Acura CL 1997-1999 Body & Frame Bolt Torque Specifications
Detailed torque specifications for the body bolts of the 1997-1999 Acura CL, including fastener sizes, torque values, and tightening sequences.
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
Body Fuel System
Torque specifications for fuel system components attached to the vehicle body.
1 Fuel Tank Strap Bolts
M10 x 1.25
Fuel Tank Strap Bolts
M10 x 1.25Torque Value
Important Notes
2 Fuel Filler Neck Bolts
M6 x 1.0
Fuel Filler Neck Bolts
M6 x 1.0Torque Value
Important Notes
Body Panels
Torque specifications for body panels and closures such as doors, fenders, and hoods.
1 Door Hinge Bolts
M10 x 1.5
Door Hinge Bolts
M10 x 1.5Torque Value
Important Notes
2 Fender Bolts
M6 x 1.0
Fender Bolts
M6 x 1.0Torque Value
Important Notes
3 Hood Hinge Bolts
M8 x 1.25
Hood Hinge Bolts
M8 x 1.25Torque Value
Important Notes
4 Hood Latch Mounting Bolts
M6 x 1.0
Hood Latch Mounting Bolts
M6 x 1.0Torque Value
Important Notes
Body Exterior
Torque specifications for exterior components like bumpers, lights, and grille.
1 Bumper Mounting Bolts (Front and Rear)
M8 x 1.25
Bumper Mounting Bolts (Front and Rear)
M8 x 1.25Torque Value
Important Notes
2 Headlight/Tailight Mounting Bolts
M5 x 0.8
Headlight/Tailight Mounting Bolts
M5 x 0.8Torque Value
Important Notes
3 Grille Mounting Bolts
M5 x 0.8
Grille Mounting Bolts
M5 x 0.8Torque Value
Important Notes
4 Side Molding/Trim Bolts/Clips
N/A (typically clips)
Side Molding/Trim Bolts/Clips
N/A (typically clips)Torque Value
Important Notes
Body Interior
Torque specifications for interior components such as seats.
1 Seat Mounting Bolts
M10 x 1.25
Seat Mounting Bolts
M10 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 using the correct torque specification important for body bolts?
Why is using the correct torque specification important for body bolts?
Using the correct torque is crucial for several reasons. Under-tightening can cause components to loosen over time, leading to rattles, misalignment, and potential safety issues, like panels shifting or rubbing against tires or other parts. Over-tightening can damage threads, crush mounting points, or even crack surrounding panels, requiring expensive repairs. Correct torque ensures proper clamping force for secure and reliable assembly.
Q2 What tool should I use to tighten body bolts?
What tool should I use to tighten body bolts?
A torque wrench is essential for tightening body bolts to the specified torque. A standard socket set with appropriately sized sockets, along with extensions and universal joints as needed for access, is also required. Avoid using impact wrenches for final tightening, as these often over-torque bolts, and do not use hand-tightening alone as this will never reach the required torque value.
Q3 Do I need to use new bolts when working on the body?
Do I need to use new bolts when working on the body?
While it isn't always required to replace body bolts, it's often a good idea, especially if they show signs of corrosion or damage. A new bolt ensures the threads are undamaged and that proper clamping force is achieved when tightened to the correct torque. Reusing old bolts that have been overtightened or stressed can lead to premature failure and potential problems down the road.
Q4 What if I don't have a torque wrench?
What if I don't have a torque wrench?
While you might be able to install them by hand or with a standard wrench, it is highly discouraged because you can easily under-tighten or over-tighten the bolts. Using a torque wrench ensures you're not causing damage or that parts will not come loose. Auto parts stores often have loaner programs or you can purchase them relatively inexpensively. It is a good investment for auto maintenance.
Q5 What do I do if I strip or damage a body bolt or its threads?
What do I do if I strip or damage a body bolt or its threads?
If a bolt or its threads are stripped or damaged, it should be addressed immediately. A damaged bolt should be replaced with a new one. For stripped threads, you may need to use a thread repair kit (e.g. Heli-Coil) or a slightly larger bolt and nut depending on the location. In more severe cases, professional repair may be necessary, such as welding a new threaded nut to the chassis or replacing a damaged section of the body.
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 torque wrench with a 1/2" drive is essential for accurately tightening body bolts to the specified torque.
- Accurate torque readings
- Wide torque range (typically 20-150 ft-lbs)
Torque Wrench (3/8" Drive)
A torque wrench with a 3/8" drive is essential for accurately tightening smaller body bolts to the specified torque.
- Accurate torque readings
- Wide torque range (typically 5-80 ft-lbs)
Socket Set (Metric)
A metric socket set is required to fit the various bolt head sizes used in the body panels.
- Various sizes (8mm to 19mm)
- 6-point sockets recommended
Socket Extensions
Socket extensions help reach bolts in recessed locations or around other components.
- Various lengths (3", 6", 12")
- Provides additional reach
Service Procedures
Front Bumper Cover Removal and Installation
This procedure outlines the removal and installation process for the front bumper cover, including torque specifications for its mounting bolts.
- Locate and remove all screws and clips securing the bumper cover to the fenders and front fascia.
- Disconnect any electrical connectors (fog lights, turn signals) attached to the bumper cover.
- Carefully pull the bumper cover forward to detach it from the vehicle.
- Align the bumper cover and push it into place, ensuring the mounting points are correctly aligned.
- Install all the bumper mounting bolts by hand first. Then torque them to the specified 8.7 ft-lbs using a 3/8" torque wrench
- Reconnect all electrical connectors.
- Verify that the bumper cover is securely attached and all panels are properly aligned
Rear Bumper Cover Removal and Installation
This procedure outlines the removal and installation process for the rear bumper cover, including torque specifications for its mounting bolts.
- Locate and remove all screws and clips securing the bumper cover to the quarter panels and rear fascia.
- Disconnect any electrical connectors (license plate lights) attached to the bumper cover.
- Carefully pull the bumper cover rearward to detach it from the vehicle.
- Align the bumper cover and push it into place, ensuring the mounting points are correctly aligned.
- Install all the bumper mounting bolts by hand first. Then torque them to the specified 8.7 ft-lbs using a 3/8" torque wrench
- Reconnect all electrical connectors.
- Verify that the bumper cover is securely attached and all panels are properly aligned
Fender Bolt Torque Procedure
This procedure covers the proper method for torquing the fender bolts to ensure the panel is securely fastened.
- Locate all the mounting bolts securing the fender to the vehicle body.
- Install all the fender mounting bolts by hand first, making sure they are threaded correctly.
- Using the proper sized socket, torque all fender bolts to 16 ft-lbs using a 3/8" torque wrench.
- Verify that the fender is properly aligned and securely attached after torque application.
Door Bolt Torque Procedure
This procedure covers the proper method for torquing the door bolts to ensure the door is securely fastened to the hinges.
- Locate all bolts connecting the door to the hinge on the body side
- Loosen all bolts slightly
- Adjust door for proper fitment in the door frame
- Install all the door mounting bolts by hand first, making sure they are threaded correctly.
- Using the proper sized socket, torque all door bolts to 16 ft-lbs using a 3/8" torque wrench.
- Verify that the door is properly aligned and securely attached after torque application and that there is proper latch engagement
Technical Service Bulletins
Body Panel Alignment Issues
1998-05-12This bulletin addresses issues with body panel alignment, specifically concerning improper torque on mounting bolts. Incorrect torque can cause misalignment, panel gaps, and vibrations.
Resolution: Inspect all body panel mounting bolts, ensure proper torque according to the service manual specifications. Use a calibrated torque wrench and follow recommended tightening sequences. Replace any damaged bolts and/or clips that are not holding the panels in alignment.
Bumper Cover Attachment Problems
1999-02-28This bulletin addresses issues with loose or detached bumper covers due to incorrect torque on mounting hardware or damaged retaining clips. This is common after minor impacts and/or improper reassembly.
Resolution: Inspect all bumper mounting points and replace any damaged or missing clips. Torque all bumper cover bolts to the specified 8.7 ft-lbs using a 3/8" torque wrench. Always use a torque wrench and verify the setting to avoid under or overtightening 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.