Chrysler Concorde 1993-1997 Drivetrain Bolt Torque Specifications & Fastener Values
Chrysler Concorde 1993-1997

Chrysler Concorde 1993-1997 Drivetrain Bolt Torque Specifications

Comprehensive list of torque specifications for various drivetrain bolts on the 1993-1997 Chrysler Concorde, including transmission, axles, and differential components.

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 Flywheel Flexplate

These components connect the engine's crankshaft to the transmission input shaft. Includes flywheel bolts for manual transmissions and flexplate bolts for automatic transmissions.

1

Flywheel Bolts

M10 x 1.25
Torque Value
72.5 ft-lbs (98.3 N·m)
Important Notes
Tighten in a star pattern. Ensure threads are clean and dry. If reusing bolts, inspect for damage.
2

Flexplate Bolts

M10 x 1.25
Torque Value
60 ft-lbs (81.3 N·m)
Important Notes
Tighten in a star pattern. Ensure threads are clean and dry. If reusing bolts, inspect for damage.
3

Torque Converter Bolts

M8 x 1.25
Torque Value
40 ft-lbs (54.2 N·m)
Important Notes
Ensure the torque converter is properly seated on the transmission input shaft. Check for correct alignment before tightening.

Transmission Mounting

These components secure the transmission to the engine and the vehicle frame. Includes mounting bolts and oil pan bolts.

1

Transmission Mounting Bolts

M12 x 1.75
Torque Value
45 ft-lbs (61 N·m)
Important Notes
Ensure proper alignment of the transmission before tightening. Use a criss-cross pattern when tightening.
2

Transmission Oil Pan Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (11.8 N·m)
Important Notes
Tighten in a criss-cross pattern. Do not overtighten, as this may damage the pan or gasket. Check for leaks after filling with fluid.
3

Transmission Drain Plug

M18 x 1.5
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Use a new washer or O-ring on the drain plug. Do not overtighten.
4

Transmission Fill Plug

M18 x 1.5
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Use a new washer or O-ring on the fill plug. Do not overtighten.
5

Transmission Output Shaft Flange Bolts

M10 x 1.5
Torque Value
65 ft-lbs (88 N·m)
Important Notes
Ensure the output shaft flange is properly seated. Tighten in a criss-cross pattern.
6

Transmission Speed Sensor Bolt

M6 x 1.0
Torque Value
7.5 ft-lbs (10.2 N·m)
Important Notes
Do not overtighten to avoid damaging the sensor.

Drive Axle Components

Components that transmit power from the transmission to the wheels. Includes drive axle bolts and CV joint nuts.

1

Drive Axle/Half Shaft Bolts

M10 x 1.25
Torque Value
75 ft-lbs (102 N·m)
Important Notes
Tighten in a criss-cross pattern. Ensure the axle is properly seated in the transmission and wheel hub.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Value
190 ft-lbs (258 N·m)
Important Notes
Use a new nut if removed. Ensure proper bearing preload. This is a critical component, so verify proper torque is achieved.

Differential Components

Components related to the differential, which may be rear-mounted or part of the transaxle. Includes mounting bolts, cover bolts, and drain/fill plugs. This section applies only if the vehicle has a separate differential.

1

Differential Housing Mounting Bolts

M12 x 1.75
Torque Value
67.5 ft-lbs (91.5 N·m)
Important Notes
Tighten in a criss-cross pattern. Ensure proper alignment of the differential housing.
2

Differential Cover Bolts

M8 x 1.25
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Use a new gasket or sealant if required. Tighten in a criss-cross pattern. Do not overtighten, as this may damage the cover or gasket.
3

Differential Drain Plug

M18 x 1.5
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Use a new washer or O-ring on the drain plug. Do not overtighten.
4

Differential Fill Plug

M18 x 1.5
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Use a new washer or O-ring on the fill plug. Do not overtighten.

Driveshaft Components

These components are related to the drive shaft that is in RWD/AWD vehicles

1

Propeller/Drive Shaft Bolts

M10 x 1.5
Torque Value
17.5 ft-lbs (24 N·m)
Important Notes
Ensure proper alignment of the drive shaft. Use thread locker if specified in the manual. Tighten evenly in a star pattern.

Transfer Case Components

Components related to the transfer case on AWD/4WD vehicles. Includes drain/fill plugs. This section applies only if the vehicle is equipped with a transfer case.

1

Transfer Case Drain Plug

M18 x 1.5
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Use a new washer or O-ring on the drain plug. Do not overtighten.
2

Transfer Case Fill Plug

M18 x 1.5
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Use a new washer or O-ring on the fill plug. Do not overtighten.

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 specifications when working on the drivetrain?

Using the correct torque ensures that bolts are neither too loose nor too tight. Over-tightening can stretch or break bolts, damage threads, or distort components, leading to failure. Under-tightening can cause parts to come loose, resulting in vibration, wear, or catastrophic failure. For example, an improperly torqued CV axle nut can cause wheel bearing damage or the axle to detach.

Q2

Do I need to use new bolts every time I work on the drivetrain?

It's generally recommended to replace critical bolts, such as those for the CV axles, flexplate, and torque converter, as these can stretch or fatigue over time and are often torque-to-yield designs. Reusing these bolts can lead to unreliable clamping force and potential failure. For other fasteners, inspect them carefully for damage or stretching and replace if necessary. For example, if a bolt shows signs of being necked down, or has elongated threads, it should always be replaced.

Q3

What tools do I need to properly torque drivetrain bolts?

You'll need a reliable torque wrench capable of measuring torque within the range required for your specific bolts (typically in ft-lbs or Nm). It is also essential to have a socket set that fits your bolts, and any extensions necessary to reach the bolt head. Clean the threads on both the bolt and the component. Ensure your torque wrench is properly calibrated. In some cases you might need a special torque angle gauge for certain torque-to-yield bolts. Using a cheap torque wrench or ignoring the calibration can lead to vastly inaccurate torque readings.

Q4

What does 'torque-to-yield' mean, and how do I handle those bolts?

Torque-to-yield (TTY) bolts are designed to stretch a specific amount during tightening. They should always be replaced after being removed. A TTY bolt procedure typically involves tightening to a specific torque value, followed by an additional angle of rotation (e.g., 90 degrees). Failing to follow the TTY procedure or reusing TTY bolts can result in the bolt failing and the joint not being secured properly.

Q5

What should I do if I strip a bolt during installation?

If you strip a bolt, remove it carefully. The damaged threads on the bolt and component may require repair with thread inserts or helicoils. For critical components like the CV axles or flexplate, it is often best to bring this to a qualified technician, as a mistake in repair can lead to major issues.

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 calibrated tool used to apply a specific amount of torque to a fastener.

  • Various torque ranges
  • Click-type or digital display
  • Calibration certificate (recommended)
Learn more

Socket Set

A collection of sockets of varying sizes to fit different bolt heads.

  • Metric sizes
  • 1/2" and 3/8" drive sizes
  • 6-point sockets (recommended for higher torque)
Learn more

Wrench Set

Open-ended and box-ended wrenches for holding fasteners.

  • Metric sizes
  • Combination wrenches recommended
Learn more

Extension bars

Extension bars to add reach to the socket.

  • Various lengths
  • 3/8" and 1/2" drive
Learn more
Service Procedures

Drivetrain Bolt Torque Specifications

This provides torque specifications for bolts and fasteners within the drivetrain of a 1993-1997 Chrysler Concorde. Always follow these torque specs to ensure safety and proper operation.

  • 1. Identify the specific bolt or fastener you need to torque.
  • 2. Consult a repair manual or online database to determine the correct torque specification.
  • 3. Select the appropriate socket size.
  • 4. Set the torque wrench to the specified torque value.
  • 5. Slowly apply torque to the fastener until the torque wrench indicates the set value is reached (click-type wrench or reading on digital display).
  • 6. Double check your work
View full procedure
Technical Service Bulletins

Possible Transmission Housing Bolt Loosening

1996-03-15

Some transmissions on the 1993-1997 Chrysler Concorde may exhibit loosening of the bolts securing the transmission housing. This can result in fluid leaks or transmission issues.

1993-1997

Resolution: Inspect and retorque transmission housing bolts to the proper specification. Use thread-locking compound if necessary per service manual.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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