Reply To: TD20 Driveshaft Seal – Any experience with removal?

[John Gragg]

aquasonic wrote:

It looks like you got the entire seal minus a few tiny pieces of the rubber. If the new seal fits, then the sleeve that you mention must have been by design. Those original seals were well made. Does it have the work “GARLOCK” on the seal?

In the last picture, the sleave looks to be a little out of round maybe from trying to pry it out. If you can reach it and it’s clean, a few carefully placed drops of loktite around the outside radius of both seal and sleeve might provide additional protection from water intrusion.

Yes, Garloc seal for sure. Pic attached. Also a better view of the inside of the seal I removed. I’m really on the fence about trying to replace the seal on my ‘actual’ gearcase. Reminder, this is all happening on my spare gearcase, as a ‘test’ since I was so nervous about replacing it because of the remote location of the seal. If I mess this up, I’m kinda up a creek.

I’m on the fence on whether to try to replace it on my working gearcase or not. I wish I had taken pics of the empty spot after I pulled the old seal…

FYI – My ‘working’ gearcase has a “CR” seal, part # 307563.

I have ‘tested’ the seal by putting the driveshaft in place, filling the cylinder with colored water and rotating the shaft. No leaks into the gearcase. Do you think I’m good?

Thanks –

John Gragg
RIverside, CA

Just starting in the hobby, please be patient.

48 Sea King 5hp GG9014A. Sold
49 Sea King 5hp GG9014A
48 Johnson TD20. Sold
49 Johnson TD20. Sold
54 Johnson QD15. Sold
55 Johnson CD12. Sold
57 Johnson RJE-19M
57 Johnson RDE-19