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Pilot Hole Dimensions of 12 Inch Electric Brake Assemblies And Recommendation With 4 Bolt Mounting  

Updated 03/06/2018 | Published 03/04/2018



Question:

Electric Trailer Brake Kit - Self-Adjusting - 12inch - Left and Right Hand Assemblies - 5.2K to 7K Item # AKEBRK-7-SA the above brake backing plate, i need to know what is the diameter of the main hole in backng plate, if i have that i know then if goes over the spindel and will be centered on the axle tube, as this is a 4 bolt it is goign on ,,please provide the opening i knwo you have a 4bolt and 5bolt backing plate also, can you provide the main hole dimension on that as well ? thanks

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Expert Reply:

I went out to our warehouse to measure for you and both the # AKEBRK-7-SA and the # 23-106-09 assemblies have a pilot hole dimension of 3.23 inches. Because you mentioned you have a 4 bolt assembly, that narrows down your axle to an AL-KO axle and you will definitely want the brake assembly # 23-106-09 and # 23-105-09. The other assemblies won't accommodate your 4 bolt mounting pattern.

You may also want the mounting bolt # 7-5, lockwasher # 38LW, and nut # 38N. If you don't have an adjustment tool, I recommend the Brake Adjustment Spoon # W80630.

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Jason S
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