need help.. Easy for you guys..

[floatingwoody2006]

Hello.. Im looking to install a water pump kit in my 1971 18 horse evinrude. I have yaken out the 4 lowest bolts..Seen here<br /> http://i40.photobucket.com/albums/e224/drkilldrmz/Picture024.jpg <br />and need to knoe if this bolt here<br /> http://i40.photobucket.com/albums/e224/drkilldrmz/Picture023.jpg <br />needs to come out also.. Seems very stuck, and i dont want to break it off..<br />Also.. If anyone could provide a water pump kit part# that would be great.. Napa shows only the 20 horse, and im pretty sure they would be the same.. I do have a manual on order by the way, just waiting for pay pal to go thru.. Thanks

 

[Walker]

Re: need help.. Easy for you guys..

Yep, needs to come out. Sometimes that bolt becomes corruded its full length and is a bugger to get out. Use heat liberally

 

[floatingwoody2006]

Re: need help.. Easy for you guys..

am i totally out of luck if it snaps?.. Its in there like a rock...

 

[MCM]

Re: need help.. Easy for you guys..

Woody, I would say yes, That bolt connects through the long shaft extension housing into the gearcase.<br /><br />See diagram web page<br /><br />The OEM p/n for the kit is 0382468, thE aftermarket Sierra/NAPA p/n is 18-3377

 

[floatingwoody2006]

Re: need help.. Easy for you guys..

Thanks guys.. I really hope i dont snap it off, but i need to replace the impeller for sure..keep your fingers crossed for me..

 

[MCM]

Re: need help.. Easy for you guys..

Try a liberal amount of PB-Blaster and give it some time to work, that stuff is awesome. I'm currently dissassembling an 80 year old salt water motor and have yet to break or damage a bolt, screw or nut

 

[floatingwoody2006]

Re: need help.. Easy for you guys..

It has been soaking in Pb blaster for around an hour now..Im just worried it may be corroded the lenth of the bolt inside...Also.. im working in the cold, so i guess i should heat the entire area for awhile so nothing is brittle...Thanks MCM.. i may let it soak for a few hours, and give it to her..

 

[reeldutch]

Re: need help.. Easy for you guys..

i wouldnt be woried at all.<br />if it breaks the lower unit will stil drop.<br />i would cut off the head of the bold to make shure you dont break it in the treaths.<br />the bolt is only treathed the last 1 1/2".<br /><br />so use heat at the treathed part if that doesnt work at all cut off the head.<br /><br />good luck

 

[MCM]

Re: need help.. Easy for you guys..

An hour is good, but I had to let some things sit for up to three days and several squirts before they'ld finaly break loose, lots of patience Although, you can still get replacement parts so if it breaks its not going to be a total catastrophy.<br /><br />Good Luck

 

[R.Johnson]

Re: need help.. Easy for you guys..

Use a lot of heat where the bolt screws into the gearcase, use two propane torch's if you have to. Slowly work the bolt back, and forth. You can't really get any penetrating oil where it is needed with the gearcase pulled up tight. When working the bolt back, and forth, as soon as the gearcase drop's a little, then use oil.

 

[MCM]

Re: need help.. Easy for you guys..

Good Point

 

[byacey]

Re: need help.. Easy for you guys..

Again this is a good place to make sure of coating the threads well with anti-seize or gasket cement upon re-assembly to prevent more of the same problems in the future.

 

[jay gravely]

Re: need help.. Easy for you guys..

soak it and use a hand impact tool with impact socket. give the tool a good rap with a pien ball hammer.

 

[jay gravely]

Re: need help.. Easy for you guys..

i looked at your pics is that a piece of your cavitation plate missing?

 

[floatingwoody2006]

Re: need help.. Easy for you guys..

Yes.. part of the plate is missing.. The worst part of the motor..Will that make much of a difference?.. That bolt finally came free with heat heat and more heat.. The top of the bolt twisted and i almost snapped it..whew.. Going SLOWLY and re heating, it did come free. I will replace with a new one. The entire shaft was caked in old white something.. impellor looked good but i will still replace Thanks guys..

 

[tashasdaddy]

Re: need help.. Easy for you guys..

old white something might be sign of previous water intrusion

 

[dc in ms]

Re: need help.. Easy for you guys..

I am sort of late in helping you but I had a similar problem recently and thought I'd share how I handled it. If bolt breaks...no big deal. Buy and use a $20.00 Bolt Extraction Kit... they are helpful. Or, simply drill the bolt out without damaging threads... by leaving a thin skin of the existing bolt and run a tap of same size into socket ...it will remove leftover skin of previous bolt. Then you are ready to go.

 

[Paul Moir]

Re: need help.. Easy for you guys..

The white stuff is aluminium oxide created by the galvanic reaction between the stainless steel bolt and the aluminium housing. Brush it off and run a wire brush down through the extension where the bolt runs through to remove it all. I paint the entire shand of the bolt with gasket sealer. Other people use grease or marine grade anti-sieze. Do not the copper coloured stuff. <br />They all seem to help for the next time.<br />I strongly warn you against using the bolt-extractors of the ez-out variety, unless you want to learn about electo-discharge machining. Prevention or the torch-wrench are you're only hope.