After 10 years and 66,000 miles it's about time, especially as one of the oil seals is leaking slowly.
appears to be removal of the crankshaft pulley bolt.
Is it feasible to loosen the crankshaft pulley bolt from above? (The Haynes manual shows a large breaker attached from below.) Is it safe to "wedge a large screwdriver ... into the ring gear teeth"? Is there a safer technique to hold the ring gear?
Also the Haynes says to remove the spark plugs. Is spark plug removal necessary? Is the point of removal only to facilitate manual crank positioning?
Thanks, Gordon