Acura RL 2005-2012 H5 Transmission Transmission Torque Specifications & Bolt Torque Values
Acura RL 2005-2012

Acura RL 2005-2012 H5 Transmission Torque Specifications

Detailed torque specifications for all bolts related to the H5 automatic transmission used in the 2005-2012 Acura RL, including transmission case, bellhousing, and 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

H5-transmission Mounting

Torque specifications for mounting the H5 transmission to the engine and chassis.

1

Transmission Mounting Bolts

M12 x 1.25
Torque Value
40 ft-lbs (54 N·m)
Important Notes
Tighten bolts in a cross pattern to ensure even pressure.
2

Transmission Mount Bracket Bolts (to transmission)

M10 x 1.5
Torque Value
40 ft-lbs (54 N·m)
Important Notes
These bolts secure the mount bracket to the transmission case. Ensure proper alignment before tightening.

H5-transmission Case

Torque specifications for the transmission case and related components.

1

Transmission Case Bolts

M8 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Tighten bolts in a cross pattern to ensure even clamping of the case halves. Estimated value.
2

Differential Cover Bolts

M8 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Tighten bolts in a cross pattern to ensure even sealing. Estimated Value.

H5-transmission Bellhousing

Torque specifications for the bellhousing and related components.

1

Transmission Bellhousing Bolts (to engine block)

M12 x 1.25
Torque Value
47 ft-lbs (64 N·m)
Important Notes
Tighten bolts in a cross pattern. Estimated value.
2

Torque Converter Bolts (to flywheel)

M10 x 1.25
Torque Value
29 ft-lbs (39 N·m)
Important Notes
Tighten bolts in a star pattern. Ensure torque converter is fully seated before tightening. Estimated value.

H5-transmission External

Torque specifications for external components on the H5 transmission.

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Tighten bolts in a cross pattern to ensure even seal compression.
2

Transmission Fluid Cooler Line Fittings

M16 x 1.5
Torque Value
16 ft-lbs (22 N·m)
Important Notes
Ensure no cross-threading. Estimated Value.
3

Shift Cable Bracket Bolts

M8 x 1.25
Torque Value
16 ft-lbs (22 N·m)
Important Notes
Ensure the shift cable bracket is properly positioned before tightening.
4

Range Switch Bolts

M6 x 1.0
Torque Value
11 ft-lbs (15 N·m)
Important Notes
Do not over-tighten, as it can damage the sensor. Estimated Value.

H5-transmission Drivetrain

Torque specifications for drivetrain components related to the H5 transmission.

1

Drive Axle/Half Shaft Bolts

M10 x 1.25
Torque Value
47 ft-lbs (64 N·m)
Important Notes
Tighten bolts in a cross pattern to ensure even pressure on the flange.

H5-transmission Fluid Service

Torque specifications for fluid service points on the H5 transmission.

1

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Value
36 ft-lbs (49 N·m)
Important Notes
Use a new sealing washer on installation. Do not over-tighten.
2

Transmission Fluid Drain/Fill Plug

M18 x 1.5
Torque Value
29 ft-lbs (39 N·m)
Important Notes
Use a new sealing washer on installation. 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 are accurate torque specifications important for H5 transmission bolts?

Accurate torque specifications are crucial to ensure proper clamping force between components, preventing loosening due to vibration and heat cycles. Over-tightening can damage threads or distort components, leading to leaks or failures, while under-tightening can result in looseness and ultimately, component separation. For example, overtightening the transmission pan bolts can warp the pan and cause leaks.

Q2

What happens if I don't use a torque wrench?

Using a torque wrench ensures consistent and accurate tightening. If you rely on 'feel,' you risk either under-torquing or over-torquing the bolts. Under-torqued bolts can vibrate loose over time, leading to leaks or even component failure. Over-torquing can easily damage threads, strip bolt heads, or crack the transmission casing itself. Without a torque wrench, you're relying on guess-work which increases the potential for damage. An example would be stripping the bolt for the transmission cooler lines.

Q3

Do I need to use new bolts when reassembling the H5 transmission?

While not strictly required in every instance, it's generally recommended to replace any bolts that have been stretched or exhibit signs of damage, especially those holding critical components like the valve body. Reusing bolts that have yielded from previous over-torquing can lead to premature failure. Consider the bolt's condition carefully and refer to your service manual if in doubt. For example, consider replacing your bell housing bolts to ensure proper torque is achieved after a major service.

Q4

Are there different torque specs for different transmission bolt types?

Yes, different bolts often have different torque specifications, depending on their size, material, and location. For example, larger case bolts will typically have a higher torque specification than small sensor bolts. Always consult the specific torque specifications listed in the Acura service manual for the 2005-2012 RL with the H5 transmission. Ignoring these specific specs could damage the component.

Q5

Should I apply threadlocker to H5 transmission bolts?

Generally, unless specifically specified in the Acura service manual for the 2005-2012 RL, threadlocker is not necessary for most H5 transmission bolts. However, in some cases where bolts are subject to high vibration, a light or medium strength threadlocker *may* be recommended in the service manual but not universally required. Check your service manual first. An example might be the flywheel bolts.

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 achieving accurate bolt torques, preventing over or under-tightening.

  • Measures torque in ft-lbs or Nm
  • Click-type or digital readout
  • Range encompassing specified torque values
Learn more

Torque Wrench (3/8 inch drive)

A smaller torque wrench for bolts that don't require as much torque

  • Measures torque in ft-lbs or Nm
  • Click-type or digital readout
  • Range encompassing specified torque values
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets, including various sizes relevant to transmission bolts.

  • Various sizes from 8mm to 19mm
  • 6-point design for secure grip
  • Standard and deep well options
Learn more

Extension Bars (Various lengths)

Used to reach bolts that are in hard to reach areas of the vehicle.

  • 3/8 inch and 1/2 inch drive options
  • Variety of lengths such as 3 inch, 6 inch and 10 inch
  • Durable construction for reliability
Learn more

Universal Joint Adapter

Allows sockets to be used at an angle, useful for accessing tight spots on the transmission.

  • 3/8 inch and 1/2 inch drive options
  • Durable construction for reliability
  • Allows access to angled bolts
Learn more
Service Procedures

H5 Transmission Bolt Torque Procedure

This procedure outlines the correct torque settings and steps for tightening bolts on the Acura RL H5 transmission.

  • Identify the specific bolt location and size using a service manual or online resources.
  • Clean the threads of bolts and tapped holes to remove any debris.
  • Hand-tighten each bolt initially, ensuring proper alignment.
  • Using the correct size socket, set the torque wrench to the specified torque value for the identified bolt.
  • Tighten the bolt to the specified torque value, using a smooth, continuous motion until the torque wrench clicks or beeps.
  • Repeat for all bolts, following any specified sequence.
  • Double check the torque values for each bolt for verification.
View full procedure

H5 Transmission Fluid Drain Plug Torque Procedure

This procedure outlines the correct torque settings and steps for tightening the drain plug on the Acura RL H5 transmission.

  • Clean the threads of the drain plug and the drain hole on the transmission case.
  • Replace the washer on the drain plug if needed.
  • Hand-tighten the drain plug.
  • Using the correct size socket, set the torque wrench to the specified torque value for the drain plug.
  • Tighten the drain plug to the specified torque value, using a smooth, continuous motion until the torque wrench clicks or beeps.
View full procedure
Technical Service Bulletins

H5 Transmission Case Bolt Torque Specification Clarification

2007-03-15

Clarification on torque specifications for H5 transmission case bolts, specifically addressing discrepancies found in earlier documentation.

2005-2008 Acura RL

Resolution: Torque bolts to 47 Nm (35 lb-ft) following a star pattern and recheck after 5 minutes.

Updated Torque Specs for Transmission Mount Bolts

2009-11-20

Revision to the torque specification for bolts securing the transmission mounts to the frame and transmission.

2005-2012 Acura RL

Resolution: Torque bolts securing transmission to the frame to 64 Nm (47 lb-ft). Torque bolts securing the transmission mount to the transmission to 80Nm (59 lb-ft).

H5 Transmission Fluid Drain Plug Washer Replacement

2011-06-02

Information on proper usage and required replacement of the transmission fluid drain plug sealing washer.

2005-2012 Acura RL

Resolution: Always replace the sealing washer on the drain plug whenever the plug is removed. Torque to 49Nm (36 lb-ft)

About the Author

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Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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