CURT 18112 Cargo Carrier Installation Manual
Model Number: 18112
Level of Difficulty: Easy
⚠️ WARNING: Do not carry flammable items on the carrier. Do not allow exhaust fumes to blow directly on items in the carrier. This is a fire hazard.
Product Overview
This document provides instructions for the installation of the CURT 18112 cargo carrier. This carrier is designed to be mounted to a vehicle's trailer hitch receiver.
Product Photo Description: The CURT 18112 cargo carrier is depicted, showing a robust metal platform with side rails and integrated ramps. It is shown attached to a vehicle's hitch receiver via its shank assembly. The ramps are in a deployed position, ready for loading.
Parts List
| Qty | Description | # |
|---|---|---|
| 1 | Bottom bracket | 1 |
| 4 | U-clamp | 2 |
| 9 | Lock nut, M10 | 3 |
| 4 | Eye bolt, M10 x 45mm | 4 |
| 1 | Carrier frame | 5 |
| 1 | Fixed plate | 6 |
| 1 | Button socket cap screw, M10 x 25mm | 7 |
| 2 | Eye bolt, M10 x 20mm | 8 |
| 1 | Flat washer, M10 | 9 |
| 1 | Shank assembly | 10 |
| 1 | Hex head bolt, M16 | 11 |
| 1 | Lock nut, M16 | 12 |
| 1 | Pin | 13 |
| 2 | Clip | 14 |
| 1 | Anti-rattle hitch pin, M16 | 15 |
| 1 | Spring washer, M16 | 16 |
| 1 | Flat washer, M16 | 17 |
| 2 | Button socket cap screw, M10 x 20mm | 18 |
| 1 | Upper ramp | 19 |
| 1 | Lower ramp | 20 |
Tools Required
- Open wrench, 17mm
- Open wrench, 24mm
- Torque wrench
- Adjustable wrench
- Socket, 17mm
- Hex key, 6mm
Weight Capacities
| Weight capacity | 500 lbs. | 227 kg |
Product Registration
CURT Group stands behind its products with industry-leading warranties. To help improve the product line and understand customer needs, register your purchase by visiting: warranty.curtgroup.com/surveys.
CURT Group values customer feedback to make improvements on its products.
Assembly Instructions
Step 1: Assemble Ramps
Align the holes in the upper ramp (#19) and lower ramp (#20) hinge brackets. Insert an M10 button socket cap screw (#18) into each hinge. Secure with an M10 lock nut (#3), ensuring the hinge operates freely.
Diagram Description: This step shows the connection of the upper ramp (part 19) and the lower ramp (part 20) via hinge brackets. Two M10 button socket cap screws (part 18) are inserted through the aligned hinge holes, and M10 lock nuts (part 3) are used to secure them. A close-up view shows the screw and nut assembly.
Step 2: Attach Bottom Bracket to Carrier Frame
Place the bottom bracket (#1) on the bottom of the carrier frame (#5) and align the square holes. Insert an M10 eye bolt (#4) through the bottom bracket, carrier frame, and U-clamp (#2) in all four locations. Note: The head of the eye bolt will be on the outside of the carrier frame. Secure with M10 lock nuts (#3). Snug the hardware, but do not fully tighten.
Diagram Description: This step illustrates attaching the bottom bracket (part 1) to the carrier frame (part 5). Four M10 eye bolts (part 4) are passed through aligned holes in the bottom bracket, carrier frame, and U-clamps (part 2). The heads of the eye bolts are positioned on the exterior of the carrier frame. M10 lock nuts (part 3) are used for securing. A close-up view highlights the eye bolt and lock nut connection.
Step 3: Mount Fixed Plate
Mount the fixed plate (#6) to the carrier frame (#5) by inserting an M10 eye bolt (#8) through the upper hole in the fixed plate and the upper hole in the carrier frame as shown. Secure with an M10 lock nut (#3). Insert an M10 button socket cap screw (#7) through the lower hole in the carrier frame and the lower hole in the fixed plate. Secure with an M10 lock nut. Insert M10 eye bolt into top hole of carrier frame as shown. Slide M10 flat washer (#9) onto eye bolt. Secure with an M10 lock nut.
At this time, torque all M10 hardware in steps 2 and 3 to 12 ft-lbs.
Diagram Description: This step details attaching the fixed plate (part 6) to the carrier frame (part 5). An M10 eye bolt (part 8) connects the upper holes of the fixed plate and carrier frame, secured by an M10 lock nut (part 3). An M10 button socket cap screw (part 7) connects the lower holes, secured by another M10 lock nut. A separate M10 eye bolt is inserted into the top hole of the carrier frame, a flat washer (part 9) is added, and it's secured with an M10 lock nut.
Step 4: Install Shank Assembly
Install the shank assembly (#10) on the bottom bracket (#1) by aligning the two upper holes in the shank assembly with both holes in the bottom bracket. Insert an M16 hex head bolt (#11) through the hole in the shank assembly and bottom bracket nearest to the cargo area. Secure with an M16 lock nut (#12), tightening until the shank assembly still pivots freely. Insert pin (#13) into the other upper hole on the shank assembly and bottom bracket and secure with a clip (#14). Insert the shank assembly into the vehicle's receiver tube, aligning the hole in the shank assembly with the hole in the receiver. Insert the M16 spring washer (#16) and M16 flat washer (#17) onto the M16 anti-rattle hitch pin (#15). Insert the M16 hitch pin through the receiver tube and the shank assembly hole. Tighten until there is no longer any rattle. Insert a clip through the M16 hitch pin.
Diagram Description: This step shows the attachment of the shank assembly (part 10) to the bottom bracket (part 1) using an M16 hex head bolt (part 11) and M16 lock nut (part 12). A pin (part 13) and clip (part 14) secure another connection point. The diagram then shows the shank assembly inserted into a vehicle's receiver tube. An M16 anti-rattle hitch pin (part 15) is passed through the receiver and shank assembly, with an M16 spring washer (part 16) and M16 flat washer (part 17) installed before securing with a final clip (part 14). Close-up views illustrate these connections.
Step 5: Ramp Operation and Folding
With the ramp in the upright position, fasten the rubber belt on the step bolt of the ramp. Note: To properly align the locking pin and the fixed plate, the upper ramp (19) and the rubber foot of the lower ramp (20) must be in contact with each other. Both sections of the ramp need to be moved together to allow the proper angle for the locking pin to align with the hole on the fixed plate.
Diagram Description: This step shows the ramp in its upright position. A rubber belt is attached to a step bolt on the ramp. A note clarifies the alignment requirement for the locking pin. A sequence of diagrams illustrates the folding mechanism of the cargo basket, showing the transition from the deployed state to the folded state using directional arrows.
