Invacare ARROW MWD - Manual (Page 78)

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NOTE: When installing the tubular end of the NEW sus-
pension arm, the beveled washer MUST be placed on
the inside and outside of the base frame, with the bevels
facing each other.
10. Secure tubular end of the NEW suspension arm as-
sembly to base frame with existing mounting screw.
11. Torque suspension arm mounting screw (1/2 x 7-
inches) to 85 FOOT pounds (approximately 1,020-
inch pounds) and replace plug buttons.
12. Reinstall the gearbox onto the existing suspension arm.
Refer to REMOVING/INSTALLING GEARBOX in this
procedure of the manual.
13. Perform one (1) of the following:
A. (GROUP 24) - Tighten the mounting screws that
secures the wiring harness and the battery sub-
frame to the base frame assembly.
B. (GROUP 22) - tighten the two (2) mounting
screws that secures the rear of the battery tray to
the sub-frame assembly.
14. Reinstall the drive wheel onto the wheelchair. Refer
to REMOVING/INSTALLING DRIVE WHEELS in
PROCEDURE 12 of this manual.
15. Repeat STEPS 1-14 for the opposite side of the
wheelchair, if necessary.
FIGURE 13 - REPLACING SUSPENSION ARM
STEPS 4,8, AND 9
Plug Button (STEP 5)
Mounting Screw (STEPS 6,10)
Beveled
Washer
(STEPS
6,10)
Hex Nut
(STEPS 6,11)
Mounting
Screw
Base Frame
NOTE: Top of shock and stabi-
lizer exploded away for clarifica-
tion purposes only. Removal from
base frame is not required.
Flat
Washer
Locknut
Inner Link
Spacer
Spring Washer
Tubular End of
Suspension Arm
Bracket End of
Suspension Arm
Bracket End of Suspension Arm
Stabilizer Bracket
Bottom of Shock
Tubular End of
Suspension Arm
(STEPS 6,10)
3. Remove gearbox from the existing suspension arm. Re-
fer to REMOVING/INSTALLING GEARBOX in this proce-
dure of the manual.
4. Remove the mounting screw, two (2) flat washers,
two (2) spring washers, two (2) inner link spacers,
and locknut that secures the bracket end of the sus-
pension arm, the bottom of the shock, and stabilizer
bracket together.
5. Remove plug button from the middle of base frame.
6. Remove the mounting screw and the beveled wash-
ers that secures the tubular end of the suspension
arm assembly to the base frame.
7. Remove the suspension arm from the wheelchair.
8. Position bracket end of NEW suspension arm around
shock.
9. Thread existing mounting screw through stabilizer
bracket, bracket end of suspension arm, and bottom
of shock with mounting screw, two (2) flat washers,
two (2) spring washers, two (2) inner link spacers,
and locknut. See DETAIL “A” for proper hardware ori-
entation.
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MWD WHEELCHAIRS PROCEDURE 15