water leakage

[agent4change]

I have a 1986 Mercruiser 140 hp. serial #0A681921, or B403724 MCM 140 Transom Assembly.<br />there is a huge leak from behind the flywheel and the wheel is wobbly when I take off the belt. I think the shaft is loose? how can I fix this and what is a good repair manual to use to do this job?<br />thanks

 

[Haut Medoc]

Re: water leakage

Welcome to iboats Are you sure what you are calling the fly wheel is really the flywheel?<br />I don't know have acess to serial # identification, but there are those here that do.....<br />Don't waste your money on a Seloc or Clymer's, get a genuine Mercruiser Manual.....<br />There might even be some free online links, so stick around.....JK

 

[agent4change]

Re: water leakage

Maybe it's not a flywheel, but it is the top pulley that I beleive goes to the crank shaft. <br />where can you get the good mercruiser manual and where are some links? <br />thanks for the help.

 

[Haut Medoc]

Re: water leakage

Don S. will have an answer about the exact manual for your needs....<br />I think you are talking about the water pump pulley.....<br />Bondo knows alot about these engines, he will have some good input....<br />While you are waiting around, you might try using the red 'search ' button at the top of the page.....<br />This subject has been discussed in length before & you might turn up some helpful links there .....JK

 

[Bt Doctur]

Re: water leakage

sounds like a bad water pump.all you need is a replacement pump.

 

[Bondo]

Re: water leakage

I rather doubt you're talking about the Flywheel,..... It's Totally Hidden by housings,+ is securely bolted to the Back of the Engine.........<br /><br />By your discreption,.....<br /><br />You need to replace the WaterPump........<br />It's mounted Above the Crankshaft on the Front of the motor.........<br /><br /> This is a Mercruiser Manual that is as Close as I can get to Your Motor........... <br />There Maybe suttle differences,do to dates of manufacture... But this IS your engine......

 

[agent4change]

Re: water leakage

With this manual how do I know which specs to use.<br />Is there a cheap way to get a replacement pump? What would the part # be?<br /><br />The wobble in the water pump pully, is that bad and should that be fixed/ how to fix?<br />thanks for the help!

 

[agent4change]

Re: water leakage

sorry, one more thing, what is the Alpha Bravo thing. How do I know what Type I have?

 

[Haut Medoc]

Re: water leakage

Just replace the pump......It ain't hard, if'n ya got the tools a & a little bit of know how...<br />Ya got the specs right on the first page, some times those files take a bit to load.....<br />You have an Alpha 1 Gen 1....<br />Bravo's are for larger H.P.....<br />If you have your serial # you should be able to look up your part on the Mercruiser site or at Bammarine ......JK

 

[Bondo]

Re: water leakage

The wobble in the water pump pully, is that bad and should that be fixed/ how to fix?<br />

Changing the Waterpump,.... Should Fix that......<br />If it's the Actual Pulley that's Bent,...... It'll need to be either Straigthened,.. or Replaced.......