Precor C764 Service Manual download pdf (Page 71)

C762, C764, C764i Stairclimber

Page 71

Procedure 7.16 - Replacing A Toothed Pulley

Removing the Toothed Pulley

If you are removing only one toothed pulley assembly, remove only one cover. It is not necessary

to remove both covers unless you are removing both toothed pulleys.

1. Remove the cover necessary to access the toothed pulley you are removing as described in

Procedure 7.1.

WARNING

Before continuing with this procedure, review the Warning and Caution statements listed in

Section One, Things You Should Know.

2. Press down the stair arm with one hand. With your other hand, grasp and pull the end of the

stairarm belt connected to the return spring. Release the stair arm. Remove the belt from

the toothed pulley and belt idler (refer back to Diagram 7.10).

3. Remove the retaining ring from the toothed pulley (see Diagram 7.15).

4. Remove the five thrust washers, toothed pulley, and wave washer from the sheave shaft.

5. If you are replacing only one toothed pulley...

THEN... OTHERWISE...

Continue with the next step. Repeat Steps 2 through 4 for the

second pulley; then continue with

the next step.

Replacing the Toothed Pulley

6. Visually inspect the thrust washers and the wave washer removed in Step 4 for wear or

damage. If the visual inspection indicates no wear or damage...

THEN... OTHERWISE...

Use the original washers when you Replace the worn or damaged

perform the following steps. washers with new washers when you

perform the following steps.

7. Slide a thrust washer, the wave washer, and three more thrust washers onto the sheave

shaft.

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Precor C764 Service Manual Page 71