Acura RLX 2014-2020 Drivetrain Bolt Torque Specifications
This page provides detailed torque specifications for various drivetrain bolts on the 2014-2020 Acura RLX, including engine, transmission, differential, and axle 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
Engine Flywheel
Torque specifications for the flywheel and related components.
1 Flywheel Bolts
M12 x 1.25
Flywheel Bolts
M12 x 1.25Torque Value
Important Notes
Transmission Housing
Torque specifications for the transmission housing and related components.
1 Transmission Mounting Bolts
M12 x 1.75
Transmission Mounting Bolts
M12 x 1.75Torque Value
Important Notes
2 Transmission-to-Engine Bolts
M12 x 1.75
Transmission-to-Engine Bolts
M12 x 1.75Torque Value
Important Notes
3 Input Shaft Bearing Retainer Bolts
M8 x 1.25
Input Shaft Bearing Retainer Bolts
M8 x 1.25Torque Value
Important Notes
4 Output Shaft Bearing Retainer Bolts
M8 x 1.25
Output Shaft Bearing Retainer Bolts
M8 x 1.25Torque Value
Important Notes
5 Transmission Oil Pan Bolts
M6 x 1.0
Transmission Oil Pan Bolts
M6 x 1.0Torque Value
Important Notes
Transmission Fluid
Torque specifications for the transmission fluid system components.
1 Transmission Fluid Drain and Fill Plugs
M18 x 1.5
Transmission Fluid Drain and Fill Plugs
M18 x 1.5Torque Value
Important Notes
2 Automatic Transmission Fluid Cooler Line Bolts
M6 x 1.0
Automatic Transmission Fluid Cooler Line Bolts
M6 x 1.0Torque Value
Important Notes
Drive Axle System
Torque specifications for the drive axle and related components.
1 Drive Axle/Half Shaft Bolts
M10 x 1.5
Drive Axle/Half Shaft Bolts
M10 x 1.5Torque Value
Important Notes
2 CV Joint/Axle Nut
M24 x 1.5
CV Joint/Axle Nut
M24 x 1.5Torque Value
Important Notes
Propeller Shaft
Torque specifications for the propeller/drive shaft and related components.
1 Propeller/Drive Shaft Bolts
M10 x 1.5
Propeller/Drive Shaft Bolts
M10 x 1.5Torque Value
Important Notes
Differential
Torque specifications for the differential and related components.
1 Differential Mounting Bolts
M12 x 1.75
Differential Mounting Bolts
M12 x 1.75Torque Value
Important Notes
2 Differential Drain and Fill Plugs
M18 x 1.5
Differential Drain and Fill Plugs
M18 x 1.5Torque Value
Important Notes
3 Ring Gear Bolts
M12 x 1.5
Ring Gear Bolts
M12 x 1.5Important Notes
Transfer Case
Torque specifications for the transfer case and related components.
1 Transfer Case Drain and Fill Plugs
M18 x 1.5
Transfer Case Drain and Fill Plugs
M18 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 drivetrain bolts?
Why are correct torque specifications important for drivetrain bolts?
Correct torque is crucial for proper clamping force. Under-torquing can lead to loose bolts, causing component failure and potential accidents. Over-torquing can stretch or break bolts, damaging threads and weakening the joint, potentially leading to the same outcome. Imagine driving over a speed bump; loose bolts on your axle could shear, causing loss of control.
Q2 Should I use new bolts when reassembling the drivetrain?
Should I use new bolts when reassembling the drivetrain?
It's highly recommended to use new bolts, especially those that are torque-to-yield (TTY). These bolts are designed to stretch slightly when tightened and should not be reused. Reusing TTY bolts can lead to incorrect clamping force and potential failure. For example, drive shaft bolts are often TTY.
Q3 What if I don't have a torque wrench?
What if I don't have a torque wrench?
Using a torque wrench is essential for precise tightening. Without one, you are relying on guesswork, which can result in either under-tightening (causing looseness and component damage) or over-tightening (risking bolt failure or thread damage). While you can approximate tightness, the risk is not worth it. We strongly recommend purchasing or borrowing a torque wrench from a tool rental service.
Q4 How often should I inspect the torque on my drivetrain bolts?
How often should I inspect the torque on my drivetrain bolts?
Drivetrain bolts should be inspected periodically, particularly after heavy usage or impact. A good interval is every 12 months or 15,000 miles, whichever comes first. Also, always re-check torque specifications after performing any service on drivetrain components. For example, after replacing CV axles, ensure the axle nut and any mounting hardware is torqued according to the specification. Frequent off-road driving or towing will require more frequent checks.
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 the specified torque values on drivetrain bolts. A 1/2" drive is common for the torque range required for these components.
- Click-type mechanism for accurate torque application
- Scales in both lb-ft and Nm
Torque Wrench (3/8" Drive)
A 3/8" drive torque wrench is useful for smaller bolts in the drivetrain system where a 1/2" drive wrench may be too large.
- Click-type mechanism for accurate torque application
- Scales in both lb-ft and Nm
Socket Set (Metric)
A complete set of metric sockets is needed to fit various bolt head sizes in the RLX drivetrain.
- Sizes ranging from 8mm to 22mm
- 6-point and 12-point sockets for versatility
Extension Bars
Extension bars are useful for reaching recessed bolts or those in hard-to-access areas of the drivetrain.
- Various lengths available
- Solid construction for reliable torque transfer
Universal Joint (Swivel Adapter)
A universal joint adapter allows for applying torque at an angle when necessary.
- Durable construction
- Smooth pivoting action
Service Procedures
Driveshaft Bolt Torque Check
This procedure outlines how to check and verify the torque on the driveshaft bolts.
- Locate the driveshaft bolts connecting the driveshaft to the transmission and differential.
- Refer to the torque specification for the bolt size and type.
- Using the correct socket and torque wrench, check the torque on each bolt.
- If any bolt is not within specification, loosen and retighten to the correct torque.
- Visually inspect for any damage to the bolts or driveshaft after torquing.
Differential Mounting Bolt Torque Check
This procedure covers the inspection and torquing of the bolts holding the differential to the chassis.
- Locate the differential mounting bolts.
- Refer to the torque specification for the specific mounting location and bolt size.
- Using the appropriate socket and torque wrench, check the torque on each bolt.
- Adjust torque to specification where necessary.
- Visually inspect bolt heads for any signs of wear or cracking.
Transmission Mounting Bolt Torque Check
This procedure details the steps for checking the torque of transmission mounting bolts.
- Locate the transmission mounting bolts.
- Refer to the specified torque for the mounting bolts.
- Use the appropriate socket and torque wrench to confirm the bolt torque.
- Adjust bolt torque as necessary.
- Visually confirm that the bolt heads and mounting surfaces are in good condition.
Technical Service Bulletins
Driveshaft Bolt Loosening After High-Speed Driving
2017-08-15Some 2014-2017 Acura RLX vehicles may experience driveshaft bolt loosening after extended periods of high-speed driving. This can cause noise and vibration.
Resolution: Inspect and retorque driveshaft bolts to revised specification. Use new bolts if they show signs of wear or stretching.
Differential Mounting Bolt Corrosion
2019-03-202017-2020 Acura RLX models in areas with high road salt usage may experience corrosion on differential mounting bolts. This can cause loosening and potential damage.
Resolution: Inspect differential mounting bolts for corrosion. Replace corroded bolts and apply anti-seize compound before re-installation. Ensure correct torque application.
Transmission Mount Bolt Inspection
2020-01-10Some instances of transmission mount bolts loosening were found on 2014-2016 RLX models, possibly causing vibration and shifting issues
Resolution: Visually inspect transmission mount bolts for looseness or damage, re-torque to the specific value and replace if necessary.
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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.