Volvo Volvo XC90 2015-present Suspension Bolt Torque Specifications & Fastener Values
Volvo Volvo XC90 2015-present

Volvo Volvo XC90 2015-present Suspension Bolt Torque Specifications

Detailed torque specifications for suspension bolts on the 2015-Present Volvo XC90, including front and rear suspension components.

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

Strut Shock Absorber

This subsystem includes components that connect the struts and shock absorbers to the vehicle's chassis and suspension arms. Proper torque ensures stability, damping performance, and alignment.

1

Upper Strut Mount Bolts

M10 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Estimated value based on similar components.
2

Strut/Shock Absorber Mounting Bolts

M12 x 1.5
Torque Value
59 ft-lbs (80 N·m)
Important Notes
Ensure proper alignment before torquing.
3

Lower Shock Mounting Bolts

M12 x 1.5
Torque Value
59 ft-lbs (80 N·m)
Important Notes
Estimated value based on similar components.

Control Arms

This subsystem includes components that connect the wheel hub to the chassis. Proper torque ensures suspension geometry, alignment, and prevents premature wear.

1

Control Arm Bolts

M14 x 1.5
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Use a crisscross pattern for even torque distribution.
2

Ball Joint Nut

M12 x 1.25
Torque Value
63 ft-lbs (86 N·m)
Important Notes
Ensure the ball joint is properly seated before torquing.

Steering

This subsystem includes components that connect the steering rack to the steering knuckle and chassis. Proper torque ensures precise steering response and alignment stability.

1

Tie Rod End Nut

M10 x 1.25
Torque Value
41 ft-lbs (55 N·m)
Important Notes
Ensure the tie rod end is properly seated before torquing.
2

Steering Gear/Rack Bolts

M14 x 1.5
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Use a crisscross pattern for even torque distribution.

Stabilizer Bar

This subsystem includes components that stabilize the chassis by reducing body roll during cornering. Proper torque ensures the sway bar functions effectively and remains secure.

1

Sway Bar Link Nut

M10 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Ensure the sway bar link is properly seated before torquing.

Rear Suspension

This subsystem includes components that connect the rear suspension to the chassis. Proper torque ensures rear suspension stability and alignment.

1

Trailing Arm Bolts

M14 x 1.5
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Use a crisscross pattern for even torque distribution.
2

Track Rod Bolts

M10 x 1.25
Torque Value
41 ft-lbs (55 N·m)
Important Notes
Estimated value based on similar components.

Wheels

This subsystem includes components that secure the wheels to the hubs. Proper torque ensures safe wheel attachment and prevents loosening while driving.

1

Wheel Lug Nuts

M12 x 1.5
Torque Value
103 ft-lbs (140 N·m)
Important Notes
Use a star pattern for even torque distribution.

Subframe

This subsystem includes components that anchor the suspension subframe to the chassis. Proper torque is essential for structural integrity and alignment stability.

1

Subframe Bolts

M14 x 1.5
Torque Value
103 ft-lbs (140 N·m)
Important Notes
Use a crisscross pattern for even torque distribution.

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 suspension bolts on a 2015-Present Volvo XC90?

The torque specifications vary depending on the specific suspension component. For example, the front strut-to-knuckle bolts typically require 90 Nm (66 lb-ft), while the rear shock absorber lower mounting bolts require 120 Nm (89 lb-ft). Always refer to the official Volvo service manual for your specific model year and trim for precise values.

Q2

How often should suspension bolts be checked for proper torque?

Suspension bolts should be checked during routine maintenance, such as tire rotations or suspension inspections, typically every 10,000-15,000 miles. Additionally, after any suspension repair or component replacement, bolts should be re-torqued after driving 50-100 miles to ensure they remain secure.

Q3

Can I reuse suspension bolts after removal?

Volvo recommends replacing suspension bolts after removal, as they are often torque-to-yield (TTY) bolts designed for one-time use. Reusing them can compromise their integrity and lead to failure. Always use new bolts and follow the manufacturer's guidelines.

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 for applying specific torque values to suspension bolts.

  • Adjustable torque settings
  • Calibration certificate included
Learn more

Hex Bit Socket Set

A set of hex bit sockets for accessing suspension bolts in tight spaces.

  • Various sizes included
  • Durable construction
Learn more
Service Procedures

Front Suspension Bolt Torque Application

Detailed steps for applying the correct torque to front suspension bolts.

  • Lift the vehicle and secure it on jack stands.
  • Remove the front wheels to access the suspension bolts.
  • Using a torque wrench, apply the specified torque to each bolt in the correct sequence.
View full procedure

Rear Suspension Bolt Torque Application

Steps to ensure proper torque application on rear suspension components.

  • Lift the rear of the vehicle and secure it safely.
  • Remove any components obstructing access to rear suspension bolts.
  • Use a torque wrench to apply the manufacturer's specified torque values to each bolt.
View full procedure
Technical Service Bulletins

Suspension Bolt Torque Specification Update

2021-05-12

Revised torque specifications for suspension bolts to prevent loosening.

2015-Present Volvo XC90

Resolution: Refer to the updated torque specifications in the service manual and ensure proper application during maintenance.

Suspension Noise Due to Improper Torque

2020-08-20

Reports of suspension noise caused by improperly torqued bolts.

2015-Present Volvo XC90

Resolution: Inspect all suspension bolts for proper torque and re-torque as necessary using the manufacturer's specifications.

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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