Chrysler 300 2005-2010 42RLE Transmission Transmission Torque Specifications & Bolt Torque Values
Chrysler 300 2005-2010

Chrysler 300 2005-2010 42RLE Transmission Torque Specifications

Detailed torque specifications for all bolts on the 42RLE automatic transmission found in the 2005-2010 Chrysler 300. Includes case, pan, valve body, and other relevant bolt torques.

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

These bolts secure the transmission to the engine block and/or the transmission crossmember/frame, holding it firmly in place within the vehicle chassis. Correct torque is crucial to prevent loosening, vibration, and potential damage.

1

Transmission Mounting Bolts

M12 x 1.75
Torque Value
40 ft-lbs (54 N·m)
Important Notes
Ensure all bolts are properly engaged before final torque application. Apply a small amount of thread locker if required by the service manual.

Transmission Case

These bolts secure various parts of the transmission case and housing together, forming the main structure of the unit.

1

Transmission Bellhousing Bolts

M10 x 1.5
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Apply anti-seize compound to bolt threads to facilitate future removal.
2

Transmission Bellhousing-to-Engine Stud Nuts

M10 x 1.5
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Some models may use studs instead of bolts. Ensure proper nut engagement on the stud.
3

Transmission Case-to-Extension Housing Bolts

M8 x 1.25
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Ensure proper alignment of the housing to the case. Inspect mating surfaces for debris before installation.

Transmission Pan

These bolts secure the transmission oil pan to the transmission case, sealing the transmission fluid. Proper torque is vital to ensure a leak-free seal without warping the pan or damaging the gasket. Over-torquing can cause leaks or damage.

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even pressure on the gasket. Be careful not to over tighten.

Transmission Plugs

These plugs seal the transmission's fluid drain and fill ports. Correct torque prevents leaks while allowing for easy removal for fluid changes. Overtightening can damage the threads or the plug/gasket.

1

Transmission Drain/Fill Plug

M18 x 1.5
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Use a new sealing washer or O-ring when installing the plugs to prevent leaks. Apply thread sealant if required by the service manual.

Torque Converter

These bolts (or studs and nuts depending on the vehicle) connect the torque converter to the engine's flex plate. They are CRUCIAL for transmitting engine power to the transmission, and proper torque ensures alignment and no separation at this critical connection point.

1

Torque Converter to Flex Plate Bolts/Nuts

M10 x 1.25
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Tighten bolts evenly in a star pattern to ensure proper alignment of the torque converter to the flex plate.

Transmission Output

This nut secures the output yoke or flange to the transmission output shaft. This is critical to secure the driveshaft to the transmission.

1

Transmission Output Shaft Nut

M24 x 1.5
Torque Value
140 ft-lbs (190 N·m)
Important Notes
Use a suitable tool to hold the output shaft stationary when tightening the nut.

Transmission Internal

These bolts secure internal components like the valve body, solenoid pack and filter. Proper torque here is crucial for correct operation and prevention of leaks or damage.

1

Transmission Valve Body Bolts

M6 x 1.0
Torque Value
8.3 ft-lbs (11.3 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even pressure on the valve body.
2

Transmission Solenoid Pack Bolts

M6 x 1.0
Torque Value
8.3 ft-lbs (11.3 N·m)
Important Notes
Ensure proper alignment of the solenoid pack before tightening. Do not overtighten.
3

Transmission Internal Filter Bolts

M6 x 1.0
Torque Value
8.3 ft-lbs (11.3 N·m)
Important Notes
Ensure the filter is properly seated before tightening bolts. Be careful not to overtighten these.

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 crucial to use the correct torque specifications when working on the 42RLE transmission?

Using incorrect torque can lead to several issues. Over-tightening can strip threads, deform components like the transmission pan, and even cause leaks. Under-tightening can cause fasteners to loosen over time due to vibration and heat cycles, also leading to leaks and potential component failure. Accurate torque ensures proper sealing and component integrity for long-term reliability. For example, if you over-tighten the transmission pan bolts, it could crush the gasket and cause a leak.

Q2

What type of sealant or gasket is recommended for the 42RLE transmission pan?

A quality, reusable rubber gasket is highly recommended for the 42RLE transmission pan. Avoid using silicone sealant alone as it can be problematic. If a sealant is used, a thin bead of RTV sealant (like Permatex Ultra Grey) in addition to the gasket is acceptable, but this is not normally necessary if the surfaces are properly cleaned. Always follow the manufacturer's torque specifications and tightening sequence with the gasket. Some aftermarket gaskets come pre-sealed, so verify if additional sealant is required.

Q3

Should I replace the transmission pan bolts every time I service the transmission?

While not strictly necessary every time, it's highly recommended to replace the transmission pan bolts if they show any signs of damage, corrosion or stretching, or if you have doubts regarding their integrity. New bolts ensure proper and consistent torque application. It's good practice for peace of mind, especially after multiple services. Using old, damaged bolts is a risk that could result in future leaks or worse. Many bolt kits are available from manufacturers, so replacing them is relatively simple and inexpensive.

Q4

What is the recommended tightening sequence for the 42RLE transmission pan bolts?

The tightening sequence for the 42RLE transmission pan bolts generally involves a crisscross pattern, starting from the center and working outwards. This ensures even pressure distribution on the gasket to prevent leaks. Typically, it will involve multiple passes. First, hand tighten all the bolts in the sequence, then using a torque wrench, apply 1/3 of the specified torque value. Go through the sequence again, using 2/3 of the specified torque. Finally, complete a third pass at the final specification. Check the specifications for the exact vehicle and bolt size.

Q5

Do the torque specifications change if I am using aftermarket transmission components?

Yes, it's crucial to follow the torque specifications provided by the aftermarket component manufacturer. Aftermarket parts may have different materials, tolerances, and therefore require different torque settings. For instance, an aftermarket transmission pan made of cast aluminum might require different torque than the stock steel pan. Always refer to the specific instructions provided with the part.

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 (ft-lbs)

A calibrated torque wrench is essential for accurately tightening bolts to the specified torque.

  • Accurate measurement in foot-pounds (ft-lbs)
  • Adjustable torque settings
Learn more

Socket Set

A standard socket set is required to fit the various bolt head sizes.

  • Variety of socket sizes (likely metric)
  • Both shallow and deep sockets may be needed
Learn more

Extension(s)

Socket extension(s) to reach bolts in recessed or hard-to-reach areas.

  • Varying lengths
  • Durable construction
Learn more
Service Procedures

42RLE Transmission Pan Bolt Torque

Procedure for tightening the transmission pan bolts on a Chrysler 300 with a 42RLE transmission.

  • Locate all the transmission pan bolts.
  • Using a socket wrench, snug each bolt down in a criss-cross pattern.
  • Using a calibrated torque wrench, tighten each bolt to 12 ft-lbs. in a criss-cross pattern
View full procedure

42RLE Transmission Valve Body Bolt Torque

Procedure for tightening the valve body bolts on a Chrysler 300 with a 42RLE transmission.

  • Locate the valve body bolts.
  • Using a socket wrench, snug each bolt down in a criss-cross pattern.
  • Using a calibrated torque wrench, tighten each bolt to 106 in-lbs in a criss-cross pattern.
View full procedure
Technical Service Bulletins

Potential Issues with Improper Torque on 42RLE Transmission Pan

2008-06-15

This bulletin addresses issues that may arise from improperly torqued transmission pan bolts, specifically related to leakage.

2005-2010 Chrysler 300 with 42RLE Transmission

Resolution: Inspect the pan for leaks. If a leak is found, ensure bolts are tightened to 12 ft-lbs in a criss-cross pattern.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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