Forklift Brake - A brake where the friction is supplied by a set of brake pads or brake shoes which press against a rotating drum shaped unit known as a brake drum. There are a few specific differences among brake drum types. A "brake drum" is normally the explanation given whenever shoes press on the inner surface of the drum. A "clasp brake" is the term used so as to describe when shoes press against the exterior of the drum. One more kind of brake, known as a "band brake" makes use of a flexible band or belt to wrap round the exterior of the drum. If the drum is pinched in between two shoes, it can be known as a "pinch brake drum." Like a typical disc brake, these types of brakes are rather uncommon.
Before nineteen ninety five, early brake drums required consistent adjustment regularly so as to compensate for shoe and drum wear. "Low pedal" or long brake pedal travel is the hazardous end result if adjustments are not executed sufficiently. The vehicle could become hazardous and the brakes can become useless whenever low pedal is mixed with brake fade.
There are a variety of Self Adjusting Brake Systems obtainable, and they can be categorized within two major types, RAI and RAD. RAI systems have in-built tools which avoid the systems to recover when the brake is overheating. The most popular RAI manufacturers are Bosch, AP, Bendix and Lucas. The most well-known RAD systems consist of AP, Bendix, Ford recovery systems and Volkswagen, VAG.
The self adjusting brake will usually only engage if the lift truck is reversing into a stop. This method of stopping is acceptable for use where all wheels use brake drums. Disc brakes are used on the front wheels of vehicles today. By functioning only in reverse it is less likely that the brakes would be adjusted while hot and the brake drums are expanded. If adapted while hot, "dragging brakes" can occur, which increases fuel intake and accelerates wear. A ratchet mechanism which becomes engaged as the hand brake is set is another way the self adjusting brakes can function. This means is just appropriate in functions where rear brake drums are used. When the parking or emergency brake actuator lever exceeds a particular amount of travel, the ratchet developments an adjuster screw and the brake shoes move in the direction of the drum.
Situated at the base of the drum sits the manual adjustment knob. It could be adjusted using the hole on the opposite side of the wheel. You would have to go underneath the vehicle using a flathead screwdriver. It is very important to be able to adjust every wheel evenly and to move the click wheel correctly in view of the fact that an uneven adjustment may pull the vehicle one side during heavy braking. The most efficient way to make sure this tedious job is accomplished safely is to either lift every wheel off the ground and spin it manually while measuring how much force it takes and feeling if the shoes are dragging, or give each one the exact amount of manual clicks and then perform a road test.
Click to Download the pdf