w124 diodes check

[balge]

hi
the missus took the 300TD to Brum today, then found it wouldn't start, got a jump from recovery (made sure she read him the bit in the handbook first!) and started fine, home in time for tea and cake. Hurrah!

Not had any starting problems before, even through the winter, lights seem a bit dim sometimes but I think one of the h/l earths is weak...She did say she'd had the radio on all the time (five or six hours waiting for sprog to finish a lesson) so maybe just a little too flat?

When I checked it, got 14.2V at fast idle with lights on, and 13.6V with EVERYTHING on, but no more even at high revs. Seems a little low? I thought it would be more like 14.6V peak...

Recovery guy said 'the Volts were ok, but current was low' - I don't know how to check the current, but it occurred to me it could be a diode out in the regulator?

So is there any way to check the regulator? Or the alternator current?

cheers!

 

[balge]

So, managed to get the regulator out....brushes worn down to about 4mm, barely touching I would think
Slapped another regulator in and will try to re-brush the old one.

Any one know if new brushes are available, or what size they are?

cheers!

 

[compress ignite]

Alt brushes

Anglo Carbon

Alternatormart Alternators & Starter Motors Available To Buy Online.

alternator brushes 1993 300TD U.K. - Google Search

 

[balge]

cheers for that

MB list them about a tenner p/n A0001548114 but if I had the length I could go round the corner and get them for 50p.

Anyone got a Bosch part number for them so I can get the length, if not the original new length?

cheers!