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Hydraulic Trailer Brake Assemblies
Size
Manufacturer
Capacity
per Pair
Left Hand
Right Hand
7" x 1 3/4"
Atwood
2,500 lbs
Parts Only
Parts Only
Dexter
2,500 lbs
10" x 2 1/4"
Dexter
3,500 lbs
Dexter
3,500 lbs
Atwood
3,500 lbs
Parts Only
Parts Only

Bendix
3,500 lbs
Parts Only
Parts Only
Demco/Dico
3,500 lbs
Demco/Dico
3,500 lbs
12" x 2"
Dex
5,200 lbs
Dex
6,000 lbs
Dex
5,200 lbs
Demco/Dico
6,000 lbs
Demco/Dico
6,000 lbs
12" x 3 1/4"
Hayes
8,000 lbs
12 1/4" x 3 3/8"
Dex
9,000 lbs
Dex
10,000 lbs
12 1/4" x 3 1/2"
Hayes
12,000 lbs
12 1/4" x 4"
Dexter
10,000 lbs
12 1/4" x 5"
Dexter
12,000 lbs
Dexter
15,000 lbs

How to Select Hydraulic Trailer Brakes & Trailer Brake Parts

THE SINGLE-SERVO / DUO-SERVO DIFFERNCE:

1.) SINGLE-SERVO: Single plunger coming from the wheel cylinder, most commonly used with surge brake applications.

2.) DUO-SERVO: Two plungers coming from the wheel cylinder, stops vehicle in both forward and reverse motion.

SELECTING HYDRAULIC TRAILER BRAKE PARTS:

  1. Determine the size of your trailer brake.
    A. Measure the diameter of the mounted brake shoe.
    B. Measure the width of the lining.
  2. Determine the manufacturer of your trailer brake.
    A. Is the manufacturer's name on the backing plate?
    B. Compare the hydraulic trailer brake to those found on this website.
  3. Select the trailer brake part you need. Though many trailer brake parts are shown, we carry only the replacement parts numbered. The words "Parts Only" indicate that complete brake assemblies are not available.

Reasons Why Trailer Brake Hardware Should Be Replaced:

  1. Worn, weak return springs will cause the brake linings to drag against the drum and cause premature trailer brake failure.
  2. Hold-down springs will lose their tension and allow the brake shoes to wobble or ride up against the face of the brake drum, causing premature lining failure.
  3. A frozen adjusting screw will not allow shoes to be adjusted properly.
  4. Rubber dust plugs will crack with age and allow dirt to contaminate linings. (Not shown.)
  5. A stretched self-adjusting cable prevents the self-adjusting lever from properly aligning the shoes, (Not shown or illustrated.)