59 Johnson Seahorse 35 Shift Linkage Seal

[Wave1960]

Looks like the common way to remove shift linkage seal is to drill and tap brass bushing. It is located fairly deep in the housing, but I assume long bit and extention for tap. It sits about 8" in from gearbox side.

1. I am aproaching this correctly?
2. Reuse old bushing? (None in rebuild kit)
3. Any tricks I need to know?

Thank you in advance for everyone's help

 

[titaniumneck]

Got pictures, I've worked on a couple of older Johnson seahorses. From 60's.

 

[racerone]

hThere is a tool available to drive it out.----Or just run a 5/16-NC tap in for 3 threads and pull it out.---Or I have replaced that o-ring without removing the bushing.----Some will say that the latter can not be done.

 

[Wave1960]

Also.... along these lines.....the new prop shaft seal and drive shaft seals look much more lightweight. They fit but have less metal and rubber.

 

[HighTrim]

Simply take a 3/8" OD Rod, about 24" long or so, and grind down the tip to 1/4". Use this to drive out the bushing. Yes you can re use the bushing.

Picking at the oring will only damage it without removing the bushing. Always remove the bushing. The bushing compresses the o ring in the cavity, which seals it to the shift rod shaft. Ill post some pics of a tool I made up quickly.

 

[HighTrim]

I cannot seem to locate the picture of my tool, ill go take another. Here is a stepped tool not made by me.

 

[Wave1960]

Nice! I can see how that would make the task way easier! Thank you so much!

Dave

 

[lindy46]

With the tool, a couple whacks and the bushing is out without any damage.

 

[Wave1960]

No Title

As it turned out either by modification or by design, the ID of brass bushing and the body of lower unit were identical so the tool was a no go.

I threaded bushing to 5/16" 24t. Not fun..... I went fine thread due to not wearing glasses as opposed to being a stroke of genius. I do think this may help put less torque on threads but of course.... shallow threads. No 7" x 5/16" bolts available so attached a stud to a 4.5" x 5/16" 18t bolt. Soaked in penetrating oil....... not so bad after all the screwing around.