Remove the timing gearcase cover. (See Timing Gearcase Cover Removal And Installation on Page 70-100-7.)
Remove the idler gear. (See Idler Gear And Camshaft Removal And Installation on Page 70-100-9.)
Remove the crankshaft gear with a puller [Figure 70-100-46].
Remove the crankshaft key.
Installation: Install the crankshaft key. Heat the crankshaft gear to 176°F (80°C) and fit it on the crankshaft.