Acura TSX 2004-2008 H5 Transmission Torque Specifications
Detailed torque specifications for all bolts on the H5 manual transmission found in the 2004-2008 Acura TSX, including bellhousing, case, and cover bolts.
Important Information
Safety guidelines and reference information for proper torque application
Safety First
- Always verify torque specifications with your vehicle's factory service manual
- Use properly calibrated torque wrenches
- Replace all torque-to-yield (TTY) bolts - they are single-use only
- When in doubt, consult a professional mechanic
Quick Reference Guide
Quick Reference Guide
Common Torque Patterns
Star Pattern
Used for wheels and other circular bolt patterns
Cross Pattern
Used for gaskets and cover plates
Sequential Pattern
Used for head bolts and other critical components
Common Mistakes to Avoid
Common Mistakes to Avoid
Over-tightening
Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.
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.
Follow the manufacturer's specified torque sequence pattern.
Dirty Threads
Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.
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.
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.
Check if specs are for dry or lubricated threads. Use specified lubricant when required.
Recommended Tools
Recommended Tools
Torque Wrench (1/4" Drive)
Torque Wrench (3/8" Drive)
Torque Wrench (1/2" Drive)
Angle Gauge
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
Transmission Mounting Bolts
M12 x 1.25Torque Value
Important Notes
2 Transmission Mount Bolts (To Chassis)
M12 x 1.25
Transmission Mount Bolts (To Chassis)
M12 x 1.25Torque Value
Important Notes
H5-transmission Case
Torque specifications for the H5 transmission case components.
1 Transmission Oil Pan Bolts
M6 x 1.0
Transmission Oil Pan Bolts
M6 x 1.0Torque Value
Important Notes
2 Transmission Case Bolts
M8 x 1.25
Transmission Case Bolts
M8 x 1.25Torque Value
Important Notes
H5-transmission Fluid
Torque specifications for H5 transmission fluid drain and fill plugs.
1 Transmission Fluid Drain/Fill Plug
M18 x 1.5
Transmission Fluid Drain/Fill Plug
M18 x 1.5Torque Value
Important Notes
H5-transmission Output
Torque specifications for H5 transmission output shaft and axle components.
1 Drive Axle/Half Shaft Bolts
M10 x 1.25
Drive Axle/Half Shaft Bolts
M10 x 1.25Torque Value
Important Notes
2 Transmission Output Shaft Flange Bolts
M10 x 1.25
Transmission Output Shaft Flange Bolts
M10 x 1.25Torque Value
Important Notes
H5-transmission Shifter
Torque specifications for H5 transmission shifter mechanism mounting bolts.
1 Manual Transmission Shifter Mechanism Mounting Bolts
M8 x 1.25
Manual Transmission Shifter Mechanism Mounting Bolts
M8 x 1.25Torque Value
Important Notes
Troubleshooting Guide
Common issues, diagnostic steps, and prevention guidelines
Common Issues
Bolt stretching, stripped threads, uneven torque patterns
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
Diagnostic Steps
Visual inspection, torque verification, thread assessment
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
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
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
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 it important to use the correct torque specifications when working on my H5 transmission?
Why is it important to use the correct torque specifications when working on my H5 transmission?
Using the correct torque specifications ensures that bolts are tightened enough to provide a secure connection, but not so much that they are stretched or damaged. Overtightening can lead to stripped threads, broken bolts, and component damage, while undertightening can cause parts to loosen and fail. For example, undertightening a bellhousing bolt might cause fluid leaks and allow the transmission to shift out of alignment. Overtightening the flywheel bolts could damage the flywheel itself.
Q2 What happens if I don't have a torque wrench?
What happens if I don't have a torque wrench?
While a torque wrench is highly recommended for accurate tightening, especially for critical components like the transmission, you could use a 'calibrated' hand feel only as an absolute last resort. However, this is very risky as there is no way to know whether the bolt has been torqued correctly. It's recommended to borrow a torque wrench to prevent costly mistakes that would potentially damage transmission components. Always err on the side of caution and use the proper tools.
Q3 Should I use new bolts when reassembling my H5 transmission?
Should I use new bolts when reassembling my H5 transmission?
It's generally recommended to replace any bolt that is stretched or corroded. For certain critical bolts, especially the pressure plate bolts, it is advised to use new bolts anytime they are removed to ensure proper clamping force. Torque to yield bolts which stretch upon tightening should ALWAYS be replaced. Check the service manual for recommendations regarding specific bolt replacement.
Q4 Do the torque specifications change if I use aftermarket parts?
Do the torque specifications change if I use aftermarket parts?
Torque specifications are typically dictated by the bolt and the component being attached, not the specific brand. However, if you are replacing original transmission components such as the bellhousing, always check the new component's documentation first. It's possible that some manufacturers may have slightly different requirements. When in doubt always refer to the OEM specification or the manufacturer of the part.
Environmental Considerations
Temperature, humidity, and seasonal effects on torque specifications
Temperature Effects
Includes: High Heat, Cold Weather, Thermal Cycling
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
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
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 calibrated torque wrench is essential for accurate bolt tightening to specified values. Use a 3/8" or 1/2" drive depending on socket sizes needed.
- Click-type mechanism
- Properly calibrated for accuracy
- Appropriate torque range for transmission bolts
Socket Set
A comprehensive socket set with metric sizes is necessary to fit all bolts used in the transmission housing and mounting.
- Metric sizes
- 6-point sockets for better grip
- Deep sockets for recessed bolts
Extension Bars
Extension bars will aid in reaching bolts in difficult or recessed areas.
- Various lengths for accessibility
- Strong construction
- 3/8" or 1/2" drive depending on torque wrench
Universal Joint
A universal joint helps access bolts at angles.
- 3/8" or 1/2" drive compatible
- Durable construction
- Allows access to difficult angles
Service Procedures
H5 Transmission Case Bolt Tightening
This procedure outlines the steps for tightening the bolts that hold the transmission case halves together.
- Clean all bolt threads and mating surfaces.
- Hand-tighten all transmission case bolts in a star pattern to ensure even pressure.
- Using a calibrated torque wrench, torque all transmission case bolts to 47 N·m (35 lb-ft) in the same star pattern.
- Double-check all bolts to ensure they are tightened to the correct specification.
H5 Transmission Mount Bolt Tightening
This procedure outlines the steps for tightening the bolts that secure the transmission to the vehicle's chassis.
- Clean all bolt threads and mating surfaces.
- Hand-tighten all transmission mount bolts to secure the mount in place.
- Using a calibrated torque wrench, torque the transmission mount bolts to 74 N·m (54 lb-ft).
- Double-check all bolts to ensure they are tightened to the correct specification.
H5 Flywheel Bolt Tightening
This procedure outlines the steps for tightening the bolts that secure the flywheel to the engine.
- Clean all bolt threads and mating surfaces.
- Hand-tighten all flywheel bolts evenly.
- Using a calibrated torque wrench, torque flywheel bolts to 108 N·m (80 lb-ft).
- Tighten bolts in a star pattern.
- Double-check all bolts to ensure they are tightened to the correct specification.
Technical Service Bulletins
Possible Noise/Vibration from Incorrect Transmission Mount Torque
2006-04-15Some 2004-2006 Acura TSX models may experience unusual noise or vibration due to improperly torqued transmission mount bolts. This can occur from age and/or improper service.
Resolution: Inspect transmission mounts for wear. Ensure all transmission mount bolts are torqued to 74 N·m (54 lb-ft) using a calibrated torque wrench.
Transmission Case Leakage
2007-09-20Reports of transmission fluid leakage have surfaced, often due to improper transmission case sealing or improperly tightened case bolts. Re-sealing transmission cases, should be done with all bolts torqued to factory spec.
Resolution: Inspect transmission case for proper sealing. Ensure all transmission case bolts are torqued to 47 N·m (35 lb-ft) using a calibrated torque wrench. Replace gaskets and seals as needed.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.