The MORryde AllTrek 4000™ Suspension System is an aftermarket upgrade designed to enhance the towing experience for 5th wheel and travel trailers by replacing standard steel equalizers with a shock-absorbing rubber compression spring system. This system is engineered to work in concert with the existing steel leaf spring suspension, improving overall suspension performance and providing a smoother, more comfortable tow.
Function Description:
At its core, the AllTrek 4000™ system utilizes MORryde's proprietary rubber springs, which have been a staple in the recreational vehicle market for over 50 years. These rubber springs are strategically placed between the axles, replacing the traditional steel equalizer. The primary function of the rubber equalizer is to isolate and absorb road shock, thereby reducing the impact of rough roads on the trailer and its contents. This design also increases the trailer's overall dynamic axle travel, allowing the suspension to articulate more effectively over uneven terrain. The system is specifically engineered to integrate seamlessly with the trailer's leaf springs, creating a comprehensive suspension solution that significantly improves ride quality.
Important Technical Specifications:
- Suspension Travel: The AllTrek 4000™ system provides up to 4 inches of total suspension travel. This increased travel allows the axles to move more independently, absorbing bumps and dips more effectively than a standard steel equalizer system.
- Rubber Content: The system boasts over 40% more rubber than the MORryde CRE3000™ system, indicating a greater capacity for shock absorption and vibration dampening.
- Equalizer Types: The system offers replacement equalizers for both tandem and triple axle configurations.
- Tandem Replacement: Includes complete 33" and 35" wheel base equalizer replacements (Part Numbers TG2-33-SINGLE and TG2-35-SINGLE).
- Triple Aftermarket Replacement: This configuration is more complex, involving multiple equalizers, torque arms, cross members, and shackle links. It includes specific components for 33" and 35" wheel base torque arms (TG30-033, TG30-035), various cross members (TG21-001 to TG21-006), and multiple shackle link assemblies (RE43-004, RE150-004, UO150-007, UO43-003L, UO43-003R).
- Fasteners and Bushings: The system utilizes specific hardware, including 3/8-16 - 1/2 x 1.5 long shoulder bolts (UO115-1001), 3/8-16 flange locknuts (UO116-399), bronze bushings (UO136-592), and glide pads (UO136-3348). For triple axle configurations, additional fasteners like 7/16-20 flange locknuts (006-092-01), 7/16-20 - 9/16 x 2.9 long wet bolts (UO115-888), 7/16-20 x 3-1/8 x 4-1/2 U-bolts (UO113-009), and various hex and flange bolts are used.
- Torque Specifications: Specific torque values are critical for proper installation:
- Shackle link nuts: 40 ft-lbs.
- 3/8-16 flange locknuts (cross members): 40 ft-lbs.
- 7/16-20 flange locknuts (wet bolts and shackle links): 40 ft-lbs.
- 1/2-13 x 4 hex bolts: 95 ft-lbs.
- 5/16-18 flange locknuts (cross member braces): 20 ft-lbs.
- U-bolts: 40 ft-lbs (tightened in a cross-pattern sequence).
- Compatibility: The triple axle AllTrek 4000™ system cannot be used with Correct Track or with items hanging down under the frame between the equalizer hangers.
Usage Features:
- Improved Towing Comfort: The primary benefit is a smoother, more comfortable towing experience due to enhanced road shock absorption. This translates to less fatigue for the driver and reduced wear and tear on the trailer and its contents.
- Increased Dynamic Axle Travel: The design allows for greater articulation of the axles, which is particularly beneficial when traversing uneven terrain, reducing stress on the trailer frame and components.
- Reduced Road Shock: The rubber springs effectively dampen vibrations and impacts from road imperfections, leading to a more stable and controlled tow.
- DIY Installation Potential: The owner's manual provides detailed, step-by-step instructions for installation, making it possible for individuals with appropriate tools and mechanical aptitude to perform the upgrade. Tools required include a torque wrench, various sockets and wrenches (11/16", 13/16", 1/2", 9/16"), floor jacks, safety stands, a hammer, and a ratchet.
- Troubleshooting Guide: The manual includes a basic troubleshooting section to address common issues like excessive tire wear, rough ride, and excessive sway, providing potential causes and remedies.
Maintenance Features:
- Rubber Shear Spring Inspection: Regular inspection of the rubber springs is crucial. The manual provides clear guidance on how to identify a worn-out spring:
- Good Condition (Figure 1): Shows a rubber spring at its design load.
- Worn-Out Condition (Figure 2): If the rubber is compressed, measure the offset between the Beam Arm and the Spring Carrier. If this offset is 5/16" or less, the spring needs replacement.
- Normal Wear vs. Damage: The manual clarifies that minor surface cracks (weather checking), minor tearing, or fretting around the edges of the rubber spring are normal and do not necessitate equalizer replacement. This helps users differentiate between cosmetic wear and functional degradation.
- Lubrication (Wet Bolts): For installations involving wet bolts, it is important to ensure proper grease flow. The manual advises on how to install wet bolts to ensure the grease exit hole faces to the side for easy lubrication.
- Torque Checks: While not explicitly stated as a regular maintenance item, the emphasis on precise torque values during installation suggests that periodic checks of fastener torque may be beneficial to ensure continued system integrity.
- Warranty: The system is backed by a 3-year warranty, providing assurance of product quality and support for potential defects. Warranty information can be found on the MORryde website.
- Customer Support: MORryde offers direct customer support via phone (574-293-1581) and email (parts@MORryde.com) for installation questions, troubleshooting, and service information.
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