Volvo Volvo XC90 2002-2014 Drivetrain Bolt Torque Specifications & Fastener Values
Volvo Volvo XC90 2002-2014

Volvo Volvo XC90 2002-2014 Drivetrain Bolt Torque Specifications

Comprehensive torque specifications for the drivetrain bolts of the 2002-2014 Volvo XC90, including engine, transmission, and axle 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

Engine block and crankshaft

Components that secure the crankshaft and main bearings in the engine block.

1

Main Bearing Bolts

M14 x 1.5
Torque Value
55 ft-lbs (75 N·m)
Important Notes
Proper torque is essential to prevent bearing damage and ensure engine longevity.

Flywheel and crankshaft

Components that attach the flywheel to the crankshaft.

1

Flywheel Bolts

M12 x 1.25
Torque Value
59 ft-lbs (80 N·m)
Important Notes
Proper torque is necessary to prevent the flywheel from coming loose and causing damage to the engine and transmission.

Camshaft and timing system

Components that secure the camshaft sprocket to the camshaft.

1

Camshaft Sprocket Bolt

M10 x 1.0
Torque Value
59 ft-lbs (80 N·m)
Important Notes
Proper torque is essential to prevent the sprocket from coming loose and causing timing belt or chain failure.

Crankshaft pulley and harmonic balancer

Components that attach the crankshaft pulley or harmonic balancer to the crankshaft.

1

Crankshaft Pulley/Harmonic Balancer Bolt

M12 x 1.25
Torque Value
59 ft-lbs (80 N·m)
Important Notes
Proper torque is necessary to prevent the pulley or balancer from coming loose and causing engine damage.

Transmission and mounting

Components that secure the transmission to the engine block or transmission crossmember.

1

Transmission Mounting Bolts

M14 x 1.5
Torque Value
66 ft-lbs (90 N·m)
Important Notes
Proper torque is essential to prevent the transmission from coming loose and causing damage.
2

Engine Block to Transmission Bellhousing Bolts

M12 x 1.25
Torque Value
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Proper torque is necessary to prevent the engine block from coming loose and causing damage.
3

Transmission Crossmember Bolts

M14 x 1.5
Torque Value
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Proper torque is essential to prevent the crossmember from coming loose and causing damage.

Drive axle and half shaft

Components that attach the drive axles or half shafts to the transmission or differential.

1

Drive Axle/Half Shaft Bolts

M14 x 1.5
Torque Value
66 ft-lbs (90 N·m)
Important Notes
Proper torque is necessary to prevent the axles or half shafts from coming loose and causing damage.

Cv joint and axle shaft

Components that secure the CV joint to the axle shaft.

1

CV Joint/Axle Nut

M20 x 1.5
Torque Value
148 ft-lbs (200 N·m)
Important Notes
Proper torque is essential to prevent the CV joint from coming loose and causing damage.

Propeller/drive shaft

Components that attach the propeller shaft or drive shaft to the transmission or differential.

1

Propeller/Drive Shaft Bolts

M12 x 1.25
Torque Value
36 ft-lbs (50 N·m)
Important Notes
Proper torque is necessary to prevent the shaft from coming loose and causing damage.

Differential and transfer case

Components that secure the differential cover and transfer case.

1

Differential Drain/Fill Plug

M12 x 1.25
Torque Value
36 ft-lbs (50 N·m)
Important Notes
Proper torque is necessary to prevent the plug from coming loose and causing fluid leaks.
2

Transfer Case Drain/Fill Plug

M10 x 1.0
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Proper torque is necessary to prevent the plug from coming loose and causing fluid leaks.
3

Differential Cover Bolts

M10 x 1.0
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Estimated value. Proper torque is necessary to prevent the cover from coming loose and causing damage.
4

Transfer Case Mounting Bolts

M12 x 1.25
Torque Value
35 ft-lbs (48 N·m)
Important Notes
Estimated value. Proper torque is essential to prevent the transfer case from coming loose and causing damage.

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 torque specification for the driveshaft bolts on a 2002-2014 Volvo XC90?

The torque specification for the driveshaft bolts on a 2002-2014 Volvo XC90 is typically 35 Nm (26 lb-ft) for the front driveshaft and 50 Nm (37 lb-ft) for the rear driveshaft. Always refer to the vehicle's service manual for precise values.

Q2

How often should I check the torque on drivetrain components?

It is recommended to check the torque on drivetrain components, such as driveshaft bolts and axle nuts, during routine maintenance (every 15,000-20,000 miles) or after any repairs involving these components. Loose bolts can lead to drivetrain noise, vibration, or failure.

Q3

Can I reuse drivetrain bolts after removal?

Drivetrain bolts, particularly those subjected to high stress (like axle bolts), should not be reused as they may lose their tensile strength. Always replace them with new, OEM-specified bolts to ensure proper torque 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 for applying specific torque values to bolts

  • Adjustable torque settings
  • Calibration certification
Learn more

Socket Set

A set of sockets compatible with drivetrain bolt sizes

  • Metric sizes
  • Durable construction
Learn more

Thread Locking Compound

A compound to secure bolts and prevent loosening

  • High-strength formula
  • Heat-resistant
Learn more
Service Procedures

Drivetrain Bolt Torque Specification Application

Procedure for applying correct torque specifications to drivetrain bolts

  • Consult the vehicle's service manual for specific torque values
  • Clean and inspect the bolts and threads for damage
  • Apply thread locking compound if specified
  • Use a torque wrench to tighten bolts to the specified torque value
  • Double-check torque values after installation
View full procedure

Replacing Drivetrain Assembly

Procedure for replacing the drivetrain assembly and ensuring proper bolt torque

  • Remove the old drivetrain assembly following manufacturer guidelines
  • Inspect mounting points for wear or damage
  • Install new drivetrain assembly and hand-tighten bolts
  • Use a torque wrench to tighten bolts to specified torque values
  • Verify alignment and test-drive the vehicle
View full procedure
Technical Service Bulletins

Drivetrain Bolt Tightening Issue

2010-05-15

Bulletin addressing reports of drivetrain bolts loosening over time

2002-2010 Volvo XC90

Resolution: Apply thread locking compound and retorque bolts to specified values

Drivetrain Noise and Vibration

2012-08-22

Bulletin addressing noise and vibration issues related to improper bolt torque

2002-2014 Volvo XC90

Resolution: Inspect drivetrain bolts and retorque to manufacturer specifications

About the Author

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Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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