Starter generator for Volvo md6a

[Douglas Pollard]

Just got my starter back for my md6a engine from a starter
re-builder. The guy said it was in excellent condition. He replaced
the brushes turned the armature and replaced the bearings all for
$43.00 He used Hitachi brushes. He also told me that the Yamaha
Motorcyle uses exactly the same starter except that it is made by
Hitachi. I don't know which model.
Most of the volvo parts likely can be cross referenced to Japanese
motors. For example a lot of the parts in Izzu engines are general
motors and vica versa. I know that many of the injector pumps and
injectors are built on the Bosch patents and are exactly the same.
Cub cadet garden tractors and most of the others with 16 -20 horse
motors use the same starter solenoid type that should work on the Md6a
engine.
A diesel mechanic I know put a different cylinder head on an MD7
and decreased the combustion ratio to 9 to 1 and it is running on
propane in an indoor environment. So what I am saying is with a little
ingenuity a lot of things can be done with these old engines.
I have found a place that will boil the salt out of my engine so
next winter I will take mine apart and have her boiled out and then will
put her back together. They are such a simple engine it is really easy
to do. There is also a guy in california that will make a complete
gasket set for the engine. The last time I talked to him he was getting
about $150 for a complete set of gasets for a 45 horse 3 cylinder izzuzu
diesel. Pretty cheap considering the price of a new engine. I would not
think the md6 would cost any more.
I would not give up on those old engines too easily they will need
replacing soon enough.

Doug

 

[trevy_kins]

Doug - great to hear about the gasket guy - because the one problem I
had when we rebuilt my MD6B was that that the new gaskets were so old
they had shrunk. Trevor (V2915)

________________________________

From: AlbinVega@yahoogroups.com [mailto:AlbinVega@yahoogroups.com] On
Behalf Of Douglas Pollard
Sent: December 3, 2010 5:42 PM
To: AlbinVega@yahoogroups.com
Subject: [AlbinVega] Starter generator for Volvo md6a





Just got my starter back for my md6a engine from a starter
re-builder. The guy said it was in excellent condition. He replaced
the brushes turned the armature and replaced the bearings all for
$43.00 He used Hitachi brushes. He also told me that the Yamaha
Motorcyle uses exactly the same starter except that it is made by
Hitachi. I don't know which model.
Most of the volvo parts likely can be cross referenced to Japanese
motors. For example a lot of the parts in Izzu engines are general
motors and vica versa. I know that many of the injector pumps and
injectors are built on the Bosch patents and are exactly the same.
Cub cadet garden tractors and most of the others with 16 -20 horse
motors use the same starter solenoid type that should work on the Md6a
engine.
A diesel mechanic I know put a different cylinder head on an MD7
and decreased the combustion ratio to 9 to 1 and it is running on
propane in an indoor environment. So what I am saying is with a little
ingenuity a lot of things can be done with these old engines.
I have found a place that will boil the salt out of my engine so
next winter I will take mine apart and have her boiled out and then will

put her back together. They are such a simple engine it is really easy
to do. There is also a guy in california that will make a complete
gasket set for the engine. The last time I talked to him he was getting
about $150 for a complete set of gasets for a 45 horse 3 cylinder izzuzu

diesel. Pretty cheap considering the price of a new engine. I would not
think the md6 would cost any more.
I would not give up on those old engines too easily they will need
replacing soon enough.

Doug

 

[stevebirch2002]

Hi Doug

Would be careful about the starter cross-reference as teh MD6A used a Dynastart that drives the flywheel via belts. The MD6B and MD7A on the other hand use a proper Starter Motor with an engaging solenoid that drives the flywheel via a gear (The flywheel in the MD6B and MD7A is toothed).

Cheers

Steve B

 

[bobnlesafloat]

"the Yamaha Motorcyle uses exactly the same starter"

Not on any I\'ve seen and I\'ve seen a few.

That said, rebuilding dynastarts seems fairly straightforward, provided the armatyre itself is OK. We had Spring Fever\'s rebuilt in a Turkish backwater last summer and when it was first opened, things looked grim; however, it took the guys little over an hour to source/renew all the bearings and brushes, braize up the cracked brush holder and clean out 35+ years of accumulated cruds from the inside and all for £12! Thye must\'ve been well built units originally, as when they pulled it apart my biggest wonder was how it\'d kept working as long as it had; the brushes were almost non existant and both the brush-holder plate and bearing just fell in bits as it was coming apart!

Turkey\'s a good place for gaskets too, a couple of weeks ago we had new gaskets made for both the exhaust elbow and the cooling manifold (the one Volvo charge a small fortune for!) gaskets; they made both using what remained of the originals as pattterns for £4!

 

[dougpol1]

Well Bob I don't know, you may be right. The guy who worked on my
starter is about 65 and claims to have been riding motorcyles since he
was a kid. He is covered in tatoos and has shoulders so wide he turns
sideways going through a door. I sure won't tell him he don't know what
he is talking about. He did show me the reciept where he bought the
brushes and bearings for a local motorcycle dealer. Even if that's bum
information many tractors use a very simular starter and some of them
are belt drive. They are turning over much bigger engines though they
may not be diesel, so I am not surprise they hold up well. The
brushes do fit.
Doug

 

[bobnlesafloat]

"He did show me the reciept where he bought the brushes and bearings for a local motorcycle dealer"

That makes more sense.The bearings/brushes could very well be interchangeable with one or more of of the Yamaha motorcycle models; I got mine supplied/fitted by a small car garage/workshop in Turkey and they'd clearly never seen a dynastart before, they just measured/sized the originals and matched with what they had in stock.

 

[dougpol1]

One of the things I leaned running a machine shop is that designs are
never thrown away. Even after the patent runs out they are still
valuable because it costs a bundle to go through the devlopment of a new
product. These companies just buy a design in a lot of cases. He says
that starter is now Hitachi whether it is Yamaha or not I don't know.
They likely bought it from Bosch. Yanmar uses a copy of Bosch pumps and
injectors and who knows what else. Of course a starter is a starter and
a generator is a generator except nowdays they may well be goverend by
softwareand they may look different on the out side. That may well be
what he was trying to tell me. They are the same thing on the inside. If
the are the same as Yahamah I would guess it would be an old one. They
probably use alternators now days.

Doug