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Old 07-22-2019, 03:16 PM   #1
Eddy
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Join Date: May 2017
Location: Radium Hot Springs
Posts: 14
M.O.C. #19781
Dexter brakes

This is one I haven't heard before. I had been getting a "Trailer wiring fault" message on my F350 and narrowed the problem down to the right rear wheel. After taking off the hub I found that, sure enough, the magnet wires had been severed. After taking a close look, it seems that the cam on the actuator arm is missing! I don't see how it could have come off and there were no bits or pieces in the hub so it seems like it was never there.

Anyone seen this before?

Pic 1 - trailer brakes
Pic 2 - missing cam
Pic 3 - right front brake showing where cam should be

Pic 1.jpg

Pic 2.jpg

Pic 3.jpg
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Old 07-22-2019, 03:44 PM   #2
prndl
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Join Date: Apr 2017
Location: 1000 oaks
Posts: 519
M.O.C. #19630
I don't know what you are looking for but the square thing between the shoes above the pivot is the thing that pushes on the forward shoe and the forward shoe pushes the rear shoe outward at the same time. It is not a "cam" type of operation.

oh now I see that you are missing the square thing on the top pictures.
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