Volvo Volvo C70 2006-2013 Drivetrain Bolt Torque Specifications & Fastener Values
Volvo Volvo C70 2006-2013

Volvo Volvo C70 2006-2013 Drivetrain Bolt Torque Specifications

Detailed torque specifications for the drivetrain components of the 2006-2013 Volvo C70, including axle bolts, driveshaft bolts, and transmission mounting 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 To Transmission

Components that connect the engine to the transmission, ensuring proper power transfer and alignment.

1

Flywheel Bolts

M10 x 1.25
Torque Value
65 ft-lbs (88 N·m)
Important Notes
Ensure bolts are tightened in a star pattern to prevent warping.
2

Transmission Bellhousing Bolts

M10 x 1.5
Torque Value
55 ft-lbs (75 N·m)
Important Notes
Estimated value based on similar bolt sizes and applications.

Transmission

Components related to the transmission, including mounting, fluid management, and output connections.

1

Transmission Mounting Bolts

M10 x 1.5
Torque Value
55 ft-lbs (75 N·m)
Important Notes
Ensure transmission is properly aligned before tightening.
2

Transmission Oil Pan Bolts

M6 x 1.0
Torque Value
5.9 ft-lbs (8 N·m)
Important Notes
Use a crisscross pattern to ensure even sealing.
3

Transmission Drain and Fill Plugs

M12 x 1.5
Torque Value
32 ft-lbs (43 N·m)
Important Notes
Replace sealing washers to prevent leaks.
4

Transmission Output Shaft Flange Bolts

M10 x 1.25
Torque Value
70 ft-lbs (95 N·m)
Important Notes
Estimated value based on similar bolt sizes and applications.

Drive Axles

Components that transfer power from the transmission or differential to the wheels.

1

Drive Axle/Half Shaft Bolts

M12 x 1.5
Torque Value
70 ft-lbs (95 N·m)
Important Notes
Ensure proper alignment before tightening.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Value
170 ft-lbs (230 N·m)
Important Notes
Use a new axle nut and stake it after tightening.

Propeller Shaft

Components that transfer power from the transmission to the differential in rear-wheel or all-wheel-drive configurations.

1

Propeller/Drive Shaft Bolts

M10 x 1.25
Torque Value
70 ft-lbs (95 N·m)
Important Notes
Ensure proper alignment before tightening.

Differential

Components related to the differential, including mounting and fluid management.

1

Differential Mounting Bolts

M10 x 1.5
Torque Value
55 ft-lbs (75 N·m)
Important Notes
Estimated value based on similar bolt sizes and applications.
2

Differential Drain/Fill Plug

M12 x 1.5
Torque Value
33 ft-lbs (45 N·m)
Important Notes
Replace sealing washers to prevent leaks.

Transfer Case

Components related to the transfer case, including mounting and fluid management.

1

Transfer Case Mounting Bolts

M10 x 1.5
Torque Value
55 ft-lbs (75 N·m)
Important Notes
Estimated value based on similar bolt sizes and applications.
2

Transfer Case Drain/Fill Plug

M12 x 1.5
Torque Value
33 ft-lbs (45 N·m)
Important Notes
Replace sealing washers to prevent leaks.

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 2006-2013 Volvo C70?

The torque specification for the driveshaft bolts on a 2006-2013 Volvo C70 is typically 35 Nm (26 lb-ft). However, always refer to the vehicle's service manual or manufacturer guidelines for the exact specifications, as variations may exist depending on the specific model year or drivetrain configuration.

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 or after any work involving the drivetrain. For example, after replacing a CV joint or performing suspension work, recheck the torque to ensure all components are securely fastened.

Q3

Can I reuse drivetrain bolts, or should they be replaced?

Drivetrain bolts, such as those for the driveshaft or axle, are often designed for single use due to the high stress they endure. Reusing them can lead to failure or loosening over time. Always consult the service manual to determine if a bolt is reusable or if it should be replaced with a new one.

Q4

What happens if drivetrain bolts are over-torqued?

Over-torquing drivetrain bolts can lead to thread stripping, bolt stretching, or component damage. For example, over-tightening a driveshaft bolt can cause the bolt to fail under stress, potentially leading to drivetrain vibration or even a loss of power transmission.

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 to bolts.

  • Adjustable torque settings
  • Accurate torque measurement
Learn more

Socket Set

A set of sockets for various bolt sizes.

  • Multiple socket sizes
  • Durable construction
Learn more

Thread Locker

A chemical compound to secure bolts in place.

  • Prevents loosening
  • High-strength formula
Learn more
Service Procedures

Drivetrain Bolt Torque Specifications

Detailed steps to apply proper torque to drivetrain bolts.

  • Locate the drivetrain bolts requiring torque.
  • Clean the bolt threads and apply thread locker if necessary.
  • Set the torque wrench to the specified torque value.
  • Tighten the bolts in a crisscross pattern to ensure even pressure.
  • Verify the torque settings with a second pass if required.
View full procedure
Technical Service Bulletins

Drivetrain Bolt Loosening Issue

2012-05-15

Reports of drivetrain bolts loosening over time.

2006-2013 Volvo C70

Resolution: Apply thread locker and retorque bolts to the specified settings.

Incorrect Torque Application

2011-08-22

Incorrect torque application leading to drivetrain issues.

2006-2013 Volvo C70

Resolution: Follow the manufacturer's torque specifications and use a calibrated torque wrench.

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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