If I recall correctly, there is a hex shaped pipe plug on the top of the rear of the tranny that doubles as a bearing support retainer and is pictured in this diagram as item #12. Once removed use a ā€œJā€ hook to coax it out.
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SM318 transmission breakdown

Last edited by Phak1; 04/17/2026 11:58 AM. Reason: Additional info

Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ā€˜59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
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