By Denise Rondini
As a part of most routine maintenance inspections, the tractor’s suspension system is examined to make sure it is in good working order. Unfortunately, that same level of attention is not always paid to the trailer suspension. According to ArvinMeritor, trailers and trailer components are not maintenance-free. Like most every component or system, trailer suspensions need to be checked and maintained on a regular basis in order to ensure proper function.
Taking a systematic approach to trailer suspension maintenance can help ensure that your customer’s vehicle won’t be placed out of service following a Department of Transportation roadside inspection.
One of the first things you will want to do is look at the trailer to make sure it is level. Check to ensure that all welds are of good quality, all bolts are in place and secure, the pivot connection is secured properly and that there is no component interference, according to Hendrickson.
Remind your customers to check clearance around air springs, tires, shock absorbers and other moving parts every 30 days. They also should make sure bolts are secure and axle connections are tight. In addition, they should be on the lookout for any signs of wear. You also should perform these inspections whenever the trailer is in your shop for service.
At 90 days, in addition to what is inspected at the 30-day interval, look at welded connections for signs of deterioration, and check frame attachment joints, cross member structures and all pivoting and clamping connections.
ArvinMeritor recommends the following be performed annually:
