I don't know for certain about anything, but this should be standard counter clockwise is removal NOT LEFT threaded. Just in general, watch out for fasteners on anything that turns in unknown cases.
Notes from the past and present: Left hand threads are found on MANY older cars left side wheel lugs - some foriegn cars used left hand threads on axle bearing nuts (VW bug orig version) ---- fans for heater, cooling system radiator fans and who knows with some of the cars now with names I can't even recall sold to the US and some that never were which I would know little about.
Seems most "American" stuff avoids using left handed threaded anything unless absolutely necessary and instead on pulleys and things that would matter used pressed on things and avoid that altogether as it was an era of confusion back when....
T
Tom Greenleaf - MetroWest Boston - USA
http://www.acsource.com/ _________________________________________
http://www.autoacsystems.com/tomgreenleaf/