Installation Instructions for Infiniti FX35, FX37, FX50, and QX70

Part Numbers:

• 44692
• 75778
• 87639

Wiring Access Location:

• SUV3, SUV4

Tools Required:

• Round File
• Tape
• Short Phillips Head Screwdriver
• Flat-Blade Screwdriver
• Wrenches: 10mm, 12mm, 13mm, 14mm, 17mm, 19mm, 9/16"
• Drill Bits: 7/16"

Step-by-Step Instructions:

1. Remove Splash Guards:

   • Remove splash guards from both driver and passenger side wheel wells by removing three Phillips head screws and one push pin per side (see Figure 2). Retain for reinstallation.

2. Remove Appearance Panels:

   • Detach panels from both sides by removing push pins and M6 bolts (see Figure 3) to access the frame rails. Return panels and fasteners to the vehicle owner.

3. Remove Tow Hook:

   • Remove the driver-side tow hook by unscrewing four M10 fasteners. Return the tow hook and fasteners to the vehicle owner.

4. Remove Suspension Damper:

   • Remove the suspension damper on the driver’s side for wrench clearance to access the forward-most fastener.

5. Detach Passenger Side Bolts:

   • Remove two M8 hex bolts from the passenger side frame rail (rearward of the exhaust hanger bracket). Discard these bolts.

6. Raise Hitch into Position:

   • Install hitch using the existing weld nuts on the frame, except for the bolt-on bracket.

7. Torque Fasteners:

   • Tighten fasteners to the specified torque:
     • M8 x 1.25 CL10.9 fasteners: 25 lb-ft (34 N*m)
     • M10 x 1.25 CL8.8 fasteners: 42 lb-ft (57 N*m)
     • M12 x 1.25 CL8.8 fasteners: 76 lb-ft (103 N*m)

8. Modify Frame Hole:

   • Elongate the rear-most hole in the passenger side frame rail by approximately 1/8” using a drill or file. Paint exposed metal to prevent corrosion.

9. Install U-Bolt:

   • Insert the U-bolt (see Figure 4) and slide conical washers over it to act as spacers. Secure washers with tape until installation is complete (see Figure 5).

10. Attach Bolt-on Bracket:

    • Install the bolt-on bracket using the remaining fasteners (see Figure 6).

11. Torque U-Bolt and Bracket Fasteners:

    • Tighten U-bolt lock nuts to 35 lb-ft (47 Nm) and 3/8-16 GR8 fasteners to 45 lb-ft (61 Nm).

12. Reinstall Suspension Damper:

    • Reattach the suspension damper removed in Step 4.

13. Reinstall Splash Guards:

    • Reinstall the splash guards removed in Step 1.

Hardware List:

• Qty (2): Hex Bolt M8 x 1.25 x 30mm CL10.9
• Qty (4): Hex Bolt M10 x 1.25 x 30mm CL8.8
• Qty (3): Hex Bolt M12 x 1.25 x 35mm CL8.8
• Qty (12): Conical Toothed Washer – 3/8"
• Qty (3): Conical Toothed Washer – 1/2"
• Qty (1): U-Bolt 3/8"-16 GR5
• Qty (2): Flanged Lock Nuts – 3/8"-16
• Qty (2): Hex Bolt 3/8"-16 x 1-1/4" GR8
• Qty (2): Hex Nuts 3/8"-16 GR5

Safety Notes:

• Check the hitch frequently to ensure all fasteners and the ball are properly tightened.
• If the hitch is removed, plug all holes in the trunk pan or body panels to prevent water and exhaust fumes from entering.
• Replace any damaged hitch or ball immediately.
• Observe safety precautions when working beneath the vehicle and wear eye protection.
• Do not cut access or attachment holes with a torch.

Specifications:

• Hitch Type: Weight Carrying (Ball Mount)
  • Max Gross Trailer Weight: 4,000 lbs (1,816 kg)
  • Max Tongue Weight: 400 lbs (182 kg)
• Weight Distributing: Not compatible with spring bars.

Manufacturer Notes:

• Complies with safety specifications and requirements for connecting devices and towing systems of the state of New York, V.E.S.C. Regulation V-5, and SAE J684.

Installation Instructions

Part Numbers:

• 44692
• 75778
• 87639

Wiring Access Location:

• SUV3, SUV4

Tools Required:

• Round File
• Tape
• Short Phillips Head Screwdriver
• Flat-Blade Screwdriver
• Wrenches: 10mm, 12mm, 13mm, 14mm, 17mm, 19mm, 9/16"
• Drill Bits: 7/16"

Step-by-Step Instructions:

1. Remove Splash Guards:

   • Remove splash guards from both driver and passenger side wheel wells by removing three Phillips head screws and one push pin per side (see Figure 2). Retain for reinstallation.

2. Remove Appearance Panels:

   • Detach panels from both sides by removing push pins and M6 bolts (see Figure 3) to access the frame rails. Return panels and fasteners to the vehicle owner.

3. Remove Tow Hook:

   • Remove the driver-side tow hook by unscrewing four M10 fasteners. Return the tow hook and fasteners to the vehicle owner.

4. Remove Suspension Damper:

   • Remove the suspension damper on the driver’s side for wrench clearance to access the forward-most fastener.

5. Detach Passenger Side Bolts:

   • Remove two M8 hex bolts from the passenger side frame rail (rearward of the exhaust hanger bracket). Discard these bolts.

6. Raise Hitch into Position:

   • Install hitch using the existing weld nuts on the frame, except for the bolt-on bracket.

7. Torque Fasteners:

   • Tighten fasteners to the specified torque:
     • M8 x 1.25 CL10.9 fasteners: 25 lb-ft (34 N·m)
     • M10 x 1.25 CL8.8 fasteners: 42 lb-ft (57 N·m)
     • M12 x 1.25 CL8.8 fasteners: 76 lb-ft (103 N·m)

8. Modify Frame Hole:

   • Elongate the rear-most hole in the passenger side frame rail by approximately 1/8” using a drill or file. Paint exposed metal to prevent corrosion.

9. Install U-Bolt:

   • Insert the U-bolt (see Figure 4) and slide conical washers over it to act as spacers. Secure washers with tape until installation is complete (see Figure 5).

10. Attach Bolt-on Bracket:

    • Install the bolt-on bracket using the remaining fasteners (see Figure 6).

11. Torque U-Bolt and Bracket Fasteners:

    • Tighten U-bolt lock nuts to 35 lb-ft (47 N·m) and 3/8-16 GR8 fasteners to 45 lb-ft (61 N·m).

12. Reinstall Suspension Damper:

    • Reattach the suspension damper removed in Step 4.

13. Reinstall Splash Guards:

    • Reinstall the splash guards removed in Step 1.

Hardware List:

• Qty (2): Hex Bolt M8 x 1.25 x 30mm CL10.9
• Qty (4): Hex Bolt M10 x 1.25 x 30mm CL8.8
• Qty (3): Hex Bolt M12 x 1.25 x 35mm CL8.8
• Qty (12): Conical Toothed Washer – 3/8"
• Qty (3): Conical Toothed Washer – 1/2"
• Qty (1): U-Bolt 3/8"-16 GR5
• Qty (2): Flanged Lock Nuts – 3/8"-16
• Qty (2): Hex Bolt 3/8"-16 x 1-1/4" GR8
• Qty (2): Hex Nuts 3/8"-16 GR5

Safety Notes:

• Check the hitch frequently to ensure all fasteners and the ball are properly tightened.
• If the hitch is removed, plug all holes in the trunk pan or body panels to prevent water and exhaust fumes from entering.
• Replace any damaged hitch or ball immediately.
• Observe safety precautions when working beneath the vehicle and wear eye protection.
• Do not cut access or attachment holes with a torch.

Specifications:

• Hitch Type: Weight Carrying (Ball Mount)
  • Max Gross Trailer Weight: 4,000 lbs (1,816 kg)
  • Max Tongue Weight: 600 lbs (272 kg)
• Weight Distributing: Not compatible with spring bars.

Manufacturer Notes:

• Complies with safety specifications and requirements for connecting devices and towing systems of the state of New York, V.E.S.C. Regulation V-5, and SAE J684.

Attention: This is a summary of the installation procedure. For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.

Technical Support:

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.

Warranty:

For complete warranty instructions, please download the full installation PDF.