Converting EZ Loader Tandem Axle Aluminum Boat Trailer to Disc Brakes

Updated 07/10/2018 | Published 07/06/2018

Products Featured in This Question

Dexter Zinc-Plated Brake Actuator w/ Electric Lockout - Disc - 2-5/16" Ball - 12,500 lbs

(55)

$676.75

Replacement Trailer Hub Bearing - 15123

(2074)

$9.82

Replacement Trailer Hub Bearing - 25580

(2074)

$21.82

Kodiak Disc Brake Kit - 12" Hub/Rotor - 6 on 5-1/2 - Dacromet and Stainless - 6,000 lbs

(7)

$730.60

Grease Seals 10-36 (pair)

(2370)

$6.40

Question:

I am thinking of converting my drum brakes to disc but not sure which kit to purchase. I do into salt water occasionally so I am thinking SS Calipers. Trailer Specifications EZ Loader 2001 Model 1-TALB23-27-7900 H1X Capacity: 7900 lbs 5 1/2 on 6, Outer bearing LM67048 1.25”, Inner Bearing 25580 1.74”, 12” Hub

asked by: George S

Expert Reply:

A great place to start your boat trailer brake conversion project is the linked article that covers the topic of changing a trailer to disc brake operation. The article includes links and details about the whole conversion process.

If you choose to convert your tandem axle aluminum boat trailer from hydraulic drum to hydraulic disc brakes you will also need to replace your actuator since disc brakes require higher pressure to operate. You may be able to replace just the master cylinder but if not you'll need a new actuator. I linked our page for disc brake surge actuators. Your existing brake lines will work fine with the disc setup since they will handle the higher pressure.

You'll want to confirm your axles' weight rating to select the appropriate kit; often you can find a sticker or plate on the axle to tell you its weight rating. Kit # K2HR526DS works on axles from 5200 to 6000-lb ratings, has your 6-on-5-1/2 wheel bolt pattern and fits number 42 spindles that use bearings # 25580 and # 15123 and seal # RG06-070.

expert reply by: Adam R