Clam shell question

[Steve Plucker]

Originally Posted by 160B

RG&JS page 4-4 & 4-15 Revised 2011

Beginning of production through December 1927 Both the upper and lower caps were forgings.

There were two types:

Type 1 - The upper cap had a safety lug with a raised rib going up the center of the lug. The lower cap had a "T" shaped raised area.

Type 2 - The upper cap had a welded on safety lug with no raised rib. The lower cap had a "D" shaped raised area where the safety lug was not
welded on.

Don,

It is Type 3 that Greg has...only used from Mid-October 1928 thru Mid March 1929.

Also see the June 1929 Service Bulletins for more information.

Pluck