Acura ILX 2022-present Suspension Bolt Torque Specifications
Detailed torque specifications for all suspension bolts on the 2022-present Acura ILX. Includes front and rear suspension components.
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
Front Suspension
This subsystem includes all components related to the front suspension, such as struts, control arms, and stabilizer bars. Proper torque ensures alignment, handling, and safety.
1 Front Strut Mount Nuts (Top Mount)
M10 x 1.25
Front Strut Mount Nuts (Top Mount)
M10 x 1.25Torque Value
Important Notes
2 Front Lower Ball Joint Nut
M12 x 1.25
Front Lower Ball Joint Nut
M12 x 1.25Torque Value
Important Notes
3 Front Lower Control Arm Pivot Bolts
M14 x 1.5
Front Lower Control Arm Pivot Bolts
M14 x 1.5Torque Value
Important Notes
4 Front Stabilizer Bar Link Nuts (End Link)
M10 x 1.25
Front Stabilizer Bar Link Nuts (End Link)
M10 x 1.25Torque Value
Important Notes
Rear Suspension
This subsystem includes all components related to the rear suspension, such as shock absorbers, control arms, and stabilizer bars. Proper torque ensures alignment, handling, and safety.
1 Rear Shock Absorber Mounting Nuts (Top Mount)
M10 x 1.25
Rear Shock Absorber Mounting Nuts (Top Mount)
M10 x 1.25Torque Value
Important Notes
2 Rear Lower Control Arm Bolt
M14 x 1.5
Rear Lower Control Arm Bolt
M14 x 1.5Torque Value
Important Notes
3 Rear Hub Carrier Bolts
M14 x 1.5
Rear Hub Carrier Bolts
M14 x 1.5Torque Value
Important Notes
4 Rear Stabilizer Bar Bracket Bolts
M8 x 1.25
Rear Stabilizer Bar Bracket Bolts
M8 x 1.25Torque Value
Important Notes
5 Rear Toe Link Bolts
M14 x 1.5
Rear Toe Link Bolts
M14 x 1.5Torque Value
Important Notes
Wheel Assembly
This subsystem includes components related to the wheel and hub, such as lug nuts. Proper torque is critical for safety and preventing wheel detachment.
1 Wheel Lug Nuts
M12 x 1.5
Wheel Lug Nuts
M12 x 1.5Torque 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 are correct torque specifications important for suspension bolts?
Why are correct torque specifications important for suspension bolts?
Proper torque ensures that bolts are tightened to the correct tension, providing optimal clamping force and preventing loosening due to vibration and stress. Over-tightening can damage bolts or suspension components, while under-tightening can lead to component failure and loss of vehicle control. Imagine a scenario where you under-torque a lower control arm bolt; during cornering, the bolt might loosen, causing the suspension to shift and impacting your ability to steer safely.
Q2 What happens if I over-torque a suspension bolt?
What happens if I over-torque a suspension bolt?
Over-torquing can stretch or weaken the bolt, leading to potential failure. It can also damage the threads in the receiving component, requiring costly repairs. Additionally, over-torquing can distort the component itself, affecting alignment and suspension performance. For example, an over-torqued strut mount bolt might crack the mount housing over time due to the excessive force applied.
Q3 Do I need to use new bolts when working on the suspension?
Do I need to use new bolts when working on the suspension?
It is generally recommended to use new bolts, especially torque-to-yield (TTY) bolts, whenever they are removed. TTY bolts are designed to stretch when torqued and should not be reused. Reusing old bolts can lead to inaccurate torque readings and reduced clamping force. Additionally, old bolts may have corrosion or damage not visible to the naked eye, which can compromise their integrity.
Q4 Should I apply any lubricants to the bolt threads before torquing?
Should I apply any lubricants to the bolt threads before torquing?
Always refer to the Acura service manual for guidance. Typically, most suspension bolts are designed to be torqued dry or with a specific anti-seize lubricant. Applying incorrect lubricants can alter the friction coefficient of the threads, leading to inaccurate torque readings and potentially under or over-tightening. Some bolts require a threadlocker or specific lubricant applied as a thread-locking agent. For example, some strut bolts require a small amount of blue threadlocker.
Q5 How often should I inspect my suspension bolts?
How often should I inspect my suspension bolts?
Suspension bolts should be inspected regularly, especially after off-road driving or impacting a pothole, where more stress is put on the suspension. A good practice is to check the bolts during routine maintenance such as oil changes or tire rotations. If you notice any looseness, noise or visual damage like a corroded bolt, immediately address it by tightening it to spec. A bolt that has been loosened by an impact or worn suspension bushing may become loose, potentially leading to suspension damage or loss of control.
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 accurately tightening suspension bolts to the manufacturer's specified torque. A 1/2" drive is suitable for most suspension components.
- Click-type mechanism for accurate torque setting
- Reversible ratchet head
- Wide torque range (e.g., 20-150 ft-lbs)
Torque Wrench (3/8" Drive)
A smaller 3/8" drive torque wrench is useful for lower torque settings on smaller suspension components.
- Click-type mechanism for accurate torque setting
- Reversible ratchet head
- Lower torque range (e.g., 5-80 ft-lbs or similar)
Socket Set (Metric)
A comprehensive set of metric sockets is needed to fit the various bolts and nuts on the suspension.
- Various sizes covering common bolt head dimensions
- 6-point and 12-point sockets
- Durable construction
Wrench Set (Metric)
A set of metric wrenches can be helpful in cases where a socket cannot be properly used.
- Open-ended and box-ended wrenches
- Various sizes covering common bolt head dimensions
- Durable construction
Service Procedures
Front Strut Installation and Torque Procedure
This procedure outlines the installation and proper torque application for the front strut assembly.
- 1. Position the strut assembly into the wheel well.
- 2. Install the upper strut mount bolts, tightening them by hand initially.
- 3. Install the lower strut mounting bolts. Tighten by hand.
- 4. Refer to torque specifications for the upper and lower strut bolts and tighten using the appropriate torque wrench.
- 5. Recheck torque settings after a short test drive.
Rear Suspension Control Arm Torque Procedure
This procedure describes how to correctly torque the rear suspension control arm bolts.
- 1. Position the control arm and align the mounting holes.
- 2. Install the control arm mounting bolts and nuts.
- 3. Tighten the bolts and nuts hand tight initially.
- 4. Lower the vehicle so that the suspension is loaded, and bring the suspension to ride height.
- 5. Refer to torque specifications and tighten the control arm bolts using the correct torque wrench.
- 6. Recheck torque settings after a short test drive.
Sway Bar End Link Torque Procedure
This procedure describes the proper torque specification for the sway bar end links.
- 1. Position the sway bar end links to the sway bar and mounting points.
- 2. Install the end link bolts and nuts.
- 3. Tighten the bolts and nuts hand tight initially.
- 4. Refer to torque specifications and tighten the bolts to specification using the correct torque wrench.
- 5. Recheck torque settings after a short test drive.
Technical Service Bulletins
Suspension Bolt Re-Torque Recommendation After Wheel Alignment
2023-04-15This bulletin recommends that all suspension fasteners that were loosened or removed during a wheel alignment procedure be re-torqued after the alignment is complete and the suspension is loaded.
Resolution: After completing a wheel alignment, re-torque all affected suspension fasteners to the manufacturer's specifications. If the vehicle has been lowered or modified, re-torque suspension fasteners after driving the vehicle for 20 miles or more.
Front Lower Control Arm Bolt Corrosion
2022-11-20This bulletin addresses a possible corrosion issue found on the front lower control arm bolts on some early production units. Replacement and anti-seize application may be required.
Resolution: Inspect the front lower control arm bolts for signs of corrosion. If present, remove the affected bolts, apply anti-seize, and re-install to the proper torque specification. Replacement may be necessary in more extreme cases.
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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.