I also had a squeaky noise from the motor on my BM 4002. I managed to put a tiny drop of oil in between the pulley and the motor housing. That did the trick, the noise disappeared. I used ordinary sewing machine oil.

/riis

BM 4002 should of course be BG 4002

To answer your question: No. you can't.
The motor sits inside the metal housing that you can see.
In other words, it's a metal housed motor inside a metal housing with rubber between for noise dampening.
But you can open the motor, clean and lubricate the bearings and if you are VERY careful you can also put it
back together without damaging the brushes etc.

It's sintered bronze bearings so you need to use an oil with the right additives for sintered bronze and ideally you will have to
boil the dry remains of old oil out and press fresh oil into the pores of the bronze material using vacuum - sintered bearings are lubricated by
capillary action, taking oil from reservoirs INSIDE the sintered material. They are not directly lubricated on their contact surfaces as you would
normally see.
Sewing machine oil will work right away but only for a relatively short time. Often just days or weeks depending on the motor and oil type.
It doesn't have the right additives, so it will be worn off (wiped away from the contact area) quickly - if it doesn't evaporate sooner.

Martin

Thanks for your replies.

Martin, is a replacement (or alternative) motor available?

Does the servo motor use the same bearing arrangement?

Regards,

Simon

That would be no and pretty much yes in that order.
Two different servomotors were used in production, one is slightly easier to work on than the other.

You may be able to find a good used motor from a donor Beogram but it's safe to say, that it would also need a treatment.
But most motors are indeed repairable.

Martin

Repairing an existing motor rather than taking a still working motor from another, restorable Beogram is the best option. Martin, do you offer motor repair service for the Beogram 4002 DC type motors?

-sonavor

Excellent post!! Thanks Martin! I gave the oil infusion a try: 

Does the Beogram 1202 also use this type of oilite bearing?

Does any one have an I depth step by step procedure to overhauling a 1202 motor?

Thanks

I know it is an old post but I try all the same:

Some years back I had an issue of a ticking sound in the motor of my TX2. Opening up the motor I found that the top washer (black) sitting between the coil rotor and the top brass bearing had pulverised. I didn't manage to get the motor back running so I left it there. Now years later I went back to the project, found some traces on the motor PCB that were broken, repaired them, and now the motor is back spinning.

I will proceed with the oil infusion, but I also need a new washer replacement, and I don't have the broken pieces any longer. 

Does anyone know what kind of washer, and dimensions, I need?

Thank you for your input

Jens