A Bolt/Washer/Nut Combo can work for extracting the Rail Pins. The Pulleys on end of Cams are bolted on. Best to loosen slightly, before Chain removed.
Hopefully you have a factory M110 Manual. Remember the M110 is an interference Motor, so take proper steps to avoid bending a Valve Stem with the Cam R&R stages

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83 280TE- 5 spd, 16.5mm rear sway
85 280SL- 15" Bundts, 5 spd