[Ford-ferguson] 641 charge system

[Chris Britton]

You may be lucky and the charge system only needs to be repolerized.

First.. I'll assume that this is a gas job, and is still 6v positive ground.

Try repolerizing the OEM B-Circuit Genny and regulator.  Easiest way to do 
this is to take a jumper wire and jumper battery to field.  You can do this 
right from the battery terminal to the field tab on the genny.. electrically 
it will be the same as if you jumped it at the regulator.

This should produce a mild spark/arc.  Now, start her up and see if the red 
lamp doesn't go off  around 600 rpm or so.  If not, jumper once again (full 
field ) and see if the lamp goes off.  If the lamp goes off only while bat 
is jumpered to field, and then comes back on when you remove jumper, 
throttle up to 1000-1200 rpm and check again.  If this keeps the lmap off, 
genny is worn.. likely needs brushes and mica trim.  If the rpm doesn't 
change anything, then likely the field control int he regulator is shot. 
New 6v b-circuit regs can be had between 25-40$

Soundguy

>From: Jack Eads <jackeads at bellsouth.net>
>owner of a Workmaster 641. After sitting idle for
>several years it was professionally repaired to running condition.
>Apparently the generator is not working (red indicator light
>continuously on). Looking for advice on repair/rebuild vs replace
>generator (6 volt system).
>Any particular recommendations on cleaning prior to beginning the
>restoration process? Is pressure washing safe to remove caked on mud
>and grease?