7. I NSPECTIONS A ND L UBRICATION Routine inspections, maintenance and service must be performed on your trailer on a regular basis to insure safe and reliable operation. Inspections can be performed by a person trained in spotting potential problems. Service and repairs must be performed by a trained, qualified technician. Note: In addition to this manual, also check the relevant component manufacturer's manual.
^ WARNING
Crushing hazard. Before performing trailer inspections, service or maintenance: • Park trailer on firm, level surface. • Set parking brakes, turn truck engine off and remove ignition key. • Chock tires if brakes are to be released. • Support trailer with properly rated and placed stands.
7.1 EVERY DAY Perform the inspections and checks before towing trailer. This list is also covered in the pre-trip inspection:
Check all lights for proper operation.
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• Check that ABS light on street side rear corner of the trailer is not illuminated. • Check that all safety decals are in place and in good, readable condition. • Check that all reflectors are in place and in good condition. • Check air pressure on all tires. Air pressure is listed on the Certification/VIN tag. • Check and inspect all tires. If a tire has a bald spot, bulge, cut or cords showing, replace the tire(s) before towing trailer. • Check wheel lug torque. See the Maintenance Section of this manual. • Check the wheel hubs for signs of lubricant leakage. • Check for broken or missing leaf springs or verify that air suspension springs are inflated. • Check electrical harness and air hoses from truck for damage. • Listen for air leaks in hoses and air suspension (if equipped). • Check brakes for wear and verify the brakes function properly. • Verify manholes are closed and safety latches fastened. • Verify all valves, except blow down valve, are closed. • Check relief valve for obstructions or damage. Repair or replace any worn, damaged, leaking, broken or non-functioning items before towing the trailer. Do not load a damaged trailer.
7.1.1
INSPECT TRAILER BODY, CHASSIS AND FASTENERS
1. Inspect the trailer body and chassis for damage daily. 2. Inspect all of the fasteners, welds and structural frame members for bending and other damage, cracks, or failure. Repair or replace any damaged fastener and repair the frame member. If you have any questions about the condition or method of repair of fasteners or frame members, get the recommendation of, or have the repair done by MAC Trailer. Contact MAC Trailer warranty department for a list of authorized repair facilities. Welds must be repaired by a qualified technician.
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