Quick Facts

  • Manufacturer: SAF-Holland
  • Brand: Holland
  • Product Model: FWAL
  • Product Type: Lightweight aluminum commercial fifth wheel
  • Coupling Type: Semitrailer kingpin coupling
  • Configuration: Stationary or sliding, depending on mounting system
  • Top-Plate Construction: Forged and machined aluminum
  • Top-Plate Surface: Replaceable LowLube inserts
  • Maximum Vertical Load: 55,000 pounds
  • Maximum Drawbar Pull: 150,000 pounds
  • Kingpin Compatibility: Standard 2-inch kingpin
  • Locking Design: Swing-lock mechanism
  • Release Type: Manual or optional air release
  • Primary Applications: Line-haul and weight-sensitive highway tractors
  • Production Status: Current product family

Overview

The Holland FWAL is a lightweight standard-duty commercial fifth wheel built around a forged and machined aluminum top plate. It is designed to reduce tractor weight while maintaining the load and drawbar-pull ratings required for common highway semitrailer applications.

The FWAL combines aluminum construction with replaceable LowLube top-plate inserts, NoLube articulation-pocket liners, and a swing-lock kingpin-retention mechanism. This combination reduces fifth-wheel weight and eliminates the conventional requirement to grease the top-plate surface.

Stationary and sliding mounting configurations are available. Compatible assemblies may also include an optional air-operated release mechanism.

Key Characteristics

  • Forged and machined aluminum top plate
  • Lightweight standard-duty design
  • Replaceable LowLube top-plate inserts
  • NoLube articulation-pocket liners
  • Swing-lock kingpin-retention mechanism
  • Replaceable locking and wear components
  • Stationary and sliding mounting options
  • Optional air-operated release
  • Designed for a standard 2-inch kingpin
  • Intended for standard-duty highway applications

Major Components

  • Forged aluminum top plate
  • Replaceable LowLube plates
  • LowLube plate fasteners
  • Fifth-wheel throat
  • Rear locking jaw
  • Front lock component
  • Release handle and linkage
  • Lock-adjustment mechanism
  • Pivot pins
  • NoLube articulation-pocket liners
  • Mounting brackets
  • Slider rails and locking plungers when equipped
  • Air-release actuator and lines when equipped
  • Mounting fasteners and frame attachments

Coupling Type and Design

The FWAL is a tractor-mounted fifth wheel designed to connect with a standard 2-inch semitrailer kingpin. Its aluminum top plate supports the trailer upper coupler while the steel locking components retain the kingpin.

The swing-lock design captures the kingpin between its locking components. Replaceable LowLube inserts provide the primary contact surface between the fifth wheel and trailer without requiring conventional top-plate grease.

How the Coupling System Works

As the tractor backs beneath the trailer, the kingpin enters the fifth-wheel throat and activates the locking mechanism. The swing lock closes around the kingpin and retains it in the coupling position.

Once coupled, the FWAL supports part of the trailer’s vertical load and transfers pulling, braking, and cornering forces between the tractor and trailer. The top plate pivots through its mounting brackets to accommodate normal road movement.

The LowLube plates allow the trailer upper coupler to move across the fifth-wheel surface without a conventional grease layer.

Position and Function Within the Vehicle

The FWAL is mounted above the tractor frame near the drive-axle group. Its exact location affects tractor-to-trailer clearance and weight distribution between the steer and drive axles.

The fifth wheel supports the trailer, secures the kingpin, permits articulation, and transfers towing and braking forces into the tractor frame. Its lightweight design can reduce tractor tare weight compared with heavier fifth-wheel assemblies.

Common Specifications

  • Maximum Vertical Load: 55,000 pounds
  • Maximum Drawbar Pull: 150,000 pounds
  • Kingpin Size: 2 inches
  • Top Plate: Forged and machined aluminum
  • Top-Plate Surface: Replaceable LowLube inserts
  • Articulation Pockets: NoLube liners
  • Locking Design: Swing lock
  • Release: Manual or optional air release
  • Mounting: Stationary or sliding
  • Primary Duty Class: Standard-duty highway service

Fifth-wheel height, slider travel, mounting style, frame-width code, and complete assembly weight vary by configuration. The complete FWAL assembly number should be used when confirming specifications.

Load Ratings and Operating Capacity

The FWAL is rated for a maximum vertical load of 55,000 pounds and maximum drawbar pull of 150,000 pounds. These ratings depend on correct installation, approved mounting equipment, proper maintenance, and operation within a suitable standard-duty application.

The fifth-wheel rating does not automatically establish the tractor’s allowable gross vehicle or gross combination weight. Frame, mounting system, axles, suspension, tires, wheels, brakes, and trailer equipment must remain within their respective ratings.

Articulation and Oscillation

The FWAL pivots forward and rearward through its mounting brackets to accommodate normal road grades and tractor-trailer movement. NoLube articulation-pocket liners allow this movement without conventional grease between the top plate and brackets.

The FWAL is not a fully oscillating severe-duty fifth wheel. Applications requiring extensive side-to-side movement or severe off-highway articulation may require a different fifth wheel and mounting arrangement.

Sliding and Adjustment System

Sliding FWAL installations allow the coupling position to move forward or rearward along frame-mounted rails. Repositioning the fifth wheel can adjust axle-weight distribution and tractor-to-trailer clearance.

Compatible Holland ILS slider systems may provide multiple mounting heights, different travel lengths, and air-operated slide release. Both locking plungers must be completely engaged before road operation.

This section does not apply to stationary FWAL installations.

Release and Locking Mechanism

The FWAL uses a swing-lock mechanism to capture and retain the kingpin. Steel locking components are used in the kingpin-contact area while the main top plate is constructed from aluminum.

Standard configurations use a manual release handle. Compatible FWAL assemblies may include an optional pneumatic release that allows the lock to be opened through an in-cab control.

Air and Electronic Controls

A standard manual-release FWAL does not require air or electronic controls. Optional air release uses the tractor’s compressed-air system, a control valve, air lines, and a pneumatic actuator to open the fifth-wheel lock.

Sliding mounting systems may also use air-operated locking plungers. Drivers must follow the operating requirements for the exact release and slider system.

Mounting and Installation

The FWAL may be installed using approved stationary or sliding mounting assemblies. Installation must account for frame width, mounting height, bracket design, fastener requirements, axle clearance, suspension movement, and tractor-to-trailer clearance.

The aluminum top plate should not be drilled, welded, heated, straightened, or modified outside approved procedures. Mounting and frame work must follow the instructions for the exact FWAL assembly.

Vehicle Frame and Mounting Compatibility

Compatibility depends on the tractor manufacturer, model, frame width, rail dimensions, crossmembers, drive-axle position, suspension travel, fifth-wheel height, slider travel, and intended trailer.

The complete assembly—including the top plate, mounting brackets, slider, fasteners, and tractor frame—must support the required load and operating conditions.

Mating Component and Trailer Compatibility

The FWAL is designed for a properly installed and serviceable SAE-compatible 2-inch trailer kingpin. The trailer upper-coupler plate must be flat, structurally sound, clean, and compatible with the LowLube inserts.

Bent, worn, improperly sized, or loosely mounted kingpins can prevent correct coupling. Upper-coupler damage, added aftermarket lube plates, contamination, and incorrect trailer height can also interfere with operation.

Common Applications

  • Long-haul highway tractors
  • Regional-haul tractors
  • Day-cab tractors
  • Weight-sensitive fleet tractors
  • Dry-van trailers
  • Refrigerated trailers
  • Standard flatbed trailers
  • General freight operations
  • Payload-focused tractor configurations

Advantages

  • Substantial weight reduction compared with many steel fifth wheels
  • Forged and machined aluminum top plate
  • 55,000-pound maximum vertical-load rating
  • Replaceable LowLube top-plate inserts
  • Eliminates top-plate grease
  • NoLube articulation-pocket liners
  • Replaceable locking and wear components
  • Stationary and sliding mounting options
  • Optional air release
  • Can help increase available payload when vehicle ratings permit

Limitations or Considerations

  • Intended primarily for standard-duty highway applications
  • Not a replacement for a severe-duty cast-steel fifth wheel
  • Aluminum top plate requires correct inspection and repair procedures
  • LowLube inserts require inspection and eventual replacement
  • The locking mechanism still requires lubrication
  • Incorrect trailer height can cause high coupling
  • Slider systems add weight and maintenance points
  • The fifth-wheel rating does not override other vehicle ratings

Driver and Operator Experience

The LowLube surface keeps the top plate cleaner than a conventionally greased fifth wheel. This can reduce grease transfer onto clothing, tools, equipment, and nearby tractor components.

The lighter assembly may support payload and tare-weight goals, but coupling procedures remain unchanged. Drivers must visually inspect the lock, perform a tug test, and verify complete slider engagement when applicable.

Coupling and Uncoupling Procedure

Before coupling, inspect the FWAL top plate, LowLube inserts, locking mechanism, mounting system, trailer kingpin, upper coupler, slider locks, and optional air-release components.

  1. Confirm that the coupling area is level and clear.
  2. Verify that the lock is ready to accept the kingpin.
  3. Align the tractor with the trailer.
  4. Confirm that the trailer is at the correct coupling height.
  5. Back under the trailer slowly and in a straight line.
  6. Complete the coupling and set the parking brakes.
  7. Visually inspect the locking mechanism around the kingpin.
  8. Confirm that the release handle is in the locked position.
  9. Perform a tug test.
  10. Connect the air and electrical lines and complete a final walk-around.

This overview does not replace SAF-Holland instructions, fleet safety procedures, or required driver training.

Inspection and Wear Points

  • Aluminum top-plate casting
  • LowLube inserts and fasteners
  • Rear locking jaw
  • Front lock component
  • Kingpin-contact surfaces
  • Fifth-wheel throat
  • Release handle and linkage
  • Lock-adjustment components
  • Pivot pins and NoLube liners
  • Mounting brackets and fasteners
  • Slider rails and locking plungers
  • Air lines and release actuator
  • Trailer kingpin and upper coupler

Lubrication Requirements

The FWAL LowLube inserts eliminate the need to grease the top-plate surface. NoLube articulation-pocket liners also reduce lubrication requirements between the top plate and mounting brackets.

The kingpin-locking mechanism and other specified service points still require lubrication. LowLube does not mean that the entire fifth-wheel assembly is maintenance-free.

Maintenance and Ownership Notes

Routine maintenance should include cleaning, lock lubrication, lock adjustment, LowLube insert inspection, aluminum top-plate inspection, mounting-fastener checks, and slider inspection when equipped.

Damaged LowLube inserts should be replaced using the correct service components. Cracked, distorted, gouged, or otherwise damaged aluminum top plates require evaluation according to SAF-Holland procedures.

Common Coupling Problems

  • High coupling: The kingpin enters above the locking mechanism because the trailer is positioned too high.
  • Failure to lock: Improper alignment, contamination, damaged parts, incorrect kingpin dimensions, or lock maladjustment can prevent engagement.
  • Difficult release: Tractor-to-trailer pressure, insufficient lock lubrication, damaged linkage, or mechanical binding may prevent release.
  • Excessive kingpin play: Worn locking components, kingpin wear, or incorrect adjustment can create excessive movement.
  • Damaged LowLube inserts: Wear, loose fasteners, debris, impact damage, or a defective trailer upper coupler can damage the inserts.
  • Aluminum top-plate damage: Improper coupling, impact loading, overloading, or unapproved repair procedures can damage the top plate.
  • Slider problems: Debris, low air pressure, damaged rails, binding, or misalignment can prevent adjustment or plunger engagement.

Safety and Service Precautions

Never place any part of the body between an unsecured tractor and trailer. Set the parking brakes, chock the trailer wheels, and follow approved support and lockout procedures before inspection or service.

Do not weld, heat, straighten, drill, grind, or otherwise modify the aluminum top plate unless an approved SAF-Holland procedure specifically permits the work.

Never operate the vehicle without visually confirming complete kingpin engagement and performing a tug test.

Identification Information

Record the following information before ordering service parts or a complete assembly:

  • Complete FWAL assembly number
  • Top-plate model number
  • Serial or production information
  • Manual or air-release configuration
  • Stationary or sliding mounting
  • Nominal fifth-wheel height
  • Slider travel
  • Frame-width and mounting codes
  • LowLube insert kit number
  • Locking and rebuild-kit identification

Buying Considerations

  • Confirm that the application qualifies as standard duty.
  • Determine the desired tractor-weight reduction.
  • Confirm the required vertical-load and drawbar-pull ratings.
  • Choose between stationary and sliding mounting.
  • Determine the required fifth-wheel height and slider travel.
  • Verify tractor-frame and mounting compatibility.
  • Select manual or optional air release.
  • Confirm trailer upper-coupler compatibility with LowLube inserts.
  • Check replacement-insert and service-part availability.
  • Compare purchase cost with expected payload and maintenance benefits.

Variants and Configurations

  • Stationary FWAL
  • Sliding FWAL
  • Manual-release configuration
  • Air-release configuration
  • Inboard mounting
  • Outboard mounting
  • Holland ILS mounting configurations
  • Different fifth-wheel heights
  • Different slider-travel lengths

Comparison to Similar Equipment

Compared with the Holland FW17 Lightweight Fifth Wheel, the FWAL uses a forged aluminum top plate and LowLube inserts to provide additional weight and maintenance benefits.

Compared with the Holland FW33 Low-Lube Fifth Wheel, the FWAL uses an aluminum top plate rather than the FW33’s cast-steel structure.

Compared with the Holland FW35 Fifth Wheel, the FWAL prioritizes lower weight and standard-duty highway operation rather than broad vocational versatility.

Best Fit For

  • Weight-sensitive highway fleets
  • Payload-focused operations
  • Long-haul tractors
  • Regional-haul tractors
  • Day-cab tractors
  • Fleets seeking reduced top-plate lubrication
  • Standard-duty applications using 2-inch kingpins
  • Vehicles requiring stationary or sliding mounting

Related Vehicle and Trailer Types

Related Truck and Trailer Models

Related Coupling Types

Related Coupling Products

Related Equipment Systems

Related Guides

Regulatory and Compliance Notes

Installation and operation must comply with applicable commercial-vehicle regulations, inspection requirements, vehicle-manufacturer instructions, and coupling-equipment standards.

The fifth wheel, mounting system, tractor frame, trailer kingpin, upper coupler, suspension, axles, tires, wheels, and brakes must remain within their individual ratings. Reduced equipment weight does not increase certified vehicle ratings.

Real World Operating Notes

The FWAL is most beneficial when reducing tractor tare weight can improve payload flexibility or help offset the weight of other equipment.

The aluminum construction should not be treated like a conventional steel top plate during repair. Cracks, distortion, gouging, or suspected structural damage require proper evaluation.

LowLube inserts reduce grease use, but the locking mechanism still requires inspection and lubrication. Correct trailer height remains essential for safe coupling.

Frequently Asked Questions

What is the Holland FWAL?

The FWAL is a lightweight standard-duty fifth wheel built around a forged and machined aluminum top plate.

What is the FWAL vertical-load rating?

The FWAL is rated for a maximum vertical load of 55,000 pounds.

What is its maximum drawbar pull?

The maximum drawbar-pull rating is 150,000 pounds.

What kingpin size does the FWAL use?

It is designed for a standard 2-inch semitrailer kingpin.

Does the FWAL require top-plate grease?

No. Replaceable LowLube inserts eliminate the conventional requirement to grease the top-plate surface.

Is the entire FWAL lubrication-free?

No. The kingpin-locking mechanism and other specified service points still require lubrication.

Is the FWAL available with a slider?

Yes. Stationary and sliding mounting configurations are available.

Can the FWAL use an air release?

Yes. Optional air-operated release equipment is available for compatible configurations.

Can a damaged aluminum top plate be welded?

It should not be welded, heated, straightened, or otherwise modified unless an approved SAF-Holland repair procedure specifically permits the work.

How can the correct replacement parts be identified?

Use the complete assembly number, top-plate number, mounting type, release configuration, fifth-wheel height, slider travel, and production information.

Availability and Where to Find

The Holland FWAL and its replacement components may be available through SAF-Holland dealers, commercial-truck dealers, heavy-duty parts suppliers, fleet-maintenance suppliers, fifth-wheel specialists, and truck repair facilities.

Availability depends on mounting style, fifth-wheel height, slider travel, frame width, release configuration, and production series. Verify the complete FWAL model number before ordering.

Current product information, technical literature, and support resources are available through the official Holland Fifth Wheels website.

Support Trucking Families

Truck Equipment Atlas supports the mission of Grey Cross, a nonprofit dedicated to helping families of truck drivers who lose their lives while on the road. As the site grows, part of its mission is to bring awareness and support to these families.

Podcast or Video Section

Learn More Through Audio and Video

Truck Equipment Atlas will continue expanding with podcast episodes, interviews, and equipment breakdowns to help drivers and fleets better understand trucks and equipment.

Follow the Growth of Truck Equipment Atlas

Truck Equipment Atlas continues to expand with new truck profiles, trailer coverage, diesel engine pages, equipment system resources, manufacturer information, and educational guides.

Visit our Site Updates page to explore recent additions, project milestones, and upcoming resources as we continue building one of the industry’s growing commercial trucking equipment reference libraries.

View the Latest Site Updates: Truck Equipment Atlas Site Updates

Scroll to Top