Invacare Pronto M91 Service Manual

SECTION 8—WHEELS
Pronto
®
M91™and M94™ 84 Part No. 1125038
Removing/Installing the Drive Wheel
NOTE:Forthisprocedure,refertoFIGURE 8.5.
 WARNING
DO NOT use your wheelchair unless it has the proper tire pressure (p.s.i.). DO
NOT overinflate the tires. Failure to follow these suggestions may cause the tire to
explode and cause bodily harm.
If tires are pneumatic, replacement of tire or tube MUST be performed by a quali-
fied technician.
NOTE:Ifdrivewheelsorcastersarepneumatic,under‐inflationcausesexcessivewear,which
resultsinpoorperformanceofthetires.
CAUTION
Perform the following procedure in a designated work area to prevent damage to
flooring (carpeting, tile, etc.).
Removing
1. Removethefourbeveledhexnutsthatsecuresthedrivewheelassemblytothewheel
hub.
2. Removeexistingdrivewheelassemblyfromwheelhub.
Installing
1. Reinstallnew/existingdrivewheelassemblyontothewheelhubandtorquethefour
beveledhexnutsto160‐inchpounds.
2. Repeatprocedureforoppositesideofwheelchair,ifnecessary.
FIGURE 8.5 Removing/Installing the Drive Wheel
Beveled Hex Nuts
Drive Wheel Assembly
Wheel Hub

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"