Infiniti Vehicle Models QX56 2004-2010 Torque Specifications
Infiniti Vehicle Models QX56 2004-2010

Infiniti Vehicle Models QX56 2004-2010 Torque Specifications

Complete Infiniti Vehicle Models QX56 2004-2010 torque specifications guide. Includes factory-specified torque values, torque sequences, and technical specifications for all components including body, brakes, drivetrain, electrical, emissions sensors, fuel, exhaust, HVAC, and suspension. Essential information for proper assembly and maintenance.

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

5.6l Engine

Torque specifications for 5.6L Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.25
Torque Specification
1. 33 ft-lbs (45 N·m) 2. 37 ft-lbs (50 N·m)
Important Notes
Follow the manufacturer's torque sequence to avoid warping the cylinder head.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Ensure the valve cover gasket is properly seated before tightening.

Crankshaft And Bearings

1

Main Bearing Bolts

M10 x 1.25
Torque Specification
32 ft-lbs (43 N·m)
Important Notes
Follow the manufacturer's torque sequence to ensure even clamping force.
2

Connecting Rod Nuts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the connecting rod bearings are properly installed before tightening.

Timing System

1

Timing Chain Tensioner Bolt

M8 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure the tensioner is properly seated before tightening.
2

Camshaft Sprocket Bolt

M12 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Ensure the camshaft sprocket is properly aligned before tightening.

Intake And Exhaust

1

Intake Manifold Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Follow the manufacturer's torque sequence to ensure even clamping force.
2

Exhaust Manifold Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the exhaust manifold gasket is properly seated before tightening.

Accessories

1

Starter Motor Mounting Bolts

M10 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure the starter motor is properly aligned before tightening.
2

Alternator Mounting Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the alternator is properly aligned before tightening.

5.6l V8 Engine

Torque specifications for 5.6L-V8 Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.25
Torque Specification
1. 33 ft-lbs (45 N·m) 2. 37 ft-lbs (50 N·m)
Important Notes
Follow the manufacturer's torque sequence to avoid warping the cylinder head.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Ensure the valve cover gasket is properly seated before tightening.

Crankshaft And Bearings

1

Main Bearing Bolts

M10 x 1.25
Torque Specification
32 ft-lbs (43 N·m)
Important Notes
Follow the manufacturer's torque sequence to ensure even clamping force.
2

Connecting Rod Nuts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the connecting rod bearings are properly installed before tightening.

Timing System

1

Timing Chain Tensioner Bolt

M8 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure the tensioner is properly seated before tightening.
2

Camshaft Sprocket Bolt

M12 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Ensure the camshaft sprocket is properly aligned before tightening.

Intake And Exhaust

1

Intake Manifold Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Follow the manufacturer's torque sequence to ensure even clamping force.
2

Exhaust Manifold Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the exhaust manifold gasket is properly seated before tightening.

Accessories

1

Starter Motor Mounting Bolts

M10 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure the starter motor is properly aligned before tightening.
2

Alternator Mounting Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the alternator is properly aligned before tightening.

5r05 Transmission

Torque specifications for 5r05 Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M14 x 1.5
Torque Specification
48.5 ft-lbs (65.7 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M10 x 1.25
Torque Specification
54 ft-lbs (73 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.

Transmission Fluid System

1

Transmission Drain and Fill Plugs

M12 x 1.5
Torque Specification
36 ft-lbs (48.7 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.
2

Transmission Fluid Drain/Fill Plug

M12 x 1.5
Torque Specification
36 ft-lbs (48.7 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.

Transmission Case

1

Transmission Case Bolts

M16 x 1.5
Torque Specification
70 ft-lbs (94.9 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.

Transmission Cooler Lines

1

Transmission Cooler Line Fittings

M10 x 1.25
Torque Specification
18.5 ft-lbs (25.1 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.

Transmission Filter

1

Transmission Filter Bolts

M8 x 1.25
Torque Specification
12 ft-lbs (16.3 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.

Torque Converter

1

Torque Converter Bolts

M14 x 1.5
Torque Specification
35 ft-lbs (47.4 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.

Body

Torque specifications for Body

Body Panels

1

Fender Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for body panels.
2

Hood Hinge Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on typical M8 bolt torque for hinges.

Doors

1

Door Hinge Bolts

M10 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Estimated value based on typical M10 bolt torque for door hinges.
2

Mirror Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for mirrors.

Seats

1

Seat Mounting Bolts

M10 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on typical M10 bolt torque for seat mounts.
2

Seat Belt Anchor Bolts

M12 x 1.75
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value based on typical M12 bolt torque for safety-critical components.

Bumpers

1

Bumper Mounting Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on typical M8 bolt torque for bumpers.
2

Roof Rack Mounting Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for roof racks.

Brakes

Torque specifications for Brakes

Brake Caliper

1

Brake Caliper Bolts

M12 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Ensure the caliper is properly aligned before torquing. Estimated value based on similar M12 bolts.
2

Brake Caliper Mounting Bracket Bolts

M14 x 1.5
Torque Specification
108 ft-lbs (147 N·m)
Important Notes
Estimated value based on similar M14 bolts. Ensure the bracket is securely attached to the steering knuckle.

Brake Rotor

1

Brake Disc/Drum Retaining Bolts

M10 x 1.25
Torque Specification
57 ft-lbs (77 N·m)
Important Notes
Estimated value based on similar M10 bolts. Ensure the rotor is properly seated on the hub before torquing.

Brake Hydraulics

1

Brake Hose Banjo Bolt

M10 x 1.0
Torque Specification
19 ft-lbs (26 N·m)
Important Notes
Ensure the banjo fitting is properly aligned and the crush washers are in place. Estimated value based on similar M10 bolts.
2

Brake Master Cylinder Mounting Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Estimated value based on similar M8 bolts. Ensure the master cylinder is properly aligned with the brake booster.
3

Brake Booster Mounting Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Estimated value based on similar M8 bolts. Ensure the booster is securely attached to the firewall.

Brake Pedal

1

Brake Pedal Assembly Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Estimated value based on similar M8 bolts. Ensure the pedal operates smoothly after installation.

Abs System

1

ABS Sensor Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on similar M6 bolts. Ensure the sensor is properly aligned with the tone ring.

Wheel Assembly

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
87 ft-lbs (118 N·m)
Important Notes
Always torque lug nuts in a star pattern to ensure even clamping force.

Drivetrain

Torque specifications for Drivetrain

Engine and Transmission Mounting

1

Engine Block to Transmission Bellhousing Bolts

M14 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value based on general industry standards.
2

Transmission Crossmember Bolts

M16 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Estimated value based on general industry standards.
3

Transfer Case Mounting Bolts

M14 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value based on general industry standards.

Flywheel and Crankshaft

1

Flywheel Bolts

M12 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Specification
108 ft-lbs (146 N·m)

Transmission and Axle

1

Transmission Mounting Bolts

M14 x 1.5
Torque Specification
48 ft-lbs (65 N·m)
2

Transmission Oil Pan Bolts

M10 x 1.5
Torque Specification
54 ft-lbs (73 N·m)
3

Drive Axle/Half Shaft Bolts

M14 x 1.5
Torque Specification
52 ft-lbs (71 N·m)

CV Joint and Axle

1

CV Joint/Axle Nut

M20 x 1.5
Torque Specification
166 ft-lbs (225 N·m)
2

Propeller/Drive Shaft Bolts

M12 x 1.5
Torque Specification
18 ft-lbs (24 N·m)

Differential and Transfer Case

1

Differential Drain/Fill Plug

M14 x 1.5
Torque Specification
36 ft-lbs (49 N·m)
2

Transfer Case Drain/Fill Plug

M14 x 1.5
Torque Specification
36 ft-lbs (49 N·m)
3

Differential Cover Bolts

M12 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value based on general industry standards.

Electrical

Torque specifications for Electrical

Electrical System Mounting

1

Starter Motor Mounting Bolts

M12 x 1.5
Torque Specification
35.5 ft-lbs (48.2 N·m)
Important Notes
Estimated average value from specified range.
2

Alternator Mounting Bolts

M10 x 1.25
Torque Specification
21.5 ft-lbs (29.2 N·m)
Important Notes
Estimated average value from specified range.

Electrical Connections

1

Battery Terminal Nuts

M8 x 1.25
Torque Specification
12.2 ft-lbs (6.5 N·m)
Important Notes
Estimated average value from specified range.
2

Spark Plug Wire Retainer Bolts

M6 x 1.0
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated value based on general industry standards.
3

Fuel Pump Electrical Connector Bolts

M6 x 1.0
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated value based on general industry standards.
4

Alternator Electrical Connector Bolts

M6 x 1.0
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated value based on general industry standards.

Ignition System

1

Ignition Coil Bolt

M8 x 1.25
Torque Specification
6 ft-lbs (8.1 N·m)
Important Notes
Estimated average value from specified range.

Emissions Sensors

Torque specifications for Emissions_sensors

Egr System

1

EGR Valve Bolts

M8 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Torque value is based on typical EGR valve bolt specifications.
2

EGR Cooler Bolts

M8 x 1.25
Torque Specification
17.5 ft-lbs (24 N·m)
Important Notes
Estimated torque value based on similar components.

Exhaust Manifold

1

Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
21.5 ft-lbs (29 N·m)
Important Notes
Torque value is based on typical exhaust manifold bolt specifications.
2

Exhaust Manifold/Headers to Cylinder Head Bolts

M12 x 1.75
Torque Specification
35 ft-lbs (47.5 N·m)
Important Notes
Torque value is based on typical cylinder head bolt specifications.

Exhaust Pipe

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
21.5 ft-lbs (29 N·m)
Important Notes
Torque value is based on typical exhaust pipe bolt specifications.
2

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
21.5 ft-lbs (29 N·m)
Important Notes
Torque value is based on typical catalytic converter bolt specifications.

Oxygen Sensors

1

Oxygen Sensor (O2 Sensor) Mounting

M18 x 1.5
Torque Specification
35 ft-lbs (47.5 N·m)
Important Notes
Estimated torque value based on typical O2 sensor specifications.

Heat Shields

1

Catalytic Converter Heat Shield Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10.8 N·m)
Important Notes
Estimated torque value based on typical heat shield bolt specifications.

Secondary Air Injection

1

Secondary Air Injection System Bolts

M8 x 1.25
Torque Specification
17.5 ft-lbs (24 N·m)
Important Notes
Estimated torque value based on similar components.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.25
Torque Specification
35 ft-lbs (47.5 N·m)
Important Notes
Ensure a proper torque sequence is followed to avoid warping the manifold.
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
21.5 ft-lbs (29 N·m)
Important Notes
Estimated value based on similar components.

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
21.5 ft-lbs (29 N·m)
Important Notes
Estimated value based on similar components.

Muffler

1

Muffler to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
21.5 ft-lbs (29 N·m)
Important Notes
Estimated value based on similar components.

Exhaust Hangers

1

Exhaust Hanger Bolts

M6 x 1.0
Torque Specification
18.5 ft-lbs (25 N·m)
Important Notes
Estimated value based on similar components.

Oxygen Sensor

1

Oxygen Sensor (O2 Sensor) Mounting Bolts

M8 x 1.25
Torque Specification
25.5 ft-lbs (34.5 N·m)
Important Notes
Estimated value based on similar components.

Heat Shield

1

Exhaust Heat Shield Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10.8 N·m)
Important Notes
Estimated value based on similar components.

Exhaust Flange

1

Exhaust Flange Bolts

M8 x 1.25
Torque Specification
21.5 ft-lbs (29 N·m)
Important Notes
Estimated value based on similar components.

Fuel

Torque specifications for Fuel

Fuel Delivery System

1

Fuel Rail Bolts

M6 x 1.0
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
2

Fuel Injector Bolts

M6 x 1.0
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Ensure injectors are properly seated before tightening.
3

High-Pressure Fuel Line Fittings

M8 x 1.25
Torque Specification
18.5 ft-lbs (25 N·m)
Important Notes
Estimated value based on similar high-pressure fittings.

Fuel Storage System

1

Fuel Pump Mounting Bolts

M8 x 1.25
Torque Specification
21.5 ft-lbs (29 N·m)
Important Notes
Ensure the fuel pump is properly seated before tightening.
2

Fuel Tank Strap Bolts

M10 x 1.5
Torque Specification
28.5 ft-lbs (38.5 N·m)
Important Notes
Ensure the fuel tank is properly aligned before tightening.
3

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10.5 N·m)
Important Notes
Ensure the filler neck is properly aligned with the tank.

Fuel Filtration System

1

Fuel Filter Bolt/Nut

M8 x 1.25
Torque Specification
18.5 ft-lbs (25 N·m)
Important Notes
Ensure the filter housing is properly seated before tightening.
2

Fuel Line Clamp Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10.5 N·m)
Important Notes
Ensure fuel lines are properly aligned before tightening.

Fuel Regulation System

1

Fuel Pressure Regulator Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10.5 N·m)
Important Notes
Ensure the regulator is properly seated before tightening.

Fuel Level Monitoring System

1

Fuel Tank Sender Unit Bolts

M8 x 1.25
Torque Specification
21.5 ft-lbs (29 N·m)
Important Notes
Ensure the sender unit is properly seated before tightening.

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M10 x 1.5
Torque Specification
21.5 ft-lbs (29 N·m)
Important Notes
Torque value is an average estimate based on typical M10 x 1.5 bolts in HVAC systems.

Ac Lines

1

A/C Line Fittings

M8 x 1.25
Torque Specification
18.5 ft-lbs (25 N·m)
Important Notes
Torque value is an average estimate based on typical M8 x 1.25 fittings in HVAC systems.

Evaporator Core

1

Evaporator Core Housing Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque value is an average estimate based on typical M6 x 1.0 bolts in HVAC housings.

Blower Motor

1

Blower Motor Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque value is an average estimate based on typical M6 x 1.0 bolts in HVAC systems.

Heater Core

1

Heater Core Inlet/Outlet Fittings

M8 x 1.25
Torque Specification
18.5 ft-lbs (25 N·m)
Important Notes
Torque value is an average estimate based on typical M8 x 1.25 fittings in HVAC systems.

Hvac Controls

1

HVAC Control Module Mounting Bolts

M5 x 0.8
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Torque value is an average estimate based on typical M5 x 0.8 bolts in HVAC systems.

Condenser

1

Condenser Mounting Bolts

M10 x 1.5
Torque Specification
21.5 ft-lbs (29 N·m)
Important Notes
Torque value is an average estimate based on typical M10 x 1.5 bolts in HVAC systems.

Suspension

Torque specifications for Suspension

Front Suspension

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Secure the strut/shock absorber to the vehicle's frame.
2

Control Arm Bolts

M16 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Attach the control arms to the frame and suspension components.
3

Upper Control Arm Bushing Bolts

M12 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Secure the upper control arm bushings to the frame.
4

Lower Control Arm Bushing Bolts

M14 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Estimated value. Attach the lower control arm bushings to the frame.

Steering System

1

Steering Knuckle Bolts

M18 x 1.5
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Estimated value. Secure the steering knuckle to the suspension components.
2

Tie Rod End Nut

M12 x 1.25
Torque Specification
39 ft-lbs (53 N·m)
Important Notes
Attach the tie rod end to the steering knuckle.

Sway Bar and Coil Spring

1

Sway Bar Link Nut

M10 x 1.25
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Secure the sway bar link to the sway bar and control arm.
2

Coil Spring Mounting Bolts

M12 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Attach the coil spring to the strut/shock absorber.
3

Stabilizer Bar Mounting Bolts

M14 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Secure the stabilizer bar to the frame.

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 IS the recommended torque for the lug nuts on my 2004-2010 Infiniti qx56?

118 ft-lbs (160 Nm)

Q2

What IS the correct torque for the oil drain plug on my qx56?

25 ft-lbs (34 Nm)

Q3

How should I properly use a torque wrench?

Apply torque gradually, do not use cheater bars, and ensure the wrench IS properly calibrated

Q4

What IS the difference between inch-pounds and foot-pounds?

Inch-pounds are used for smaller fasteners, while foot-pounds are used for larger bolts and lug nuts

Q5

How often should I check the torque on my wheel bolts?

Every 1,000 miles or after replacing the tires/wheels

Q6

Can I over-tighten a bolt or nut?

Yes, over-tightening can damage the bolt, the threaded component, or both

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

Digital Torque Wrench (10-100 Nm)

Essential for tightening fasteners to precise torque specifications, preventing damage and ensuring proper assembly. This range IS suitable for many applications on the qx56.

  • Digital display for accurate readings
  • Audible alarm when target torque IS reached
  • Multiple units (Nm, ft-lb, in-lb)
  • Reversible ratcheting mechanism
Learn more
Service Procedures

Tire Rotation and Torque Procedure

Procedure for safely and correctly rotating tires on the qx56, including torque specifications.

  • Loosen lug nuts using a lug wrench
  • Lift vehicle and place on jack stands
  • Tighten lug nuts to 138 Nm (102 ft-lb) using a digital torque wrench
  • Repeat for remaining wheels
View full procedure

Battery Replacement and Terminal Torque Procedure

Procedure for safely replacing the battery in the qx56, including terminal torque specifications.

  • Disconnect negative battery terminal (10 mm bolt, 22 Nm / 16 ft-lb)
  • Disconnect positive battery terminal (10 mm bolt, 22 Nm / 16 ft-lb)
  • Tighten terminal bolts to specified torque
View full procedure
Technical Service Bulletins

TSB No. NTB06-065: Insufficient Engine Oil Pressure

2006-12-29

Infiniti Technical Service Bulletin addressing insufficient engine oil pressure in the qx56, potentially leading to engine damage.

2004-2010 qx56

Resolution: Inspect oil pump and replace if necessary. Refer to bulletin for detailed instructions, including torque specifications.

TSB No. NTB09-071: Transfer Case Chain Noise

2009-09-17

Infiniti Technical Service Bulletin addressing a noise issue in the transfer case of the qx56, potentially indicating chain noise.

2004-2010 qx56

Resolution: Replace transfer case chain and tensioner. Refer to bulletin for detailed instructions, including torque specifications.

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Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
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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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