What Makes the Continental Cargo Cargomate 6×10 Ramp Door Conversion Essential for Troubleshooting and Upkeep?
The Continental Cargo Cargomate 6×10 is a workhorse for hauling equipment, toys, and cargo, but its standard rear barn doors can be a daily frustration for owners who frequently load wheeled items. A ramp door conversion not only transforms usability but also introduces new points for wear, water ingress, and mechanical failure. This guide focuses on troubleshooting common issues that arise after installing a ramp door conversion on the Cargomate 6×10, along with step-by-step upkeep strategies to keep the mechanism safe and functional for years. Whether you are dealing with a sagging ramp, sticky hinges, or compromised seals, understanding these components is critical to avoiding expensive repairs down the road.
How Do I Diagnose and Fix Ramp Door Sag or Misalignment on the Cargomate 6×10?
One of the most common troubleshooting issues with a ramp door conversion is sagging or misalignment after several months of use. On a 6×10 Cargomate, the ramp door weighs roughly 75 to 95 pounds depending on whether you have plywood or aluminum tread plate flooring. Over time, the hinge bolts can loosen, or the weld points on the trailer frame can develop micro-fractures. Start by checking all hinge bolts with a torque wrench—factory specification is typically 30 ft-lbs for 3/8-inch grade 5 bolts. If the door fails to latch squarely at the top, measure the gap between the door edge and the rear frame opening. A gap exceeding 1/8 inch on one side indicates twisting in the frame or worn hinge bushings. Inspect the gas struts (if equipped) to ensure they are not seized or leaking. Replacement struts for a 6×10 ramp door typically cost between $45 and $70 per pair from Continental Cargo dealers.
If misalignment persists, remove the door completely and check the hinge tube for corrosion or debris. Use a wire brush and apply a heavy-duty anti-seize compound (rated for outdoor use, like Loctite 234227) before reassembly. For severe sag, consider installing a Continental Cargo Cargomate 6×10 Tongue Weight Measurement and Adjustment Guide—incorrect tongue weight can exacerbate ramp door alignment by shifting the trailer’s center of gravity unevenly across the rear axle. Once the door is re-hung, cycle it 10 times fully open and closed to seat the hardware, then re-torque all fasteners.
What Are the Best Troubleshooting Steps for Ramp Door Seal Leaks and Water Intrusion?
Water intrusion is the top complaint among Cargomate 6×10 owners after a ramp conversion because the aftermarket seals can compress unevenly. Start by inspecting the bulb seal along the top and sides of the door opening. If you see daylight through the seal when the ramp is closed, replace it with a marine-grade D-profile seal (approx. £25 for a 20-foot roll in the UK, or about $32 USD). Next, check the bottom sweep seal—this is often the first point of failure as it scrapes against the ramp surface. Use a flashlight and a spray bottle with soapy water to find leaks. A failing sweep seal should be replaced with a 6-foot aluminum retainer and rubber blade kit (approximately $55 to $75 from trailer supply retailers).
Inspect the ramp door’s internal aluminum extrusion track for corrosion. If water has pooled inside the hollow extrusions, drill a 1/8-inch weep hole at the bottom corners on each side to allow drainage. Seal any exposed screw holes with silicone sealant rated for marine use (e.g., 3M 5200). For owners in high-humidity climates, pairing this step with the Continental Cargo Cargomate 6×10 Roof Vent Condensation Prevention Tips article will help keep interior moisture levels low and prevent the door seals from rotting prematurely.
How Often Should I Service the Ramp Door Hinges and Latching Mechanism?
To avoid sudden failures while loading a 500-pound ATV, the hinges and latching mechanism need regular maintenance. For the Continental Cargo Cargomate 6×10, a service interval of every 30 days during active use is recommended, or at the start of each season for occasional users. Begin by cleaning all hinge pins and barrels with a degreaser (Simple Green or similar) and a stiff brush. Rinse thoroughly, dry, then apply a lithium-based grease (such as Lucas Oil 10533 Red ‘N Tacky) to each hinge pivot point. Do not use WD-40 as a long-term lubricant—it attracts dust and dries out quickly.
Next, inspect the star wheel latch system at the top of the door. These latches rely on a rotating cam that engages a striker plate. If the cam feels stiff or gritty, disassemble the latch housing (two Phillips-head screws), clean out old lubricant with a cotton swab, and apply a small amount of white lithium grease to the cam surface. Reassemble and test the latch engagement. If the door rattles while driving, the striker plate may need to be shimmed. Use 1/16-inch stainless steel washers (cost about $4 for a pack of ten) behind the striker plate to tighten the closure. For more comprehensive brake system checks that interact with the ramp door’s weight distribution, refer to the Continental Cargo Cargomate 6×10 Brake Controller Installation Guide to ensure your trailer’s stopping power matches the modified cargo load.
| Component | Inspection Interval | Common Issue | Severity | Estimated Cost (USD) |
|---|---|---|---|---|
| Hinge Bolts | Monthly | Loosening (torque drops below 25 ft-lbs) | Medium | $0 (re-torque) or $8 (bolt set) |
| Gas Struts | Every 6 months | Seized or leaking fluid | High | $45–$70 per pair |
| Top Latches (Star Wheel) | Monthly | Cam sticking, loose striker plate | Medium | $4 (shims) or $25 (replacement latch) |
| Ramp Seals (Bulb & Sweep) | Quarterly | Compression set, cracks, tears | High (water damage) | $30–$75 for both |
| Hinge Barrel & Pin | Monthly | Rust, grit buildup | Medium | $8 (lithium grease) |
What Are the Steps to Replace a Damaged Ramp Door on a Cargomate 6×10?
If your ramp door has suffered structural damage—such as a bent aluminum frame from backing into a loading dock, or a cracked plywood core—replacement is the only safe long-term solution. Begin by measuring the exact opening of your Cargomate 6×10. Standard ramp doors for this model measure 72 inches wide by 60 inches tall (6 feet by 5 feet). Purchase a replacement unit from a Continental Cargo authorized dealer. Expect to pay between $650 and $950 for a pre-assembled ramp door with hardware, including hinges and latches. Remove the old door by supporting it with two floor jacks (one at each lower corner), then unbolt the hinge straps from the trailer frame. Have a helper—these doors are awkward for one person.
Before installing the new ramp door, lay it flat on clean ground and measure diagonal distances (corner to corner) to verify it is square within 1/8 inch. Attach the hinge half to the door first, using the supplied bolts and a thread-locking compound. Then lift the door onto the trailer’s hinge halves, aligning the barrels. Insert the hinge pins (usually 5/16-inch diameter) and secure with cotter pins. Test the full range of motion—the door should open to at least 85 degrees without binding. Finally, adjust the star wheel latches so they engage with a firm click. As part of post-installation upkeep, perform a Continental Cargo Cargomate 6×10 Coupling Latch Inspection and Maintenance Guide to ensure the added weight of a new door doesn’t affect the trailer’s coupling behavior when hitched.
How Do I Maintain the Ramp Door Floor Surface to Prevent Slips and Rot?
On a 6×10 Cargomate ramp door, the interior floor surface often consists of 3/4-inch exterior-grade plywood or aluminum diamond plate. Both materials require specific upkeep. For plywood floors, inspect for soft spots or delamination near the hinge area where moisture accumulates. If the surface is simply worn or splintered, sand it down using 60-grit sandpaper on a random orbital sander, then apply two coats of marine-grade polyurethane varnish (e.g., TotalBoat Gleam 2.0). Allow 24 hours of dry time between coats. Cost for a quart-sized varnish is around $40 and covers roughly 40 square feet (plenty for a 6×10 ramp and interior floor). For aluminum floors, look for pitting or scratches that can snag cargo. Lightly sand with 220-grit paper, clean with acetone, and apply a clear coat of urethane aerosol (about $12 per can) for anti-slip properties.
Integrate your floor care with the Continental Cargo Cargomate 6×10 Floor Sanding and Refinishing Tips guide for a complete system of matching the ramp door floor with the main trailer floor. If you transport vehicles, consider adding rubber matting (4-foot-wide rolls, about $2 per linear foot) on the ramp for traction. Secure the matting with stainless steel screws spaced 12 inches apart along the ramp edges to prevent it from shifting during loading.
What Owners Say About Continental Cargo Cargomate 6×10 Ramp Door Conversions
Owner feedback collected from trailer forums and Continental Cargo user groups highlights a mix of praise and recurring trouble spots. One owner from Utah reported that after 18 months, the ramp door gas struts began to fail in cold weather (below 20°F), causing the door to drop suddenly. Another owner in Florida noted that despite regular servicing, the bulb seal on the conversion kit needed replacement every two years due to UV degradation. However, many agree that the convenience of a ramp door far outweighs the maintenance hassle. A commercial user in Texas who hauls a zero-turn mower daily stated that the conversion “paid for itself in six months” by reducing loading time by 75%. The most common advice from experienced owners is to budget an extra $200 per year for replacement seals and lubricants, and to always keep spare hinge pins and star wheel assemblies in the trailer toolbox.
Frequently Asked Questions
Q: Can I install a ramp door conversion on any model year Continental Cargo Cargomate 6×10?
A: Yes, most conversions fit models from 2005 onward, but verify the rear frame dimensions (center-to-center hinge mount width). Older units may have a 70-inch opening that requires a custom door. Always order a kit designed specifically for 6×10 Cargomate trailers.
Q: How much does a professional ramp door conversion cost?
A: Expect to pay between $950 and $1,400 (USD) for a complete conversion including materials and labor, or approximately £750 to £1,100 in the UK. Self-installation lowers the cost to roughly $500–$700 for the ramp door and hardware.
Q: What is the weight capacity of the Cargomate 6×10 ramp door?
A: The factory-rated capacity is 1,500 pounds evenly distributed, but check your specific conversion kit as some aftermarket doors may be rated lower (1,000 pounds). Never exceed the door’s rated capacity regardless of the trailer’s GVWR.
Q: How do I prevent corrosion on the ramp door hinges and latches?
A: Apply a corrosion-inhibitor spray like Boeshield T-9 every three months. Avoid petroleum-based greases that degrade rubber seals. For salt-weather regions, rinse hinges with fresh water after each trip and reapply lubricant monthly.
Q: The ramp door is hard to lift—is something broken?
A: Not necessarily. Gas struts lose pressure over time (typically after 3–5 years). Test by disconnecting one strut—if the door lifts much easier, replace both struts. Also check that the hinge pins are not binding from rust.
Q: Can I install a winch on my ramp door conversion?
A: Yes, but reinforce the mounting point with a steel backing plate (minimum 1/4-inch thick). Some Cargomate conversions include a pre-drilled winch plate at the top center of the door. Use a winch rated for at least 2,000 pounds. Always anchor the trailer before winching to avoid tipping.
