Question:
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
Expert Reply:
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
Hayes/AL-KO 12" x 2" Electric Brake Assembly LH
Product Summary:
Electric Drum Brakes
Brake Assemblies
Manual Adjust
Product Specs:
Left Hand Side
12 x 2 Inch
7000 lbs Axle
Brake Assembly Recommendation for a 1983 Hayes Axle with a 9,000 lb CapacityProcedure for Testing Electric Brake MagnetsReplacement Electric Brake Recommendations for an Old Royals International 5th Wheel TrailerSize of Center Hole on Hayes/AL-KO 12 x 2 Inch Electric Brake Assembly # 185100Will Out of Adjustment Trailer Brakes Cause a Fault Code on the Electric Trailer Brake ControllerHole Spacing Measurements on Hayes/AL-KO 12 x 2 Inch Electric Trailer Brake AssembliesReplacement Grease Cap and Wheel Studs for a RV Trailer Hub with ALKO Electric BrakesFeatured Help Information
