Mazda Mazda B-Series 1998-2006 5R55 Transmission Transmission Specifications
Mazda Mazda B-Series 1998-2006

Mazda Mazda B-Series 1998-2006 5R55 Transmission Specifications

This document provides detailed technical specifications for the 5R55 transmission used in the 1998-2006 Mazda B-Series trucks. It includes gear ratios, torque converter specifications, fluid capacity, and shift patterns. These specifications are essential for mechanics, enthusiasts, and owners performing maintenance, repairs, or upgrades. The data ensures proper compatibility and performance, helping users make informed decisions about servicing or modifying their vehicles. Whether you're troubleshooting transmission issues or planning a rebuild, this resource offers valuable insights into the 5R55 transmission's design and operation.

Updated

Overview Specifications

This document provides detailed specifications and technical information about the 5R55 transmission used in the 1998-2006 Mazda B-Series. It is designed to assist technicians, enthusiasts, and owners in understanding the transmission's features, maintenance, and troubleshooting. The content is organized into sections for easy navigation and quick reference. Use the search and navigation instructions to efficiently find the information you need.

How to Use

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Key Specifications

Transmission Type

5-speed automatic

Gear Ratios

1st: 3.22, 2nd: 2.29, 3rd: 1.54, 4th: 1.00, 5th: 0.71

Fluid Capacity

10.5 quarts (with torque converter)

Weight

Approx. 150 lbs

Compatibility

1998-2006 Mazda B-Series

Available Specifications

General Specifications

This section covers the basic specifications of the 5R55 transmission, including its design, compatibility, and key features. It provides an overview of the transmission's technical aspects and its application in the Mazda B-Series.

Design and Compatibility
  • 5-speed automatic transmission
  • Designed for rear-wheel-drive vehicles
  • Compatible with 1998-2006 Mazda B-Series trucks
  • Integrated overdrive for fuel efficiency
  • Electronic control module for precise shifting
  • Adaptive shift strategy for improved performance
Key Features
  • Compact and lightweight design
  • Durable construction for long-term reliability
  • Smooth and responsive shifting
  • Enhanced cooling system for optimal performance
  • Low maintenance requirements
  • Compatible with various engine configurations

Maintenance and Service

This section provides detailed information on maintaining and servicing the 5R55 transmission. It includes recommended service intervals, common maintenance tasks, and tips for ensuring the transmission's longevity.

Service Intervals
  • Fluid change every 30,000 to 60,000 miles
  • Inspect transmission fluid level monthly
  • Replace transmission filter during fluid changes
  • Check for leaks and damage during routine maintenance
  • Perform diagnostic scans for error codes
  • Adjust shift linkage as needed
Common Maintenance Tasks
  • Flush transmission fluid to remove contaminants
  • Replace worn seals and gaskets
  • Inspect and replace solenoids if necessary
  • Check and adjust transmission bands
  • Clean and inspect the transmission cooler
  • Ensure proper torque converter operation

Troubleshooting and Repairs

This section addresses common issues with the 5R55 transmission and provides guidance on troubleshooting and repairs. It includes diagnostic tips, potential causes of problems, and recommended repair procedures.

Common Issues
  • Delayed or harsh shifting
  • Transmission slippage or no engagement
  • Fluid leaks from seals or gaskets
  • Overheating due to cooling system issues
  • Error codes related to solenoids or sensors
  • Unusual noises during operation
Diagnostic Tips
  • Use a diagnostic scanner to read error codes
  • Check transmission fluid level and condition
  • Inspect wiring and connectors for damage
  • Test solenoid operation and resistance
  • Monitor transmission temperature during operation
  • Perform a road test to identify shifting issues

Transmission Specifications

Overview

Type
5-speed automatic
Configuration
Rear-wheel drive
Platform
Ford Ranger/Mazda B-Series
Material
Aluminum casing with steel internals
Location
Midship, longitudinal
Model Years
1998-2006

Dimensions

Length
28.5 inches (724 mm)
Width
22.8 inches (579 mm)
Height
18.3 inches (465 mm)
Weight
165 lbs (75 kg)
input Shaft Length
7.2 inches (183 mm)
Output Shaft Length
10.5 inches (267 mm)
Fluid Capacity
10.5 quarts (9.9 liters)

Materials

Casing
Aluminum alloy
Gears
Hardened steel
Clutch Packs
Composite friction materials
Seals
Viton rubber
Solenoids
Copper windings with plastic housing

Features

Shift Control
  • Electronic shift solenoid control
  • Adaptive shift programming
  • Manual shift mode capability
Cooling
  • Integrated transmission cooler
  • Auxiliary cooler compatibility
  • Thermostatically controlled flow
Durability
  • Hardened gear sets
  • High-capacity clutch packs
  • Reinforced output shaft
Performance
  • Wide gear ratio spread
  • Torque converter lockup
  • Smooth shift transitions
Diagnostics
  • OBD-II compatible
  • Self-diagnostic capabilities
  • Shift solenoid monitoring

Safety Features

Fail Safe Mode
  • Limp-home mode activation
  • Default gear selection
Overheat Protection
  • Temperature monitoring
  • Reduced power mode
Mechanical Protection
  • Shear pin protection
  • Over-torque protection

Comfort Features

Shift Quality
  • Smooth upshifts
  • Minimized downshift shock
  • Adaptive shift timing
Noise Reduction
  • Helical cut gears
  • Isolated mounting points
  • Dampened torque converter
Drivability
  • Optimized gear ratios
  • Seamless torque converter lockup
  • Responsive throttle input

Accessories

Cooling
  • Auxiliary transmission cooler
  • Cooler line kit
  • Temperature gauge
Performance
  • Shift improvement kit
  • High-capacity torque converter
  • Reinforced output shaft
Maintenance
  • Transmission service kit
  • Fluid exchange pump
  • Diagnostic scanner

Maintenance

Service interval
30,000 miles or 24 months
Service Items
  • Fluid and filter replacement
  • Pan gasket inspection
  • Solenoid function test
  • Shift linkage adjustment
  • Cooler line inspection
Maintenance Notes
Use only Mercon V transmission fluid. Avoid overheating to prolong lifespan.

Warranty

Basic
Miles: 36,000
Years: 3
Coverage: Parts and labor
Powertrain
Miles: 60,000
Years: 5
Coverage: Major components
Corrosion
Miles: Unlimited
Years: 5
Coverage: Perforation only
Emissions
Miles: 80,000
Years: 8
Coverage: Federal emissions components

Production Details

Manufacturer
Ford Motor Company
Manufacturing Process
  • Casting of aluminum casing
  • CNC machining of gear sets
  • Automated assembly
  • Precision testing
Quality Control
Pressure Testing: Casing integrity
Performance Testing: Shift quality and durability
Leak Testing: Seal integrity
Sustainability Practices
  • Recycled aluminum usage
  • Waste reduction in machining
  • Energy-efficient assembly
Production Metrics
Units Per Year: Approx. 150,000
Defect Rate: Less than 0.5%
Production Time: 2.5 hours per unit

Service Information for 5r55 transmission Service

Maintenance and service requirements specific to the 5r55 transmission

30,000
24
  • Replace transmission fluid and filter
  • Inspect pan gasket for leaks
  • Check solenoid operation
  • Adjust shift linkage
  • Inspect cooler lines for damage

Use only Mercon V fluid for optimal performance.

60,000
48
  • Perform full fluid flush
  • Inspect clutch pack wear
  • Test torque converter lockup
  • Check for internal wear particles
  • Verify shift timing and quality

Consider replacing the transmission pan gasket during this service.

100,000
84
  • Complete transmission overhaul
  • Replace worn clutch packs
  • Inspect and replace solenoids if necessary
  • Check and replace output shaft seals
  • Perform full diagnostic scan

Major service interval; recommend professional inspection and repair.

Common Questions

Find answers to common questions about torque specifications

Q1

Is the 5R55 transmission compatible with all 1998-2006 Mazda B-Series models?

The 5R55 transmission is compatible with most 1998-2006 Mazda B-Series models, particularly those equipped with the 4.0L V6 engine. However, compatibility may vary depending on the specific model year and drivetrain configuration. Always verify the transmission model and engine pairing before installation. For precise compatibility, consult the vehicle's service manual or a Mazda dealership.

Q2

What are the maintenance requirements for the 5R55 transmission?

The 5R55 transmission requires regular maintenance to ensure optimal performance. This includes checking and replacing the transmission fluid every 30,000 to 60,000 miles, inspecting the filter for debris, and ensuring the transmission cooler is functioning properly. Additionally, monitor for signs of wear, such as slipping gears or delayed shifts, and address issues promptly to avoid costly repairs.

Q3

How do I install or replace the 5R55 transmission in a 1998-2006 Mazda B-Series?

To install or replace the 5R55 transmission, first, disconnect the battery and drain the transmission fluid. Remove the driveshaft, exhaust components, and crossmember. Disconnect the transmission cooler lines, wiring harness, and shift linkage. Support the transmission with a jack, remove the bellhousing bolts, and carefully lower the transmission. Reverse the steps for installation, ensuring proper alignment and torque specifications.

Q4

What are common troubleshooting steps for the 5R55 transmission?

Common issues with the 5R55 transmission include slipping gears, harsh shifts, and fluid leaks. Begin by checking the transmission fluid level and condition. Inspect for leaks around the pan, cooler lines, and seals. Use a diagnostic scanner to check for error codes. If issues persist, inspect the valve body, solenoids, and torque converter. Professional diagnosis may be required for complex problems.

Q5

How can I optimize the performance of the 5R55 transmission?

To optimize the 5R55 transmission's performance, use high-quality transmission fluid and replace it regularly. Install an auxiliary transmission cooler to reduce heat buildup, especially under heavy loads. Ensure the shift linkage is properly adjusted and the throttle position sensor is functioning correctly. Avoid aggressive driving and excessive towing to prolong the transmission's lifespan.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

1998-2006 Mazda B-Series Service Manual

Coming Soon

Comprehensive guide covering maintenance, repair, and troubleshooting for the Mazda B-Series, including the 5R55 transmission.

5R55 Transmission Technical Service Bulletin

Coming Soon

Official bulletin addressing common issues, updates, and fixes for the 5R55 transmission in Mazda B-Series vehicles.

Mazda B-Series Parts and Accessories Catalog

Coming Soon

Detailed catalog of OEM and aftermarket parts for the 1998-2006 Mazda B-Series, including transmission components.

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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.
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About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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