Author Topic: mark 5 not charging  (Read 1890 times)

0 Members and 1 Guest are viewing this topic.

Offline jyprfc

  • Full Member
  • **
  • Join Date: Nov 2013
  • Posts: 29
  • Location: ky138eg scotland
mark 5 not charging
« on: 10 Mar 2014 at 11:54 »
hi everyone working on rebuild just had magdyno overhauld  new mcr2 fitted still not charging jim

Offline eddie

  • Master Member
  • ****
  • Join Date: Mar 2006
  • Posts: 1655
  • Location: Hampshire, UK
Re: mark 5 not charging
« Reply #1 on: 10 Mar 2014 at 12:06 »
Jim,
       If your dynamo has been sat around for some time since having it overhauled, it may have lost it's residual magnetism. To overcome this - assuming the bike is otherwise ready to run - remove the 2 wires from the back of the dynamo. You will see that the 2 terminals are labelled 'D' and 'F'. With a spare piece of wire, connect the 'F' terminal to the live side of the battery for a couple of seconds (be careful, the wire may get hot!). This will restore the magnetism in the field coils. Having done this, replace the 2 original wires and start the engine - the dynamo should now provide a charge with the correct polarity for your battery.

  Regards,
                Eddie.

Offline jyprfc

  • Full Member
  • **
  • Join Date: Nov 2013
  • Posts: 29
  • Location: ky138eg scotland
Re: mark 5 not charging
« Reply #2 on: 11 Mar 2014 at 01:03 »
thanks eddie I will give it a try  jim