There are 2 felt pieces that fit on the ends of the support assy. ( cast aluminum piece that fits the gap between crankshaft and oil pan. Middle bolt of the oil pan threads into) , and the timing cover gasket. But, oil appears to be coming from higher up, and more on center.
Without seeing pictures from up top, I'd suggest getting a good bright flashlight, or trouble light, and look behind the crankshaft pulley, and look for oil. There is a seal in the timing cover, that the shoulder of the crankshaft pulley rides in. Just taking a wild guess, I'd say the new seal was installed, but those crankshaft pulleys get a slight groove worn in them, from thousands of hours of run time. If worn enough, it will still leak with a new seal installed. No need to buy a new, or different pulley with less wear. They do make a timing cover seal kit with a wear sleeve, that fits on the shoulder of the crankshaft pulley. Although there are some less expensive, here is a link showing one, so you have an idea what I'm talking about.
378193R91 Front Crankshaft Seal Fits Case IH 130 140 230 240 330 240 Fits Cub Lo 378193R91 Fits Case IH, IHC, International Harvester - Free Shipping Here's one for like $12 less, but doesn't have a picture. All are aftermarket parts, and probably come from the same main supplier across the pond.
Front Crankshaft Seal with Wear Sleeve fits International Cub Lo-Boy 340 Cub 230 100 330 130 Super C 240 140 200 378193R91
That's more than likely where the original oil leak was anyway. I've used 2 of those seal kits in the last 3 years on my new to me 130, and 140 Farmalls, that also use the C-123 engine used in the Super C. It's just the nature of the beast, but did solve the oil leak problem.
