dynamo whine

[Onne]

Hello all
Just one question this time:
How should one grease/oil one's dynamo? Since my trip to my parents in Germany, my dear Elisabeth is whining.
Her belt is tight, I can press the belt about 1/2".

I was first suspecting her waterpump, but that doesn't seem to make that noise, as I checked it with a screwdriver on the pump, other end one the ear.

Well, if any of you need more info, don't hesitate to ask!

[RogerRust]

I always try and keep the fan belt on the loose side. With a dynamo it really doesn't need to be as tight as with an alternator. It cound well be the front bearing on the dynamo. slacken off the belt a little and see if it helps.

[Onne]

Problem is, I tightened up the belt when the whing started, as it was just too loose. More than 1 1/2 " that is.

So how to go further? I thought you could grease/oil your dynamo?

But I might be wrong, mixing up two cars. On a Morris 10/4 you can.

[RogerRust]

I don't think that can do anything with the front bearing. The back one has an oil hole and a bit of felt.

[Cam]

There is a lubricating hole for the dynamo end (rear) bearing. Add 2 or 3 drops of engine oil, but don't overdo it!

The hole is in the centre of the dynamo back plate. If this does not solve the problem, then the bearing might be on the way out, so it's swap it for another spare or get a service exchange one!

[Packedup]

Try pouring some water over the belt with the engine running. I thought my alternator was losing its bearings as I had a very noticeable whooshing noise. I spilled some water topping up the rad with the engine running, and noticed the alternator went quiet. Changed the belt for a nice soft new one, and the noise is gone

[Onne]

Belt is nice, new and soft Gates example. I'll try the drops of oil, it might be the rear bearing on the thing.

Cheers!