Attic Louver Vent

Attic Louver Vent

Attic vent sunction fan?

The attic vent- whole house suction fan started thumping while running. It was the drive belt missing chunks of rubber. I replaced the belt from below in the living area not from attic access, I worked through the blades to re-string the new belt on the pulleys. Now the fan is quieter and even seems faster but the flapper louvers won't open when the louver box is placed against the running fan, they just open slightly. There's an adjustment spring allowing tighter closing force but nothing to help it open more when in place. Any thoughts please?
I even lubricated the ganged flapper with WD40.
I neglected to mention this fan is in the living quarters cieling and sucks air through open windows from the outside.

Maybe you bent one of the louvers while replacing the belt. Some early morning when it is still cool outside go up there and take a look - or maybe you can inspect it from the outside.

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14 w x 20 h ALUMINUM RECTANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $41.95

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24 w x 24 h ALUMINUM SQUARE GABLE ATTIC LOUVER END VENT 36 COLORS    US $77.95

24 INCH ALUMINUM OCTAGON GABLE ATTIC LOUVER END VENT 36 COLORS    US $67.95

18 w x 30 h ALUMINUM RECTANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $64.95

18 w x 18 h ALUMINUM SQUARE GABLE ATTIC LOUVER END VENT 36 COLORS    US $50.95

12 w x 12 h ALUMINUM SQUARE GABLE ATTIC LOUVER END VENT 36 COLORS    US $31.95

24 INCH HALF ROUND GABLE ATTIC LOUVER VENT MANY COLORS    US $66.95

22 w x 30 h ALUMINUM ROUND TOP GABLE ATTIC LOUVER END VENT 36 COLORS    US $87.95

18 w x 24 h ALUMINUM ROUND TOP GABLE ATTIC LOUVER END VENT 36 COLORS    US $65.95

14 w x 20 h ALUMINUM ROUND TOP GABLE ATTIC LOUVER END VENT 36 COLORS    US $50.95

30 w x 30 h ALUMINUM SQUARE GABLE ATTIC LOUVER END VENT 36 COLORS    US $121.95

22 w x 22 h ALUMINUM SQUARE GABLE ATTIC LOUVER END VENT 36 COLORS    US $64.95

24 w x 30 h ALUMINUM RECTANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $90.95

22 w x 30 h ALUMINUM RECTANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $73.95

18 w x 24 h ALUMINUM RECTANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $55.95

48 INCH ALUMINUM OCTAGON GABLE ATTIC LOUVER END VENT 36 COLORS    US $308.95

36 INCH ALUMINUM OCTAGON GABLE ATTIC LOUVER END VENT 36 COLORS    US $172.95

30 INCH ALUMINUM OCTAGON GABLE ATTIC LOUVER END VENT 36 COLORS    US $121.95

26 INCH ALUMINUM OCTAGON GABLE ATTIC LOUVER END VENT 36 COLORS    US $76.95

22 INCH ALUMINUM OCTAGON GABLE ATTIC LOUVER END VENT 36 COLORS    US $57.95

18 INCH ALUMINUM OCTAGON GABLE ATTIC LOUVER END VENT 36 COLORS    US $52.95

12 12 PITCH 48 BASE 24 HIGH TRIANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $122.95

12 12 PITCH 30 BASE 15 HIGH TRIANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $86.95

10 12 PITCH 60 BASE 25 HIGH TRIANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $159.95

10 12 PITCH 48 BASE20 HIGH TRIANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $117.95

10 12 PITCH 36 BASE15 HIGH TRIANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $102.95

8 12 PITCH 48 BASE16 HIGH TRIANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $103.95

6 12 PITCH 72 BASE18 HIGH TRIANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $138.95

6 12 PITCH 60 BASE15 HIGH TRIANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $118.95

6 12 PITCH 48 BASE12 HIGH TRIANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $93.95

6 12 PITCH 36 BASE 9 HIGH TRIANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $75.95

4 12 PITCH 96 BASE 16 HIGH TRIANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $193.95

4 12 PITCH 72 BASE 12 HIGH TRIANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $103.95

4 12 PITCH 48 BASE 8 HIGH TRIANGLE GABLE ATTIC LOUVER END VENT 36 COLORS    US $86.95

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