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The experienced operator, at the outset of each day’s usage of an AB vehicle, will do a repeat test on the air system, by “fanning” the brake pedal till the pressure drops below the cut-in point, and appearance to see which the compressor again cuts in and gathers pressure within the reservoir tanks. He will shut the engine down, and perform a walkaround, listening for just about any air leaks which can be present, correcting them or contacting professional help to remedy your situation. He will also listen for leaks if the brakes are applied – this can be best done with 2 different people, a listener plus an applier.
When replacing disc brake pads, will not push the pistons back into the caliper bores without first opening the bleeder valves. Unless they can be opened, any crud from the caliper is certain to get pushed back into the brakes lines. By opening the bleeders, some with the crud will likely be expelled.
Most motorists ignore their brakes until they acquire some kind of warning, whether that concerns inadequate braking, uneven braking or squeal or grinding noise. Inspect the brakes routinely once the customer brings the automobile in for service. If the linings are becoming thin, create a notation within the customer’s receipt to plant the seed for service soon.
Warnings may come inside the form or noise, including the metal tabs the GM has utilized for years to scrape the rotor if the linings get thin. Of course, vehicles which are not equipped with these sensors can certainly make noise when metal contacts metal. At this point, new rotors are in all probability in order.
BRAKE BOOSTER HILUX KZN165
BRAKE SERVO FORTUNER HILUX
VACUUM BRAKE LAND CRUISER