Hi Dee,

Take a look at the following article and video. I am sure it will help you with the repair you need to do.
How to wire a trap door power switch.

Hope this helps,
WJA

no not unless you change the gear ratio and gear housing,not cost effective

Hey asl,
The bit should readily pull out [with a pair of pliers?] Even with a bench vise that you can clamp the bit holder in to pull the bit out..you still may end up with a damaged or defective bit holder..it may be better in the long run to just replace the bit holder..[and the bit].:(
Part # 619773-02 avail at eReplacementparts.com : Power Tool Parts and Tool Repair
hope this helps?
cmoorejack

Hey brokenbit,
I was unable to locate a breakdown on a dw752..not avail at the Dewalt service center or ereplacementparts.com...
If it is similar to a dw252..[electric screwdriver]..you will have to remove the nose cone [unless it is already removed!]..and then the 4 screws holding the front housing..then the retaining clip on the spindle needs to be removed along with the ball..and then you can push the spindle out of the housing..
hope this helps?:)
also good job on your other post about the drilling out the reverse screw..I've had to to that several times..ugh
Craig

my bad it dw 257 not 752