Dodge Ram 2500 1994-2002 47RH Transmission Transmission Torque Specifications & Bolt Torque Values
Dodge Ram 2500 1994-2002

Dodge Ram 2500 1994-2002 47RH Transmission Torque Specifications

Detailed torque specifications for the 47RH transmission bolts in the 1994-2002 Dodge RAM 2500. Includes bolt types, torque values, and installation tips.

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

Bellhousing

The bellhousing connects the transmission to the engine block. Proper torque ensures alignment and prevents leaks or misalignment.

1

Bellhousing Bolts

M10 x 1.5
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Torque in a crisscross pattern to ensure even pressure.

Torque Converter

The torque converter connects the engine to the transmission. Proper torque is critical to prevent loosening and drivetrain failure.

1

Torque Converter-to-Flexplate Bolts

M8 x 1.25
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Ensure the torque converter is fully seated before tightening.

Transmission Pan

The transmission pan houses the transmission fluid. Proper torque prevents warping and leaks.

1

Transmission Pan Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Torque in a crisscross pattern to prevent warping.

Valve Body

The valve body controls hydraulic pressure and gear shifts. Proper torque ensures consistent operation and prevents leaks.

1

Valve Body Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Torque in a crisscross pattern to ensure even pressure.

Output Shaft

The output shaft transfers power to the driveshaft. Proper torque prevents shaft movement and drivetrain damage.

1

Output Shaft Nut

M24 x 1.5
Torque Value
180 ft-lbs (244 N·m)
Important Notes
Estimated value based on similar transmission designs.

Transfer Case Adapter

The transfer case adapter connects the transmission to the transfer case. Proper torque ensures a secure connection and prevents leaks.

1

Transfer Case Adapter Bolts

M10 x 1.5
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Torque in a crisscross pattern to ensure even pressure.

Transmission Mount

The transmission mount secures the transmission to the frame. Proper torque ensures stability and prevents excessive movement.

1

Transmission Mount Bolts

M12 x 1.75
Torque Value
55 ft-lbs (75 N·m)
Important Notes
Ensure the transmission is properly aligned before tightening.

Shift Linkage

The shift linkage connects the gear shifter to the transmission. Proper torque ensures smooth shifting and prevents misalignment.

1

Shift Linkage Bolts

M8 x 1.25
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Ensure the linkage is properly aligned before tightening.

Cooler Lines

The cooler lines transport transmission fluid to and from the cooler. Proper torque prevents leaks and ensures proper fluid flow.

1

Cooler Line Fittings

M14 x 1.5
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Ensure fittings are properly aligned before tightening.

Internal Components

Internal components such as the stator support, pump, and servo covers require precise torque to ensure proper operation and prevent leaks.

1

Stator Support Bolts

M8 x 1.25
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar transmission designs.
2

Pump Bolts

M8 x 1.25
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Ensure the pump is properly aligned before tightening.
3

Rear Servo Cover Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Torque in a crisscross pattern to ensure even pressure.

Band Adjusters

The band adjusters control gear shifts by applying tension to the bands. Proper torque ensures proper band tension and prevents slippage.

1

Front Band Adjuster Locknut

M12 x 1.75
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Estimated value based on similar transmission designs.
2

Rear Band Adjuster Locknut

M12 x 1.75
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Estimated value based on similar transmission designs.

Dipstick Tube

The dipstick tube allows for checking transmission fluid levels. Proper torque prevents leaks and ensures accurate readings.

1

Transmission Dipstick Tube Bolt

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Ensure the tube is properly aligned before tightening.

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 are the torque specifications for the 47RH transmission pan bolts?

The torque specification for the 47RH transmission pan bolts is 12-15 ft-lbs. Over-tightening can damage the pan or strip the threads, while under-tightening may cause leaks. Always use a torque wrench for accuracy.

Q2

How often should I check the torque on my 47RH transmission bolts?

It is recommended to check the torque on critical bolts (e.g., pan bolts, bellhousing bolts) during routine maintenance, such as fluid changes or every 30,000 miles. Inspect for leaks or loose bolts if you notice shifting issues or fluid loss.

Q3

Can I reuse the transmission pan gasket after removing the pan?

Reusing the gasket is not recommended. Over time, the gasket compresses and may not seal properly upon reinstallation. Always replace the gasket with a new one to prevent leaks and ensure a proper seal.

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
  • Durable construction
Learn more

Socket Set

A set of sockets and accessories used to tighten or loosen bolts and nuts.

  • Multiple socket sizes
  • Compatible with torque wrench
Learn more

Thread Locker

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

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

47RH Transmission Bolt Torque Specifications

Detailed steps to properly torque the bolts on a 47RH transmission for a 1994-2002 Dodge RAM 2500.

  • Ensure the transmission is properly mounted and aligned.
  • Clean all bolt threads and apply thread locker if required.
  • Using a torque wrench, tighten the bellhousing bolts to 35 ft-lbs.
  • Tighten the transmission pan bolts to 12 ft-lbs in a crisscross pattern.
  • Torque the torque converter bolts to 35 ft-lbs.
  • Verify all bolts are properly torqued and recheck if necessary.
View full procedure
Technical Service Bulletins

47RH Transmission Bolt Loosening Issue

2001-05-15

Reports of transmission bolts loosening over time due to vibration.

1994-2002 Dodge RAM 2500

Resolution: Apply thread locker to all transmission bolts and ensure proper torque specifications are followed during installation.

47RH Transmission Pan Leak

2000-08-22

Transmission pan leaks due to improper bolt torque.

1994-2002 Dodge RAM 2500

Resolution: Replace the transmission pan gasket and torque the pan bolts to 12 ft-lbs in a crisscross pattern.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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