8 Tips for Semi-Trailer Maintenance Oct,10 2017

1. Check the air


Tires are a major expense, so they deserve your attention.


a.Verify that the system pressure is set correctly


b.Check the auxiliary battery switch (ABS)/auxiliary power fuse


c.Check the system shut-off valve position



2. Inspect suspensions


Visually inspect suspensions of the semi-trailer looking for signs of irregular wear, tears or heat cracks on the air springs.Make sure nothing is touching the suspension or interfering with its movement. Also make sure air springs have sufficient and equal pressure


3. Lube it correctly


Make sure you add enough new grease to purge the old grease.It’s not that the old grease wears out, but the debris that cling to the grease make it ineffective. Adding new greases purges the dirt.



4. Take time for brakes


On wheel ends with spring brakes applied, look at the angle formed by the air chamber push rod and slack adjuster. That angle should be 90 degrees. If it isn’t, the brake is out of adjustment and needs to be fixed


5. Keep it clean


A clean trailer also allows you to more easily spot trailer problems.


6. Don’t forget the inside


Holes in the roof can cause leaks which could damage cargo,as well as letting potentially damaging moisture into the trailer.


7. Check security


Your trailer maintenance must include a close inspection of tiedown straps, chains, ratchets and winches. Look for holes, tears, cuts, snags, loose stitching or embedded particles in the straps and at securing hardware, including loose logistics tracks on the inside of the trailer or rusted winches and hooks on the outside


8. Prioritize prevention


Look for little symptoms that if fixed prevent big damage.If it moves, slides or goes up and down, it needs to be inspected on a regular basis.


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