Drivers should always consult the manufacturer’s instructions to ensure that they are providing proper vehicle care. The above represents only the general guidelines a drive must follow to perform proper trailer maintenance. Then, prior to pulling away, the driver should release the suspension air to reduce the forces acting on the trailer. When the driver has aligned the cab properly and he or she is ready to drop the trailer, he or she should crank the landing gear so that it is close to the ground. Drop the trailer with care – Drivers should use the truck’s air suspension when connecting the truck cab to the semi-trailer.Finally, a high-quality grease should be used to lubricate the top plate. The bracket pins must be lubricated on both sides. The bracket pins should be lubricated with the assistance of another through use of a grease gun. Ensure the component parts are properly lubricated – The locking mechanism and the jaw of the truck should be greased with a light oil or silicone-based lubricant.If there is damage to the kingpin, it should be replaced. Inspection of brackets and pins – A kingpin gauge should be used to check for wear and tear.Regardless of manufacturer, a test pin is the proper tool to test the lock. The driver should be familiar with the manufacturer’s recommended procedures to adjust the lock. A damaged locking mechanism increases the likelihood of a trailer rollaway. Ensure that the locking mechanism is in working order, then adjust and test it – The driver should ensure that the locking mechanism has not worn down or been damage.Cracks in the trailer often allows grease to leak creating environmental and safety issues. Inspection of fifth wheel plate – The driver should ensure that the plate is flat, it has not warped, and that it has not cracked.In practice, many trucking companies do not perform the steam cleaning since they prefer to scrape off the debris or to use solvents to break down the remaining dirt and grease. Ensure the fifth wheel is clean - Many manufacturers suggest a regular steam cleaning of the fifth wheel.Steps essential to proper kingpin and fifth-wheel use and maintenance include: When a driver does not follow the steps to properly secure a trailer, the risk for a serious accident or injury due to a run-away trailer increases significantly. Unfortunately, the stresses and responsibilities of the road can cause these duties to be neglected or performed improperly. I know this is a 93 year model with air leaf suspension and isnt going to ride as smooth as the newer style suspension but it seems like it should ride a little smoother. The maintenance of a commercial truck often falls into a commercial driver’s hands. My 1993 Peterbilt 379 EXHD has always rode rough. Truck Drivers Must Perform Significant Maintenance on the Fifth Wheel & Kingpin, but Some May Neglect These Duties Due to the large size and significant weight of truck trailers, these accidents often produce catastrophic injuries or even death. This runaway trailer can strike other vehicles traveling along the highway or roadway. However when a truck kingpins fails, the coupling mechanism will also fail resulting in a runaway truck trailer. This kingpin then moves against the greased fifth wheel providing stability and securement for the semi-trailer. Despite its name, the 5 th wheel is a horseshoe-shaped coupling device while the kingpin is a, roughly, 2 inch to 3.5 diameter inch steel pin that is inserted into the center of the fifth wheel. We are a Canadian company that is privately owned with locations across Canada.A tractor-trailer fifth wheel along with a kingpin provides the coupling link between the truck cab and the semi-trailer it will be hauling.In addition to our online parts store, we have 17 brick-and-mortar retail locations across Canada so you can be confident when you buy from Maxim Truck & Trailer.Shipments arrive at your door within 3-5 business days via Canada Post Expedited Parcel Service.We usually fulfill orders within 12 hours from the business day they are ordered. Free shipping to your door on orders over $100.Order your truck parts 24 hours a day 7 days a week.We carry an extensive inventory of over $15 million in parts for heavy-duty truck applications.
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