All,

I may have prematurely bought replacement brushes to do some preventive maintenance work on two alternators for both of my 240s.

The Bosch voltage regulators that I have are as follows:
1 197 311 008, and
1 197 311 002

From what I can tell/find on the internet is this:
1 197 311 008, will work for 90-93 240s, fits a 28mm slip ring, is 14.6 Volts at 90 Amps. So does mean my brushes will not work here???

1 197 311 002, Currently in my 1991 240, fits a 32mm slip ring, is 14.7 volts, unknown amperage. Again, so does mean my brushes will not work here???


Any and all input is gladly welcomed.

Thanks in advance,

Matt

What makes you question their fit? What regulator are the brushes for?

The only brushes that I believe you can buy state that they are for 80 Amp alternators.

However, I do not believe the brushes themselves make a difference, however, I could be wrong as I've been wrong before.

If someone can chime in on this I would greatly appreciate it.

Regards,

Matt

Over the past 35 years, I've replaced alternator brushes in 240's many times. As long as they fit the brush holders, you should be good to go.

Recently, I noticed that the Standard Motor Products Brushes (GB-299) which I had on hand seemed to be a little shorter than the brushes in a new Bosch voltage regulator, so I sprung for some Bosch replacement brushes. When they arrived, the Bosch replacements were the same length as the Standard parts.

You will have no problems with the brushes as long as the cross-sectional dimensions are the same as what you are replacing. Of course, the shorter they are at the onset, the sooner you will have to renew them.

In the heat of battle, I've even pared down brushes the size of Chuckles jellies to fit alternators and they worked fine.

Rich (near The Burgh)

As RicoS says, just check that they fit. Take care to lightly sand off any ridges/indents on the sides that otherwise may make them "hang" and cause bad contact. Probably, many alternators have been replaced when there was just a need for a few minutes of care.
Good luck