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PREVENTIVE MAINTENANCE PROCEDURE

CHALLENGER Series II Bulletin No. PH7

Procedure Information (Cont.)

6. Adjust the 1/4”-20 X 1-1/4” allen head cap screw in a

clockwise direction to increase the tension on the timing belt.

Generally, this will only be a slight adjustment, perhaps 1/4

to 1/2 turn of the screw. (See illustration at right)

4. Using a 1/8” allen wrench, remove both the left and right

dust covers by loosening the three 10-24 X 3/8” button head

allen screws.

5. Using a 3/16” allen wrench, loosen the two 5/16”-18 X

3/4” button head allen screws on the tension bracket

assembly. (See illustration at right)

7. Re-tighten the 5/16”-18 X 3/4” button head allen screws.

8. Re-install both the right and left dust covers using the 10-

24 X 3/8” button head allen screws.

081200MS

102

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M&R CHALLENGER II Series Specifications

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