Small boat engine servicing - How to change the raw water impellor

In this boat engine maintenance video we change the sea water pump impellor and clean the raw water intake strainer in a Volvo Penta D1-30B
00:00 Raw water cooling - theory
01:13 Cleaning the water strainer
02:13 Removing the old impellor
03:00 Fitting the new impellor
05:10 Finishing off
05:55 Exhaust alarm NASA EX-1
Butties and breakdown video - what to do when the Exhaust Alarm goes off because your water pump has failed...
• Butties and Breakdowns...
MUSIC USED
Local Elevator by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/...
Source: incompetech.com/music/royalty-...
Artist: incompetech.com/

[@hellodarren]

Great advice, thanks very much!

[@confidencesailing]

You are most welcome - glad to help

[@brennigjones]

Thanks for this. My Yanmar 3GM30 seems to be periodically getting air blockages. The overheat alarm went off last Thursday after a long sail, no water being pumped out of the exhaust. I undid the cooling pump inlet which flowed water, then the outlet which flowed water. Restarted and everything worked fine. Very peculiar!

[@confidencesailing]

Ooh. That sounds very similar to a problem we had last summer..! during our sail the water drained out of the cooling system, which is not unusual in rough weather or if you have a long sail, but on start up, our pump didn't have enough suction to self prime. It might be worth watching our video on the incident.
Have a watch and let me know in the comments if it helped.
czcams.com/video/X4tAsHm8Zcg/video.html

[@mansourbenyamina2157]

Merci J'espère que vous ferez une vidéo sur l'huile moteur pour les débutants

[@RaulMartinez-ln8zq]

Great video!

[@confidencesailing]

Thank you so much. And thanks for watching

[@jport3707]

Great video

[@confidencesailing]

Thanks for watching 👍

[@myozone]

Just an idea of a non sailor, how about sanding out the groves (wet & dry) the cover plate on a flat surface and shim out the rear of the impeller ?

[@confidencesailing]

That might work. Thanks for the comment

[@charlesbrewer6552]

The volvo manual says to lubricate the impeller with glycerine only.
I guess that is what the volvo lubricant is?
I have stopped using vaseline on O-rings, these days I use silicon grease or the oil or fuel it will be sealing.
By the way thanks for a very helpful series of videos on the volvo D series engines.
Are you going to do one on cleaning the heat exchanger?
That is MY next challenge.

[@confidencesailing]

You are correct. The lubricant that's included with the impeller kit is glycerine. The main reason I still use vaseline is because the glycerine is runny. The vaseline stays where you put it, which is useful when fitting a new impeller.
I would definitely concede that the manufacturer's recommendations are always the one you should go for... Even if that's just to make sure there's no wriggle room with insurance company payouts.

[@confidencesailing]

And thanks for watching 😁