what size is the center hole. I believe mine is 3.5 i have ordered others and they were 3.25 thanks.
asked by: Gary S
The center hole diameter on the Hayes/AL-KO 12 x 2 Electric Brake Assembly, part # 185100, is 3-1/4 inches (3.25).
This # 181500 brake assembly has both the standard 4-bolt mounting pattern used on Kelsey-Hayes brakes and the standard 5-bolt mounting pattern.
The mounting hole dimensions on the 4-bolt pattern 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.
On the standard 5-bolt mounting pattern the distance between the bolt holes is 2-1/8 inches on center except for the bottom 2 holes. The 2 bottom holes are 3 inches apart on center.
expert reply by: Jeff D
Product Page this Question was Asked From
Electric Drum Brakes
Left Hand Side
12 x 2 Inch
7000 lbs Axle
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