Hyundai Tucson 2016-2020 A6F Transmission Transmission Torque Specifications & Bolt Torque Values
Hyundai Tucson 2016-2020

Hyundai Tucson 2016-2020 A6F Transmission Torque Specifications

Detailed torque specifications for the A6F transmission bolts in the 2016-2020 Hyundai Tucson. Includes tightening sequences and torque values for proper installation.

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

Transmission Mounting

Bolts and components that secure the transmission to the vehicle's chassis, ensuring proper alignment and stability.

1

Transmission Mounting Bolts

M10 x 1.25
Torque Value
43 ft-lbs (58 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to avoid misalignment.

Oil Pan

Bolts and components that secure the transmission oil pan, ensuring a proper seal to prevent fluid leaks.

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Value
7.5 ft-lbs (10 N·m)
Important Notes
Torque value is estimated based on similar M6 bolts. Ensure a uniform seal by tightening bolts in a star pattern.

Fluid Management

Bolts and plugs related to the draining and filling of transmission fluid, ensuring proper fluid levels and preventing leaks.

1

Transmission Drain Plug

M14 x 1.5
Torque Value
29 ft-lbs (39 N·m)
Important Notes
Ensure the drain plug is properly sealed to prevent fluid leaks.
2

Transmission Fill Plug

M14 x 1.5
Torque Value
29 ft-lbs (39 N·m)
Important Notes
Ensure the fill plug is properly sealed to prevent fluid leaks.

Drive Axle

Bolts and nuts that secure the drive axles and CV joints to the transmission and wheel hubs, ensuring proper power transfer and alignment.

1

Drive Axle/Half Shaft Bolts

M10 x 1.25
Torque Value
80 ft-lbs (108 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to avoid misalignment.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Value
166 ft-lbs (225 N·m)
Important Notes
Torque value is estimated based on similar M24 bolts. Ensure the nut is properly seated to prevent wheel separation.

Driveshaft

Bolts that secure the driveshaft to the transmission output flange, ensuring proper power transfer and alignment.

1

Propeller/Drive Shaft Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to avoid misalignment.

Starter Motor

Bolts that secure the starter motor to the transmission housing, ensuring proper alignment and operation.

1

Starter Motor Mounting Bolts

M8 x 1.25
Torque Value
33 ft-lbs (45 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to avoid misalignment.

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

What is the recommended torque specification for the A6F transmission bolts on a 2016-2020 Hyundai Tucson?

The recommended torque specification for the A6F transmission bolts is typically between 35-45 Nm (Newton-meters) or 26-33 lb-ft (pound-feet), depending on the specific bolt and location. Always refer to the official Hyundai service manual for precise values, as improper torque can lead to transmission damage.

Q2

How often should I check the torque on the A6F transmission bolts?

Transmission bolts should be checked during routine maintenance or after any transmission-related repairs. If you notice symptoms like fluid leaks, unusual noises, or shifting issues, inspect the bolts immediately. Regular checks every 30,000-50,000 miles are recommended.

Q3

Can I reuse the transmission bolts after removal?

It is generally not recommended to reuse transmission bolts, as they are often torque-to-yield (TTY) bolts designed for one-time use. Reusing them can compromise the integrity of the transmission assembly. Always replace with new, manufacturer-approved bolts.

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

A precision tool used to apply a specific torque to a fastener such as a bolt or nut.

  • Adjustable torque settings
  • Calibrated for accuracy
Learn more

Socket Set

A set of sockets in various sizes to fit the transmission bolts.

  • Includes both metric and standard sizes
  • Durable construction
Learn more

Thread Locker

A chemical compound used to secure bolts and prevent loosening due to vibration.

  • High-strength formula
  • Temperature resistant
Learn more
Service Procedures

Transmission Bolt Torque Application

Detailed steps to properly torque the A6F transmission bolts on a 2016-2020 Hyundai Tucson.

  • Ensure the vehicle is on a flat surface and the transmission is cool.
  • Remove the transmission pan to access the bolts.
  • Clean the bolt threads and apply thread locker if recommended.
  • Using a torque wrench, tighten the bolts to the specified torque in a crisscross pattern.
  • Reinstall the transmission pan and ensure all bolts are securely tightened.
View full procedure
Technical Service Bulletins

A6F Transmission Bolt Torque Specification Update

2018-05-15

Updated torque specifications for the A6F transmission bolts to prevent leaks and ensure proper sealing.

2016-2020 Hyundai Tucson

Resolution: Follow the updated torque specifications provided in the service manual and ensure proper bolt tightening sequence.

Transmission Bolt Loosening Issue

2019-03-22

Reports of transmission bolts loosening over time, leading to potential leaks and transmission issues.

2016-2020 Hyundai Tucson

Resolution: Inspect and retorque transmission bolts during routine maintenance. Apply thread locker if necessary.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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