Acura MDX 2014-2020 Brake System Bolt Torque Specifications & Fastener Values
Acura MDX 2014-2020

Acura MDX 2014-2020 Brake System Bolt Torque Specifications

Detailed torque specifications for all brake-related bolts on the 2014-2020 Acura MDX, including caliper bolts, rotor bolts, and brake line fittings.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

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.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

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.

Prevention:

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.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

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

Brake Calipers

Torque specifications for brake caliper and related components.

1

Brake Caliper Bolts

M10 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
These bolts secure the brake caliper to the mounting bracket. Ensure proper alignment before torquing. Always use a calibrated torque wrench.
2

Brake Hose Banjo Bolt

M10 x 1.0
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Secures the brake hose to the caliper. Use new sealing washers and ensure proper alignment to avoid leaks.
3

Brake Bleeder Valve

M7 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Tighten the bleeder valve to the specified torque to ensure a proper seal without damaging the valve. Do not over-tighten.

Brake Mounting Brackets

Torque specifications for brake caliper mounting brackets and related components.

1

Brake Caliper Mounting Bracket Bolts

M12 x 1.25
Torque Value
79 ft-lbs (107 N·m)
Important Notes
These bolts secure the caliper mounting bracket to the steering knuckle. Ensure proper seating of the bracket before tightening. Always use a calibrated torque wrench.

Brake Rotors

Torque specifications for brake rotors and related components.

1

Brake Disc/Drum Retaining Bolts

M6 x 1.0
Torque Value
16 ft-lbs (22 N·m)
Important Notes
These bolts retain the rotor or drum to the hub during assembly. Do not overtighten.

Wheel Mounting

Torque specifications for wheel mounting components.

1

Wheel Lug Nuts

M14 x 1.5
Torque Value
80 ft-lbs (108 N·m)
Important Notes
Tighten the lug nuts in a star pattern to ensure even clamping force.

Abs System

Torque specifications for ABS system components.

1

ABS Sensor Bolt

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Tighten the ABS sensor mounting bolt. Ensure proper alignment of the sensor before tightening. Do not overtighten as it could damage the sensor.

Brake Master Cylinder

Torque specifications for brake master cylinder and related components.

1

Brake Master Cylinder Mounting Bolts

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
These bolts secure the master cylinder to the brake booster. Ensure the master cylinder seats flush against the booster.

Brake Booster

Torque specifications for brake booster mounting components.

1

Brake Booster Mounting Nuts/Bolts

M8 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
These fasteners secure the brake booster to the firewall. Ensure proper seating before tightening.

Brake Lines

Torque specifications for brake line brackets.

1

Brake Line Bracket Bolts

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
These bolts secure brake line brackets to the chassis. Do not over-tighten.

Parking Brake

Torque specifications for parking brake components.

1

Parking Brake Cable Mounting Bracket Bolt

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
These bolts secure the parking brake cable bracket to the chassis. Ensure proper routing of the cable before tightening.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

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

1

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
2

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
3

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

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 specification when tightening brake bolts?

Using the correct torque specification is crucial for brake safety and performance. Over-tightening can damage the bolt, brake component, or cause brake binding, while under-tightening can lead to components loosening during driving, leading to brake failure. For example, an under-torqued caliper bolt might work its way loose, causing brake malfunction, while an over-torqued one might snap, requiring replacement of the caliper and bolt.

Q2

Where can I find the correct torque specifications for my 2014-2020 Acura MDX brakes?

The correct torque specifications for your specific 2014-2020 Acura MDX brake components can be found in the official Acura Service Manual for your model year. These specifications can also be found in some third-party repair guides, but always cross-reference to an official source for the highest accuracy. Many online databases exist, but confirmation with the service manual or a dealer-approved reference is recommended.

Q3

What happens if I don't have a torque wrench?

Using a torque wrench is the best practice for tightening bolts to precise specifications. If you do not have a torque wrench it's strongly suggested that the work is done by a qualified professional, this is especially true for brake components. Over or under torquing brake bolts can lead to part damage, and compromise vehicle safety.

Q4

Do I need to replace any brake bolts after removing them?

While not always mandatory for every single bolt, it is generally good practice, especially for critical components like caliper bolts and bracket bolts, to replace brake hardware. Many of these are single-use bolts or torque-to-yield bolts. If re-using old bolts, ensure they are inspected carefully and replaced if any sign of stretch or damage is present. For example, replacing caliper bolts whenever brake pads are changed will minimize risks.

Q5

Is it necessary to use thread-locking compounds on brake bolts?

Some brake bolts, particularly those on the calipers and brackets, may require thread-locking compound. Refer to the service manual for your 2014-2020 Acura MDX for specific instructions. Always use the recommended thread-locking compound and apply it according to instructions, typically a medium-strength compound is used.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

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

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

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 inch drive)

A calibrated torque wrench is essential for achieving accurate bolt tightening to specified values. A 1/2 inch drive is recommended for the torque values required on Acura MDX brake components.

  • Accurately measures applied torque
  • Click-type mechanism to prevent over-tightening
  • Ratchet head for easy use
Learn more

Torque Wrench (3/8 inch drive)

A smaller 3/8 inch drive torque wrench is useful for smaller brake components and for getting into tighter spaces.

  • Accurately measures applied torque
  • Click-type mechanism to prevent over-tightening
  • Ratchet head for easy use
Learn more

Socket Set (Metric)

A comprehensive metric socket set is needed to fit various bolt and nut sizes found on the Acura MDX braking system.

  • Various sizes (typically 10mm to 19mm)
  • 6-point sockets for better grip
  • Durable construction
Learn more
Service Procedures

Front Brake Caliper Bracket Bolt Torque Procedure

Procedure for tightening the front brake caliper bracket bolts to the correct torque specifications for 2014-2020 Acura MDX.

  • Locate the front brake caliper bracket bolts.
  • Using the appropriate socket and 1/2 inch drive torque wrench, tighten the bolts to 80 lb-ft (108 Nm).
  • Re-check torque to ensure correct value.
View full procedure

Front Brake Caliper Guide Pin Bolt Torque Procedure

Procedure for tightening the front brake caliper guide pin bolts to the correct torque specifications for 2014-2020 Acura MDX.

  • Locate the front brake caliper guide pin bolts.
  • Using the appropriate socket and 3/8 inch drive torque wrench, tighten the bolts to 27 lb-ft (37 Nm).
  • Re-check torque to ensure correct value.
View full procedure

Rear Brake Caliper Bracket Bolt Torque Procedure

Procedure for tightening the rear brake caliper bracket bolts to the correct torque specifications for 2014-2020 Acura MDX.

  • Locate the rear brake caliper bracket bolts.
  • Using the appropriate socket and 1/2 inch drive torque wrench, tighten the bolts to 43 lb-ft (58 Nm).
  • Re-check torque to ensure correct value.
View full procedure

Rear Brake Caliper Guide Pin Bolt Torque Procedure

Procedure for tightening the rear brake caliper guide pin bolts to the correct torque specifications for 2014-2020 Acura MDX.

  • Locate the rear brake caliper guide pin bolts.
  • Using the appropriate socket and 3/8 inch drive torque wrench, tighten the bolts to 17 lb-ft (23 Nm).
  • Re-check torque to ensure correct value.
View full procedure
Technical Service Bulletins

Brake Judder and Vibration Issues

2017-03-15

Technical bulletin regarding reports of brake judder and vibration on certain 2014-2016 Acura MDX models. This may be related to improper torque of caliper bracket bolts or warped rotors.

2014-2016

Resolution: Inspect brake rotors for warping. Ensure proper torque of caliper and bracket bolts. Replace components as necessary.

Updated Brake Pad Installation Procedure

2018-08-01

A revised procedure for brake pad installation to address premature wear issues. Proper torque of all bolts is critical. This applies to all models within the 2014-2020 range.

2014-2020

Resolution: Follow the updated service procedure which details correct installation steps, including accurate bolt torque application.

About the Author

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Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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