C776i Stairclimber
Page 45
Procedure 7.11 - Replacing the Primary Drive Belt
1. Remove the primary sheave per Procedure 7.9, steps 1-9.
2. Remove the secondary sheave per Procedure 7.10, steps 2-4.
3. Set the primary sheave inside the replacement primary belt then set the primary sheave in
its mounting position. Insert the four mounting bolts, removed in step 8 of procedure 7.9,
through the flanged bearing assembly and the frame. Hand start the four mounting nuts on
the mounting bolts. Torque the mounting nuts to 120 inch pounds.
4. Slide a thrust washer onto one of the primary sheave shafts, then a wave washer and then
three more thrust washers.
5. Slide one of the HTD pulleys onto the shaft. Verify that it rotates as described in step 4 of
Procedure 7.7. Slide another thrust washer onto the shaft. Fasten the HTD pulley with the
retaining clip removed in step 5.
6. Replace the remaining HTD pulley as described in steps 11 and 12.
7. Place the replacement primary belt along with the generator belt around the replacement
sheave. Set the secondary sheave in it mounting position. Hand start both secondary
sheave tension adjusters.
8. Tension both the primary belt and generator belt per Procedure 5.2.
9. Replace the left hand, right hand and rear covers per Procedure 7.1.
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