1. はじめに
This manual provides detailed instructions for the proper installation, operation, and maintenance of your CURT 13615 Class 3 Trailer Hitch. This hitch is designed for select models of Lexus NX250, NX350, NX350h, NX450h+, and Toyota RAV4 and Venza. Please read all instructions carefully before proceeding with installation or use.
The CURT 13615 Class 3 Trailer Hitch features a 2-inch x 2-inch receiver tube, offering versatile towing options. It is rated for a maximum Gross Trailer Weight (GTW) of 4,500 lbs and a Tongue Weight (TW) of 675 lbs. When used with a weight distribution hitch, the capacity is also 4,500 lbs. WD and 675 lbs. WDTW. Always ensure that the lowest-rated towing component is not exceeded.
2. 特徴と利点
- 信頼できる強さ: Rated for 4,500 lbs. gross trailer weight, 675 lbs. tongue weight, 4,500 lbs. weight distribution capacity, and 675 lbs. weight distribution tongue weight (limited to lowest-rated towing component).
- 用途の広いデザイン： Equipped with a standard 2-inch x 2-inch hitch receiver, compatible with various towing accessories such as ball mounts, cargo carriers, and bike racks.
- 完全にテスト済み: すべての CURT クラス 3 トレーラー ヒッチ設計は、安全性に関する SAE J684 規格に準拠し、デトロイトのエンジニアリング施設で実際の車載テストを受けています。
- 錆、欠け、紫外線耐性: Protected with a unique dual-coat finish of rust-resistant liquid A-coat and highly durable black powder coat, co-cured for exceptional resistance.
- 簡単にインストールできます: Offers a custom, factory fit on select model years of the Toyota RAV4, Lexus NX250, NX350, NX350h, and NX450h+.
画像: CURT 13615 クラス3 トレーラーヒッチ、asing its robust design and 2-inch receiver.
3. 仕様
| 属性 | 詳細 |
|---|---|
| ブランド | カート |
| モデル番号 | 13615 |
| 車両サービスタイプ | 車 |
| 材料 | 炭素鋼 |
| 仕上げタイプ | Dual-Coat Finish (Liquid A-coat & Black Powder Coat) |
| 最大牽引能力（GTW） | 4500 ポンド |
| 舌の重さ（TW） | 675 ポンド |
| 重量分散容量（WD） | 4500 ポンド |
| 重量配分舌重量（WDTW） | 675 ポンド |
| レシーバーチューブサイズ | 2-Inch x 2-Inch |
| アイテム重量 | 43.9ポンド |
| パッケージ寸法 | 44 x 21 x 16インチ |
4. 箱の中身
- CURT 13615 クラス 3 トレーラー ヒッチ
- Installation Hardware (bolts, nuts, washers, fishwire tool if applicable)
- 説明書
5. セットアップとインストール
Installation of the CURT 13615 trailer hitch is designed for a custom, factory fit on compatible vehicles. While specific steps may vary by vehicle model, the general techniques outlined below are common for many CURT hitch installations. Always refer to the detailed instruction sheet included with your product for vehicle-specific guidance.
5.1 General Installation Techniques
The following video demonstrates common techniques used during trailer hitch installation, including weldnut cleaning, fishwiring, lowering the exhaust, and frame drilling. These techniques may be necessary depending on your vehicle and the condition of its frame.
Video: General Trailer Hitch Installation Techniques by CURT. This video covers weldnut cleaning, fishwiring hardware, lowering the exhaust, and frame drilling, which are common steps in many hitch installations.
5.1.1 Weldnut Cleaning
Over time, vehicle frame weldnuts can accumulate rust, underbody coating, and debris, making it difficult to thread bolts. For minimal rust, use a wire brush and penetrating lubricant (e.g., PB Blaster) to clean the nut. For severe rust, a thread tap matching the hardware specifications may be required. Ensure the tap is perpendicular to the weldnut to prevent cross-threading.
5.1.2 Fishwiring Hardware
If there are no accessible weldnuts, hardware may need to be pulled through the vehicle's frame rail using a fishwire tool. CURT provides a fishwire tool for this purpose. There are two main techniques: standard fishwiring (inserting the coiled end up through the mounting hole and out an access hole, then attaching the spacer and bolt) and reverse fishwiring (threading the carriage bolt onto the fishwire, placing the bolt into the mounting hole head first, then feeding the spacer onto the fishwire and angling it into the mounting hole).
5.1.3 Lowering Exhaust
Some installations require lowering the vehicle's exhaust system to provide adequate clearance for hitch placement. This typically involves separating the rubber isolator from the exhaust hanger rod. Lubricate the isolator with soapy water or a penetrating lubricant for easier removal. Always support the exhaust system with a wire hanger or ratchet strap to prevent it from hanging freely and causing damage.
5.1.4 Frame Drilling (If Required)
Most CURT hitches do not require drilling. However, if additional mounting holes are needed, use the hitch as a template to mark the required locations. Drill a starter hole with a small bit, then gradually increase the bit size until the desired hole size is reached. For hard steel frames, a cobalt drill bit with coolant or grease is recommended to prevent overheating. A step drill can also be used to gradually enlarge holes. If an access hole needs to be enlarged to fit carriage bolts, a die grinder can be used to slightly elongate the hole.
5.2製品コンポーネント
画像: クローズアップ view of the standard 2-inch x 2-inch hitch receiver, ready for various towing accessories.
Image: Illustration of the dual-coat finishing process, showing the liquid A-coat application for enhanced rust resistance.
Image: A CURT hitch undergoing rigorous testing in an engineering facility to ensure compliance with SAE J684 standards.
Image: Compatibility note for bike racks, showing that standard and tray-style bike racks are compatible, while vertical hanging racks are not recommended.
6. 操作手順
Before each towing trip, perform a thorough inspection of your trailer hitch and all towing components. Ensure all bolts are tightened to the specified torque values and that the hitch is free from damage or excessive wear. Always connect safety chains according to local regulations and ensure proper lighting connections are made.
- 重量容量: Never exceed the lowest-rated towing component, whether it's the vehicle's towing capacity, the hitch's capacity, or the trailer's capacity.
- 負荷分散: 従来のトレーラーの場合は、トレーラーの総重量の約 10 ～ 15% をタングに載せて、トレーラーの荷重を均等に分散します。
- 安全運転： Drive at reduced speeds, allow for increased braking distances, and make wider turns when towing.
- 定期点検: Periodically check the hitch, ball mount, and trailer connections during long trips.
7. メンテナンス
To ensure the longevity and safe operation of your CURT trailer hitch, regular maintenance is essential:
- 定期的に点検する: Before each use, inspect the hitch for any signs of rust, cracks, bends, or other damage. Check all fasteners for tightness.
- クリーン： Keep the hitch receiver free of dirt, debris, and moisture. Clean with mild soap and water, then dry thoroughly.
- 潤滑剤： Apply a thin coat of grease or rust-inhibiting spray to the inside of the receiver tube and any moving parts to prevent corrosion and ensure smooth operation.
- 保護仕上げ: The dual-coat finish provides excellent protection. If any chips or scratches occur, touch them up with appropriate paint to prevent rust.
8。 トラブルシューティング
- ボルトの取り付けが困難: If bolts do not thread easily, clean the weld nuts thoroughly using a wire brush and penetrating oil, or a thread tap if necessary (refer to Section 5.1.1).
- Hitch Not Fitting: Double-check vehicle compatibility and ensure all obstructions (e.g., exhaust, underbody panels) have been properly addressed as per the installation instructions. Some applications may require minor trimming of the fascia (refer to Section 5.1.4 for general frame drilling/enlarging techniques).
- 牽引中の過度の騒音: Ensure all connections are secure and properly torqued. Check for worn or loose components in the hitch, ball mount, or trailer.
- トレーラーの揺れ: This can be caused by improper load distribution or insufficient tongue weight. Adjust the trailer load to achieve the recommended 10-15% tongue weight. Consider using a weight distribution hitch or sway control device.
9. 保証とサポート
CURT stands behind the quality of its trailer hitches. The CURT 13615 Class 3 Trailer Hitch is backed by a 限定生涯保証. For specific warranty details, claims, or technical support, please refer to the documentation included with your product or visit the official CURT webサイト。
さらに詳しいサポートやお問い合わせについては、 CURT製造 webサイト.
