Staying Connected
Gladhand maintenance is critical to keeping the air brake system in working order
The gladhands allow the air brake system of any tractor to be disconnected from one trailer and connected to another. The gladhands connect downstream of the dryer, so failing to care for them will allow moisture into the system and cause trouble. The gladhands have rubber seals that enable them to seal tight even though constantly being turned against one another. The seals eventually wear out because of the turning action and because rubber naturally deteriorates. Take care of the gladhand seals, and you’ll find your air compressor and air dryer desiccant package will last longer, and you’ll get better braking.
Ed Geiger, an owner-operator leased to FedEx Ground, helped us with information about how he keeps his gladhand seals in good condition.
These seals can start to leak at any time, so it’s smart to carry some spares with you, as Geiger does. He says you’ll hear leaks inside the cab from outside when disengaging the parking brake or applying the service brakes. You can sometimes also hear leaks at the air valves in the dash. Leaks should be fixed right away because they will increase air consumption. This means deterioration of the desiccant in the dryer, resulting in a need for service. Leaks also mean much more wear on the air compressor.
Other preventive practices including always hooking the gladhands, sealed, to their holding brackets when dropping a trailer. When they’re not kept sealed, moisture will damage brake system parts and, in winter, can cause freeze-up of the service or parking brakes.
