Starting the MD6A.... easier said then done!

Oct 30, 2019
114
My entire world now revolves around this damn boat......
I am currently drawing up a proposal to her Majesty's Prison Service to include "Vega Refurbishment" as part of an holistic approach to rehabilitation of offenders. The main thrust of my argument is based upon the multitude of personal and developmental skills required to undertake such a task. Immense patience, determination, positive attitude, flexibility, initiative, problem solving, adaptability, and unfailing motivation to name but a few!
I am convinced that inmates will either benefit greatly from the experience or vow never to offend ever again if they will be forced to fix another Vega!!!!

.......... so what happened today?
I decided to fire up the beast and see if my considerable efforts on the Combi have been worthwhile. I have changed the oil and filter, changed the alternator and dynastart drive belts,(the rear bolt on the dynastart is impossible to get a spanner or socket on - thankyou Mr Volvo) and greased everything within an inch of its life. I connected a supply of water (mindful of destroying the impeller) charged the battery and checked (again) all the nuts and bolts and anything else I could think off. Water was turned on and as I clambered on board I noticed a steady flow of water from the bottom of the engine (stb side) - oh gloom! After a bit of investigation I found a nice neat hole just by the dipstick which was happily emptying the engine of water. Time for more head scratching and a look at the engine diagram.. hmmmm... a water drain tap should be there! I remembered seeing a little brass tap in a box of bits that came with the boat so I set of to hunt it down. It was in a sorry state - someone had butchered it but joy of joys I found a new one as well! Delighted with my good fortune I proceeded to try to fit it... an hour later, suitably frustrated I checked the "new" one against the old one and discovered that it was a slightly larger diameter. No wonder it will not fit! ....by the way it could not be fitted anyway because the little cross bar (which allows you to unscrew it when draining) could not be turned because it fouls the dip stick tube....... I am now resigned to such anomalies and don't even bother sending strongly worded letters to Mr Volvo.

Back to the drawing board - it is in a really tricky spot to reach and I tried to fit the old one to see if it would screw in - it did but it was a bit sloppy. I ended up cutting off the cross bar (tap) to allow a 14mm socket to fit over the top and I managed to get it in and out ok... I ended up covering it with thread tape and copious amounts of thread lock! In it went - time for a coffee and gird my loins ready to try again to start her....

Water was turned on and success - no leaks! Ignition on - three pretty coloured lights glow brightly and I decompress the engine.. hang on - I checked everything again - a few pumps on the lift pump, then listened as the dynastart spun the engine up, decompress off and yippee - she runs! It started very easily and is as smooth as a virgins thigh! Oh happy days!

The prop was happily spinning away and I had made sure the stern bearing was well lubed - all was quiet and smooth with water coming out the exhaust so I pushed the prop/throttle lever on the combi (teleflex is not fitted yet) and revs increased and the prop pitch changed smoothly - no leaks, no nasty noises and no drama - I love my engine!

Even the voltmeter worked and the temp gauge began to show an increase in temp - I was delighted. I checked the battery voltages (both of them) and they both showed 13 and a bit volts so I assume both the alternator and the dynastart are working.. a miracle!

The engine runs VERY well and is SO easy to start - I was delighted. The only thing that did not work is the ammeter - it has no connections on the back for some reason - anyone know which wires I need to connect to get it going? No obvious ones were loose near it..

Anyway - I am well behind schedule so I decided to fit the teleflex throttle control thingy - the old one was corroded solid - I thought it would be a quick job.... when will I learn? To cut a long story short - the mounting holes are NOT equidistant around the central hole so it will only fit one way.. needless to say I had it 90 degrees out! All taken apart and put back together and it now works a treat!

God knows what I will do with my life when I have fixed everything!

Steve (bless him) has posted me a replacement machine screw for the prop boss - so overall things are looking up!

Thanks to all for the helpful comments and advice... toilet fitting tomorrow!
 
Sep 24, 2008
346
John

Sorry for your frustrations.

Is your boat on the hard? If so when providing water for cooling don't use
hose pressure. Remove the water pump intake and place it in a bucket and
let the water pump do its thing. Also if the engine is slow starting do not
place the intake hose in the bucket until it is running. Without exhaust
there is no force causing the water to exit and it can easily back into a
cylinder. With a hose providing pressure the same issues exist.

The ammeter probably doesn't have a shunt which means the output from the
Dynastart would go through the ammeter on the way to the battery. This
makes the ammeter the restrictive point in the charging circuit and limits
current flow. Really an ammeter isn't needed as a voltmeter will tell you
if it is charging or not.

For reasonably effective charging you want the voltage to be in the high 13
range at least - probably around 13.8 volts. Even that makes for a pretty
slow charge and alternators for many years have a 14.4 volt output.
 
Oct 30, 2011
221
Thanks Brian, Yes, boat is in my shed. I shall use your technique
next time! The hose was only on very slow - just enough to wet the
impeller so hopefully I will not have damaged anything! I will leave
the ammeter well alone and the voltage was 14V and a bit on one
battery and just under 14V on the other. (sorry - I just checked and
I did type 13V on the original post)
I am getting used to the frustrations - I am thinking of it as "doing
my apprenticeship" - its all good character building stuff! :)
 
Oct 30, 2011
221
Laughing! I have you on speed dial!

.... promise not to ring... how hard can it be? ........if all else
fails I have a portaloo!
 
Oct 19, 2019
921
Albin Vega 27 Limerick
Hi John.
Before there were Portaloos there were buckets!

John V1447 Breakaway

John Kinsella
Mathematics and Statistics Dept
University of Limerick

Phone 0035361202148
Web jkcray.maths.ul.ie
 
Oct 30, 2019
1,459
Why, buy another boat, John ... what else?
Seriously though, I'm glad you're making headway!

Peter
#1331 'Sin Tacha'
 
Oct 30, 2011
221
Thanks Peter, I feel like I have "broken the back" of the jobs
now..... I still have loads to do but I am looking forward to
cleaning her up and doing all the "nice" jobs (cushions and curtains!).

Just getting ready to go and tackle the toilet now... I have stripped
it down and bought new valves and seals - no doubt it will be another
Chinese puzzle! I assume the outlet pipe goes up to an air inlet
valve (above the water line) before it goes back to the sea cock outlet?

Cabin Boy John
 
Oct 30, 2019
1,459
There seem to be more head plumbing configurations than stars in the sky. I use a K.I.S.S. system
with a modest holding tank (above the water line) and very few hoses. It required removing the sink and cupboard to make space for the tank. There's no anti-siphon on the head outlet, as the vented tank does that job, but there is one on the water line between the toilet pump and the bowl.

My head is a "cheap" Jabsco. The difference in price between a complete seal kit and a new head is minimal, so in my case it was easier to put in a new one. Recently I put in a 5 gallon fresh water portable tank in the hanging locker, forward of the head, and now use it for flushing. (The sea water line is still connected in case the tank runs dry.) I find the head is a lot happier being flushed with fresh, and there's no smell after leaving the boat sitting for a while. When the pump gets a bit stiff a dollop of olive oil flushed through lubes it up nicely.

I think the Port-Pots have a lot going for them. I'm going to put one in the Ballad to reduce the number of "to do's" before launch, and see how it works out. Thetford has a new model that is well disguised!

Peter
#1331 'Sin Tacha'