Disc Brakes For 12,000 lb AL-KO Axles on Gooseneck Trailer

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Question:

Hello, We have a 25 Gooseneck Flatbed trailer that has tandem 12k AL-KO wet axles with drum brakes and leaf spring suspension. We want to change it from drum brakes to Disc Brakes as well as wed like to add air ride suspension. Can you help us with the parts we need to do this? Thank you

asked by: Jimmy E

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Expert Reply:

We do offer one kit for disc brakes for 12,000 lb AL-KO axles, which is the following from Kodiak:

- Kodiak Disc Brake Kit - 11.35" Rotor - #120 Spindle - 12K - ALKO # K2HR12A11-120DW

These come with the races, but do require the bearings and seal to be purchased separately. You'll need Seal # 10-56, Bearing # TRJM511946, and Bearing # JM205149.

As for the suspension unfortunately we do not offer that for the 12k AL-KO axles.

expert reply by: Kyle S

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Answer 1

Yes you will need a new electric over hydraulic actuator to go from drum to disc as the disc brake setups require a higher psi rating. The best option is the HydraStar part #HBA16 as it has the best reputation for reliability and is the fastest…

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Answer 2

The #99 trailer spindle is typically found on 9,000 lb and 10,000 lb axles. This is not a spindle that we carry at this time, but I did find some of the measurements. I have attached a diagram showing the dimensions of a #99 spindle for you to check…

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Answer 3

I went out to the warehouse with a handful of sockets to see which size fits over Flange Wheel Nut - 5/8" Item #95188. It takes a 1-1/8 inch socket. I have linked a video review of this nut for you.

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Answer 4

Hey Richard, thanks for reaching out! The Dexter DX7.5 Drop-N-Go Brake Actuator #099-175-00 is a great option for a replacement actuator because it's a direct replacement for the common Model 60 actuators that were popular in the '90s.…

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Answer 5

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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Answer 6

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 7

To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that…

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Answer 8

The manual lockout on your Atwood 85778 surge brake coupler is there so that you can back up the trailer without the brakes locking up on you. Yes you can safely tow your trailer with the broken manual lockout, you just have to make sure you…

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Disc Brakes For 12,000 lb AL-KO Axles on Gooseneck Trailer

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