Dynastart Starter Motor Replacement

scurvy · #1 (**permalink**) 10-12-2007

I have a Volvo-Penta MD6A (c. 1973), 10hp, 2 cyl inboard diesel. Recently have had a hard time with the dynastart starter motor and was looking into replacing the unit altogether. I have had a difficult time finding suitable replacement motors, but I found this online and was wondering if any of you (more knowledgable marine engine folks out there) have any suggestions about the following unit. Looks like it is a pretty good fit, at a reasonable price.

http://www.dbelectrical.com/generators/lawngen.shtml

Thanks
Chris

Gummy · #2 (**permalink**) 10-12-2007

I have one that was giving me trouble. It would not turn unless I spun it by hand with no load on it. I could not find another one and decided to take the plunge and open mine up. It is really not too complex inside. The armature was filthy. I tore it apart, soaked the whole thing in solvent and scrub brushed off all the parts. Finally, I repacked the bearings with grease, cleaned off the brushes and put it back together. It works great now.
Rod

scurvy · #3 (**permalink**) 10-12-2007

OK....that is what I will do. Thanks Gummy! No Fear..right? No fear....

I thought that AC Delco must have a replacement starter motor that would do the trick, but if all I need is a good cleaning and repacking, then that will be the first step...

Thanks!

Chris

Gummy · #4 (**permalink**) 10-12-2007

Good luck with that, I'll bet you get the motor working. Why not try before you buy anything?

Pretty funny. I just looked through some of you older posts. your experiences seem to mirror mine lately. I had probs with the dynastart, I had trouble finding an oil filter(I bought an adapter), I couldn't get that same fuel pump cap off easily, I couldn't find out what was wrong with my temp sender either. I took it off and found the whole inside of my manifold to include the sender was corroded. I eventually poked a hole in my exhaust manifold.(JB weld to the rescue for now) I have recently had my injectors rebuilt and last week I broke the nipple off in one of the injectors and broke my leak-off line. I bought the boat to learn about boats. It is working.
Rod

scurvy · #5 (**permalink**) 10-12-2007

Same here Rod!

I can't say that I regret all that has gone on with this engine, as I too have learned a great deal about the engine through these posts, manuals, mechanics, friends, my therapist....

All in all, it has been a great education and will only lead me closer to becoming the self-sufficient sailor that I hope to become one day. When the sh*#t hits the fan, I want to be able to fix things myself...bottom line. Some great experience on this list and it has been a godsend for sure.

It has been difficult finding any information on the dynastart motor. Very little remains published on this relic. Would love to have a diagram or exploded view of the unit so when I take it apart, I will put it back together as it was...without all the bonus parts that I seem to have left over.

Will keep you posted on my progress!
Thanks Gummy
Chris

Gummy · #6 (**permalink**) 10-12-2007

Send me an e-mail to rodspake (at sign) usa.net and I'll send you a diagram from the parts manual. It must be online somewhere too, but I can scan that page.

scurvy · #7 (**permalink**) 10-12-2007

Quote:

Originally Posted by Gummy

Send me an e-mail to rodspake (at sign) usa.net and I'll send you a diagram from the parts manual. It must be online somewhere too, but I can scan that page.

Will do! Thanks Rod.
Chris

Gummy · #8 (**permalink**) 10-12-2007

Sent. Let me know if you don't get it.

Gummy · #9 (**permalink**) 11-20-2007

Chris,
Mine's not working again now. Going to replace brushes. If that doesn't work, here is a link for a new one.
http://www.woodauto.com/component.aspx?ref=DST10001
Rod

dpayne · #10 (**permalink**) 12-12-2007

I replaced mine with one of these, it works well and the price was good too.