husley
Bronze Level Site Supporter
2010 300, 46 hours on bike.
At about hour 30 I began to notice a small amount of oil floating on top of the coolant. I thought maybe it was left over from when the bike was assembled but every time I would remove the oil (used a syringe to suck the small amount off of the surface of the coolant below the cap) it would come back.
Some suggested a new head o-ring but most went with a new impeller seal (btw the tranny oil is fine).
Today I removed the old seal and replaced it, it was easy job. There was much more oil in the cooling system then I had anticipated. The old/original seal looked to be in excellent condition and I did not notice anything out of the norm that should of allowed this leak except........... that when I went to loosen the allen head that screws the impeller into the shaft it was already loose. The new seal was actually two seals, and the inside of the impeller holds pressure to hold these two seals together (imagine two donuts on top of each other with a pencil running through the hole). The two seals work together to create one seal which keeps the tranny and cooling system seperated.
So it appears that seals were just fine, it was just a loose impeller now holding the two seals tight together.
I will be keeping the old seal as a spare.
At about hour 30 I began to notice a small amount of oil floating on top of the coolant. I thought maybe it was left over from when the bike was assembled but every time I would remove the oil (used a syringe to suck the small amount off of the surface of the coolant below the cap) it would come back.
Some suggested a new head o-ring but most went with a new impeller seal (btw the tranny oil is fine).
Today I removed the old seal and replaced it, it was easy job. There was much more oil in the cooling system then I had anticipated. The old/original seal looked to be in excellent condition and I did not notice anything out of the norm that should of allowed this leak except........... that when I went to loosen the allen head that screws the impeller into the shaft it was already loose. The new seal was actually two seals, and the inside of the impeller holds pressure to hold these two seals together (imagine two donuts on top of each other with a pencil running through the hole). The two seals work together to create one seal which keeps the tranny and cooling system seperated.
So it appears that seals were just fine, it was just a loose impeller now holding the two seals tight together.
I will be keeping the old seal as a spare.
