When drilling holes deeper than 4-6inches, the drill stops, with the trigger fully depressed. Sometimes, it will start spinning again and stop. It only shows this during deeper holes. I've borrowed the same drill from a friend and it can drill 10+ inch holes without having a problem. This is for the 11536C, which is the smaller 36V rotary hammer. Thanks!

you need to replaced the power switch .

Make sure the brush holder and coil are seated correctly.

Sounds like a bad trigger.

I suggest that you check the brushes, and the armature. Worn out brushes sometimes cause that condition.

Also, try different trigger settings, to eliminate that as an issue.

I'm afraid it's dead! Burned out motor coil.

bad battery...
Ck

Sounds like a burned out motor.

Sometimes you can replace the brushes and make them work again.

When operating that drill, make sure that you are not overheating the motor.

Depending on the material that you are drilling, you may need to use the drill on a slower speed in order to not overheat the motor.

Another way is to have more than one drill, and switch to a cool one as soon as you notice heat on the in-use drill.

If your drill is battery powered, stop using the drill and change the battery as soon as the battery dies enough to slow the speed of the drill.

Operating the drill under reduced power is very hard on the motor for several reasons.

check the trigger switch inside the gun , a few small screws in the casing will have to be unscrewed then take the gun in half and check the trigger switch connections and possibly replace the switch I have had this problem before with no obvious signs of wear or un connected connections but then i replaced the trigger switch and it worked fine

Had the same problem figured out it was a wiring problem with the trigger, works good now.

Check the cord...sometimes if the brushes are not seated well or if there is a cut in the cord you will run into that problem....If it is not that then possibly you just have a faulty drill