Precor C960 Service Manual page 64

Replacing the Roller Bearings and Shaft
You will need an assistant to perform the following steps.
14. Have an assistant support the roller against a work surface. One end of the roller must be
flush with the work surface.
15. Place a bearing on the roller, then position the bearing replacement tube against the outer
race of the bearing
Note:
A ten inch length of 2 inch O.D. pipe with a cap threaded onto one end, will serve as a bearing
replacement tool. The open end will be placed against the bearing and the end with the capped
end will be struck with the hammer.
.
CAUTION
The bearing must go squarely into the roller tube. If the bearing is not square in the roller tube,
you will be unable to insert the bearing.
16. Set the roller tube on a solid work surface. Place a new bearing in the bearing pocket on one
end of the roller tube. Using the bearing replacement tool and a hammer or mallet, gently
tap the bearing into the tube. The bearing will be below flush and the snap ring groove will
be exposed when the bearing is properly set into the roller tube.
17. Using the snap ring pliers, install the snap ring.
18. Place a wave washer onto roller shaft. Slide the roller tube down over the shaft until the end
of the shaft protrudes through the bearing. Invert the roller tube while holding the shaft in
place. Set the roller tube on a block of wood as shown in Diagram 6.8.
Diagram 6.8 - Replacing the Roller Bearing
C960 Series Commercial Treadmill
Page 64