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6.6 TROUBLESHOOTING - NOISE ISSUES
KNOCKING OR CREAKING NOISES
CHAPTER 6: TROUBLESHOOTING
POSSIBLE CAUSES:
1) The pedal is connected to the link arm too loosely.
2) The pedal arm is connected to the link arm too loosely or the connection is missing the washers.
3) Belt tension is too loose, or belt is dirty.
4) The crank bearings are damaged or worn out.
5) The link arm bearings are damaged or worn out.
SOLUTION:
1) Clean and tighten the belts.
2) Tighten the connections between the pedal and link arm (Figure A).
3) Tighten the connections between the pedal arm and link arm, and check to see that the washers are not missing (Figures B & C).
4) Replace the crank.
5) Replace the link arms.
FIGURE A FIGURE B
FIGURE C
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