stuck water pump housing

[piperjomo]

i'm trying to replace the impellor on my 1968 3hp evinrude yachtwin.
it looks like it has never been removed and is salted and well stuck in the lower unit.
I've soaked it in penetrating oil for a few days. I tried soaking it in very hot water as well.
Other than semi brute force to try and free it can anyone suggest a method.
thanks

 

[tashasdaddy]

Re: stuck water pump housing

try a little heat, propane torch. and tap with a hammer.

 

[kenmyfam]

Re: stuck water pump housing

Patience is a virtue with these scenarios.
Heat it, tap it, soak it, heat it, tap it, soak it. try with a rubber mallet to begin with but most likely you will have to "shock it" with a hammer to get it to move.
Good Luck.

I have found that brake fluid is a pretty good penetrant when left to "soak in"

 

[psteurer]

Re: stuck water pump housing

Agree with the methods. The brake fluid is a good cheap way to do this. If you want to make it a better penetrate, mix in 50% acetone. There was an article a few years back that rated penetrating oils. A 50/50 mixture of acetone and power steering fluid came out on top (there was some confusion as to whether brake fluid or power steering fluid was used.) I have used the PS/acetone mix with a lot of success. Here is an extract from the article.

"The April/May 2007 edition of Machinist's Workshop did a test of penetrating oils where they measured the force required to loosen rusty test devices. Buy the issue if you want to see how they did the test. The results reported were interesting. The lower the number of pounds the better. Mighty interesting results for simple acetone and tranny fluid!

Penetrating oil . Average load .. Price per fluid ounce
None ................. 516 pounds .
WD-40 .............. 238 pounds .. $0.25
PB Blaster ......... 214 pounds .. $0.35
Liquid Wrench ... 127 pounds .. $0.21
Kano Kroil ........ 106 pounds .. $0.75
ATF-Acetone mix.. 53 pounds .. $0.10

The ATF-Acetone mix was a 50/50 mix (1 to 1 ratio)."

 

[kbait]

Re: stuck water pump housing

An impact driver might do the trick after the other methods fail. Better than just twisting it off w/o trying, anyway.

 

[piperjomo]

Re: stuck water pump housing

Thanks for the help, its now off - damaged the edge , but a bit off jb marine weld will fix that.
I like the suggestion to use brake fluid and acetone as a freeing agent.
Regards to all

 

[kenmyfam]

Re: stuck water pump housing

Thanks for the help, its now off - damaged the edge , but a bit off jb marine weld will fix that.
I like the suggestion to use brake fluid and acetone as a freeing agent.
Regards to all

Och Aye !!

 

[piperjomo]

Re: stuck water pump housing

Och Aye !!

Och Aye the noo - A Scot in Ontario?

 

[bktheking]

Re: stuck water pump housing

How about almost every ethnic race in Ontario!

I'm 1/2 irish!

 

[piperjomo]

Re: stuck water pump housing

How about almost every ethnic race in Ontario!

I'm 1/2 irish!

Nae luck

 

[kenmyfam]

Re: stuck water pump housing

Och Aye the noo - A Scot in Ontario?

Liverpool actually but don't hold that against me !!!!
I have many Scottish friends.
They are all "canny lads and lasses"

Celtic, Rangers or who ???? and where in Bonnie Scotland are you ??

 

[piperjomo]

Re: stuck water pump housing

Liverpool actually but don't hold that against me !!!!
I have many Scottish friends.
They are all "canny lads and lasses"

Celtic, Rangers or who ???? and where in Bonnie Scotland are you ??

Bonnie Scotland is not so bonnie just now, terrible weather.
Based in Glasgow which is handy for the water off the west coast.

 

[Home Cookin']

Re: stuck water pump housing

The meanest trick the Irish ever played on the Scots, was telling them that the bagpipe is a musical instrument.

(Scotch Irish myself, out of McGregor and McAlpine)

 

[piperjomo]

Re: stuck water pump housing

The meanest trick the Irish ever played on the Scots, was telling them that the bagpipe is a musical instrument.

(Scotch Irish myself, out of McGregor and McAlpine)

xxx