Bukh DV10 Starter motor belt

[bumblefish]

Hi, the starter belt on my DV10 has too much play and slips on the flywheel. I assume that adjusting the tension is the same as any old engine, loosen off the motor and the adjustment bolt and then move to get the correct tension? Any advice or tips?

 

[Boater Sam]

Never knew that any Bukh had a belt starter.

 

[DownWest]

Bit of reading here:
https://bukh.dk/upload_dir/docs/FAQ/Bukh ME - Data/Bukh ME - 10-20 ME/Bukh 20 ME - Manuals/Works shop manual/Work Shop Manual - BUKH DV 20 ME.pdf
Section P covers the electrics.
It sounds like you have a Dynastart? If it is the starter that is on a belt. Otherwise it is the alternator..

Bit surprised that a diesel would have a dynastart, But..

 

[VicS]

Hi, the starter belt on my DV10 has too much play and slips on the flywheel. I assume that adjusting the tension is the same as any old engine, loosen off the motor and the adjustment bolt and then move to get the correct tension? Any advice or tips?

There are various links to this
Dynastart was fitted to early engines.

Adjust in the usual way to give 3 to 5 mm deflection of the belt by firm thumb pressure ......... See Adjustment Of V-Belt - Bukh DV10 Workshop Manual [Page 58]

.

 

[bumblefish]

Never knew that any Bukh had a belt starter.

Mine is the original 1972 engine, I believe it was changed from around 1974 onwards to a direct gear starter. And my alternator is also driven from the starter motor!

 

[rotrax]

Hi, the starter belt on my DV10 has too much play and slips on the flywheel. I assume that adjusting the tension is the same as any old engine, loosen off the motor and the adjustment bolt and then move to get the correct tension? Any advice or tips?

You have lifted the exhaust valve by operating the decompressor I trust?

If you dont decompress the engne the dynostart belt will most certainly slip.

 

[bumblefish]

You have lifted the exhaust valve by operating the decompressor I trust?

If you dont decompress the engne the dynostart belt will most certainly slip.

I have to lift the decompressor every time! Poor old engine.

 

[DownWest]

I have to lift the decompressor every time! Poor old engine.

Reminds me of our shaft drive borehole pump with a Lister twin. 55 mtrs of shaft down the hole...
So, you had your Wheatabix, Lifted the two decompressors and started cranking, turning the whole gubbins. Gradually got it up to speed and dropped one decompressor, praying it would fire. If not, needed to sit down and admire the scenery before having another go...
Still, as soon as it got going, it lifted 75 cu mtrs an hour. Lot of water.

 

[bumblefish]

Never knew that any Bukh had a belt starter.

There she is!

 

[bumblefish]

Bit of reading here:
https://bukh.dk/upload_dir/docs/FAQ/Bukh ME - Data/Bukh ME - 10-20 ME/Bukh 20 ME - Manuals/Works shop manual/Work Shop Manual - BUKH DV 20 ME.pdf
Section P covers the electrics.
It sounds like you have a Dynastart? If it is the starter that is on a belt. Otherwise it is the alternator..

Bit surprised that a diesel would have a dynastart, But..

My photo from today, She started after getting all the belts tight!

 

[Boater Sam]

Never knew that a dynastart would work on a diesel, thank you.

 

[rotrax]

My photo from today, She started after getting all the belts tight!

I think most of us assumed that the belt was at the correct tension!

It really should have been obvious from the begining of your problem.

 

[Moderator]

Hi, the starter belt on my DV10 has too much play and slips on the flywheel. I assume that adjusting the tension is the same as any old engine, loosen off the motor and the adjustment bolt and then move to get the correct tension? Any advice or tips?

,⁸not

 

[Boater Sam]

,⁸not

What does this code mean please?