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10. Apply Loctite 242 and torque the mounting screw that
secures the spacer between the battery mount bracket
and base frame. Torque to 160-inch pounds.
11. Reassemble large wheel to hub assembly and Torque
to 160-inch pounds.
12. Repeat this procedure for the opposite shock.
13. Reinstall the battery box. Refer to
INSTALLING/RE-
MOVING GROUP 22 BATTERY BOX in PROCE-
DURE 9 of this manual.
FIGURE 6 - SHOCK REPLACEMENT - GROUP 22
BATTERY BASE FRAMES
Shock
Base Frame
Flat Washer
Locknut
Spring
Washer
NOTE: Top of stabilizer exploded away for clarity only.
*NOTE: The spring shown on the stabilizer is for wheel-
chair models built before 7/1/1999
Inner Link Spacer
Mounting
Screw
Stabilizer*
Mounting
Screw
Stabilizer Bracket
Suspension
Arm
Battery Mount Bracket
B. (Group 22 Battery Base Frames) Loosen the
mounting screw that secures the battery box
spacer between the battery box tray mount bracket
and the base frame.
3. Remove the mounting screw that secures the top of
the stabilizer cylinder to the base frame.
4. Perform one (1) of the following:
A. (Group 24 Battery Base Frames) Remove the
mounting screw that secures the top of the shock
between the battery box sub-frame and the base
frame.
B. (Group 22 Battery Base Frames) Remove the
mounting screw that secures the top of the shock
between retainer clip and the battery box tray
mount bracket and the base frame.
NOTE: (Group 24 Battery Base Frames Only) Remove
and hold onto the retainer clip for reinstallation of shock.
5. Swing the top of both the stabilizer cylinder and the
shock forward.
6. Hold the spring retainer and turn the shock eyelet as-
sembly COUNTERCLOCKWISE to unthread it from
the shock.
7. Remove the spring retainer and spring.
8. Place the NEW spring onto the shock.
9. Reinstall the shock eyelet assembly and the spring
retainer onto the NEW spring.
10. While holding the spring retainer, torque the shock
eyelet assembly to 245-inch pounds.
11. (Group 24 Battery Base Frames) Position the re-
tainer clip between the shock and the battery box sub-
frame making sure the retainer clip mounting hole is
towards the bottom and the closed end of the clip is
against the battery box retainer.
12. Perform one (1) of the following:
A. (Group 24 Battery Base Frames) Apply Loctite
242 and torque the mounting screw that secures
the battery box retainer to the base frame to 160-
inch pounds.
B. (Group 22 Battery Base Frames) Apply Loctite
242 and torque the mounting screw that secures
the battery mount bracket to the base frame to
160-inch pounds.
13. Secure the top of the shock and retainer clip (Group
24) to base frame. Apply Loctite 242 and torque to
160-inch pounds.
SHOCK SPRING REPLACEMENT
(FIGURE 7)
NOTE: Heavy Duty Models Only. Shock springs on stan-
dard models cannot be individually replaced. A new shock
assembly must be installed. Refer to SHOCK REPLACE-
MENT in this procedure of the manual.
1. Remove the front battery box. Refer to
INSTALLING/
REMOVING GROUP 24 BATTERY BOXES or IN-
STALLING/REMOVING GROUP 22 BATTERY BOX
in PROCEDURE 9 of this manual.
2. Perform one (1) of the following:
A. (Group 24 Battery Base Frames) Loosen the
mounting screw that secures the battery box re-
tainer between the battery box sub frame assem-
bly and the base frame.
M
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MWD WHEELCHAIRS PROCEDURE 15