Inherited 25D w/ bad starter

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DB25DSwe
Posts: 3
Joined: Mon Mar 23, 2020 4:21 am
Location: Sweden

Inherited 25D w/ bad starter

Post by DB25DSwe » Tue Mar 24, 2020 6:46 am

Hello! My name is Roger, I'm new to the forum and also I live in Sweden. :)

We inherited a DB 25D from my great uncle, it's in good condition. As far as we know he only ever used it to launch and recover his home made house boat. It has never seen farm work.

But, the starter is weak. The solenoid activates and plunges the cog out but with just your hand you can push it back in running. This is with a fully charged healthy battery. We installed it in the tractor and "forced" the cog in place and ran the starter but it almost melted the jumper cables we had from a other tractor. And this tractor starts easily being puayor just rolling down a hill. This is how I suspect my uncle started it the last decades.
Now being in Sweden and Volvo country a David Brown of this vintage is hard to find pieces for as well as knowledge. I'm trying to figure out if there's parts to rebuild the starter or which if possible replacement part there is.

I'm attaching some photos of the starter and hoping some of you could help me. It's otherwise a truly fantastic tractor and I must say have some really advanced features for its age. I own a Volvo T425 from 1958 and it appears ridiculously simple in comparison.

Thank you!

Roger

(I tried to attach photos but to no success - attaching links instead)

https://forumbilder.com/i/r50h
https://forumbilder.com/i/r50Q
https://forumbilder.com/i/r50N
https://forumbilder.com/i/r50t
https://forumbilder.com/i/r50Z
https://forumbilder.com/i/r50K
https://forumbilder.com/i/r50u
https://forumbilder.com/i/r50O

User avatar
GeoffDEAL
Posts: 497
Joined: Tue Jan 27, 2009 8:25 am
Location: New Zealand

Re: Inherited 25D w/ bad starter

Post by GeoffDEAL » Tue Mar 24, 2020 8:08 am

Hi in the second picture the commuter --the round part the carbon brushes contact looks worn and needs a clean up and most likely a new set of brushes, there several tests on windings ect while it is apart. If you are not familar doing this find an auto electrician who can refresh the starter.

User avatar
db2d
Posts: 2196
Joined: Fri Feb 24, 2012 10:01 pm
Location: Monmouthshire

Re: Inherited 25D w/ bad starter

Post by db2d » Tue Mar 24, 2020 8:41 am

The starter motor you have is normally trouble free and only requires an occasional strip down and clean.
Do you have a manual that explains this procedure?

DB25DSwe
Posts: 3
Joined: Mon Mar 23, 2020 4:21 am
Location: Sweden

Re: Inherited 25D w/ bad starter

Post by DB25DSwe » Tue Mar 24, 2020 9:57 am

Thank you for your info. I will see if I can clean it up a little and see if it helps. We do have a tractor mechanic nearby. Will see what he says about it.

I have nothing in way of strip down or overhaul manuals. I just now learnt it's called 25D in England since they in Sweden rebadged all of them them to reflect horsepower. Hence here it's called 31D. Also every label is changed to Swedish in brass stamp labels. Very thoroughly I must say.

User avatar
db2d
Posts: 2196
Joined: Fri Feb 24, 2012 10:01 pm
Location: Monmouthshire

Re: Inherited 25D w/ bad starter

Post by db2d » Tue Mar 24, 2020 10:09 am

The motor has to be taken apart to be cleaned properly.

Unfortunately due to the restrictions imposed in this country I am unable to travel and I do not have access to my computer.

I have sent you a PM.

User avatar
cobbadog
Posts: 772
Joined: Tue Oct 11, 2011 6:18 am
Location: beautiful Coopernook NSW. near Taree. NSW. Australia

Re: Inherited 25D w/ bad starter

Post by cobbadog » Tue Mar 24, 2020 10:31 am

I have one of these starters sitting on the bench ready to be fitted. I cleaned it up and especially the communtator and cleaned the gaps between them. Now when you connect the power it kicks like a mule and is very strong. Certainly well worth repairing.

DB25DSwe
Posts: 3
Joined: Mon Mar 23, 2020 4:21 am
Location: Sweden

Re: Inherited 25D w/ bad starter

Post by DB25DSwe » Tue Mar 24, 2020 10:59 am

I talked to the local mechanic and he recommended me to an auto electrician for an overhaul. But first I should clean it properly and see if it helps. He didn't think I should get a new replacement since it'd lower the value of the tractor and really he said - those starters should last forever.

Really intrigued by this tractor! Seems we made the right choice choosing the tractor instead of the uncle's boat.

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scottie
Posts: 14
Joined: Tue Jul 15, 2014 12:07 am
Location: canada

Re: Inherited 25D w/ bad starter

Post by scottie » Tue Mar 24, 2020 4:31 pm

yes, when you consider that a boat is just a hole in the water into which one just pours lots of money!

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