Help Wiring my First Federal Q

DFD1994

Member
I recently purchased a Federal Q to place on the Ford C8000 Pumper that I am in the process of restoring. The unit arrived in apparent good working order with the bearing looking good and free spinning well. I was able to easily wire and trigger the brake solenoid, however I cannot find any indication as to where the connection for the positive terminal on the motor. I will attach some images below for reference. I suspect the positive wire was totally removed when the truck it came off of was stripped so there is not old cable to trace.

On a side note, if anyone has any ideas on how to date this accurately I would be interested to know. The seller indicated it was 1960's but I am not sure of the accuracy of that. Since this is a grille mount and not a bumper mount there isn't a plate like you would normally see on the bullet housing.IMG_4918.jpgIMG_4919.jpgIMG_4921.jpgIMG_4920.jpg
 

Bvfa23

Junior Member
Typically - the large power wire from your solenoid (which would be wired directly to the batt with a large breaker) would go to the big ole stud in the second picture on the top right of the motor, then the motor grounds through the mounting plate.

Hope that helps...........................
 
OP
OP
DFD1994

DFD1994

Member
Okay, excellent. I suspected this was the case but I currently have continuity between the base and that bolt so is that implying I have a ground short somewhere? I may just be misunderstanding.
 

MtnMan

Senior Member
Okay, excellent. I suspected this was the case but I currently have continuity between the base and that bolt so is that implying I have a ground short somewhere
The motor windings are very low resistance, hence the large startup current.
 

Bvfa23

Junior Member
Yeah, as far as I'm concerned it would be bad if the base to stud was OL or infinite resistance, that would mean the windings are broken somewhere.

I would measure the Ohms from base to stud and if its almost 0 then you may have a short to the case BUT I would still put a set of cables to it and give it a shot.
 

Bvfa23

Junior Member
LOVE that wind down!!!!! They don’t make them like they used to!!!! If you ever want to part with that Q you got your buyer right here.
 

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