Acura TL 2009-2014 H6 Transmission Transmission Torque Specifications & Bolt Torque Values
Acura TL 2009-2014

Acura TL 2009-2014 H6 Transmission Torque Specifications

Detailed torque specifications for all transmission bolts on the 2009-2014 Acura TL, including bellhousing, case, and pan 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

Transmission Mounting

Torque specifications for mounting the transmission to the engine and chassis.

1

Transmission Mounting Bolts

M12 x 1.25 (Estimated)
Torque Value
40 ft-lbs (54 N·m)
Important Notes
Tighten bolts in a criss-cross pattern. Bolt size is estimated, refer to manual for precise size.

Transmission Case

Torque specifications for the transmission case and internal components.

1

Transmission Case Bolts

M8 x 1.25 (Typical)
Torque Value
28 ft-lbs (38 N·m)
Important Notes
Tighten case bolts in a specific sequence, starting with the center bolts. Torque value is estimated; varies with bolt size and location. Refer to manual for correct sequence and specific values.
2

Transmission Case Bolts (Larger)

M10 x 1.5 (Typical)
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Tighten larger case bolts in a specific sequence. Torque value is estimated; varies with bolt size and location. Refer to manual for correct sequence and specific values.

Transmission Oil Pan

Torque specifications for the transmission oil pan.

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Tighten bolts in a criss-cross pattern. Ensure a new gasket is installed.

Transmission Plugs

Torque specifications for the transmission drain and fill plugs.

1

Transmission Drain and Fill Plugs

Specific to plug
Torque Value
36 ft-lbs (49 N·m)
Important Notes
Use new crush washers or O-rings. Do not over-tighten.

Drive Axle

Torque specifications for the drive axles and related components.

1

Drive Axle/Half Shaft Bolts

M10 x 1.25 (Estimated)
Torque Value
47 ft-lbs (64 N·m)
Important Notes
Tighten in a star pattern. Bolt size is estimated, verify with the manual.
2

CV Joint/Axle Nut

Specific to application
Torque Value
181 ft-lbs (245 N·m)
Important Notes
Use new nut and cotter pin if applicable. Ensure correct preload.

Torque Converter

Torque specifications for the torque converter bolts.

1

Torque Converter Bolts

M10 x 1.25 (Estimated)
Torque Value
17 ft-lbs (23 N·m)
Important Notes
Tighten in a star pattern. Bolt size is estimated, verify with manual.
2

Torque Converter Bolts (Alternate)

M10 x 1.25 (Estimated)
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Tighten in a star pattern. Bolt size is estimated, verify with manual.

Transmission Sensors

Torque specifications for various transmission sensors.

1

Transmission Range Sensor/Switch Mounting Bolts

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Do not over-tighten. Ensure proper sensor alignment.
2

Input Shaft Speed Sensor Mounting Bolt

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Do not over-tighten. Ensure proper sensor alignment.
3

Output Shaft Speed Sensor Mounting Bolt

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Do not over-tighten. Ensure proper sensor alignment.

Transmission Valve Body

Torque specifications for the transmission valve body and solenoid pack.

1

Solenoid Pack Mounting Bolts

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Do not over-tighten. Tighten evenly. Ensure proper alignment.
2

Valve Body Mounting Bolts

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to prevent warping. Do not over-tighten.
3

Valve Body Mounting Bolts (Alternate)

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to prevent warping. Do not over-tighten.

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

Why is using the correct torque specification so important?

Using the correct torque specification is crucial to ensure proper clamping force, which prevents bolts from loosening over time due to vibration and thermal expansion. Under-torquing can cause bolts to loosen, leading to leaks, component failure, or even complete detachment. Over-torquing can stretch or weaken bolts, leading to failure and potentially damaging the transmission case or other mating components. Imagine if the transmission mount bolts were under-torqued: the transmission could shift excessively, causing damage to other drivetrain components. Conversely, over-torquing can strip threads or break bolts, necessitating costly repairs.

Q2

What type of lubricant should I use on the transmission bolts?

Generally, Honda/Acura recommends using a light coating of engine oil on the threads of transmission bolts unless otherwise specified. However, it's always best to refer to the specific service manual for your vehicle. Some bolts, such as those going into aluminum, may require anti-seize compound to prevent galling or corrosion, particularly in areas with high salt exposure. Never use thread locker (such as Loctite) unless explicitly stated in the service manual for specific bolts, as it can affect the achieved torque.

Q3

Do I need to replace the transmission bolts every time I remove them?

While not always mandatory, it's highly recommended to replace critical bolts, especially those securing transmission components, whenever they are removed. Bolts can stretch slightly each time they are torqued, leading to reduced clamping force and potential failure with reuse. It's a small cost compared to the potential cost of transmission damage from bolt failure. For example, the bolts holding the transmission pan should always be replaced, along with a new gasket, to ensure a proper seal and prevent leaks.

Q4

Should I re-torque the bolts after the initial torque?

Typically, re-torquing bolts after the initial torque is only required if explicitly mentioned in the service manual. Some components, particularly those with gaskets, may require a re-torque after a heat cycle (such as after driving for a short distance). However, for most of the h6-transmission case bolts, following the initial torque specification is adequate. If you are working on a newly installed transmission, double-check the manual for specific procedures. However, always consult the specific service manual to be sure.

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 (1/2 inch drive)

A calibrated torque wrench is essential for accurately tightening bolts to the specified torque. 1/2 inch drive is recommended for most transmission bolts.

  • Wide torque range (20-150 ft-lbs)
  • Click-type mechanism
  • Clear and easy-to-read scale
Learn more

Torque Wrench (3/8 inch drive)

A smaller torque wrench for bolts with a lower torque specification and tighter spaces.

  • Torque Range (5-80 ft-lbs)
  • Compact size for easier access
  • Click-type mechanism
Learn more

Socket Set (Metric)

A complete set of metric sockets in various sizes is needed to fit all transmission bolts.

  • 10mm to 19mm sockets, with deep and shallow variations
  • 6-point sockets for better grip
  • Durable construction
Learn more

Extensions and Swivels

Extensions and swivels facilitate access to difficult-to-reach bolts within the transmission assembly.

  • Various lengths (3 inch, 6 inch, 10 inch)
  • Universal joint swivel
  • Sturdy construction
Learn more
Service Procedures

H6 Transmission Bolt Torque Procedure

This procedure outlines the correct steps for torquing bolts on the h6 transmission of a 2009-2014 Acura TL. Always refer to the service manual for specific bolt locations and patterns.

  • 1. Identify the specific bolt and its location on the transmission housing.
  • 2. Refer to the Acura service manual for the correct torque specification for that bolt. Note that different bolts have different torque values.
  • 3. Select the appropriate socket and attach it securely to the torque wrench.
  • 4. Position the socket onto the bolt head making sure the socket is fully engaged.
  • 5. Set the torque wrench to the specified torque value.
  • 6. Apply smooth and steady pressure to the torque wrench until it clicks. Avoid jerky movements.
  • 7. Verify the torque with the wrench one more time (optional but recommended).
  • 8. Repeat the process for each bolt following the recommended tightening sequence, if applicable.
View full procedure

Inspection of Bolt Threads

Before installing any bolt, inspect its threads for damage or debris.

  • 1. Visually inspect each bolt for stripped or damaged threads.
  • 2. Clean any debris from the bolt threads with a wire brush or compressed air.
  • 3. If threads are damaged, replace the bolt before installation.
  • 4. Lightly lubricate threads with an anti-seize compound (optional) for easy torque and removal in the future.
View full procedure
Technical Service Bulletins

Transmission Bolt Retorque Recommendation

2011-05-15

A small number of transmission cases experienced bolt loosening after initial assembly, resulting in potential leaks. Retorquing is recommended for all affected units.

2009-2011 Acura TL with h6 transmission

Resolution: Retorque all housing bolts to the factory specified torque using the proper pattern and sequence according to the service manual. Inspect for any leaks after retorqueing.

H6 Transmission Bolt Material Update

2013-11-20

An updated bolt material has been implemented for improved strength and corrosion resistance on the transmission housing.

2012-2014 Acura TL with h6 transmission

Resolution: When replacing transmission housing bolts, use the updated bolt part numbers. Do not mix old and new bolts. Always torque bolts to spec using a calibrated torque wrench.

About the Author

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Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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