VOLVO.... again

[ColinS]

Decided to rebuild my not-so trusty MD7A and wanted a workshop manual. Local dealer showed me their only copy, with a price tag of £10.50, and then offered to photcopy it for the princely sum of £25.00!! I only wanted some torque settings and the tightening order for the cylinder head nuts. Does anyone out there have this info?
They also quoted me £280.00 for a new piston, including rings!! My wallet stayed firmly shut.

 

[stevebirch2002]

the MD6A/7A is a very good diesel but the spares now are out of this world in price. As the technical officer of the Albin vega club I have tried many different avenues to obtain spares, even contacting Mahler in Switzerland who make the pistons. A complete set of bits to renovate the engine is over £1700! and coupled with labour etc isjust stupid. Volvo wonder why they are losing so much custom! As an Owners Association we contacted all the replacement engine bods and finally settled on the Beta BZ482 (13.5HP). A wonderful engine, easy to install, lighter than the MD7A, freshwater cooled, spares available worldwide. We have now changed fifty-four (54) of the engines in the last 2 years so proves their worth. If you need anymore details then please contact me at:
steve@albinvega.com or try our website www.albinvega.com then click on the Union Jack flag. Kind Regards Steve Birch

Albin Vega "Southern Comfort" V1703

 

[Guest]

I rebuilt the top end of my MD7a 2 years ago. Very easy and worthwhile, well so far so good. I have the information you ask for at home but i am only there at weekends. I can get the info this weekend if that is early enough.
BTW one mistake I made was to completely de coke the combustion chambers resulting in insufficient compression and hence no ignition. I was given a tip to get it going, it worked but I won't bore you with the details, and the chambers resealed themselves after about 5 hours running.

 

[chippie]

Terence, as a person interested in most things technical,please bore me with the details. It might come in handy one day.

Cheers

 

[stevebirch2002]

If you need a Workshop Manual then we do them for our club members. I will post you one if you make a small donation to the RNLI. Leave your name, address etc.

Regards Steve Birch (Vega Association of Great Britain)

Albin Vega "Southern Comfort" V1703

 

[Guest]

Here goes:
Add engine oil into the combustion chambers to temporarily increase the compression, sqirt a small amount of ether spray, it becomes addictive, into the induction manifold and give the engine a whizz. Mine started instantaneously, lots of smoke created, and I just left it running a few hours. The subsequent 2 starts had small assistance from ether, after that it worked fine.
The difficulty is that the md7a does not have glow plugs which would be easy to remove to enable the oil intrduction. So I had to remove the injectors, add the oil, replace the injectors, and then bleed the system. After that I was really pleased it started first time.

 

[ColinS]

Thanks for all the information. Did you use a special tool to remove the injectors?
PS. I don't need the manual data now thanks, had a good offer from Steve.

 

[Guest]

Re: yes - spanner nm

.

 

[chippie]

Re: Thanks Terence

NM

 

[bedouin]

Re: That reminds me..

Of the engine in my first boat - a wonderful single cylinder Coventry Victor. That had a special chamber which you used to inject engine oil into the cylinders prior to starting. We also had to use ether occasionally too!

 

[johnsomerhausen]

Tightening torques
Cylinder head nuts 51 lbf ft
Cylinder head stud bolts 14 lbf ft

Nuts tightening order
__
| |
| | 8 2 7
| | 6 1 5
| | 4 3
| |
|___|

The reectangle represent the flywheel as seen from above.

Refeerence. MD7A supplement to workshop manual voerving the MF7A The manual I have covers the MD6A

john