Internet Horology Club 185
992B Crown Wheel Threading Question

This topic can be found at:
https://ihc185.infopop.cc/eve/forums/a/tpc/f/254108073/m/8761056413

June 28, 2008, 09:53
Roger J. Nolfe
992B Crown Wheel Threading Question
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).
June 28, 2008, 11:13
Lindell V. Riddle

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
June 28, 2008, 16:50
Roger J. Nolfe
Thank You Lindell...both for the post and the phone call! I'm glad I asked before I did any damage.