Also, air dryer performance depends upon proper spec’ing and brake system maintenance, he says. “If there is a leak, you’ll hear air being expelled.”īendix offers a remote diagnostic unit, or RDU, to make it easier for technicians to interpret trouble codes and enable them to do so without using a laptop, Andersky says. “There will be an audible change in the sound when there is a problem,” Andersky says.
BENDIX ABS SENSOR ADJUSTMENT FULL
Check compressor performance with a blot test for the air dryer that’s available in the aftermarket, Melletat says.įred Andersky, Bendix’s director of marketing for controls, says technicians should shut off the vehicle and then turn the ignition back on while listening for the “chuff test,” which runs the ABS valves through a full operating sequence. Air dryers normally work well and provide reliable service unless the air compressor is worn and passing oil, thus contaminating the desiccant. Since ABS valves handle air, clean air will preserve them by preventing corrosion, so servicing the air dryer as required will help reduce failures.
“In a few applications, like city transit, it may be advisable to clean it up and relube it periodically.” “It’s thoroughly lubed at the factory and considered to be lubed for life, but tell your technicians to check it,” Melletat says. A spring clip provides the holding force.” However, if a high dose of magnesium chloride has corroded the fixture, it may expand and crush the sensor, he says it no longer will adjust properly on its own, or be possible to adjust it manually. “The holding block is ferrous with a brass fixture inside. “Always adjust it this way when servicing the brakes,” Melletat says. “There is no preventive maintenance as far as we are concerned except for the wheel speed sensor.” The mechanism is self-adjusting, he says, and if a technician gently pushes it down until it contacts the wheel, it will adjust itself properly to the proper 0.040-inch gap unless it’s frozen in its holding block.
“ABS maintenance is pretty simple because of the system’s self-diagnostic capability,” says Mark Melletat, MeritorWABCO’s senior manager of marketing and customer service. While active testing of ABS with specialized equipment at roadside is impractical, a lit-up ABS malfunction indicator lamp is considered grounds for a citation on any vehicle new enough for ABS to be legally required. Further enhancing equipment by retrofitting stability control carries the process further.ĪBS is designed to be self-diagnosing, which has been a boon when it comes to inspection and troubleshooting – but it also has opened the door for inspectors when it comes to giving out citations. Maintaining antilock technology properly can help reduce accidents and improve a fleet’s inspection record, both of which will help with insurance rates – along with reducing downtime. A Bendix wintertime test demonstrates how ESP can maintain control even on slick surfaces.