Thrashing/knocking noise from under front engine cover. Not alternator belt. Taking front cover off to check timing chain and tensioner, and anticipating having to lock engine at TDC to remopve pulley and if sprockets and chain have to come off.
Thanks for link Hank. Did think about drill bit Steptoe, but want something with a bit of length and an angle or two in it, as the hole is a bit difficult to access. Figuratively speaking...