Locked up 36 volt motor.

wirenut210

I have a 1984 36 volt DS with a problem that when it gets put on a charger it seems to lock up the motor. It’s been happening for a few months. You have to rock the cart back and forth to free up the motor then it runs fine. Last week I put a full charge on batteries overnight and it’s locked up good now. I can’t free it up. Ideas?

BGW

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jjance

What makes you think it is the motor? There a lot more think in the drive train that could cause that. My thinking is with an 84 cart it would more likely be the brakes or gear box.

rib33024

jack the rear off the ground and see if you can turn the wheels by hand, sounds like it could be a wheel bearing

wirenut210

I'm sorry guys. It's a 1994 model. I jacked it up, and wheels move freely. I spin one tire forward, the other goes reverse.

jakesnake27

That sounds normal, because I think the differentials are technically one wheel drive, giving power to the wheel with the least resistance...

scooterman

Just a thought here but I know there is protection I think from the obc that when the cart it hooked up to the charger it has programming that prevents the motor from coming on, this is a safety reason. It is possible if your cart has this safety feature then once the power is removed it should release the motor or release power to the motor.
If you had to rock the motor to free it up then it works fine after that point until you go to charge it again, then it may be as simple as something in the motor that isn't releasing up. I say this because rocking the cart should also move the motor, If so then it could be as simple as cleaning a part on the motor maybe lubrication then good to go, you would have to be handy with a motor & dealing with the parts inside like the brushes etc.

Again just a thought, unless someone else had this issue or knows what it is, process of elimination is key to saving you money and fixing the issue rather than changing parts or paying someone.

wirenut210

That's kind of on the lines of what I was thinking. I guess I have to pull the motor. Unless there's tests I can do on cart. Can I jack it up, bypass, and hook motor up direct?

simple man

That is the strangest thing I have ever heard! I can in no way see how charging a cart could make the motor lock up! I'll be watching this thread for sure!

gornoman

If the cart is "locked up" jack one rear wheel off the ground leaving the other one in contact and turn the elevated wheel. This will cause the motor armature to spin. If the motor spins it's not locked up and your issue is elsewhere.

mrgolf

I think I would look at the charger lock out wiring, maybe bad connection?