reminds vehicle owners of its clear, step-by-step guidelines for addressing out-of-adjustment wheel-ends equipped with automatic slack adjusters.
To measure the chamber stroke on each wheel-end, Bendix typically recommends checking the distance from the chamber to the pin with the brakes released,珠寶, and again after a full brake application. The difference between the two measurements is the chamber stroke. Check the CVSA guidelines to determine the maximum allowable stroke, which is based on the chamber size and type.
If a wheel-end equipped with an automatic slack adjuster is out of adjustment, the first – and most important – piece of advice is this: Do not manually adjust the adjuster. There are many factors that can cause an automatic slack adjuster to overstroke,切貨, but none of these will be remedied with a manual readjustment.
Start by referring to the manufacturer’s instructions and mechanism tests to determine whether the slack adjuster is properly adjusting the brake. Also check the manufacturer’s recommendations for lubrication of the adjuster, noting the suggested mileage, frequency,LV包包, and lubricant grade. (Bendix recommends using an NGLI grade 2 lubricant at every preventive maintenance inspection,珠寶收購, which is approximately every three months or 30,000 miles.)
Once the automatic slack adjuster itself has been inspected, use the following checklist to examine other wheel-end components and fix any situations that can lead to overstroke. Where component replacement is necessary,團體服, use the OEM-equivalent equipment to ensure correct operation and peak performance.
Wheel-ends beyond the maximum allowable stroke are considered out of adjustment. Under CVSA inspection guidelines,韓國服飾, drivers can incur fines if 25% of a truck’s wheel-ends are out of adjustment.
Instead, investigate why the brake is over the stroke limit.
“During the (CVSA)-sponsored Roadcheck inspections in June, approximately 3,小禮服,700 vehicles in the United States and Canada were removed from service due to brakes out of adjustment,” said Mark Kromer, chief engineer, actuation/slack adjuster products, Bendix Spicer Foundation Brake LLC (BSFB). “It’s a stark illustration of the importance of including brake stroke measurement in any pre-trip wheel-end inspection.”
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