Cardiac Stress Treadmills Service Manual Repair/Replacement and Calibration 4-23
4. Adjust the belt tension and tracking.
5. Adjust the rear roller guards.
Removing the Deck
1. Remove the deck assembly including front and rear roller assemblies
as previously described in “Removing the Deck Assembly from
Headframe” on page 4-22.
2. Remove the Phillips screws holding the deck to the deck frame, then
remove the deck.
♦ The two front screws are longer and attach to the drive pulley cover
underneath the treadmill.
3. To replace the deck, follow steps 1-2 in reverse order.
4. Adjust the belt tension and tracking.
5. Verify that the gap between the rear roller guards and the rear roller
does not exceed three-eights inch (3/8”). Adjust as necessary.
Adjusting the Walking Belt
Belt Tension
Adjust the walking belt tension:
• whenever the belt slips or moves unsteadily during operation.
• after installing a new walking belt.
• each time you remove or replace the walking belt or deck.
Two adjustment methods are specified. Method 1 is preferred, but two
belt tension calipers are required.
♦ Both adjustment screws must be completely slack before starting this
procedure.
Method 1: Using Calipers
1. Turn both tension adjustment screws clockwise until most of the slack
is removed from the belt.
♦ Do not stretch the walking belt at this point.
2. Position one caliper on each side of the belt, approximately 18 inches
from the rear roller assembly.
3. Grasp the belt with one caliper clamp.
4. Pull the slack out of the belt with your fingers, then grasp the belt
with the second clamp.
5. Repeat steps 4 and 5 on the other side of the belt using the other
caliper.
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