1. Introduction and Overview
The Monroe Quick-Strut 171139 is a complete, ready-to-install strut and coil spring assembly designed to restore your vehicle's original ride height, handling, and control. This unit is engineered for a quicker, safer, and easier repair process, eliminating the need for a spring compressor. It is assembled in the USA from domestic and imported components, ensuring quality and performance.
Figure 1: Monroe Quick-Strut 171139 Suspension Strut and Coil Spring Assembly.
2. Key Features
- Complete Repair Solution: Includes a pre-assembled upper strut mount, coil spring, and strut in a single unit.
- Restores Ride Height: Application-specific coil spring engineered to restore original ride height and support vehicle weight.
- Enhanced Vehicle Control: Reduces body sway, vibration, and road harshness for improved handling.
- Improved Steering Precision: Premium upper strut mount ensures smooth, like-new steering and reduces noise, vibration, and harshness.
- Durable Construction: Manufactured with high-quality steel, featuring a superior tube and weld design for structural integrity and longevity.
- Corrosion Protection: Protective coating reduces rust, tested for resistance against environmental elements.
Figure 2: Optimized vehicle-specific design restores ride and handling.
3. Compatibility
This Monroe Quick-Strut assembly (Model 171139) is compatible with the following vehicle models:
- 2007-2013 Ford Expedition
- 2014-2017 Ford Expedition
- 2007-2013 Lincoln Navigator
- 2014-2017 Lincoln Navigator
Always verify compatibility using your vehicle's specific year, make, model, engine, and trim before purchase and installation.
4. Components Overview
The Monroe Quick-Strut assembly is a fully integrated unit comprising several key components working in harmony to provide optimal suspension performance.
Figure 3: Exploded view illustrating the various components of the Quick-Strut assembly.
- OE-Quality Strut Technology: The core damping unit, designed for consistent performance.
- OE-Style Coil Spring: Precisely calibrated to restore ride height and support the vehicle's weight.
- Upper Strut Mount: Pre-assembled for ease of installation, ensuring proper alignment and reducing noise.
- Robust Bearing Plate: Facilitates smooth steering and reduces friction.
- Jounce Bumper: Prevents harsh bottoming-out of the suspension.
- Dust Boot: Protects the strut rod from contaminants, extending its lifespan.
- Upper and Lower Spring Isolators: Reduce noise and vibration between the coil spring and other components.
- SAE-Grade Nuts & Bolts: High-quality fasteners included for secure installation.
5. Setup and Installation
Installation of the Monroe Quick-Strut assembly is designed to be straightforward, as it comes as a complete unit. However, suspension work requires specialized tools and knowledge. It is highly recommended that installation be performed by a qualified automotive technician.
General Installation Steps (Consult a professional for detailed instructions):
- Safety First: Ensure the vehicle is securely lifted and supported on jack stands on a level surface. Disconnect the battery if necessary.
- Remove Wheel: Remove the front wheel from the vehicle.
- Disconnect Components: Disconnect the brake line, ABS sensor wire, and sway bar link from the existing strut assembly.
- Remove Lower Strut Bolts: Loosen and remove the bolts connecting the bottom of the strut to the steering knuckle.
- Remove Upper Strut Nuts: Access the top of the strut mount under the hood and remove the nuts securing the assembly to the vehicle chassis.
- Remove Old Assembly: Carefully remove the old strut and coil spring assembly from the vehicle.
- Install New Assembly: Position the new Monroe Quick-Strut assembly into place, aligning the upper studs with the mounting holes. Secure with new nuts (provided).
- Secure Lower Strut: Connect the lower part of the strut to the steering knuckle using new bolts (provided) and torque to manufacturer specifications.
- Reconnect Components: Reconnect the brake line, ABS sensor wire, and sway bar link.
- Reinstall Wheel and Lower Vehicle: Reinstall the wheel and carefully lower the vehicle.
- Wheel Alignment: A professional wheel alignment is mandatory after replacing suspension components to ensure proper handling and tire wear.
Figure 4: Vehicle lifted for suspension component replacement.
Installation Video Resources:
For visual guidance, consider these informational videos from Monroe:
Monroe Quick Strut Product Overview
Video 1: An overview of the Monroe Quick-Strut product, highlighting its features and benefits for a complete repair.
Monroe Quick-Strut Assembly: Built for Durability
Video 2: Demonstrates the robust construction and durability features of the Monroe Quick-Strut assembly.
6. Operating Characteristics
The Monroe Quick-Strut assembly is designed to restore your vehicle's original operating characteristics, providing a balanced and comfortable ride while maintaining critical control. Key aspects include:
- Consistent Tire-to-Road Contact: Ensures optimal traction and braking performance.
- Reduced Body Roll and Sway: Improves stability during turns and evasive maneuvers.
- Minimized Brake Dive and Acceleration Squat: Maintains vehicle composure during braking and acceleration.
- Smooth Ride: Effectively absorbs impacts from road imperfections, reducing harshness transmitted to the cabin.
Figure 5: A vehicle demonstrating restored ride and handling with Monroe Quick-Strut assemblies.
7. Maintenance
Proper maintenance of your suspension system is crucial for safety, performance, and longevity. While Monroe Quick-Strut assemblies are built for durability, regular inspection is recommended.
- Regular Inspections: Have your suspension components, including struts, tires, and brakes, inspected by a qualified technician at least once a year or every 12,000 miles (20,000 km).
- Check for Wear: Look for signs of fluid leaks from the strut, excessive rust, damaged boots, or worn bushings.
- Wheel Alignment: Ensure proper wheel alignment is maintained. Misalignment can lead to uneven tire wear and compromised handling.
- Tire Rotation and Balance: Regular tire rotation and balancing can help extend the life of your tires and reduce strain on suspension components.
Figure 6: Example of a worn suspension component, highlighting the importance of regular inspection.
8. Troubleshooting
If you experience any of the following symptoms after installation or during normal operation, it may indicate an issue with your suspension system. Consult a qualified technician for diagnosis and repair.
| Symptom | Possible Cause |
|---|---|
| Excessive Bouncing or Rebound | Worn or damaged strut, improper installation. |
| Vehicle Sagging or Uneven Ride Height | Worn or broken coil spring, incorrect part application. |
| Clunking or Knocking Noises | Loose mounting hardware, worn bushings, damaged strut. |
| Poor Steering Response or Wandering | Worn strut mount, incorrect wheel alignment, other steering component issues. |
| Uneven Tire Wear | Incorrect wheel alignment, worn suspension components. |
9. Specifications
| Specification | Value |
|---|---|
| Brand | Monroe |
| Model Number | 171139 |
| Auto Part Position | Front |
| Vehicle Service Type | Car |
| Material | Alloy Steel |
| Exterior Finish | Smooth |
| Item Weight | 5 pounds |
| Product Dimensions | 27.3 x 8.2 x 8.5 inches |
| UPC | 048598113276 |
10. Warranty and Support
Monroe products are backed by a manufacturer's warranty. For specific warranty details, claims, or technical support, please refer to the documentation included with your product or visit the official Monroe Shocks & Struts website. Always retain your proof of purchase for warranty purposes.
For additional information and resources, you may visit the Monroe Store on Amazon.
