Mercruiser Alpha One Gen II Grease Fitting Location.

[ARTIZAN]

Hi,

I got my Mercruiser 4.3 started and it ran for a short time then died. During the short periods of time it didn't make any funny noises at first but then started making a "railing" sound like a bearing was dry. I found the gimble bearing grease fitting and tried adding grease and starting the engine, then more grease, then more. The noise hasn't goes away. I looked behind the engine for the coupler grease fitting but I couldn't find it.

Here is a picture of the area forward of the stern behind the engine. Sorry it's so dirty in there.

 

[Don S]

Re: Mercruizer Alphe One Gen II Grease Fitting Location.

Re: Mercruizer Alphe One Gen II Grease Fitting Location.

Pull the drive, you will probably find water in the bellows. Rough/rusty gimbal bearing and rough/rusty ujoints will make lots of noise. You can't expect grease to fix them. The shaft in the coupler won't make noise, no matter what is wrong.

 

[tpenfield]

Re: Mercruizer Alphe One Gen II Grease Fitting Location.

Re: Mercruizer Alphe One Gen II Grease Fitting Location.

The coupler grease fittings are nearly impossible to access, even when you can see them. I usually grease the coupler manually when I install the outdrive.

Like Don indicated, could be u-joints and such, so maybe you need to pull the outdrive for a better look. You have the u-joints and the gimbal bearing that can be inspected. If you use a tube held up to your ear, or a mechanic's stethoscope, you could better isolate the noise source.

 

[ARTIZAN]

Re: Mercruiser Alpha One Gen II Grease Fitting Location.

OK, thanks. I will do that. Where can I get the gimble bearing for a good price? I found the bellows kit for $80 and the impeller & houseing for about $40 on Ebay. Are those good?

 

[90stingray]

Re: Mercruiser Alpha One Gen II Grease Fitting Location.

DO NOT use the cheap-o bellows kits... if you make it thru one season with those you would be lucky. They are junk! OEM only. OEM should last you a good 5 years. Impeller and housing price seems about right. Gimbal bearing should be about $30-50. Look in the sticky at the top for help with pulling your old bearing out. There are automotive p/n's for your u-joints too. Goodluck!

ujoints- http://forums.iboats.com/showthread.php?t=238091
puller- http://forums.iboats.com/showthread.php?t=438801

 

[ARTIZAN]

Re: Mercruiser Alpha One Gen II Grease Fitting Location.

Thanks.