Dodge Ram 2500 1994-2002 47RH Transmission Specifications
This document provides detailed technical specifications for the 47RH automatic transmission used in the 1994-2002 Dodge RAM 2500. It includes gear ratios, torque converter specifications, fluid capacity, shift points, and other critical data essential for maintenance, repair, and performance upgrades. Designed for mechanics, enthusiasts, and DIYers, this guide ensures accurate information for diagnosing issues, rebuilding transmissions, or enhancing performance. Whether you're troubleshooting, replacing parts, or upgrading your RAM 2500, this resource offers valuable insights into the 47RH transmission's design and operation.
Overview Specifications
This document provides detailed specifications and technical information about the 47RH transmission used in the 1994-2002 Dodge RAM 2500. It is designed to assist mechanics, enthusiasts, and owners in understanding the transmission's features, maintenance requirements, and performance capabilities. Use this guide to navigate through sections, search for specific details, and reference key specifications quickly.
How to Use
Use the search functionality to find specific terms or topics within the document. Enter keywords related to the 47RH transmission, such as 'torque converter' or 'gear ratios,' to locate relevant information efficiently.
Navigate through the document by scrolling through sections or using the table of contents. Each section is organized into subsections with detailed points for easy reference. Use the quick reference table for key specifications.
Key Specifications
Transmission Type
4-speed automatic
Torque Capacity
450 lb-ft
Fluid Capacity
12-14 quarts
Gear Ratios
2.74:1, 1.54:1, 1.00:1, 0.69:1
Stall Speed
1800-2200 RPM
Available Specifications
Transmission Design
This section covers the design and construction of the 47RH transmission, including its components, materials, and engineering features. Learn about the transmission's durability, torque handling, and compatibility with the Dodge RAM 2500.
Transmission Design
This section covers the design and construction of the 47RH transmission, including its components, materials, and engineering features. Learn about the transmission's durability, torque handling, and compatibility with the Dodge RAM 2500.
Gear Configuration
- 4-speed automatic transmission
- Includes overdrive for improved fuel efficiency
- Gear ratios: 1st (2.74:1), 2nd (1.54:1), 3rd (1.00:1), 4th (0.69:1)
- Reverse gear ratio: 2.21:1
- Designed for heavy-duty applications
- Robust planetary gearset for durability
Torque Converter
- Lock-up torque converter for reduced slippage
- Stall speed: 1800-2200 RPM
- Designed to handle high torque loads
- Improves fuel efficiency and performance
- Compatible with diesel and gasoline engines
Performance Specifications
This section outlines the performance capabilities of the 47RH transmission, including torque capacity, shift patterns, and operational limits. Understand how the transmission performs under various driving conditions.
Performance Specifications
This section outlines the performance capabilities of the 47RH transmission, including torque capacity, shift patterns, and operational limits. Understand how the transmission performs under various driving conditions.
Torque Capacity
- Rated for up to 450 lb-ft of torque
- Suitable for towing and heavy payloads
- Enhanced clutch packs for improved durability
- Handles high-stress conditions effectively
Shift Patterns
- Smooth and precise shifting
- Adaptive shift logic for varying loads
- Manual shifting capability with aftermarket modifications
- Designed for optimal performance in both city and highway driving
Maintenance and Service
This section provides guidelines for maintaining and servicing the 47RH transmission. Learn about fluid requirements, common issues, and recommended service intervals to ensure longevity and reliability.
Maintenance and Service
This section provides guidelines for maintaining and servicing the 47RH transmission. Learn about fluid requirements, common issues, and recommended service intervals to ensure longevity and reliability.
Fluid Requirements
- Requires Dexron III/Mercon ATF
- Fluid capacity: 12-14 quarts (including torque converter)
- Regular fluid changes recommended every 30,000 miles
- Use of high-quality filters for optimal performance
Common Issues
- Potential for valve body wear over time
- Shift solenoid failures in high-mileage units
- Overheating under extreme loads
- Regular inspections recommended to prevent issues
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Transmission Specifications
Overview
- Type
- Automatic Transmission
- Configuration
- 4-Speed with Overdrive
- Platform
- Dodge RAM-2500 (1994-2002)
- Material
- Cast Aluminum Housing
- Location
- Rear-Wheel Drive Configuration
Dimensions
- Length
- 29.5 inches (749 mm)
- Width
- 20.3 inches (516 mm)
- Height
- 17.8 inches (452 mm)
- Weight
- 220 lbs (99.8 kg)
- input Shaft Length
- 7.5 inches (190.5 mm)
- Output Shaft Length
- 12.2 inches (310 mm)
- Bellhousing Diameter
- 14.5 inches (368 mm)
Materials
- Housing
- Cast Aluminum
- Gears
- Hardened Steel
- Clutch Plates
- Composite Friction Material
- Seals
- Nitrile Rubber
- Fluid
- ATF+4 Automatic Transmission Fluid
Features
- Performance
-
- Lockup Torque Converter
- Overdrive for Fuel Efficiency
- Heavy-Duty Design for Towing
- Electronic Governor Pressure Control
- Durability
-
- Reinforced Gear Sets
- High-Capacity Cooling System
- Robust Clutch Packs
- Sealed Bearings
- Control
-
- Hydraulic Valve Body
- Electronic Shift Solenoids
- Manual Shift Capability
- Adaptive Shift Logic
- Compatibility
-
- Designed for Cummins Diesel Engines
- Supports 4x4 Transfer Case
- Integrated with Dodge PCM
- Compatible with Aftermarket Upgrades
- Safety
-
- Fail-Safe Mode
- Overheat Protection
- Fluid Level Sensor
- Neutral Safety Switch
Safety Features
- Fail Safe
-
- Limps Home Mode
- Default Gear Engagement
- Overheat Protection
-
- Temperature Sensor
- Fluid Cooling System
- Shift interlock
-
- Neutral Safety Switch
- Brake-Shift Interlock
Comfort Features
- Smooth Shifting
-
- Adaptive Shift Logic
- Hydraulic Dampening
- Noise Reduction
-
- Isolated Mounting Points
- Precision Gear Alignment
- Ease Of Use
-
- Push-Button Overdrive
- Simple Maintenance Access
- Climate Control
-
- Integrated Transmission Cooler
- Thermostatically Controlled Fluid Flow
Accessories
- Cooling
-
- External Transmission Cooler
- Auxiliary Fan Kit
- Temperature Gauge
- Performance
-
- Shift Improvement Kit
- Heavy-Duty Torque Converter
- Reinforced Flex Plate
- Maintenance
-
- Transmission Service Kit
- Fluid Pump
- Filter and Gasket Set
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Fluid and Filter Replacement
- Band Adjustment
- Seal Inspection
- Governor Pressure Check
- Shift Solenoid Testing
- Maintenance Notes
- Use only ATF+4 fluid. Avoid overheating during heavy towing.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Parts and Labor
- Powertrain
- Miles: 60,000Years: 5Coverage: Transmission Components
- Corrosion
- Miles: 100,000Years: 7Coverage: Housing and Seals
- Extended
- Miles: 120,000Years: 10Coverage: Limited Component Coverage
Production Details
- Manufacturer
- Chrysler Corporation
- Manufacturing Process
-
- Casting for Housing
- CNC Machining for Gears
- Heat Treatment for Durability
- Precision Assembly
- Quality Control
- Testing: Pressure Testing, Shift Pattern Verification, Durability Simulationinspection: Dimensional Accuracy, Material Hardness, Seal Integrity
- Sustainability
-
- Recyclable Materials
- Energy-Efficient Manufacturing
- Waste Reduction Programs
- Production Metrics
- Units Per Year: Approximately 50,000Defect Rate: Less than 0.5%Lead Time: 4-6 Weeks
Service Information for 47rh transmission Service
Maintenance and service requirements specific to this component
- Replace Transmission Fluid
- Replace Filter and Gasket
- Inspect Seals and Gaskets
- Check Governor Pressure
- Test Shift Solenoids
Use only ATF+4 fluid for optimal performance.
- Adjust Bands
- Inspect Torque Converter
- Check Transmission Mounts
- Test Electronic Controls
- Flush Cooling System
Ensure proper band tension to avoid slipping.
- Overhaul Transmission
- Replace Clutch Packs
- Inspect Gear Sets
- Replace Seals and Bearings
- Test Hydraulic System
Major service requires specialized tools and expertise.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 47RH transmission compatible with other Dodge models?
Is the 47RH transmission compatible with other Dodge models?
The 47RH transmission is specifically designed for the 1994-2002 Dodge RAM 2500 with a 5.9L Cummins diesel engine. While it shares similarities with other Chrysler transmissions, compatibility with other models is limited due to differences in mounting points, torque converters, and electronic controls. Always verify compatibility using your vehicle's VIN and consult a professional before attempting cross-model installations.
Q2 What are the maintenance requirements for the 47RH transmission?
What are the maintenance requirements for the 47RH transmission?
The 47RH transmission requires regular maintenance to ensure longevity. This includes changing the transmission fluid and filter every 30,000 to 50,000 miles, inspecting for leaks, and monitoring fluid levels. Use only ATF+4 or equivalent fluid. Additionally, check the torque converter and valve body for wear and tear. Proper maintenance prevents overheating and ensures smooth shifting.
Q3 How do I install or replace the 47RH transmission?
How do I install or replace the 47RH transmission?
To install or replace the 47RH transmission, first, disconnect the battery and remove the driveshaft, exhaust components, and crossmember. Support the transmission with a jack, disconnect the cooler lines, wiring harness, and shift linkage. Lower the transmission carefully. For installation, reverse the process, ensuring proper alignment of the torque converter and bellhousing bolts. Torque all bolts to factory specifications and refill with the correct fluid.
Q4 What are common troubleshooting steps for the 47RH transmission?
What are common troubleshooting steps for the 47RH transmission?
Common issues with the 47RH include slipping gears, delayed shifting, and fluid leaks. Start by checking the fluid level and condition. Inspect the transmission cooler lines and filter for blockages. Use a diagnostic scanner to check for error codes. If the problem persists, inspect the valve body, solenoids, and torque converter. Professional diagnosis may be required for complex issues.
Q5 How can I optimize the performance of my 47RH transmission?
How can I optimize the performance of my 47RH transmission?
To optimize the 47RH transmission, consider upgrading the valve body for improved shift firmness and response. Install an auxiliary transmission cooler to reduce heat buildup, especially under heavy loads. Use high-quality synthetic ATF+4 fluid and ensure proper fluid levels. Regularly inspect and maintain the transmission to prevent wear and tear, ensuring peak performance.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1994-2002 Dodge RAM 2500 47RH Transmission Service Manual
Coming SoonThis manual provides detailed instructions for servicing, repairing, and maintaining the 47RH transmission, including torque specifications and diagnostic procedures.
Technical Service Bulletin for 47RH Transmission Updates
Coming SoonThis bulletin outlines common issues, updates, and fixes for the 47RH transmission, including software updates and part replacements.
47RH Transmission Parts and Accessories Catalog
Coming SoonThis catalog lists all compatible parts and accessories for the 47RH transmission, including rebuild kits, torque converters, and shift kits.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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