![]() It usually takes a 9/16 wrench to turn it. Locate the adjusting mechanism on the slack adjuster. If you have a car hauler, lowboy or RGN (removable goose neck) the adjustments are usually made from the top of the trailer so it’s something you do while laying on your stomach looking down. Then climb under trailer and position yourself under each brake chamber. If you’re pulling different trailers from day to day, you don’t know when the last time the brakes were inspected so it’s up to you to do it.įirstly, make sure your trailer brakes are released (keep tractor brakes engaged) and wheels chocked. You can check out their service bulletin here. Bendix, one of the largest manufacturers of brake systems recommends that you check adjustment on manual slack adjusters every month, 8000 miles or 300 operating hours. A proper lubrication schedule is sometimes overlooked, but extremely important as it will prevent most systems from early failure. Most newer tractors have self Brake Adjustment so there’s nothing to do there but maintain proper lubrication for the system to work. But don’t overlook the brakes, especially if you travel the mountains! Tires and lights are the first things most drivers look at and rightfully so. This will help increase their longevity by reducing wear.Nowadays, drivers have more and more often to work by the “drop and hook” operation and with each pre trip, they wonder what kind of surprises they’re going to find. Make sure that after application, repeat the greasing procedure after every 25,000 miles have been driven using the same slack adjusters. Right after installation and adjusting the angles, apply generous amounts of grease to the slack adjuster mechanism. It is recommended that slack adjusters be well lubed up at all times. Set all the slack adjusters to this angle. This angle even on brake application should only be slightly higher than 90 degrees. Your friend must apply the brake while you check the angle that the slack adjuster arm and the actuator push rod are making. Now, after your installation is done, you have to check the adjustment of the slack adjuster. Line the yoke pin hole with the arm hole and install the yoke pin and the cotter pin into the mechanism. The adjustment screw on the slack adjuster can be rotated. ![]() These are parts of the assembly of the slack adjuster. Make sure that it is a tight fit as it has to hold the slack adjuster into place at all times during brake operation. Step 3 – Install Retaining MechanismĪfter you have installed the slack adjuster onto the brake cam shaft, re-install the retaining mechanism on the end of the brake cam shaft. ![]() Make sure that the adjustment screw of the slack adjuster is only so tight so that there’s room for you to add grease. This angle should be maintained when the brakes are not applied. The trick is to make sure that the slack adjuster arm and its actuator push rod that helps close the adjuster on application of brakes is at a 90 degree angle. When it has slid on completely, rotate the slack adjuster until it is secured into place. To install the slack adjuster, first slide the adjuster on to the spline end of the brake cam shaft. Use the mechanic’s kit for appropriate tools to remove the mechanism. To install the slack adjuster, first remove the retaining mechanism from the brake’s cam shaft. It is installed at the end of the brake cam shaft. Your vehicle’s brakes come with a retaining mechanism. ![]()
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