Tips when replacing Hyundai Trajet rear pads and disks

This page does not explain how to replace or overhaul your Trajet brakes. Please have a look at the Hyundai Trajet Service Manual for details of how to do that. However, if you are already confident that you can work on them safely, it includes a couple of tips that might save you some time. Note, the brakes on the Hyundai i30 seem to be just the same, so these tips probably apply to other Hyundai and Kia models.

Replacing the rear discs

I recently replaced the rear pads & discs on my Hyundai Trajet, and spent a couple of hours trying to remove the discs, when it should have only taken a few minutes. The main problem was that the disk is difficult to remove due to pressure on it from handbrake shoes, inside the drum portion of the disk. Make sure that you disengage the handbrake to remove this pressure. If it's still too tight for some reason, there's an adjustment you can make at the brake end.

Position of brake adjuster wheel

First remove the small rubber plug in the brake disk, then turn the disk so that the hole is at the bottom. You then need to use a small flat-headed screwdriver or similar implement to push against the adjuster wheel and turn it about five or six notches. This will move the brake shoes back from the drum, and make it easy to remove the disk. You will need to adjust this back after replacing the drum, these are not self-adjusting.

View after removing the brake disk

Problem with ABS

I had one other problem with the brakes, after about 40,000 miles the car started to make a knocking noise when braking. It seemed like the ABS was coming on, but for no obvious reason. After replacing all the brake shoes and tyres, the problem still continued. I then found out the problem was due to the ABS ring which is attached to the drive shaft on each wheel. This consists of a small wheel with notches on it, which the ABS system uses to detect whether the wheel is turning or not. If the brakes are applied, but the wheel is not turning, the ABS decides that the wheel is skidding, so releases the brake pads. However, the ABS rings are prone to crack, particularly in corrosive conditions, and this stops the ABS system working correctly.

At that time the car was under the Hyundai five year warranty, so I just took it back to the garage and they replaced the front right and left driveshafts. That would have cost several hundred pounds out of warranty, so I had a look around to see what options were available. I was pleased to see that it is now possible to buy Trajet ABS rings for about 15 pounds, these can be fitted to the existing driveshaft without having to buy a new driveshaft.