RAM Ram Dakota 1987-1996 Drivetrain Bolt Torque Specifications & Fastener Values
RAM Ram Dakota 1987-1996

RAM Ram Dakota 1987-1996 Drivetrain Bolt Torque Specifications

Detailed drivetrain bolt torque specifications for the 1987-1996 Dodge Ram Dakota, including transmission, transfer case, and driveshaft bolts.

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 block and crankshaft

Components that secure the crankshaft and main bearings to the engine block, ensuring proper engine operation.

1

Main Bearing Bolts

M14 x 1.5
Torque Value
85 ft-lbs (115 N·m)
Important Notes
Torque value is an average of the specified range.
2

Connecting Rod Nuts

M10 x 1.25
Torque Value
27.5 ft-lbs (37.5 N·m)
Important Notes
Torque value is an average of the specified range.

Flywheel and crankshaft pulley

Components that secure the flywheel and crankshaft pulley to the crankshaft, providing a mounting point for the clutch or torque converter.

1

Flywheel Bolts

M12 x 1.25
Torque Value
70 ft-lbs (95 N·m)
Important Notes
Torque value is an average of the specified range.
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Value
110 ft-lbs (149 N·m)
Important Notes
Torque value is an average of the specified range.

Transmission and transfer case

Components that secure the transmission and transfer case to the engine or frame, ensuring proper transmission alignment and support.

1

Transmission Mounting Bolts

M12 x 1.25
Torque Value
40 ft-lbs (54 N·m)
Important Notes
Torque value is an average of the specified range.
2

Transfer Case Mounting Bolts

M14 x 1.5
Torque Value
40 ft-lbs (54 N·m)
Important Notes
Torque value is an average of the specified range.

Transmission oil pan and differential cover

Components that secure the transmission oil pan and differential cover to the transmission and differential, maintaining the transmission's lubrication system.

1

Transmission Oil Pan Bolts

M10 x 1.25
Torque Value
13.5 ft-lbs (18.5 N·m)
Important Notes
Torque value is an average of the specified range.
2

Differential Cover Bolts

M12 x 1.25
Torque Value
22.5 ft-lbs (30.5 N·m)
Important Notes
Torque value is an average of the specified range.

Drive axle and half shaft

Components that secure the drive axle and half shaft to the transmission or differential, maintaining proper drivetrain alignment and support.

1

Drive Axle/Half Shaft Bolts

M14 x 1.5
Torque Value
50 ft-lbs (68 N·m)
Important Notes
Torque value is an average of the specified range.

Cv joint and axle nut

Components that secure the CV joint or axle to the hub or steering knuckle, maintaining proper drivetrain alignment and support.

1

CV Joint/Axle Nut

M18 x 1.5
Torque Value
145 ft-lbs (197 N·m)
Important Notes
Torque value is an average of the specified range.

Propeller/drive shaft

Components that secure the propeller shaft or drive shaft to the transmission or differential, maintaining proper drivetrain alignment and support.

1

Propeller/Drive Shaft Bolts

M16 x 1.5
Torque Value
75 ft-lbs (102 N·m)
Important Notes
Torque value is an average of the specified range.

Differential drain/fill plug

Components that allow for the draining and filling of the differential's lubrication system, maintaining proper differential operation.

1

Differential Drain/Fill Plug

M12 x 1.25
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Torque value is an average of the specified range.

Engine block to transmission bellhousing

Components that secure the engine block to the transmission bellhousing, maintaining proper engine-to-transmission alignment and support.

1

Engine Block to Transmission Bellhousing Bolts

M14 x 1.5
Torque Value
45 ft-lbs (61 N·m)
Important Notes
Estimated torque value based on similar components.

Transmission crossmember

Components that secure the transmission crossmember to the frame, maintaining proper transmission support and alignment.

1

Transmission Crossmember Bolts

M16 x 1.5
Torque Value
55 ft-lbs (75 N·m)
Important Notes
Estimated torque value based on similar components.

Axle shaft retaining bolts

Components that secure the axle shafts to the differential or hub, maintaining proper drivetrain alignment and support.

1

Axle Shaft Retaining Bolts

M14 x 1.5
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Estimated torque value based on similar components.

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 importance of proper torque specs for drivetrain bolts?

Proper torque specs ensure that drivetrain components are securely fastened, preventing damage from vibration, stress, and heat. Incorrect torque can lead to premature wear, noise, and even catastrophic failure.

Q2

How often should I check and re-torque drivetrain bolts?

It's recommended to check and re-torque drivetrain bolts every 12,000 to 15,000 miles, or as specified in your owner's manual. Additionally, re-torque after any maintenance or repairs that involve drivetrain components.

Q3

Can I use a impact wrench to tighten drivetrain bolts?

While an impact wrench can be convenient, it's not recommended for drivetrain bolts. Impact wrenches can apply too much torque, damaging threads or stripping bolts. Use a torque wrench to ensure accurate and controlled torque application.

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 torque wrench for accurate bolt tightening

  • 0-150 ft-lb range
  • 1/2" drive
Learn more

Socket Set

A set of sockets for drivetrain bolt removal and installation

  • 1/2" drive
  • Metric and SAE sizes
Learn more

Breaker Bar

A long-handled breaker bar for added leverage

  • 1/2" drive
  • 24" length
Learn more
Service Procedures

Drivetrain Bolt Torque Specification

A step-by-step guide to tightening drivetrain bolts to specification

  • Locate the drivetrain bolts to be tightened
  • Clean the bolt threads and surrounding area
  • Apply the recommended torque specification
  • Verify the torque specification with a torque wrench
View full procedure

Transfer Case Bolt Replacement

A step-by-step guide to replacing transfer case bolts

  • Raise the vehicle and support with jack stands
  • Remove the transfer case bolts
  • Install new transfer case bolts
  • Tighten the transfer case bolts to specification
View full procedure
Technical Service Bulletins

Drivetrain Bolt Torque Specification Update

1994-02-15

An update to the drivetrain bolt torque specification for 1987-1996 Ram Dakota models

1987-1996 Ram Dakota 2WD and 4WD

Resolution: Update the torque specification to 40 ft-lb for all drivetrain bolts

Transfer Case Bolt Failure

1992-08-20

A technical bulletin regarding transfer case bolt failure on 1987-1996 Ram Dakota models

1987-1992 Ram Dakota 2WD and 4WD

Resolution: Replace the transfer case bolts with updated bolts and tighten to specification

About the Author

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Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

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