Replacing through bolt seal

[axl911]

Hi all,

I've strip my 3.6 engine down to the short block. Now, I want to replace the through bolt seals that are leaking. My question is that, can I remove the through bolt completely to replace the seal on both the nut and bolt sides? I want to do this one through bolt at a time, replacing the seals on both sides, then torque the bolt back to spec and move onto the next one.

Does this sound okay?

thanks,
anthony

[john walker's workshop]

you can do that. use the tough green seals. don't even bother with the wimpy blue ones.

[ChrisBennet]

Check out this recent thread First time rebuilder gaining momentum! for info on replacing the through bolt O-rings.
-Chris

[Don Settergren]

Absolutely push the gasket over the threads onto the larger shaft portion of the case bolt, otherwise the threads will chew up the o-ring like a tasty lunch!

I wonder if you should do them in the same order as the tightening sequence...? I can't hurt.

[axl911]

Thanks for the info. My main concern was that if pull the through bolt out, BAD stuffs will happen.

---anthony

[ChrisBennet]

Make sure you get old O-rings out. When you pull the thru bolt out, the O-ring closest to the end may come off inside the motor. It wouldn't hurt to run a plastic gun cleaning brush or a long handled bottle brush through the thru bolt passage to clean it out.
-Chris

[john walker's workshop]

for an installation sleeve, to protect the o-ring from the threads, i went to a hobby shop and found a thin brass tube that just fit over the threads, and cut off a couple of inches with a tubing cutter. the tubing cutter rounds the end of the tube in the process, which makes it easy for the o-ring to slip over.

[Groesbeck Hurricane]

I put tape over the threads and then ran the O-ring over the tape.