Invacare Pronto M91 Service Manual

SECTION 9—SHROUDS/FRAME
Pronto
®
M91™and M94™ 92 Part No. 1125038
Removing/Installing the Walking Beam Assembly,
Stability Lock Assembly and/or Swing Arm
NOTE:Forthisprocedure,refertoFIGURE 9.3onpage94.
NOTE:Takenoteofpositionandorientationofthestabilitylock,swingarmandmounting
hardwarebeforeremoval.
Removing
1. Removetheseat.RefertoRemoving/InstallingorTiltingtheSeatAssemblyon
page 35.
2. Removethebatteries.RefertoInstalling/RemovingtheBatteriesonpage 103.
3. Removethedrivewheel.RefertoRemoving/InstallingtheDriveWheelonpage 84.
4. Removethesideshroud.RefertoRemoving/InstallingtheShroudsonpage 88.
5. Removethemotor.RefertoRemoving/InstallingtheMotoronpage 98.
CAUTION
Use caution when removing tension from the extension spring - otherwise, injury
may result.
6. Useascrewdrivertoreleasetheextensionspringfromthespringmountontheswing
armassembly.Removetheextensionspringfromthepivotplateandsetaside.
CAUTION
Use extreme caution when removing tension from the torsion spring - otherwise,
injury may result.
7. Useascrewdrivertoreleasetheendofthetorsionspringrestingonthepinonthelock
plate.
8. Removethelockplate.Allowthetorsionspringtorestinplace.
9. Removethewalkingbeammountingscrew,washerandnutsecuringthewalking
beamassembly,torsionspringandspringspacerto
theframe.
10. Removethetwomountingscrewssecuringthepivotracktothepivotlink.
11. Removethepivotrackfromthepivotlink.
12. Removethefrontmountingscrew,twonylonwashers,O‐ring,cuppedwasher,
locknutsecuringthepivotlinktothewheelchairframemountinghole(Detail“C”of
FIGURE 9.3).
13. Removethelongshoulderscrewandlocknutsecuringthepivotlinktotherearframe
mountinghole.
14. Performoneofthefollowing:
•RemovingtheStabilityLockAssemblyHardwareONLY‐
i. Remov ethe twoshoulderscrews andonewashersecuringthe motorracktothe
walkingbeam.

Invacare Pronto M91 Specifications

Power and Performance

maximum speed	6.5 mph / 4.5 mph
incline capability	9˚
weight capacity	300 lb. (400 lb. option)

Wheel and Caster Sizes

front casters	6" x 2"
drive wheels	14" x 3"
rear casters	6" x 2"

Weight and Dimensions

length with footboard up	39"
length with footboard down	40" - 42"
width excluding joystick	25.9"
height	37" - 48"
seat width	18" - 22"
seat depth	16" - 20"
overall height	37" - 40"
back height	18"
seat-to-floor height	21" - 23"
weight with batteries	273 lb.
weight without batteries	199 lb.
wheelchair mass	275 lb.
turning radius front	19.5"
turning radius rear	21.5"
ground clearance	3.25"