Acura RSX 2002-2006 H5 Transmission Torque Specifications
Detailed torque specifications for all bolts on the H5 manual transmission found in the 2002-2006 Acura RSX. Includes bellhousing, case, and other critical fasteners.
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 Case
Torque specifications for the main transmission case and related components.
1 Transmission Case Bolts
M10 x 1.25
Transmission Case Bolts
M10 x 1.25Torque Value
Important Notes
H5-transmission Mounting
Torque specifications for mounting the 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 Drive Axle/Half Shaft Bolts
M10 x 1.25
Drive Axle/Half Shaft Bolts
M10 x 1.25Torque Value
Important Notes
H5-transmission Oil Pan
Torque specifications for the transmission oil pan and related components.
1 Transmission Oil Pan Bolts
M6 x 1.0
Transmission Oil Pan Bolts
M6 x 1.0Torque Value
Important Notes
H5-transmission Plugs
Torque specifications for the drain and fill plugs of the transmission.
1 Transmission Drain and Fill Plugs
M18 x 1.5
Transmission Drain and Fill Plugs
M18 x 1.5Torque Value
Important Notes
2 Transmission Fluid Drain/Fill Plug
M18 x 1.5
Transmission Fluid Drain/Fill Plug
M18 x 1.5Torque Value
Important Notes
H5-transmission Shift Linkage
Torque specifications for components related to the shift linkage.
1 Shift Linkage Bolts
M8 x 1.25
Shift Linkage Bolts
M8 x 1.25Torque Value
Important Notes
H5-transmission Sensors
Torque specifications for sensors installed on the transmission.
1 Reverse Light Switch
M10 x 1.25
Reverse Light Switch
M10 x 1.25Torque Value
Important Notes
H5-transmission Input Shaft
Torque specifications for components related to the input shaft.
1 Input Shaft Retainer/Bearing Plate Bolts
M6 x 1.0
Input Shaft Retainer/Bearing Plate Bolts
M6 x 1.0Torque 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 What happens if I over-torque the transmission bolts?
What happens if I over-torque the transmission bolts?
Over-torquing bolts can stretch or weaken them, potentially leading to thread damage in the transmission case or bolt failure. This could result in leaks, misalignment, or even catastrophic failure of the transmission components. It is crucial to use a calibrated torque wrench and adhere to the specified torque values. For example, overtightening the bellhousing bolts can lead to cracks in the case and costly repairs.
Q2 What happens if I under-torque the transmission bolts?
What happens if I under-torque the transmission bolts?
Under-torqued bolts will not provide adequate clamping force and can loosen over time, especially due to vibration. This can lead to leaks, misalignment of components, and increased stress on other bolts. This can cause internal transmission damage and require a complete rebuild. An example is under-torquing the side case bolts which can allow the case to separate and cause gear damage.
Q3 Should I use thread locker on the transmission bolts?
Should I use thread locker on the transmission bolts?
It is not typically required to use thread locker on all transmission bolts. However, certain bolts, such as those on the transmission mount brackets or speed sensor, might benefit from a medium-strength (blue) thread locker to prevent loosening due to vibrations. Always consult the vehicle's service manual for specific recommendations. For example, using loctite on the slave cylinder bolts is good practice to prevent them from backing out
Q4 Do I need to replace bolts when servicing the transmission?
Do I need to replace bolts when servicing the transmission?
It's generally recommended to inspect bolts for damage, stretching, or corrosion when servicing the transmission. While not always required, replacing torque-to-yield (TTY) bolts is a MUST if they are used (consult your manual.) If bolts show any signs of damage or if you are unsure, it is best practice to replace them with new ones to ensure proper clamping and prevent future issues. This is especially true for high-stress bolts, such as the bellhousing bolts.
Q5 Are torque specs different for aluminum and steel transmission components?
Are torque specs different for aluminum and steel transmission components?
Yes, torque specifications can differ significantly between aluminum and steel components. Aluminum is a softer metal and requires lower torque values to prevent stripping threads or damaging the component. Always refer to the service manual for the correct torque specification for each specific bolt location. For instance, case bolts made of aluminum require lower torque specs than the steel engine-to-transmission bolts.
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 (1/2" drive)
A calibrated torque wrench is essential for achieving accurate bolt torque specifications. A 1/2" drive is recommended for the torque ranges required for transmission bolts.
- Accurate torque measurement
- Durable construction
Torque Wrench (3/8" drive)
A calibrated 3/8" drive torque wrench is useful for smaller bolts with lower torque specifications.
- Accurate torque measurement
- Durable construction
Socket Set (Metric)
A comprehensive metric socket set, including sizes typically used on the H5 transmission (e.g. 10mm, 12mm, 14mm, 17mm, 19mm)
- Variety of sizes
- Durable construction
Extension Bars
Various length extension bars to reach difficult bolts and nuts.
- Various lengths
- Durable construction
Universal Joint
A universal joint is helpful when working at angles or with obstructed access to the bolt head.
- Allows sockets to turn at an angle
- Durable Construction
Service Procedures
Transmission Case Bolt Torque Procedure
Torque procedure for the bolts holding the transmission case halves together.
- Inspect all bolts for damage or wear. Replace if necessary.
- Clean the threads of all bolts and bolt holes using a wire brush or thread chaser.
- Apply a light coating of anti-seize to the threads of each bolt.
- Install all bolts and hand tighten them evenly in a star pattern.
- Using a 3/8" drive torque wrench, tighten the M8 bolts to 22 Nm (16 lb-ft) in a star pattern.
- Using a 1/2" drive torque wrench, tighten the M10 bolts to 44 Nm (33 lb-ft) in a star pattern.
- Double-check all bolt torques after assembly.
Transmission Mount Bolt Torque Procedure
Torque procedure for the bolts securing the transmission mount to the vehicle chassis and transmission.
- Inspect all bolts for damage or wear. Replace if necessary.
- Clean the threads of all bolts and bolt holes.
- Apply a light coating of anti-seize to the threads of each bolt.
- Install all transmission mount bolts and hand tighten them evenly.
- Using a 1/2" drive torque wrench, tighten the transmission mount bolts to 65 Nm (48 lb-ft).
- Double-check all bolt torques after assembly.
Starter Mounting Bolt Torque Procedure
Torque procedure for the bolts securing the starter to the transmission.
- Inspect all bolts for damage or wear. Replace if necessary.
- Clean the threads of all bolts and bolt holes.
- Apply a light coating of anti-seize to the threads of each bolt.
- Install all starter mounting bolts and hand tighten them evenly.
- Using a 1/2" drive torque wrench, tighten the starter mounting bolts to 44 Nm (33 lb-ft).
- Double-check all bolt torques after assembly.
Technical Service Bulletins
H5 Transmission Case Bolt Loosening
2004-03-15Reports of some H5 transmission case bolts loosening over time. This can lead to fluid leaks and unusual noise.
Resolution: Inspect and re-torque all transmission case bolts to the specified torque. Consider using new bolts and thread-locking compound on reassembly for added security.
Transmission Mount Bolt Wear
2005-11-20Transmission mount bolts may experience wear due to engine vibration. This can lead to a clunking noise during acceleration and deceleration.
Resolution: Inspect transmission mount bolts for signs of wear or elongation. Replace if necessary. Re-torque the bolts to the specified value. Consider using new bolts.
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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.