Volvo Penta sx-m outdrive squealing

[Ga Farmer]

Hi Guys and Gals,

Ok finally got my Regal 240 Destiny out this weekend. I have had the engine out for since early last summer to to have the transom replaced. After I replaced the outdrive, and cranked it up, I noticed a squealing sound. ( the drive was in forward) I thought that it might be the prop rubbing against the housing. Not the case. (But that is pretty close to what it sounds like) I pulled the dipstick and the oil was milky so I found the shift seal was bad and replaced it. It only does it in forward. Quiet as a mouse in reverse, nor does it do it in neutral. It is constant and in about 45 min of running didn't seem to get any better or worse. It also will increase and the throtle and rpm increase. I am sure that a bearing has suffered from the water in the oil and the long time that it was sitting on it's side while I was doing the transom. Yes it was lying in it side the whole time. So I have the outdrive off now. What should I do, where should I look, What pitfalls do I need to avoid and how should I avoid them.

Thank you in advance for your help

Wendell

 

[Ga Farmer]

Re: Volvo Penta sx-m outdrive squealing

Hi Guys and Gals,

Ok finally got my Regal 240 Destiny out this weekend. I have had the engine out for since early last summer to to have the transom replaced. After I replaced the outdrive, and cranked it up, I noticed a squealing sound. ( the drive was in forward) I thought that it might be the prop rubbing against the housing. Not the case. (But that is pretty close to what it sounds like) I pulled the dipstick and the oil was milky so I found the shift seal was bad and replaced it. It only does it in forward. Quiet as a mouse in reverse, nor does it do it in neutral. It is constant and in about 45 min of running didn't seem to get any better or worse. It also will increase and the throtle and rpm increase. I am sure that a bearing has suffered from the water in the oil and the long time that it was sitting on it's side while I was doing the transom. Yes it was lying in it side the whole time. So I have the outdrive off now. What should I do, where should I look, What pitfalls do I need to avoid and how should I avoid them.

Thank you in advance for your help

Wendell

Does anyone have an idea on this? I didn't want to year into this thing blind. I'm open to all ideas
Thanks

 

[Don S]

Re: Volvo Penta sx-m outdrive squealing

The first thing you need to do is determine where the noise is coming from. Take the prop off, start the engine, run it in forward and with a mechanics stethoscope, listen around to find where the sound is loudest.
You do have the OEM service manual for the drive don't you? If not, head up to the adults only sticky and download it.

 

[Ga Farmer]

Re: Volvo Penta sx-m outdrive squealing

Thank you Don for getting in on this!

I have the outdrive off of the boat now. I really dont have a way to spin it now, to listen to it. I don't know where the squeeling is coming from other than what i have already told you,

What should I do?

 

[Don S]

Re: Volvo Penta sx-m outdrive squealing

Put it back on. You don't have to hook up the cable or the trim rams, then shift it turning the shift mechanism by hand (take the prop off first).

 

[Ga Farmer]

Re: Volvo Penta sx-m outdrive squealing

It appears to be coming from the lower part of the unit. I couldn't find the transom service manual in the stickey what is its title?

Thank youj so much for the help

 

[Ga Farmer]

Re: Volvo Penta sx-m outdrive squealing

Don, I know that you are a busy guy. But did you see that last post?

 

[Don S]

Re: Volvo Penta sx-m outdrive squealing

Here is the manual http://www.4shared.com/file/50982625/e2bdb42c/SX_DP-S_Service_Manual.html

I have no idea what could be in the lower unit that could cause that kind of a noise, the upper yes, lower no.

 

[Ga Farmer]

Re: Volvo Penta sx-m outdrive squealing

Thank you Don. It was hard to determine exactally where it was coming from... what would it be in the upper housing? Maybe it is there and I am wrong.... I used 80-140 oil could it possiably be that? (I couldn't find 75-90)

 

[Don S]

Re: Volvo Penta sx-m outdrive squealing

It could be the cone clutch running dry from gear lube that is too thick. Get the right gear lube, fill it up to the proper level on the dipstick and see what happens.