There is a left handed thread and a right handed thread on the arbors.
Double nut is the preferred method.
OR
Removal
Right Hand Side (RH)
Wrap a piece of rubber or leather around the threads on the LH side of the arbor & hold with pliers, while turning the RH nut CCW.
Left Hand Side (LH)
Wrap a piece of rubber or leather around the threads on the RH side of the arbor & hold with pliers, while turning the LH nut CW.
Installation
Note: Hand tighten the nut, then 1/4 turn.
Right Hand Side (RH)
Wrap a piece of rubber or leather around the threads on the LH side of the arbor & hold with pliers, while turning the RH nut CW.
Left Hand Side (LH)
Wrap a piece of rubber or leather around the threads on the RH side of the arbor & hold with pliers, while turning the LH nut CWW.
For grinding stones:
GRINDER SAFETY 101 (graphic injury video so be warned)
http://www.garagejournal.com/forum/showthread.php?t=263083
Hi edward, looks like you posted the same question twice. I already answered the other one. good luck.
Removal & Installation
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