A dump trailer earns its money every time the bed goes up. It also takes more abuse than almost any other trailer: heavy, uneven loads, rough job sites, red clay, rain and a hydraulic system that works hard every day. A little routine maintenance keeps it lifting when the crew is waiting and keeps small problems from turning into expensive repairs.
Here is a practical dump trailer maintenance checklist. Your trailer's owner's manual and the hoist manufacturer's instructions come first, so use this as a framework and follow their intervals and fluid specs.
Before Every Use
- Walk around the trailer. Look for leaks under the hoist and pump, cracked welds, bent hinges and damage from the last load.
- Check tire pressure. Dump trailers carry heavy loads, and an underinflated tire heats up fast. Inflate to the pressure on the tire sidewall or the trailer's VIN sticker.
- Test the lights. Running lights, brake lights and turn signals, every time.
- Check the battery charge. Most dump trailer pumps run on a 12-volt battery on the trailer. A weak battery means a slow or stalled lift.
- Confirm the gate and latches. The rear gate, barn doors or spreader gate should open and latch properly.
- Look at the bed. Clean out leftover material so it does not add weight or trap moisture.
Hydraulic System Care
The hydraulic system is the heart of a dump trailer, and most lifting problems start here.
Check the Fluid
Check the reservoir level with the bed fully lowered, following the pump manufacturer's instructions. Use only the type of hydraulic fluid the manual calls for. Mixing fluids or using the wrong one can damage seals and slow the lift.
Watch for Leaks and Wear
- Inspect hoses and fittings for cracks, bulges, weeping and rubbing spots
- Look for wet spots or drips under the cylinder and pump
- Check the cylinder for scoring, dents and leaking seals
- Listen to the pump; a change in sound can mean low fluid or air in the system
Change the Fluid
Hydraulic fluid breaks down and picks up moisture over time, especially in Georgia's humidity. Change it on the schedule your manual gives, and sooner if it looks milky or dark.
Battery and Charging
A dump trailer battery works hard and often sits between jobs. Keep the terminals clean and tight, keep the battery charged with a charger or your truck's charge line if it is wired for it, and check its age. Many owners replace it before it fails rather than finding out on a job site.
Pivot Points and Hoist Grease
The bed hinges and the hoist pivot points take a lot of stress every time you dump. Grease every fitting at the intervals in your manual, and more often if you work in mud, sand or wet conditions. If your trailer uses a scissor hoist, its arms and pins have grease points too. A telescopic hoist has its own top and bottom mounts to check.
When you raise the bed for maintenance, always use the safety prop or bed lock. Never work under a raised bed held up only by hydraulics.
Tires, Wheels and Bearings
- Lug nuts: check torque regularly, and always after a tire change.
- Tread and sidewalls: look for cuts, bulges, uneven wear and dry rot, especially on a trailer that sits outside.
- Wheel bearings: heavy loads wear bearings faster. Inspect, clean and repack them on schedule, and feel the hubs after a trip; one hub hotter than the others is a warning sign.
Brakes and Breakaway System
A loaded dump trailer is heavy, and its brakes do a lot of the stopping. Check that the brakes respond to your controller, inspect brake wiring for damage and test the breakaway switch and battery. Georgia DPS lists trailers without required brakes, lights and reflectors among the commonly violated regulations for business vehicles in its motor carrier FAQ, so keeping these systems in shape protects your crew and your schedule.
Frame, Floor and Gate
- Inspect welds on the frame, bed and tongue for cracks
- Check the floor for thin spots or rust-through, especially where material sits
- Touch up chips and scratches in the paint to slow rust
- Lubricate gate hinges and latches
- Check the tarp kit for tears and loose mounts
Quick Maintenance Schedule
| When | What to Do |
|---|---|
| Every use | Walk-around, tires, lights, battery charge, gate and latches |
| Monthly or by your manual | Grease pivot points and hoist, check hydraulic fluid and hoses, lug nut torque |
| Every few months | Brake and breakaway check, frame and weld inspection, tarp kit |
| Yearly or by your manual | Wheel bearing service, hydraulic fluid change, full shop inspection |
Operate It the Way It Was Designed
Good habits at the dump site prevent a lot of repairs. Dump on level ground, raise the bed slowly, keep the load spread evenly and stay within the trailer's GVWR. Our guide to the safe operation of dump trailers covers those habits in more detail.
Let Our Shop Handle the Heavy Work
Some jobs are easier with a lift and the right tools. Our trailer repair shop in Jonesboro services dump trailers, including wheel bearings, brakes, axles, wiring and a free multi-point inspection. Our parts counter stocks common trailer parts, and when it is time to replace an older unit, browse our dump trailers for sale.
Come see us at 8834 Tara Blvd, Jonesboro, GA 30236, just south of Atlanta. We are open Monday to Friday 9 AM to 5 PM and Saturday 9 AM to 4 PM. Call (770) 603-8511 or text (404) 383-8194 and tell us what you need to haul.
Frequently Asked Questions
How often should I change the hydraulic fluid in my dump trailer?
Follow the schedule in your pump or hoist manual. Change it sooner if the fluid looks milky, dark or contaminated, since moisture and heat break it down over time.
Why is my dump trailer lifting slowly?
Common causes include a weak battery, low hydraulic fluid, air in the system, a worn pump or an overloaded bed. Start by checking the battery charge and fluid level, then have a shop inspect the hydraulics.
Where do I grease a dump trailer?
Grease the bed hinge pivots and the hoist pivot points, plus any fittings on scissor arms or cylinder mounts. Your manual lists every fitting and how often to grease it.
How often should dump trailer wheel bearings be serviced?
Follow your trailer's manual. Heavy loads wear bearings faster, so inspect them regularly and have them cleaned and repacked on schedule.
Can A&A service my dump trailer?
Yes. Our Jonesboro shop services dump trailers, including bearings, brakes, axles and wiring, and offers a free multi-point inspection. Call (770) 603-8511.