1. Product Overview
The Carry-On Trailer Bearing Kit 502T is designed for trailer hub assemblies. This kit is compatible with most 1,750 lb. rated hub assemblies featuring a 1-3/8 inch spindle diameter. It also serves as a direct replacement for models such as 545T and is suitable for trailers with a 2,990 lb. Gross Vehicle Weight Rating (GVWR) or below.
Kit Contents:
- One (1) 1-1/16 inch bearing
- One (1) 1-3/8 inch bearing
- One (1) outer race (L-44610)
- One (1) inner race (L-68111)
- One (1) 1.719 inch seal
- One (1) cotter pin
This image displays all components included in the Carry-On Trailer Bearing Kit 502T. Visible parts are two tapered roller bearings of different sizes, an inner race (L-68111), an outer race (L-44610), a grease seal (1.719), and a cotter pin. These components are essential for maintaining trailer wheel hubs.
2. Installation Guidelines
Proper installation of trailer bearings is crucial for safety and performance. If you are not experienced with trailer maintenance, it is recommended to seek professional assistance. Always refer to your trailer's specific service manual for detailed instructions.
General Installation Steps:
- Preparation: Ensure the hub assembly is clean and free from old grease, debris, or rust. Inspect the spindle for any damage.
- Race Installation: Carefully press the new inner (L-68111) and outer (L-44610) races into the hub. Ensure they are seated flush and correctly oriented. Do not use excessive force that could damage the races or hub.
- Bearing Lubrication: Pack both the 1-1/16 inch and 1-3/8 inch bearings thoroughly with compatible wheel bearing grease. Ensure grease is forced through all rollers and cages.
- Bearing Installation: Install the packed bearings into their respective races within the hub.
- Seal Installation: Carefully install the 1.719 inch grease seal into the back of the hub. Ensure it is seated squarely and fully.
- Assembly to Spindle: Slide the assembled hub onto the trailer spindle. Install the outer bearing, washer, and spindle nut.
- Nut Torque and Cotter Pin: Tighten the spindle nut to the manufacturer's specifications, then back off slightly to allow for proper wheel rotation without play. Insert the cotter pin through the spindle nut and spindle hole to secure it. Bend the ends of the cotter pin to prevent removal.
- Final Check: Rotate the wheel to ensure smooth operation and check for any excessive play.
3. Maintenance and Lubrication
Regular maintenance of your trailer bearings is essential for extending their lifespan and ensuring safe towing. Bearings should be inspected and lubricated periodically, especially before long trips or after prolonged storage.
Recommended Maintenance Practices:
- Inspection: Annually, or every 12,000 miles, disassemble the hub to inspect bearings, races, and seals for wear, pitting, or damage. Replace any damaged components immediately.
- Cleaning: Clean old grease from bearings and hub cavity using a suitable solvent. Allow parts to dry completely before repacking.
- Repacking: Repack bearings with a high-quality, compatible wheel bearing grease. Ensure all surfaces are adequately coated. The compatible lubricant for this kit is grease.
- Seal Replacement: It is recommended to replace grease seals every time the bearings are serviced to ensure a proper seal and prevent contamination.
- Torque Check: Periodically check the spindle nut torque to ensure proper adjustment and prevent premature wear.
4. Troubleshooting Common Issues
Addressing common bearing issues promptly can prevent more significant damage and ensure safe operation.
| Problem | Possible Cause | Solution |
|---|---|---|
| Excessive Wheel Play/Wobble | Loose spindle nut, worn bearings, damaged races. | Adjust spindle nut to proper torque. Inspect and replace worn bearings or races. |
| Grinding or Growling Noise | Lack of lubrication, contaminated grease, worn or damaged bearings/races. | Disassemble, clean, inspect, repack with fresh grease, or replace components as needed. |
| Wheel Hub Overheating | Insufficient lubrication, overtightened spindle nut, incorrect bearing installation. | Check grease levels and quality. Adjust spindle nut. Re-install bearings correctly. |
| Grease Leakage from Hub | Damaged or improperly installed grease seal. | Replace the grease seal, ensuring proper installation. |
5. Product Specifications
| Specification | Detail |
|---|---|
| Brand | Carry-On Trailer |
| Model Number | 502T |
| Material | Metal |
| Item Dimensions (L x W x H) | 1 x 3.75 x 7.75 inches |
| Item Weight | 0.75 Pounds (12 ounces) |
| Bearing Number | 502T |
| Bearing Type | Ball Bearing (Note: Product description implies tapered roller bearings, which is typical for trailer hubs. 'Ball Bearing' might be a generic classification in the data.) |
| Compatible Lubricant | Grease |
| UPC | 654102005021 |
| Global Trade Identification Number (GTIN) | 00654102005021 |
| Manufacturer | Carry-On Trailer |
| ASIN | B00G3EDTD2 |
6. Warranty and Support
For specific warranty information or technical support regarding your Carry-On Trailer Bearing Kit 502T, please contact Carry-On Trailer directly. Keep your purchase receipt as proof of purchase.
Carry-On Trailer parts are designed as OEM replacements for Carry-On trailers and are generally compatible with most other utility and cargo trailers rated at 2,990 lb. Gross Vehicle Weight Rating and below.