TST Products offers a complete kit to tab your dowel pin. Be sure to remove the four mounting bolts that you can reach directly. Two are behind “windows” in the cam gear, one is next to the dowel pin, and one is above the gear-driven oil pump. The fifth is below the two behind the cam gear and also behind the gear, but offset outwards so you will have to heat and bend an open-end 10 mm wrench so it can reach in there and tighten that bolt. The other four will get cleaned with solvent, as will the holes (I recommend Mopar non chlorinated brake cleaner as it evaporates much better than other brands). Then, blue Loctite the bolts and torque to 18-22 ft lb. Factory recommendation is 18, but I like a bit more. On the First Generation Turbo diesels, and second Generations up to 1996, there is no sealer on the threads and the bolts can vibrate out. If the washer head gets between gear teeth, you can break the block, etc. So, this problem can be much worse than the dowel pin that is too big to get between teeth and just breaks the gear case.