.2 The Maximum Speed Indicator Flashes  
This indicates that the chair is charging via on-board charger. The chair will be ready to drive as soon as  
the charger is unplugged.  
2.3 Battery Gauge is Steady  
This indicates that all is well.  
2.4 Battery Gauge Flashes Slowly  
The control system is functioning correctly, but you should charge the battery as soon as possible.  
2.5 Battery Gauge Steps Up.  
the wheelchair batteries are being charged with the offboard charger. You will not be able to drive the  
wheelchair until the charger is disconnected and you have reset the control system by switching off the  
power and then powering up again.  
2.6 Battery Gauge Blinks Once Every 2.5 Seconds  
The control system has "gone to sleep" because the wheelchair has not been driven for a period of time.  
The time period depends on the programming of the system. To re-start, reset the system by switching  
off the power and then powering up again.  
2.7 Battery Gauge Flashes Rapidly (even with the joystick released)  
The control system safety circuits have been activated and the control system hasbeen prevented from  
moving the wheelchair. This indicates a system trip, i.e. the VSI has detected a problem somewhere in  
the wheelchair's electrical system. Please refer to Section 3 (VSI Controller Diagnostics).  
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Section 3  
Understanding VSI Controller Diagnostics Codes  
3.1 One Bar - Low Battery Voltage  
This code could indicate discharged batteries, failed batteries, or poor battery connections. Begin by recharging the bat-  
teries and then refer to Section 1 to check batteries and connections.  
3.2 Two Bars - Left Motor Disconnected  
The left hand motor has a bad connection. Check the connections to the left hand motor.  
Test Left Motor Open  
Check that the batteries are fully charged and in good con-  
dition; and check all cables and connections. Check the  
connections to the left motor, look for a loose or damaged  
connector. Remove the 9-pin Beau plug and check the  
resistance across pin 3 and pin 4 as shown in (figure  
A3.2.1  
A3.2.1). If the meter reads between 0 to 1.5 ohms, then  
replace the controller.  
If the meter reads between 0 to 1.5 ohms, then replace the controller.  
Otherwise, check the brushes on the left motor. Ensure that  
they are not excessively worn, (replace as required) as  
shown in (figure A3.2.2).  
A3.2.2  
Use the meter to check the resistance across the two bot-  
tom contacts (thicker wires) on the 4-pin motor connector  
as shown in (figure A3.2.3). If the meter reads between 0  
to 1.5 ohms, then replace the main harness. If none of the  
above corrects the problem, replace the left motor.  
A3.2.3  
If the meter reads between 0 to 1.5 ohms, then replace the main harness.  
If none of the above corrects the problem, replace the left motor.  
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Understanding VSI Controller Diagnostics Codes (cont.)  
3.3 Three Bars - Left Motor Wiring Trip  
The left hand motor has a short circuit to a battery connection.  
Test Left Motor Short  
Check that the batteries are fully charged and in good con-  
dition; and check all cables and connections. Check the  
connections to the left motor, look for a loose or damaged  
connector. Take a resistance reading from pin 3 to pin 9  
and pin 3 to pin 7 or pin 8, see (figure A3.3.1) and (A3.3.2),  
if the all the circuits are open (resistance is greater than 10  
K ohm), then replace the controller. If the reading is short  
(resistance is less than 10 K ohm), proceed to check the  
4-pin motor connector.  
A3.3.1  
A3.3.2  
If the all the circuits are open (resistance is greater than 10 K ohm), then replace the controller.  
Measure the resistance from the bottom contact of the red  
thick wire on the 4-pin left motor connector to each of the  
top contacts of the connector see (figure A3.3.3). Measure  
the resistance from the bottom contact of the black thick  
wire on the 4-pin left motor connector to each of the top  
contacts of the connector see (below right). If all of the  
readings are open, then replace the main harness. If any  
of the readings are short, then replace the left motor.  
A3.3.3  
Test 1  
Test 3  
Test 2  
Test 4  
If all of the readings are open, then replace the main harness.  
If any of the readings are short, then replace the left motor.  
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Understanding VSI Controller Diagnostics Codes (cont.)  
3.4 Four Bars- Right Motor Disconnected  
The right hand motor has a bad connection. Check the connections to the right hand module.  
Test Right Motor Open  
Check that the batteries are fully charged and in good con-  
dition, and check all cables and connections. Check the  
connections to the right motor, look for a loose or damaged  
connector. Remove the 9-pin Beau plug and check the  
resistance across pin 1 and pin 2 as shown on (figure  
A3.4.1). If the meter reads between 0 to 1.5 ohms, then  
replace the controller.  
A3.4.1  
If the meter reads between 0 and 1.5 ohms, then replace the controller.  
Otherwise, check the brushes on the right motor. Ensure  
that they are not excessively worn, (replace as required) as  
shown in (Figure A3.4.2).  
A3.4.2  
Use the meter to check the resistance across the two bot-  
tom contacts of the thicker wires on the 4-pin motor con-  
nector as shown in (figure A3.4.3). If the meter reads  
between 0 to 1.5 ohms, then replace the main harness. If  
none of the above corrects the problem, replace the right  
motor.  
A3.4.3  
If the meter reads between 0 and 1.5 ohms, then replace the main harness. If this does not correct the prob-  
lem, then replace the right motor.  
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Understanding VSI Controller Diagnostics Codes (cont.)  
3.5 Five Bars - Right Motor Wiring Trip  
The right hand motor has a short circuit to a battery connection.  
Test Right Motor Short  
Check that the batteries are fully charged and in good con-  
dition, and check all cables and connections. Check the  
connections to the right motor, look for a loose or damaged  
connector. Take a resistance reading from pin 2 to pin 9  
see (figure A3.5.1). Take a resistance reading from pin 2  
to pin 7 or pin 8 see (figure A3.5.2), if the all the circuits are  
open (resistance is greater than 10K ohms), then replace  
the controller.  
A3.5.1  
A3.5.2  
If the all the circuits are open (resistance is greater than 10K ohms), then replace the controller.  
If the reading is short (resistance is less than 10 K ohms)  
on any of the readings, proceed to check the 4-pin motor  
connector. Measure the resistance from the bottom contact  
of the red thick wire on the 4-pin right motor connector to  
each of the top contacts of the connectors see (figure  
A3.5.3). Measure the resistance from the bottom contact of  
the black thick wire on the 4-pin right motor connector to  
each the top contacts of the connector (below right). If all  
of the readings are open, then replace the main harness. If  
A3.5.3  
any of the readings are short, then replace the right motor.  
Test 1  
Test 3  
Test 2  
Test 4  
If all of the readings are open, then replace the main harness.  
If any of the readings are short, then replace the right motor.  
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Understanding VSI Controller Diagnostics Codes (cont.)  
3.6 Seven Bars - Possible Joystick Trip  
A joystick trip is indicated. Make sure that the joystick is in the center position before switching on the control system.  
Check that the batteries are fully charged and in good condition, examine the joystick for damage. This fault can be  
caused by a joystick that fails to center itself due to being dirty, bent or broken. If this is the case, replace the controller.  
If the joystick fails to center because it is bent or broken, replace the controller  
3.7 Eight Bars - Possible Control System Trip  
A control system trip is indicated. Make sure that all connections are secure.  
Controller Fault  
Check that the batteries are fully charged and in good condition, and check all joystick connections and cables. If this  
does not correct the problem, then replace the controller.  
3.8 Nine Bars - Solenoid Brake Trip  
Brake Fault  
The parking brakes have a bad connection. Check the  
parking brake and motor connections. Make sure the con-  
trol system connections are secure.  
Brake Fault  
Check battery connections and cables. Set the meter to  
A3.8.1  
ohms and measure the resistances from pin 9 to pin 7 of  
the 9-pin beau plug see (figure A3.8.1.) Measure the resist-  
ance from pin 9 to pin 8 of the 9 pin Beau connector see  
(figure A3.8.2).If both readings are approximately 30 ohms,  
replace the controller.  
A3.8.2  
If both readings are approximately 30 ohms then replace the controller  
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Understanding VSI Controller Diagnostics Codes (cont.)  
3.8 Nine Bars - Solenoid Brake Trip (cont.)  
Test Motor Connections  
If either or both readings are incorrect, then measure the  
resistance on the two small contacts on the 4-pin motor  
connector see (figure A3.8.3). If both motor connectors  
read approximately 60 ohms, then replace the main har-  
ness. Otherwise, replace the motor that does not read  
approximately 60 ohms.  
A3.8.3  
If both motor connectors read approximately 60 ohms, then replace the main harness. Otherwise, replace  
the motor that does not read approximately 60 ohms.  
3.9 Ten Bars - High Battery Voltage  
An excessive voltage has been applied to the control  
system. This is usually caused by a poor battery connec-  
tion. Check the battery connections.  
Battery Fault  
Check that the batteries are fully charged, the correct volt-  
age and in good condition. Take a voltage reading from  
pin 1 and pin 2 of the charger port of the VSI controller, see  
(figure A3.9.1) If the meter reads more than 30 volts, then  
check the charger. Otherwise, replace your controller.  
A3.9.1  
2
1
3
If the meter reads more than 30 volts replace the charger,  
If the Batteries, connections, and voltage level are correct replace the controller.  
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Section 4  
Disassembly/Reassembly, and Adjustment  
Step 1 - Controller and Seat  
Note: When using the terms “Right Hand, Left Hand” this is referenced as if seated in the chair.  
Disassembly  
a. Squeeze down the locking legs of the 3 pin charger plug  
and unplug it from the rear of the chair. (figure s1.1).  
b. Rock the controller plug back and forth until it is loose  
and then unplug it (figure s1.1).  
Note: Remember to lay cables on the seat otherwise they  
may become tangled when taking off the seat.  
c. Pull out the safety pin from the left front seat post  
(figure s1.2).  
d. Tilt the seat back, slide it forward, and lift it off of the  
base (figure s1.2).  
s1.1  
Reassembly  
a. Line up the rear seat frame with the rear seat posts,  
slide the seat back to the stops and let the seat frame  
rotate down in to the front seat post latching brackets.  
b. Make sure the latching levers are locked flat against the  
seat post brackets, and insert the locking pin.  
c. Plug the controller plugs into the plug receptacles at the  
rear of the chair.  
s1.2  
Adjustment  
Note: There is a setscrew in each “saddle” of the front seat  
post brackets that can adjust the free play of the seat frame  
in the bracket. Adjustment of this part is accomplished by  
using a 3 mm Hex wrench. After adjustment, ensure that  
the latching levers are fully seated and the locking pin can  
be installed see (figure s1.3).  
s1.3  
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Disassembly/Reassembly, and Adjustment (cont)  
Step 2 - Cog Release  
Disassembly  
a. Turn each of the two cog release handles counter-clock-  
wise to unscrew them.  
Note: For better access, pull the cog release handle to the  
free-wheel position (figure s2.1).  
Reassembly  
a. Hold the cog release pivot joint, and thread the cog  
release handle back to the pivot joint.  
Adjustment  
Tighten the Jam nut to set the cog release handle to the  
correct orientation.  
s2.1  
Note: It is recommended that the handles end up facing  
outward.  
Step 3 - Seat Posts  
Disassembly  
a. Remove the cap from the left side of the front shroud  
(Figure s3.1)  
b. Pull the spring loaded release pin to disengage the seat  
post. While holding the Spring Loaded Release Pin, slide  
the seat post to it’s maximum height position to expose the  
small quick release pin at bottom of shaft. (Figure s3.2)  
c. Remove the small quick release pin, pull the Spring  
Loaded Release Pin and remove the seat post.  
d. Pull out the three remaining quick release pins, and  
remove all other seat posts.  
s3.1  
Reassembly  
a. perform the reverse of instructions above.  
s3.2  
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Disassembly/Reassembly, and Adjustment (cont)  
Step 4 - Shroud  
Disassembly  
Note: Make sure the cog release pivot joints are in a posi-  
tion that matches the shroud cutout.  
a. Use a #2 Phillips screw driver to remove the four mount-  
ing screws and slide out while lifting off the top shroud  
from the back of the chair.  
(figure s4.1).  
b. Use a #2 phillips screw driver to remove the six mount-  
ing screws on the inside of the shroud to remove the side  
shroud fairing (figure s4.2)  
c. Lift the color side shrouds from the side shroud fairing.  
Note: Color side shrouds are attached using a hook and  
loop fastener system.  
s4.1  
Reassembly  
a. Perform the reverse of instructions above.  
Note: Remember short screws to rear and middle holes  
and long screws to front.  
s4.2  
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Disassembly/Reassembly, and Adjustment (cont)  
Step 5 - Front Caster Cover  
Disassembly  
a. Use a #2 Phillips screw driver to remove the two mount-  
ing screws on the side of the front caster cover.  
(figure s5.1).  
b. Use a #2 phillips screw driver to remove the two mount-  
ing screws and the caster cover mounting bracket  
(figure s5.2).  
c. Repeat steps a and b on the other side.  
Reassembly  
a. Perform the reverse of instructions above.  
s5.1  
s5.2  
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Disassembly/Reassembly, and Adjustment (cont)  
Step 6 - Charger  
Disassembly  
a. Peel the velcro strip apart, and remove the on-board  
charger (figure s6.1).  
b. Slide the female charger plug out of the beau plug  
bracket (figure s6.2)  
c. Depress the locking tabs and unplug the A/C plug and  
charger light indicator plug.  
(figure s6.1)  
Reassembly  
a. First insert the velcro strip through the support ring  
before starting reassembly.  
b. Perform the reverse of instructions above.  
Note: The charger bar code sticker side must face outward.  
s6.1  
s6.2  
Step 7 - Battery  
Disassembly  
a. Depress the locking tabs and unplug the battery con-  
nectors.  
b. Grip the battery handle and pull the battery out of the  
base.  
Note - Pull out the front battery first, slide the second bat-  
tery out of the base.(figure s7.1)  
Reassembly  
a. Perform the reverse of instructions above.  
s7.1  
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Disassembly/Reassembly, and Adjustment (cont)  
Step 8 - Motor/Wheel  
Disassembly  
Note: For ease of disassembly, set the base frame on a  
block where all six wheels are at least 1 inch above the  
ground.  
a. Unwrap the wire looms from the motor and pull the  
motor connector out (figure s8.1).  
b. Depress the motor connector locking tab and unplug it  
(figure s8.1).  
c. Use a 5mm hex key to remove the six mounting screws  
(figure s8.2).  
s8.1  
d. Hold the motor-wheel assembly and tilt the cog release  
rod toward the center of the base to get around the motor  
mount, then pull the motor-wheel assembly out through the  
bottom of the frame.  
e. Straighten the lock washer tab of the drive wheel.  
f. Use a 17mm deep socket wrench to remove the drive  
wheel retention nut, then pull the drive wheel out from the  
motor shaft.  
Note: If the drive wheel is difficult to remove, then remove  
the wheel plate screws (Phillips Head)  
Reassembly  
a. Perform the reverse of instructions above.  
Note: Torque specifications  
s8.2  
* Motor mounting screws  
* Wheel retention nut  
* Wheel plate screw  
15-20 ft-lbs  
35-40 ft-lbs  
15-20 ft-lbs  
Adjustment  
Note: There is a suspension bumper on the frame to limit  
the motor’s movement (figure 8.3). It also changes the pre-  
load on the front caster.  
a. Use a 13mm open wrench to loosen or tighten the jam  
nut and make the proper adjustment (operator preference).  
b. Install wire tie on back inside corner of gear box.  
s8.3  
SUNRISE MEDICAL  
2003  
ASPIRE SERVICE MANUAL  
PAGE 16  
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Disassembly/Reassembly, and Adjustment (cont)  
Step 9 - Motor Mounts  
Disassembly  
a. Use a 5mm allen wrench and 13mm wrench to remove  
the mounting bolt connecting the linkage to the caster arm  
(figure s9.1).  
b. Use a 16mm wrench and 19mm wrench to remove the  
motor mount pivot bolt(figure s9.2).  
c. Slide the motor mount out from the base frame pivot  
bracket.  
Reassembly  
a. Reverse above instructions.  
Hint: If the mounting bolt is difficult to remove or install,  
then grasp the front trailing arm and the swing arm with  
one hand and squeeze together or remove the center bolt  
and the stopper tube.  
Note: Torque specifications on the pivot bolt and the mount-  
ing bolt are 40 in-lbs.  
s9.1  
s9.2  
SUNRISE MEDICAL  
2003  
ASPIRE SERVICE MANUAL  
PAGE 17  
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Disassembly/Reassembly, and Adjustment (cont)  
Step 10 - Front and Rear Caster Assembly  
Disassembly  
a. Straighten the locking washer tabs on the front (figure  
s10.1) and/or rear (figure s10.2) caster assemblies.  
b. Use the 13mm wrench and 13mm socket wrench to  
remove the mounting bolts.  
c. Slide the caster assemblies out from the base frame  
tubes.  
Reassembly  
a. Reverse above instructions.  
Note: Torque specification on the mounting bolts is  
13 ft-lbs.  
s10.1  
Note: Bend locking tabs against bolt head flats.  
Adjustment  
Note: There is a suspension bumper on the rear caster  
assembly to limit rocking motion (figure s10.3).  
a. Use a 13mm open wrench to loosen or tighten the jam  
nut to make the proper adjustment  
(operator preference).  
s10.2  
s10.3  
SUNRISE MEDICAL  
2003  
ASPIRE SERVICE MANUAL  
PAGE 18  
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Disassembly/Reassembly, and Adjustment (cont)  
Step 11 - Wire Harnesses  
Disassembly  
a. Remove all the zip ties on the base frame.  
b. Unwrap all the wire loom ties securing the harness to the  
frame.  
c. For the main harness, remove the two screws that hold-  
ing the female beau plug (figure s11.1).  
d. Remove the circuit breaker locking nut and push it  
through the bracket (figure s11.2), then remove the main  
wire harness.  
e. For the light and A/C harness, remove the front shroud  
and then remove the mounting screws on the A/C plug  
bracket.(figure s11.3).  
f. Push the light harness through the bracket.  
g. Pull the A/C harness through the bracket.  
s11.1  
Reassembly  
a. Reverse above instructions.  
Adjustment  
Note: The circuit breaker can be removed without removing  
the main harness.  
a. Pull the quick disconnect terminal out from the bottom of  
the circuit breaker, then remove the circuit breaker locking  
nut.  
s11.2  
s11.3  
SUNRISE MEDICAL  
2003  
ASPIRE SERVICE MANUAL  
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