Show whole topic Dec 04, 2017 8:27 pm
Mark Offline
Member
Registered since: Feb 05, 2009
Location: Worcestershire


Subject: Re: Dynamo removal
Hi Edward

I think the above advice on the electrical performance of your dynamo is pretty comprehensive.

To answer your question about difficulty removing the unit I can advise as follows: The low chassis dynamo has a dog drive that fits into a slot in the end of the crankshaft. This has to be tight so that you do not get any chatter between crank and dynamo. To remove the dynamo remove all the bolts and the wiring and remove the end cover (so that it does not get dented). Using a hide mallet tap all around the dynamo body near its centre (the strongest point of the steel body). Slowly the dynamo will work free but make sure you support it to avoid it suddenly dropping onto the garage floor. You should not loose any oil removing the dynamo as the sump is far lower.

If you have a supercharged car the principle is the same but be gentle and take your time as you do not want to damage the blower drive box. On the blown car it is common to lose some oil through the dynamo casing when driving as there is no oil seal between the drive box, where oil is swirled around by the spiral bevel gears, and the dynamo. However, in my experience a little oil loss through the dynamo casing does not affect its performance

Hope the above helps
Regards
Mark