RXV Motor Brake Question

[jneubig]

Greetings all. It appears as though my newest cart has a failed motor brake. It's a 2012 RXV. I tried to move it yesterday and it shuttered then stopped. I can hear it going through all the checks, but the brake is not releasing. I tried the tow switch while in neutral and hear a light click but still stuck. I ordered a new one and decided to pull this one off a little while ago. Curiosity got the better of me and I opened it up. I heard a little pop when I did, sort of like it broke loose. It appears to have quite a bit of rust and corrosion inside. Does anyone know if a thorough cleaning and perhaps a light bead blast or soda blast might get this one working again?
I didn't smell the nice burnt smell my last cart had, nor did lots of little pieces fall out of this one. Here are some pictures:

[BobBoyce]

Originally Posted by jneubig

Greetings all. It appears as though my newest cart has a failed motor brake. It's a 2012 RXV. I tried to move it yesterday and it shuttered then stopped. I can hear it going through all the checks, but the brake is not releasing. I tried the tow switch while in neutral and hear a light click but still stuck. I ordered a new one and decided to pull this one off a little while ago. Curiosity got the better of me and I opened it up. I heard a little pop when I did, sort of like it broke loose. It appears to have quite a bit of rust and corrosion inside. Does anyone know if a thorough cleaning and perhaps a light bead blast or soda blast might get this one working again?
I didn't smell the nice burnt smell my last cart had, nor did lots of little pieces fall out of this one. Here are some pictures:

It looks like it just rusted together, should be repairable.

Bob

[jneubig]

Thanks Bob. I'll take it to the shop tomorrow and see what I can do to clean it up.

[BobBoyce]

Originally Posted by jneubig

Thanks Bob. I'll take it to the shop tomorrow and see what I can do to clean it up.

Yea the motor brakes are not weatherproof or waterproof. The semimetallic clutch-like disc can rust to the metal surfaces. Don't let it sit too long between runs to keep it from rusting up again.

[cgtech]

The newer style HD motor brake does have a O-ring on the back to help seal it up, but I have seen some problems with it on Danaher cars. So I can only suggest it on Curtis cars.

[jneubig]

I gave it a good cleaning and I'm back in business. Working great now. Thanks for input.

[BobBoyce]

Originally Posted by jneubig

I gave it a good cleaning and I'm back in business. Working great now. Thanks for input.

Remember, in your humid environment, this is always a risk for brakes or clutches that are made of semi-metallic material to rust. Semi-metallic means that they are comprised of a composite that contains iron and other metals.

The brake calipers in my car rust to the rotors when I leave it parked for a week or more. You just need to be sure to move it once in a while to keep it freed up. You can't really spray it with a protectant without affecting operation.

Bob

[agpfl]

Would a light sanding with a fine grit sandpaper work?

I have a brake that looks like this also, except it was not completely locked up, just heavy resistance disengaged.

[HiTechRedNeck]

Also--- clean motor lug on output shaft ......
Rust on lug will cause brake to stick and not release properly.....
get at it with wire brush

[agpfl]

Cleaned it up and all seems good. There was a good amount of rust in there.