does anyone have access to blueprint for sprocket seals part # L972 and L873 i need blueprints for both of them thanks for any help.

Are you looking for parts for the bellows seals? What serial number? There were some changes in the 22 finals. I can't find that part number in my book, do you have a page # they are shown on?

dont know it is part # someone gave me

A better explanation of what you are trying to do, along with some photos would probably help. Like I said, I checked and didn't find that part #'s anywhere near the sprocket on both the PV 15's, 22's, or D2 U series. I don't have a j series book though. Maybe someone else can ID what your part numbers really are?

I assume You are after the Cork Gaskets to Go on the 3B5762 Bellows Ass. and they are V191 and V192 .My book covers all 22's and they are the same Number right Through even for the D2-R2 .We bought these from Cat not long ago. I believe Olsen's supply these also . You can't get the 3B5762 from Cat [or Couldn't ] maybe there is an after market one available but I am not aware of it . Be very careful removing Old Bellow Seals. there are 2 locating studs on Housing to remove First . Those 2 gasket Numbers would upgrade to 0V0191 and 0V0192 and use a top quality Adhesive .Check Your Wear washer V-237 if showing wear, reverse it . If it is worn on both sides better look for some good second hand, otherwise it will be a wasted Exercise .
Those "L" numbers look more like of a Cat 20 but not sure . Let Us knowhow you get on .Maybe a Picture for Us to ID would help LJ