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Old 12-01-2000, 11:09 PM
be459 be459 is offline
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Join Date: Jun 1999
Location: Los Angeles, Calif, USA
Posts: 521
When is the large wrench needed? Here is my theory (never happen to me since I have the big wrench): The reason that you need the big wrench is to prevent the valve stem from turning while you are turning the small lock nut. If for some reasons, the small lock nut gets stuck to the valve stem, you loose the cap nut okay but you cannot move the small lock nut up or down for adjustment.

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