internal cleaning of outdrive

[icyveins]

232amftc 1987 2.3l cobra

I drained my lower unit of oil and plan on doing a pressure test tomorrow,(very nasty oil/water came out)
I am wondering if there is a way to (douche) clean out the drive. maybe flush new oil through the drive?
thanks for all the help

 

[jerryjerry05]

Re: internal cleaning of outdrive

The 87 used plastic washers on the drain/fill plugs.They seem to leak after the first use.
So replace with new when you change.
The 91+ used a softer rubber on the dip stick washer.Try to get that kind.
I use Mercruiser seals on the drain/fill plugs.
To flush just fill it with oil(from the side) and start the motor.Then drain after a few minutes.
Make sure you turn the prop while doing the pressure test.

 

[bruceb58]

Re: internal cleaning of outdrive

The 91+ used a softer rubber on the dip stick washer.Try to get that kind.

91 has a completely different dipstick so you need to stick with the original style washer.

 

[icyveins]

Re: internal cleaning of outdrive

Thanks guys, I put the pressure on her this morning and waited a few hours then put it in gear and rotated the input shaft a few turns.
I will hopefully return to my shop tomorrow morning to find that she held pressure all night. Thanks for the help guys I really appreciate it.
I guess if it holds pressure then my water problem must have been the drain plugs........? or just failure to maintain from the previous owner

 

[GA_Boater]

Re: internal cleaning of outdrive

Don't expect it to be holding pressure that long. 15-20 minutes is plenty.

 

[icyveins]

Re: internal cleaning of outdrive

Don't expect it to be holding pressure that long. 15-20 minutes is plenty.

I guess from everything I have read on the sticky info and youtube how to videos it says longer than 20 mins. (one guy checked his over night) I would assume if it is sealed tight it shouldn't leak at all there fore holding pressure as long as there is pressure there

 

[GA_Boater]

Re: internal cleaning of outdrive

Basically, it either holds pressure or it doesn't. A shop isn't going to do more than 15-20 minutes.

 

[jerryjerry05]

Re: internal cleaning of outdrive

Sorry about the wrong info.The part is 0912830 this is the soft rubber seal.

 

[icyveins]

Re: internal cleaning of outdrive

Don't expect it to be holding pressure that long. 15-20 minutes is plenty.

it held pressure for about 17 hours, I stopped the pressure test at that point

 

[GA_Boater]

Re: internal cleaning of outdrive

You're good. The next time you drain the oil, pour it into a clear container. If it has water, the oil/water separation will be obvious.