4-Hole Spacing Measurements on Dexter 12 x 2 Inch Electric Trailer Brake Assemblies

Question:

The four bolt holes that are also on the backing plate . I have one that is a 12X2 drums that has the top holes on the backing plate are 3 inches apart and the bottom are 2 1/2 apart and they are 3 7/16 from top to bottom holes . the bolts are 7/16, the hole in the center is3 1/2 I am working on an old 1980 WW stock trailer .

asked by: Alan L

Expert Reply:

The mounting holes (4 hole pattern) on Dexter brake assembly, # 23-106-09, are 3.09 inches on center for the top two holes and 2.55 inches apart on center for the bottom 2 holes. Top to bottom they are 3.40 inches apart on center. The holes can accommodate a 7/16 inch bolt size. So it appears to be a match with the mounting plate you have. The matching left hand assembly is # 23-105-09.

expert reply by: Michael H