West Palm Beach · Palm Beach & Broward · South Florida
Fifth Wheel Repair
Mobile 24/7 service across South Florida. We come to you — I-95, Turnpike, job sites, fleet yards. No tow needed.
30–45 min
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The fifth wheel is the critical connection between your tractor and trailer. Albert's Road Service provides expert mobile fifth wheel inspection, adjustment, and repair.
Fifth Wheel Services
- Fifth wheel plate inspection and replacement
- Lock jaw mechanism repair and adjustment
- Kingpin inspection and measurement
- Fifth wheel lubrication and maintenance
- Mounting bracket and slider repair
- Release handle and air cylinder service
- Fifth wheel height adjustment
- Wear plate replacement
- Coupling alignment inspection
Safety First
A worn or damaged fifth wheel is a serious safety hazard and a common DOT violation. Regular inspection prevents accidents and keeps you compliant.
Fifth wheel issues? Call 561-475-8052 for mobile repair.
Know the Warning Signs
Symptoms That Mean You Need Fifth Wheel Repair
Excessive play or rocking
When you accelerate, brake, or turn and feel a noticeable clunk or rocking motion between the tractor and trailer, the fifth wheel has excessive wear. You'll feel it through the cab — a distinct jolt at every speed change and direction change that wasn't there before.
Difficulty coupling
If you have to fight to get the fifth wheel to latch onto the kingpin, the lock jaw mechanism is worn, misaligned, or partially seized. The jaws should snap closed cleanly and positively when the kingpin slides in during backing.
Difficulty uncoupling
A release handle that's stiff, won't pull, or won't stay in the release position indicates worn or corroded release mechanism components — the operating handle, return spring, or air cylinder on air-release models.
Grease loss or dry plate
If the top plate is dry and you see metal-on-metal contact marks (shiny wear patterns without grease), the coupling is running unlubricated. The kingpin and plate are wearing each other rapidly. In Florida's heat, grease breaks down and migrates away faster.
Visible plate wear
Deep grooves, ridges, or a noticeable depression around the throat opening on the top plate. When you run your hand across the plate and feel significant ridging, the wear has progressed beyond acceptable limits.
Trailer wander
The trailer tracks differently than it used to — swaying or wandering behind the tractor at highway speed on I-95. Excessive fifth wheel play allows the trailer to oscillate independently, creating an unstable combination.
Root Cause Analysis
Common Causes of Fifth Wheel Failure
Diesel engines are built for a million miles — but these conditions accelerate wear and cause premature failure.
Lack of lubrication
The number one cause of premature fifth wheel wear. The top plate and kingpin are a high-load bearing surface. Without grease, metal-to-metal contact accelerates wear exponentially. Florida's heat breaks down grease faster, requiring more frequent application.
Wrong grease type
Using general-purpose grease instead of a proper fifth wheel grease rated for high-load, high-temperature coupling applications. Fifth wheel grease needs to stay in place under thousands of pounds of tongue weight while the tractor and trailer pivot.
Kingpin wear
A worn kingpin allows excessive movement in the lock jaws, accelerating wear on the jaw mechanism, lock pins, and plate. Kingpin wear should be caught during annual DOT inspections — once it exceeds limits, the kingpin assembly on the trailer must be replaced or repaired.
Overloading
Running over legal tongue weight or gross combination weight puts excessive force through the fifth wheel coupling. The plate, mounting brackets, and slider mechanisms all suffer from chronic overloading.
Slider wear
On sliding fifth wheels, the slider mechanism (rails, locks, and air cylinders) wears over time. Worn slider locks can allow the fifth wheel to shift position unexpectedly — a serious safety hazard.
Mounting bracket fatigue
The brackets that attach the fifth wheel to the tractor frame experience tremendous cyclic loading. Cracks in mounting brackets, loose bolts, and fatigued welds are all failure points.
How We Work
Our Diagnostic Process
We don't guess at parts — we diagnose the root cause before turning a single wrench.
Uncoupled inspection
With the tractor uncoupled, we inspect the top plate surface for wear depth, ridging, and cracking. We operate the lock jaw mechanism manually to check for smooth operation and positive engagement.
Lock jaw measurement
We measure jaw-to-kingpin clearance using gauges. Excessive clearance means the jaws, lock pins, or both are worn beyond service limits.
Mounting hardware inspection
We check every mounting bolt for proper torque, inspect brackets for cracks or deformation, and examine slider rails and locks for wear and positive engagement.
Coupled inspection
With the trailer coupled, we check for movement between the tractor and trailer. A small amount of play is normal; excessive play indicates wear that needs to be addressed.
Kingpin inspection
We measure the trailer kingpin diameter and check for mushrooming, cracking, and wear patterns. A worn kingpin paired with a good fifth wheel will wear out the new components quickly.
Our Standards
Our Repair Approach
Wear plate replacement
When the top plate surface is worn but the base casting is sound, installing a new wear plate is the most cost-effective repair. This restores the bearing surface without replacing the entire fifth wheel.
Lock jaw rebuild
Worn jaws, lock pins, and springs can be replaced as a kit. This restores positive locking and proper kingpin engagement without a complete fifth wheel replacement.
Complete fifth wheel replacement
When the base casting is cracked, the mounting points are damaged, or overall wear is beyond rebuild limits, we install a new fifth wheel assembly. We verify frame mounting bolt patterns and alignment during installation.
Slider service
For sliding fifth wheels, we service the slider mechanism: lubricating rails, replacing worn lock pins, servicing air cylinders, and verifying positive lock engagement in all positions.
Proper lubrication
We apply the right fifth wheel grease in the correct amount and pattern. Over-greasing creates a mess; under-greasing causes wear. We apply grease to the plate and throat area where the kingpin makes contact.
☀️ South Florida Conditions
Florida-Specific Considerations
Running a diesel engine in South Florida is different from running one anywhere else. Year-round heat, humidity, and salt air create unique challenges our technicians are specifically trained for.
Heat breaks down grease
Florida's year-round high temperatures thin fifth wheel grease and cause it to run off the plate. A grease job that lasts 25,000 miles up north may only last 15,000 in West Palm Beach. More frequent lubrication is essential.
Salt air corrodes mechanisms
Trucks running coastal routes in Palm Beach County see corrosion on lock jaw mechanisms, release handles, slider pins, and mounting hardware. Corroded components bind and don't operate smoothly.
Sand contamination
Sand from coastal areas and construction zones mixes with grease on the fifth wheel plate, creating an abrasive compound that accelerates wear. The fifth wheel plate should be cleaned before re-greasing, not just greased over contaminated surfaces.
UV degrades rubber components
Air cylinder boots, release handle grips, and other rubber components on the fifth wheel deteriorate faster in Florida's intense UV exposure.
More Services
Related Services
DOT Inspections
Fifth wheel condition is a critical DOT inspection item
Preventive Maintenance
Regular greasing and inspection prevents fifth wheel wear
Suspension Repair
Suspension ride height affects fifth wheel coupling angle
Landing Gear Repair
Landing gear and fifth wheel work together during coupling
Fifth Wheel Brands We Service
We service all major fifth wheel manufacturers installed on Class 8 tractors running in South Florida:
- Holland — Holland FW35 and FW31 series are among the most common fifth wheels in the North American fleet. We service lock jaw mechanisms, top plates, bracket mounts, and slider systems on all Holland models.
- Fontaine — Fontaine 6000 and 7000 series fifth wheels are popular on linehaul tractors. We repair lock mechanisms, top plate wear, and no-tilt slide systems.
- JOST — JOST fifth wheels are standard on many European-brand tractors including Volvo and Mack. We service the JSK series including slider mechanisms and lock jaw rebuilds.
- SAF-Holland — Following the SAF-Holland merger, we service the combined product line including legacy SAF and Holland designs.
Kingpin Inspection and Wear Measurement
The trailer kingpin is the other half of the fifth wheel coupling equation. A worn kingpin is just as dangerous as a worn fifth wheel — and the two components wear together. During fifth wheel service, we measure kingpin diameter with a kingpin gauge to verify it's within specification. Standard 2-inch kingpins should measure no less than 1.843 inches in diameter at the wear point. Kingpins worn below this threshold must be replaced before the trailer returns to service.
We also inspect the kingpin for bending, cracks, and proper weld condition on the upper coupler assembly. A damaged or undersized kingpin can pull through the fifth wheel lock under load — a catastrophic failure that results in trailer separation. This is a leading cause of serious accidents involving tractor-trailers and is always inspected during DOT compliance checks.
A worn fifth wheel is a safety hazard and a DOT violation. Call Albert's Road Service at 561-475-8052 for expert fifth wheel repair anywhere in Palm Beach County.
Service Area
45-Mile Radius from West Palm Beach
We cover 3 counties and 24+ cities — if you're in South Florida, we come to you.
Palm Beach County
- West Palm Beach
- Jupiter
- Palm Beach Gardens
- Riviera Beach
- Lake Worth
- Boynton Beach
- Delray Beach
- Boca Raton
- Wellington
- Royal Palm Beach
- Greenacres
- Belle Glade
Broward County
- Fort Lauderdale
- Pompano Beach
- Deerfield Beach
- Coral Springs
- Margate
- Coconut Creek
- Lauderhill
St. Lucie County
- Port St. Lucie
- Fort Pierce
- Stuart
Fifth Wheel Repair problem? We fix it on-site.
Mobile 24/7 repair across Palm Beach, Broward & St. Lucie counties.
Request Fifth Wheel Repair
Fill out the form and we'll call you back fast. For emergencies, call 561-475-8052 directly.
Frequently Asked Questions
How do I know if my fifth wheel needs service?
How often should a fifth wheel be lubricated?
Can a worn fifth wheel be repaired or does it need replacement?
Is a worn fifth wheel a DOT violation?
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