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992B Crown Wheel Threading Question "Click" to Login or Register 
IHC Life Member
posted
Most crown wheels are left hand thread. I just want to confirm that the Hamilton 992B crown wheel is also a left hand thread screw (turn right to loosen).
 
Posts: 1078 | Location: Ticonderoga, New York USA | Registered: March 01, 2008
IHC President
Life Member
Picture of Lindell V. Riddle
posted

HOLD ON ROGER! Smile

I believe you will find every screw in the 992B and other watches related to it like 950B, 2974B, 3992B and 4992B are "right-hand-thread" meaning clockwise to tighten and anti-clockwise to loosen the screws. Quite a change from previous movements!

That along with other information is included in the Hamilton Technical Bulletin on these watches...

http://library.ihc185.com/cata...1946TECHBULLETIN.pdf

You can print your own copy if you like!

That is a small part of available materials you support with IHC185 Membership.

Hamilton Movement Numbers and Hamilton Horology Reference Materials

Lindell

Wink
 
Posts: 10553 | Location: Northeastern Ohio in the USA | Registered: November 19, 2002
IHC Life Member
posted
Thank You Lindell...both for the post and the phone call! I'm glad I asked before I did any damage.
 
Posts: 1078 | Location: Ticonderoga, New York USA | Registered: March 01, 2008
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