Engine lift out

[mdonnelly]

It has become necessary to lift out my volvo penta MD7B for major over haul. Thankfully I have a relative who is a retired diesel engineer and who is doing the work as a favour. It is coupled to a saildrive( 120S?). Anything specific I need to know or is it just a case of undoing everything? Thanks for advice.

 

[stevebirch2002]

Find out teh cost of spares first, you may be a wee bit surprised......

 

[oldestgit]

Hi Mark:

No real problems except as stevebirch2002 says the cost of spares.

I did it about 4 years ago, just drain off all fluids then split engine from the saildrive and take the engine out first… Heavy needs 2 good chaps or a lift, or to make it lighter take the head and all bolt on bits off first.

When out check the spline on the sail drive I had to have mine converted as most do.

If you require any second hand bits, let me know as I have one sitting in the garage that I intended to break and sell as spares last year but never got around to it.

Finally the rebuild…... If you haven’t already got one, get hold of the Volvo manual, saves lots of time.

Enjoy……….. Peter

 

[oldsaltoz]

<<<When out check the spline on the sail drive I had to have mine converted as most do>>>

Can you tell me what was converted to what and why?

 

[Norman_E]

I am not sure if this applies to your engine & gearbox/saildrive. There is a well known problem with some small Volvo engines, where the splines connecting the crankshaft to the gearbox wear out, eventually leaving you with no drive. Volvo themselves have the cheek to sell an expensive cure, and there is an independent solution which is to machine the shaft part to a hexagon shape and fit a drive plate with a hexagonal hole in it to match. It will certainly be worth your while examining the connection between engine and gearbox for wear.

 

[Skyva_2]

I have not heard of the 2000 series gearbox spline problem applying to the MD7, but always best to check.

Full details of the problem and cure are here:

http://www.yachtmarisco.com/Document%20submitted%20to%20WOA%20website.htm

 

[colvic987]

gaskets cost a fortune from vp, the gearbox spline problem does not apply to the md7, but the cone and cog in the gearbox is prone to wear and will cost loads of money, i had mine done 5 years ago, due to the gearbox not selecting the gears smoothly or slipping, the two parts which were replaced at a price on £900, then the labour and vat was another £500, so not a cheap option, it has all been running very smoothly for the last 5 years and i hope for a long time to come, but if anything major goes, it will have to become someone's mooring..

i can post pics of cone and cog if required

 

[mdonnelly]

Thanks Oldestgit, will keep you in mind. The chap doing the work is a firm believer of not using marine spares as he can usually source them from non marine sources.