colinf Posted July 25, 2021 Report Share Posted July 25, 2021 Hi all, in the process of rebuilding the 191 engine.I've just gone through all the packs of seals and "O" rings to identify them all and have a couple of queries. The "O" ring set ( or the O rings with full gasket set ) comprises of 5 rings. The two large ones are No.54 on the engine illustration in the parts book (260-011) ,the smallest is No.20 on the gearbox illustration (111-028-1) which leaves two 25mm ones. One of these is No.17 on the gearbox illustration (111-025-1) but i can't see what the other one is for.......probably missing something obvious! The other problem is with an oil seal ( part No. 160-031, 14x20x3 ). This is No.45 on the gearbox illustration.I assumed this fits over the left hand end of the mainshaft and inside the outer end of the sleeve gear.The inside diameter is a good fit over the mainshaft but i don't think the outside diameter will fit in the sleeve gear. The seal O/D is 20mm but the I/D of the sleeve gear is 18mm! Again ,i could be missing something obvious! Any suggestions would be appreciated. Quote Link to comment Share on other sites More sharing options...
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