Tuesday, Jul 19, 2011 at 10:40
You might need to adjust the brakes at the backing plate or get new linings. If you install new linings you will have to adjust the brakes.
To adjust the brakes:
First, chock the trailer so it cannot move, then release the handbrake and loosen off the cable adjustment at the lever so the brakes are fully released and there is slack in the cable.
Jack one wheel up. At the backing plate there will be an oval-shaped rubber plug. Remove this to get access to the star-wheel adjuster.
Using a brake adjusting tool or a suitable flat screw driver engage the starwheel inside and lever the screwdriver so that the starwheel turns. Check for progress by turning the road wheel. It is possible to be adjusting in the wrong direction. If you are doing it in the correct direction, after a while the brakes will begin to drag when the road wheel is turned. Back off the adjustment so the brakes don't drag and replace the oval dust plug.
Repeat on the other side.
Re-adjust the cable at the lever, ensuring that the brakes don't drag.
Go for a little drive around the block - try not to use the trailer brakes - and feel the hubs. If they've warmed up in that short distance you have dragging brakes and you will have to back them off a bit. Also, make sure the handbrake mechanism is releasing completely - rusted, dirty (I mean built-up mud, etc, not just a coating of brake dust), unmaintained parts can seize and not allow the release springs to work properly. A strip and clean may be in order.
You should not have to add more pulleys to get a double line pull. Also, if you did that you double the travel required to apply the brake - there might not be enough travel in the lever to apply the brakes.
It's been a while since I've done electric drum brakes - any corrections, advice or additions to the above are welcome.
Cheers
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