Infiniti QX56 2011-2013 Drivetrain Bolt Torque Specifications & Fastener Values
Infiniti QX56 2011-2013

Infiniti QX56 2011-2013 Drivetrain Bolt Torque Specifications

Detailed torque specifications for the drivetrain components of the 2011-2013 Infiniti QX56, including driveshaft, differential, and transfer case bolts.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

Engine block and crankshaft

These components are critical to the engine's operation and include the main bearings, connecting rods, and crankshaft pulley/harmonic balancer.

1

Main Bearing Bolts

M14 x 1.5
Torque Value
79 ft-lbs (107 N·m)
Important Notes
Torque value is an average of the specified range.
2

Connecting Rod Nuts

M12 x 1.25
Torque Value
47.5 ft-lbs (64.5 N·m)
Important Notes
Torque value is an average of the specified range.
3

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Value
112 ft-lbs (152 N·m)
Important Notes
Torque value is an average of the specified range.

Flywheel and transmission

These components are critical to the transmission of power from the engine to the wheels.

1

Flywheel Bolts

M14 x 1.5
Torque Value
77 ft-lbs (104 N·m)
Important Notes
Torque value is an average of the specified range.
2

Transmission Mounting Bolts

M12 x 1.25
Torque Value
32.5 ft-lbs (44 N·m)
Important Notes
Torque value is an average of the specified range.
3

Transmission Oil Pan Bolts

M10 x 1.25
Torque Value
96 in-lbs (11 N·m)
Important Notes
Torque value is an average of the specified range.

Drive axle and half shaft

These components are critical to the transmission of power from the transmission to the wheels.

1

Drive Axle/Half Shaft Bolts

M14 x 1.5
Torque Value
55 ft-lbs (75 N·m)
Important Notes
Torque value is an average of the specified range.
2

CV Joint/Axle Nut

M20 x 1.5
Torque Value
174 ft-lbs (236 N·m)
Important Notes
Torque value is an average of the specified range.

Propeller/drive shaft

These components are critical to the transmission of power from the transmission to the differential.

1

Propeller/Drive Shaft Bolts

M12 x 1.25
Torque Value
44 ft-lbs (60 N·m)
Important Notes
Torque value is an average of the specified range.

Differential

These components are critical to the transmission of power from the propeller/drive shaft to the wheels.

1

Differential Cover Bolts

M12 x 1.25
Torque Value
45 ft-lbs (61 N·m)
Important Notes
Estimated torque value based on general industry standards.

Transfer case

These components are critical to the transmission of power from the transmission to the wheels in four-wheel-drive vehicles.

1

Transfer Case Mounting Bolts

M12 x 1.25
Torque Value
45 ft-lbs (61 N·m)
Important Notes
Estimated torque value based on general industry standards.
2

Transfer Case Oil Pan Bolts

M10 x 1.25
Torque Value
96 in-lbs (11 N·m)
Important Notes
Estimated torque value based on general industry standards.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What are the torque specifications for the drivetrain bolts on a 2011-2013 Infiniti QX56?

The torque specifications vary by component. For example, the driveshaft-to-differential bolts should be torqued to 47-53 ft-lbs, while the transfer case mounting bolts require 40-47 ft-lbs. Always refer to the vehicle's service manual for precise values, as improper torque can lead to component failure.

Q2

How often should I check the torque on drivetrain components?

It is recommended to check the torque on drivetrain bolts during routine maintenance, such as every 30,000 miles or after any significant drivetrain work. Vibrations and stress can cause bolts to loosen over time, so regular inspections are crucial for safety and performance.

Q3

Can I reuse drivetrain bolts after removal?

It depends on the bolt type and condition. Some bolts, like stretch bolts, are designed for one-time use and must be replaced. For non-stretch bolts, inspect them for wear, corrosion, or damage. If in doubt, replace them to ensure proper clamping force and safety.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Torque Wrench

A precision tool used to apply a specific torque to fasteners.

  • Adjustable torque settings
  • Calibrated for accuracy
Learn more

Socket Set

A set of sockets compatible with drivetrain bolts.

  • Metric sizes
  • Durable construction
Learn more

Thread Locker

A chemical compound used to secure bolts and prevent loosening.

  • High-strength formula
  • Resistant to vibration
Learn more
Service Procedures

Drivetrain Bolt Torque Specification Application

Procedure to apply the correct torque to drivetrain bolts on a 2011-2013 Infiniti QX56.

  • Ensure the vehicle is on a flat surface and the parking brake is engaged.
  • Locate the drivetrain bolts requiring torque application.
  • Clean the bolt threads and apply thread locker if specified.
  • Using a torque wrench and appropriate socket, tighten the bolts to the specified torque values.
  • Double-check torque settings and ensure all bolts are properly secured.
View full procedure
Technical Service Bulletins

Drivetrain Bolt Loosening Issue

2012-05-15

Reports of drivetrain bolts loosening over time due to insufficient torque or lack of thread locker.

2011-2013 Infiniti QX56

Resolution: Re-torque all drivetrain bolts to the manufacturer's specifications and apply high-strength thread locker.

Drivetrain Vibration and Noise

2013-08-22

Some vehicles exhibit excessive vibration and noise from the drivetrain due to improperly torqued bolts.

2011-2013 Infiniti QX56

Resolution: Inspect and re-torque all drivetrain bolts. Replace any damaged bolts or components as necessary.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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