Can someone tell me the best specs for a 27mm socket (depth, etc.) to turn the crankshaft on a 602 engine? Ideally, I'd like to be able to do this without removing the fan. But I understand it's kind of tight in there.

Is 1/2" drive large enough for this?

Thanks.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 160k miles
06 E320 CDI "Rutherford", Black on Tan, 180k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 79k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife