How to Convert From Electric to Disc Brakes on Tandem Axle Trailer

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Question:

Yes I have a Question Im wanting to convert My electric drum brakes to hydraulic disk brakes do yall have a package for 2 axles thanks

asked by: Josh

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Expert Reply:

We can get you all the parts needed to convert from electric drum brakes to disc brakes on you tandem axle trailer, but there's a bit of information needed in order to do this. First, since you will be replacing your hubs, you have to find the right disc brake hub, and in order to do that you'll need to know the weight rating of your axle, and also what bearings your current hub has.

You will need to take apart your current hub assembly and look at the bearings themselves; wipe away the grease and you should be able to see the part number stamped directly on them. If you are unable to find them, you need to use digital caliper and measure your spindle to the thousandths of an inch where the bearings and grease seal ride. You can use the photo I've attached to see exactly where you need to measure.

For example, if you have a 3,500 lb axle with inner bearing L68149 and outer bearing L44649 you would need the Kodiak Disc Brake Kit # K2HR35D.

If you let me know what your axle capacity and bearing numbers are I can find the right kit for you, otherwise I have added a link below to our selection.

After that, you will also need a brake line kit for a tandem axle trailer, the Kodiak Hydraulic Brake Line Kit - 15 feet # 15TA-BLKIT, 20 feet # 20TA-BLKIT or 25 feet # HS496-252.

Finally, if you don't have one, you'll need a disc brake actuator with the correct capacity such as the Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 7,000 lbs # DM62VR. I have added a link below to our selection of disc brake actuators as well so you can choose the right one for your trailer.

expert reply by: Kyle S

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Where to Measure Spindle For Bearings & Grease Seal For Disc Brake Hub
(click to enlarge)

Answer 1

In order to choose the correct replacement axle for your boat trailer you will need to know the dimensions of your current axle's hub face to hub face and spring center to spring center as in the diagram I have added; the other thing you need to…

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Answer 2

To add hydraulic disc brakes to your trailer you will need a few parts. For a hub and rotor assembly I recommend the Kodiak Disc Brake Kit - 10" Hub/Rotor - 5 on 4-1/2 - Dacromet - 3,500 lbs #K2HR35D which will allow you to use your 14"…

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Answer 3

In regards to surge brakes, disc brakes require a much higher psi than drum brakes for proper operation therefore the two types of brake actuators (disc/drum) are not cross-compatible. The Demco Hydraulic Brake Actuator part #DM62VR would be a great…

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Answer 4

The Replacement Shock Absorber Spring Kit #TK71-758-00 is the correct shock for your UFP Surge Brake Actuator. The picture you included does not specify if it is for a disc or drum brake set, so I have found both for you to choose from. Disc Brake…

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Answer 5

The DB-42 is an older style of UFP 3,500 lb axle disc brake components. The Kodiak kits like the part #K2HR35D will fit in replacement of that and would be an upgrade so this would be a great solution. It comes with everything you'd need to…

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Answer 6

There is only a single difference between the two 3,500 lb Kodiak disc brake hub and rotor kits you asked about, and that's the protection given to the calipers. - KodaGuard-Coated Cast Iron Calipers: Kodiak Disc Brakes #KOD59FR - Dacromet-Plated…

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Answer 7

After speaking with EZ Loader what you have on your trailer is a 3,700 lb axle. From what they said the axle was upgraded even though your overall trailer capacity is 3,100 lbs. Although this uses the same #L44649 outer and #L68149 inner bearings,…

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Answer 8

I did some looking and found that the 46210 and 46845 hubs you currently have use the same #L68149 inner bearing and #L44649 outer bearing. However, as we do not carry the Tie Down Engineering Vortex hubs, I cannot say what all will fit them,…

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Answer 9

Trailer wheels that are 14.5 inches in diameter are hard to find as half sizes like this are not common at all. The overall diameter of the tire size 7-14.5 is 27.7 inches. The most similar diameter trailer tire size is the 205/75-15 which has a…

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Answer 10

The closest replacement options we have available to the drop center torsion axle currently installed on your EZ Loader Boat Trailer is going to be an Axle-Less System from Timbren. The Timbren Axle-Less Trailer Suspension System #A35RS545E might be…

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Answer 11

The Kodiak Dacromet Disc Brake Conversion Kit, item #K2HR35D, would be a good choice for conversion to disc brakes on your boat trailer. We have not had the opportunity to do a video installation for the disc brake conversion yet, but I will go…

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Answer 12

The Hydraulic Trailer Brake Kit - Uni-Servo - Dacromet - 10" - Left/Right Hand Assemblies - 3.5K #AKUBRK-35-D will fit the traditional 3/16 inch brake lines like #18SI-BLKIT or #20TA-BLKIT which have the thread size of 3/8"-24. You…

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How to Convert From Electric to Disc Brakes on Tandem Axle Trailer

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