Invacare MVPS Owners Manual - Page 56

SECTION 8 WHEEL LOCK/ANTI-TIPPERS WHEEL LOCKS/ANTI-TIPPERS Section 8 - Wheel Lock/Anti-Tippers includes the following: Replacing/Adjusting the Wheel Lock Installing/Adjusting the Anti-tippers WARNING After ANY adjustments, repair or service and BEFORE use, make sure all attachment hardware is tightened securely - otherwise, injury or damage may result. REPLACING/ADJUSTING THE WHEEL LOCKS (FIGURE 1) NOTE: Undermount wheel locks are for FIXED FRONT FRAME wheelchairs only. NOTE: Before adjusting or replacing the high/undermount wheel locks, ensure that the tires are inflated to the recommended psi on the sidewall of the tire. REPLACING THE WHEEL LOCK 1. Remove the hex screws and remove the existing wheel lock from the wheelchair. 2. Install the new wheel lock and secure with the existing hardware. ADJUSTING THE WHEEL LOCK 1. Engage the wheel locks. NOTE: Any wheel lock adjustment should embed the wheel lock shoe at least 3/16-inch into the pneumatic tire (1/8-inch for urethane wheels) when engaged. 2. If necessary, loosen the hex screw(s) that secure the wheel locks to the wheelchair frame and adjust position of the wheel lock until the 3/16-inch (1/8-inch for urethane wheels) measurement is obtained for correct wheel lock adjustment. 3. Securely tighten the hex screw(s). 4. Engage the wheel locks and push against the wheelchair and determine if the wheel locks engage the wheel locks enough to hold the wheelchair. 5. Repeat the above procedures until the wheel locks hold the wheelchair. Hex Screws Hex Screws Hex Screws Clamp High Mount Wheel Lock Wheel Lock Shoe 3/16-inch (1/8-inch) Under Mount Wheel Lock 3/16-inch (1/8-inch) High Mount / Under Mount Thumb Saver Wheel Lock Thumb Saver Wheel Lock Tire Wheel Lock Shoe Shoe Tire FIGURE 1 - REPLACING/ADJUSTING THE WHEEL LOCKS MVP™ & MVP jr.™ 56 Part No. 1106638