Exhaust Elbow Removal

Tash329 · #1 08-05-2010, 06:44 PM

Question: I've soaked the exhaust elbow on my Kohler 10hp for several days now with penatrating oil, the locking nut still won't budge and I don't want to break the cast block by repeated beatings from hammer and punch. Should I 1) keeping using the penatrating oil & for how long? 2) use heat and how much (till it glows) or will that wrap the block. Or is there a better way? I would use air tool but no gots. I feel like at newbie at this------OH I am.:biggrin2.gif:

TEET · #2 08-05-2010, 06:56 PM

I just removed the crusty, rusty elbow from my 73 last week. I soaked it with PB Blaster for a few days then whacked away at one of the tangs on the lock nut with a chisel, it wouldn't budge. With a little more whacking, I was able to split the nut, remove it, and get some more blaster into the threads of the elbow itself....big ol pipe wrench with a pipe on the handle for leverage, and voila...its off. I would soak it good for a few days and try again.

Jeff (teet)

gcbailey · #3 08-05-2010, 07:02 PM

big pipe wrench.... big set of channel locks.... or big set of vise grips. Get the vise gripes locked on the nut and then bang at the vise grip...

My Original was the same way. I put PB on for a few days, and also used CRC.

johncub7172 · #4 08-06-2010, 12:22 AM

I know I had to get fancy a time or two with my dremal tool w/ cut-off disk. You can make like a doctor and cut away, then 1 hit from the punch should work.

tinkerin tim · #5 08-07-2010, 11:18 AM

Hi Tash,
I just removed the elbow on mine. I soaked it with Kroil (better than PB Blaster), then I took a utility knife and actually cut(0r tried to) around the lock ring. You can actually get the blade in some places. Then sprayed more kroil. Then I took a chisel and whacked the ring and it moved freely. Then I put the largest punch I had(it just fit into elbow) and whacked that with a hammer until it screwed out.

I think that cutting around the ring really helped.

Hope this helps

Tim

jeffscub · #6 08-07-2010, 01:56 PM

Quote:

Originally Posted by tinkerin tim

Hi Tash,
I just removed the elbow on mine. I soaked it with Kroil (better than PB Blaster), then I took a utility knife and actually cut(0r tried to) around the lock ring. You can actually get the blade in some places. Then sprayed more kroil. Then I took a chisel and whacked the ring and it moved freely. Then I put the largest punch I had(it just fit into elbow) and whacked that with a hammer until it screwed out.

I think that cutting around the ring really helped.

Hope this helps

Tim

i did almost the same thing, but i used a VERY tiny and thin file and after a few good whacks, it came off without a hitch. jeff

Tash329 · #7 08-08-2010, 05:37 PM

Thanks for all the great advice guys. I like Kroil, I use it on my guns. I'll give that a shot. I've never used PB Blaster but I see it mentioned alot. I use a mixture of ATF & Acetone as a penetrant. I can't report one way or the other on it, but its hailed as a good one. I'll report back in several days as to the outcome.

Rich