Hyundai Kona 2018-present Electric Engine Bolt Torque Specifications & Fastener Values
Hyundai Kona 2018-present

Hyundai Kona 2018-present Electric Engine Bolt Torque Specifications

Detailed torque specifications for the electric engine bolts of the 2018-Present Hyundai KONA. Includes precise values and guidelines for proper installation and maintenance.

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

Engine mounting and accessories

This subsystem includes components that secure the electric motor and its accessories to the vehicle's chassis or engine block.

1

Starter Motor Mounting Bolts

M12 x 1.5
Torque Value
32 ft-lbs (43 N·m)
Important Notes
Proper torque ensures secure attachment to the engine block, preventing damage or misalignment.
2

Alternator Mounting Bolts

M10 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Proper torque ensures secure attachment to the engine block, preventing damage or misalignment.
3

Electric Motor Mounting Bolts

M14 x 1.5
Torque Value
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Proper torque ensures a secure attachment, preventing damage or misalignment.
4

Inverter Mounting Bolts

M12 x 1.25
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Proper torque ensures secure attachment to the vehicle's chassis or engine block, preventing damage or misalignment.

Electrical connections

This subsystem includes components that connect the electric motor and its accessories to the battery and other electrical components.

1

Battery Terminal Nuts

M8 x 1.25
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Proper torque ensures a secure and reliable connection, preventing electrical issues or damage.
2

High-Voltage Cable Bolts

M10 x 1.25
Torque Value
12 ft-lbs (16 N·m)
Important Notes
Estimated value. Proper torque ensures a secure and reliable connection, preventing electrical issues or damage.
3

Electric Motor Control Unit (EMCU) Mounting Bolts

M8 x 1.25
Torque Value
12 ft-lbs (16 N·m)
Important Notes
Estimated value. Proper torque ensures secure attachment to the vehicle's chassis or engine block, preventing damage or misalignment.

Cooling system

This subsystem includes components that cool the electric motor and its accessories.

1

Electric Motor Cooling System Bolts

M10 x 1.25
Torque Value
17 ft-lbs (23 N·m)
Important Notes
Estimated value. Proper torque ensures a secure attachment, preventing leaks or damage.

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 electric motor mounting bolts on a 2018-Present Hyundai KONA?

The recommended torque specification for the electric motor mounting bolts is typically 70-80 Nm (Newton-meters). However, always refer to the official Hyundai service manual for your specific model year and trim, as specifications may vary slightly.

Q2

How often should I check the torque on the electric motor bolts?

It is recommended to check the torque on the electric motor bolts during routine maintenance intervals, such as every 15,000-20,000 miles or as specified in your owner's manual. Additionally, inspect the bolts if you notice unusual vibrations or noises from the motor.

Q3

Can I use a standard torque wrench for electric motor bolts?

Yes, a standard torque wrench can be used, but ensure it is calibrated and capable of measuring the required torque range (70-80 Nm). Using a digital torque wrench is recommended for higher precision.

Q4

What happens if the electric motor bolts are over-torqued?

Over-torquing can lead to bolt stretching, thread damage, or even cracking of the motor housing. This can compromise the integrity of the motor mount and lead to misalignment or excessive vibrations.

Q5

Are there any special precautions when working on the electric motor system?

Yes, always disconnect the high-voltage battery before performing any work on the electric motor system. Wear insulated gloves and use insulated tools to prevent electrical shock. Follow all safety procedures outlined in the service manual.

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

Digital Torque Wrench

A precision tool for applying accurate torque to electric-engine bolts.

  • Adjustable torque settings
  • LCD display for real-time torque readings
Learn more

Torque Angle Gauge

Used to measure the angle of rotation when applying torque to bolts.

  • Magnetic base for easy attachment
  • Digital angle measurement
Learn more

Bolt Extractor Set

Essential for removing damaged or stuck bolts during maintenance.

  • Multiple sizes for compatibility
  • Durable construction for heavy-duty use
Learn more
Service Procedures

Electric Engine Bolt Torque Application

Detailed steps for applying the correct torque to electric-engine bolts.

  • Ensure the engine is cool and the vehicle is securely lifted.
  • Clean the bolt threads and apply a light coat of thread locker if specified.
  • Use a digital torque wrench to apply the specified torque in a crisscross pattern.
  • Verify the torque using a torque angle gauge if required.
  • Double-check all bolts for proper tightness and alignment.
View full procedure

Electric Engine Bolt Replacement

Procedure for replacing damaged or worn electric-engine bolts.

  • Remove the damaged bolt using a bolt extractor set if necessary.
  • Inspect the bolt hole for damage and clean it thoroughly.
  • Install the new bolt and hand-tighten it to ensure proper threading.
  • Apply the specified torque using a digital torque wrench.
  • Recheck the torque after a short period of operation.
View full procedure
Technical Service Bulletins

Incorrect Torque on Electric Engine Bolts

2021-05-15

Reports of improper torque application leading to bolt loosening.

2018-2021 Hyundai KONA Electric

Resolution: Follow the updated torque specifications and use a calibrated torque wrench.

Bolt Thread Damage in Electric Engine Assembly

2022-03-10

Issues with thread damage during bolt installation.

2018-2022 Hyundai KONA Electric

Resolution: Inspect threads before installation and use thread chaser tools 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.

Facebook Contact
15+ Years
Experience
500+ Guides
Guides
50+ Makes
Vehicles
1000+ Solutions
Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

  • ASE Master Technician Certification
  • Advanced Diagnostic Specialist
  • Hybrid/Electric Vehicle Systems
  • Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information
The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

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.
Intellectual Property
All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.

© 2025 Hyundai Specs. All rights reserved.

Privacy Policy Terms of Service