Hey y’all

I’ve got an engine on a stand an Om602. Basically stripped down to the long block. My mission is to change the out everything under the timing cover and the cracked cover itself and a new shaft seal.

I’m having a time finding a way to lock the engine so I can slack off the shaft bolt and remove the balancer.

Can anybody help me out with a tip, trick or tool to get this done?

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Current fleet
2006 E320 CDI
1992 300D - 5speed manual swapped

former members
1984 300D "Blues Mobile"

1978 300CD "El Toro"