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Jeep Brake Booster
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Jeep Brake Booster

Jeep brake booster is the the round, black canister located behind the engine compartment of your Jeep on the driver's side. If you've opened the hood of your Jeep, you've probably seen the brake booster.

Back in the day, when all your Jeep had was drum brakes, power brakes were not really required -- drum brakes worked to provide some of their own power assistance. Since most Jeeps today use disc brakes, at least on the front wheels, the power brakes are necessity. Without the break booster device, your off-road expeditions can result in very tired legs.

Your Jeep power brake is a combination of Master Cylinder and the Brake booster. A Jeep brake booster functions by using vacuum from the Jeep engine to manifold the force that's applied by your foot to the master cylinder. Jeep brake booster actually is a metal canister and contains a check valve and a diaphragm. A rod going from the center of the canister connects to the master cylinder's piston on one side and to the foot-pedal linkage on another. The check valve is a one-way valve it only allows air to be evacuated out of the break booster. When you Jeep engine is turned off, or somehow there's a leak in the vacuum hose, the check valve functions to ensure that air does not enter the break booster. The check valve function is very important, suppose you are out of gas on the highway or your Jeep engine somehow develops a snag and stops functioning- you certainly don't want to lose brake function is such a case. The break booster should be able to provide enough boost for a driver to make several stops even when the engine is not running.

Like your other Jeep parts even the Jeep brake booster can develop snags, primarily they're due to vacuum leaks. At times, one of the hoses that directions vacuum to the Jeep brake booster gets detached or develops a crack. In such cases, rectifying your Jeep brake booster could be as easy as replacing the vacuum line or refastening the hose. A Jeep brake booster is constructed in a way that it's full of rubber vacuum seals and diaphragms, all of which are susceptible to cracks and dry-rotting. When the problem is with the Jeep brake booster canister and it develops an internal leak, the only solution is to replace the entire Jeep brake booster. Sounds like bad news. However, the good news is that the Jeep brake booster is really easy to replace. As we discussed, it's the black canister placed directly under the hood of your Jeep and has no electrical connections or fluid hoses to worry about.

Don't attempt driving with bad brakes on your Jeep. Get yourself a new Jeep brake booster from the trusted brands and replace it yourself.