1928 Brake Question

I have a question for anyone who has ever worked on the brakes of a

1927 or 1928 Hudson. I am reassembling the brakes on my 28 and hit a

snag. There is an arm from the frame to the backing plate that the

brake rod pivots to work the brakeshoes. This arm has a trunion(?)on

the backing plate side that inserts into a cup that bolts to the

backing plate. My question is, is the trunion pressed into the cup or

is there a pin or something that connects it to the cup? If anyone

knows, please let me know. Thanks, Jeff.
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