Installation Instructions for Towing Hitch Ball (Part Number 74307) ## Part Numbers: - 74307 ## Wiring Access Location: - Not applicable. ## Tools Required: - Wrenches: 3/4" - Drill Bits: None - Torque Wrench (optional for accuracy) ## Step-by-Step Instructions: 1. Preparation: - Apply heavy oil or grease to the hitch ball before each connection to the coupler. Avoid accumulation on the nut or threads of the shank. 2. Maintenance of Contact Surface: - Ensure the contact surface between the ball and shank is free of grit to prevent galling or binding. - Lubricate the contact surface with light oil, motor oil, or equivalent. 3. Plunger Cleaning: - If the plunger becomes sticky due to contamination, remove the ball and clean or flush the shank assembly with a light aerosol lubricant. 4. Coupler Adjustment: - Tighten the coupler adjustment nut until it clamps tightly on the ball. - Back the nut off by 1/2 turn. 5. Safety Check: - Ensure the plunger is in the locked position before towing. - Verify that there is at least 50 pounds of tongue weight on the ball. 6. Final Tightening: - Torque the nut to: - 160 ft-lb for a 3/4" shank. - 250 ft-lb for a 1" shank. - Ensure at least one thread of the shank is visible beyond the nut. ## Hardware List: - Interchangeable hitch ball (3/4" or 1" shank). - Washer (provided). - Coupler adjustment nut. ## Safety Notes: - Always use the correct ball and coupler combination as stamped on the coupler. - Never exceed weight ratings: - 3/4" shank: 5,000 LB GTW, 500 LB Tongue WT. - 1" shank: 8,000 LB GTW, 800 LB Tongue WT. - Never attach a tow rope, chain, or elastic rope to the hitch ball. - Always use safety chains, crossing them under the trailer tongue. ## Specifications: - Torque Values: - 160 ft-lb (3/4" shank) - 250 ft-lb (1" shank) - Weight Ratings: - 3/4" shank: 5,000 LB GTW, 500 LB Tongue WT. - 1" shank: 8,000 LB GTW, 800 LB Tongue WT. - Recommended Use: Only for towing trailers or vehicles with a socket-type coupler. Warning: Failure to adhere to these instructions may result in serious injury or death. Manufacturer Notes: Always verify tightness before each use and ensure compliance with safety guidelines.

Installation Instructions for Towing Hitch Ball

Part Numbers:

• 74307

Wiring Access Location:

• Not applicable.

Tools Required:

• Wrenches: 3/4"
• Drill Bits: None
• Torque Wrench (optional for accuracy)

Step-by-Step Instructions:

1. Preparation:

• Apply heavy oil or grease to the hitch ball before each connection to the coupler. Avoid accumulation on the nut or threads of the shank.

2. Maintenance of Contact Surface:

• Ensure the contact surface between the ball and shank is free of grit to prevent galling or binding.
• Lubricate the contact surface with light oil, motor oil, or equivalent.

3. Plunger Cleaning:

• If the plunger becomes sticky due to contamination, remove the ball and clean or flush the shank assembly with a light aerosol lubricant.

4. Coupler Adjustment:

• Tighten the coupler adjustment nut until it clamps tightly on the ball.
• Back the nut off by 1/2 turn.

5. Safety Check:

• Ensure the plunger is in the locked position before towing.
• Verify that there is at least 50 pounds of tongue weight on the ball.

6. Final Tightening:

• Torque the nut to:
  • 160 ft-lb for a 3/4" shank.
  • 250 ft-lb for a 1" shank.
• Ensure at least one thread of the shank is visible beyond the nut.

Hardware List:

• Interchangeable hitch ball (3/4" or 1" shank).
• Washer (provided).
• Coupler adjustment nut.

Safety Notes:

• Always use the correct ball and coupler combination as stamped on the coupler.
• Never exceed weight ratings:
  • 3/4" shank: 5,000 LB GTW, 500 LB Tongue WT.
  • 1" shank: 8,000 LB GTW, 800 LB Tongue WT.
• Never attach a tow rope, chain, or elastic rope to the hitch ball.
• Always use safety chains, crossing them under the trailer tongue.

Specifications:

• Torque Values:
  • 160 ft-lb (3/4" shank)
  • 250 ft-lb (1" shank)
• Weight Ratings:
  • 3/4" shank: 5,000 LB GTW, 500 LB Tongue WT.
  • 1" shank: 8,000 LB GTW, 800 LB Tongue WT.
• Recommended Use: Only for towing trailers or vehicles with a socket-type coupler.

Warning:

Failure to adhere to these instructions may result in serious injury or death.

Additional Notes:

• Always verify tightness before each use and ensure compliance with safety guidelines.
• For technical support and assistance, our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.
• For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.