Help needed to decode 42RH trans number

MoparLeo said
Post a picture.
chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.mymopar.com/downloads/transguide.pdf

Thank you. So much easier now I know where to look.

My trans starts PK 5300, so I think I need a newer document. I have had another look on the net but can only find the one you linked. Any suggestions?