Chrysler Concorde 1993-1997 42LE Transmission Transmission Torque Specifications & Bolt Torque Values
Chrysler Concorde 1993-1997

Chrysler Concorde 1993-1997 42LE Transmission Torque Specifications

This page provides detailed torque specifications for the 42LE automatic transmission bolts used in the 1993-1997 Chrysler Concorde. Includes torque values for various transmission components and fasteners.

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 securing the transmission to the engine block and/or the vehicle's subframe. Proper torque ensures firm mounting, prevents vibration, and maintains alignment.

1

Transmission Mount Bolts

M12 x 1.75
Torque Value
45 ft-lbs (61 N·m)
Important Notes
Value is an estimated average for 10-12mm bolts.

Oil Pan

Bolts securing the transmission oil pan to the transmission case. Proper torque is essential to prevent leaks and maintain fluid pressure.

1

Transmission Oil Pan Bolts

M8 x 1.25
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten in a criss-cross pattern to ensure even gasket compression. Avoid over-tightening.

Drain Fill Plugs

Torque specifications for the transmission drain and fill plugs. Proper torque is crucial to prevent leaks.

1

Transmission Drain/Fill Plug

M16 x 1.5
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Use new sealing washer to prevent leaks.

Drive Axle

Bolts connecting the inner CV joints to the transmission output flanges. Correct torque is essential for secure attachment and power transfer.

1

Drive Axle/Half Shaft Bolts

M10 x 1.5
Torque Value
75 ft-lbs (102 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even pressure on the flange.

Range Sensor

Bolts securing the range sensor/neutral safety switch to the transmission case. Proper torque prevents damage to the sensor.

1

Range Sensor/Neutral Safety Switch Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Use care not to overtighten, as this can damage the sensor. Value is an estimated average for 6-8mm bolts.

Solenoid Pack

Bolts securing the solenoid pack to the valve body or transmission case. Correct torque prevents fluid leaks and ensures proper operation.

1

Transmission Solenoid Pack Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Value is an estimated average for 6-8mm bolts.

Cooler Line Fittings

Torque specifications for the transmission cooler line fittings. Proper torque is critical to prevent leaks.

1

Transmission Cooler Line Fittings

Varies (see notes)
Torque Value
17 ft-lbs (23 N·m)
Important Notes
Torque value is for metal-to-metal fittings. O-ring seal fittings should be hand-tight plus 1/4 turn. Always check torque specs on your fitting. Do not over tighten.

Valve Body

Bolts securing the valve body to the transmission case. Correct torque prevents warpage, leaks, and ensures proper valve operation.

1

Transmission Valve Body Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to prevent warpage. Value is an estimated average for 6-8mm bolts.

Case Housing

Bolts securing the transmission case halves together. Proper torque prevents fluid leaks and ensures proper compression of the gasket.

1

Transmission Case Housing Bolts

M10 x 1.5
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Tighten bolts in a criss-cross pattern for even pressure. Value is an estimated average for 10-12mm bolts.

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 for the 42LE transmission?

Using the correct torque specifications ensures proper clamping force between components, preventing leaks, and ensuring even pressure distribution on gaskets and seals. Over-tightening can damage threads, warp components, or crush gaskets leading to leaks. Under-tightening can result in bolts loosening over time, causing leaks or failure. For example, incorrect torque on the pan bolts could lead to fluid leaks and potential transmission damage.

Q2

What happens if I over-tighten the transmission pan bolts on my 42LE?

Over-tightening the transmission pan bolts on the 42LE can cause the pan to warp, potentially leading to fluid leaks. It can also damage the threads in the transmission case or crush the gasket, resulting in an improper seal and ultimately fluid loss. A common symptom is a slow drip that increases when the transmission is hot.

Q3

What is the recommended torque wrench type for 42LE transmission work?

A click-type torque wrench is recommended for 42LE transmission work. It provides an audible click when the set torque is reached, preventing over-tightening. A beam-type torque wrench can also be used but requires careful observation to avoid over-torquing. Avoid using impact wrenches for tightening as they can easily overtighten the bolts.

Q4

Should I use thread locker on 42LE transmission bolts?

Generally, thread locker is not necessary for most 42LE transmission bolts when torquing to the specified values. However, for certain bolts that may be subject to vibration, a medium-strength thread locker (e.g., Loctite 242) may be used as a precaution. Always consult the factory service manual for specific recommendations, especially for internal components. An example would be valve body bolts, some mechanics might prefer thread locker even if not explicitly stated for these.

Q5

How often should I check the torque of the 42LE transmission bolts?

It is generally not necessary to periodically check the torque of the bolts unless a specific repair has been performed or if you suspect a leak. After a major repair involving removing transmission components, a check after a short period of driving is a good idea. Also, after a fluid change, consider checking the pan bolts again after the first few drive cycles as thermal expansion and contraction can impact their torque.

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 (in-lb and ft-lb)

A calibrated torque wrench is essential for accurately tightening bolts to the manufacturer's specifications. Both inch-pound (in-lb) and foot-pound (ft-lb) ranges are needed for different bolts on the 42LE transmission.

  • Accuracy +/- 3%
  • Click or Digital display
Learn more

Socket Set (Standard and Metric)

A comprehensive socket set containing both standard and metric sizes is required to access all the bolts on the 42LE transmission.

  • 6 point sockets
  • Variety of sizes
  • Deep and shallow sockets
Learn more

Extension Bars

Extension bars of various lengths will help reach bolts in tight spots.

  • Various lengths
  • 3/8 inch and 1/2 inch drive
Learn more

Universal Joint

A universal joint adapter will allow for reaching bolts at angles.

  • 3/8 inch and 1/2 inch drive
  • Swivel action
Learn more
Service Procedures

42LE Transmission Pan Bolt Torque Procedure

This procedure outlines the proper steps for torquing the transmission pan bolts on a 42LE transmission.

  • Clean the transmission pan and mating surface.
  • Install the pan with a new gasket.
  • Hand tighten all pan bolts evenly.
  • Using a torque wrench, torque all pan bolts to 12 ft-lbs in a crisscross pattern.
  • Recheck torque to ensure proper spec.
View full procedure

42LE Valve Body Bolt Torque Procedure

This procedure describes how to correctly torque the bolts on the valve body of a 42LE transmission.

  • Carefully install the valve body.
  • Hand tighten all valve body bolts evenly.
  • Using a torque wrench, torque all valve body bolts to 90 in-lbs in a crisscross pattern.
  • Recheck torque to ensure proper spec.
View full procedure

42LE Transmission Filter Bolt Torque Procedure

This procedure details the correct way to torque the transmission filter bolts for a 42LE.

  • Install the transmission filter.
  • Hand tighten all filter bolts evenly.
  • Using a torque wrench, torque all filter bolts to 90 in-lbs.
  • Recheck torque to ensure proper spec.
View full procedure
Technical Service Bulletins

Possible Over Torque of 42LE Transmission Pan Bolts

1995-07-15

This bulletin addresses the issue of over-torquing the 42LE transmission pan bolts, which can lead to leaks and gasket failure. The original torque spec may be too high in some cases.

1993-1997 Chrysler Concorde

Resolution: Reduce the torque value to 12 ft-lbs and use a new, quality gasket for reinstallation.

Valve Body Bolt Torque Specification Revision

1994-02-28

This technical bulletin revises the torque specification for the valve body bolts on the 42LE Transmission. Improper torque can lead to valve body damage or shifting issues.

1993-1997 Chrysler Concorde

Resolution: Recheck and retorque valve body bolts to 90 in-lbs

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