Trailer coupler, hitch and jack repair covers every part that connects a trailer to your truck or holds it up once unhitched: the coupler and latch, hitch ball and mount, safety chains, breakaway cable, tongue jacks and landing gear. Keep Them Rolling Trailer Repair fixes them where the trailer sits, across Morris, Sussex, Warren and Hunterdon counties. Call Brad Smith, the owner, at (973) 651-1045.
The connection that carries everything
Every pound of braking and acceleration between truck and trailer passes through a few inches of steel at the front of the tongue. A coupler with too much play hammers the ball every time you start or stop. A latch that doesn’t close all the way can lift off the ball over a bump. Chains that drag, hooks with no retainers or a breakaway cable clipped to the wrong place won’t do their job on the one day they’re needed.
Most of these problems announce themselves. A clunk from behind when you pull away, a coupler you have to force shut, rust bleeding from the latch or a tongue that sits crooked when hitched are all worth a call before the next tow.
Couplers
The coupler is the socket on the front of the tongue that clamps over the hitch ball. Most trailers use a ball coupler, either an A-frame style bolted between the two rails of a V-shaped tongue or a straight-tongue style for a single channel. Heavier trailers may use a gooseneck coupler that drops over a ball in the truck bed, or a lunette ring that hooks into a pintle hitch. Each wears differently: ball couplers in the socket and latch, pintle setups at the ring and hook.
Brad adjusts, repairs or replaces couplers to get the connection tight again, and any replacement is rated for the trailer’s gross weight. Latch repair, fit on the ball, bolt-on versus weld-on couplers and hitch adjustments are all covered on the trailer coupler repair and replacement page.
Hitch balls, mounts and level towing
The truck side of the connection wears too. Balls develop flat spots and shrink below their stamped size, ball mounts rust at the pin hole, and receivers get loose and rattly. A trailer that sits nose-up or nose-down when hitched shifts weight between its axles and the truck’s, which changes how it tracks and brakes. Replacing a worn ball and setting the right drop or rise on the ball mount are handled alongside coupler work.
Safety chains and breakaway cables
Safety chains are the backup if the coupler ever lets go. They should cross under the tongue in an X so they can cradle it, hang with enough slack for tight turns without dragging on the road, and attach with hooks that have latches or retainers. Stretched links, worn hooks, weak attachment points and chains too light for the trailer all get replaced.
A trailer with electric brakes also has a breakaway switch near the tongue, wired to its own small battery. A cable runs from the switch pin to the truck, and if the trailer ever separates, the pin pulls out and the battery sets the brakes. That cable belongs on the truck, not on the chains or the ball mount, and the battery has to hold a charge. Brad checks both during any towing component job.
Tongue jacks and landing gear
A tongue jack that won’t crank, won’t hold or won’t retract makes every hitch-up a fight. Brad repairs and replaces top-wind, side-wind, swivel and electric tongue jacks, and services landing gear on semi trailers. See trailer jack repair and replacement for what goes wrong inside a jack and when a repair beats a new one.
Related work
The coupler and jack both bolt or weld to the tongue, so a cracked or rusted tongue often turns up during this work. That falls under trailer welding and structural repair. The breakaway switch and the plug at the tongue belong to the trailer’s wiring, covered under trailer electrical and lighting repair. The complete list sits on our trailer repair services page.
Brad works on bumper-pull, gooseneck and pintle trailers at homes, yards and job sites across Sussex County and the rest of his four-county area, every day from 7 AM to 7 PM. Request coupler or hitch service online, or phone him to talk it through.
Common questions
How do I know if my trailer coupler is worn out?
Listen and look. A clunk when you start, stop or cross bumps means there is play between the coupler and ball. With the trailer hitched, rock the tongue up and down; noticeable movement on the ball points to a worn socket, a worn ball clamp or a worn ball. Other signs are a latch that won’t close fully or needs force, a broken latch spring, heavy rust around the mechanism, and any crack in the coupler body or around its bolts or welds.
What size ball does my coupler need?
Look on top of the coupler. Couplers are stamped with the ball size they are made for, along with their weight rating. The common sizes are 1-7/8 inch, 2 inch and 2-5/16 inch. The ball has its size stamped on top too, and the two must match exactly. A 2-inch coupler can sometimes close over a 1-7/8 inch ball and then pop off on the road. If the stamping has worn away, measure the ball’s diameter.
Why won’t my trailer jack crank?
Usually it’s dry or rusted inside, has a stripped gear, or has a bent inner tube. Jacks that sit outside through winter collect water that rusts the screw, which makes them stiff and eventually seizes them. A jack that was side-loaded, dropped or left down while the trailer moved can bend so it binds partway through its travel. Electric jacks also stop from a flat battery, corroded wiring or a bad switch. Grease sometimes frees a stiff jack; stripped or bent ones get replaced.