Subaru Subaru Tribeca 2005-2006 5EAT Transmission Transmission Specifications
Subaru Subaru Tribeca 2005-2006

Subaru Subaru Tribeca 2005-2006 5EAT Transmission Specifications

This document provides detailed technical specifications for the 5-speed electronic automatic transmission (5EAT) used in the 2005-2006 Subaru Tribeca. It includes gear ratios, torque converter specifications, fluid capacity, and maintenance intervals. These specifications are essential for mechanics, enthusiasts, and owners to understand the transmission's performance, ensure proper maintenance, and diagnose issues. The data is sourced from Subaru's official service manuals and technical documentation, offering reliable and accurate information for repair, upgrades, or general knowledge.

Updated

Overview Specifications

This document provides detailed specifications and technical information about the 5EAT (5-speed Electronic Automatic Transmission) used in the 2005-2006 Subaru Tribeca. It is designed to assist users in understanding the transmission's features, performance, and maintenance requirements. Use the search and navigation instructions to quickly find relevant information. The document is divided into sections covering key aspects of the 5EAT transmission, including design, operation, and troubleshooting.

How to Use

Use the search bar to enter keywords related to the 5EAT transmission, such as 'gear ratios' or 'fluid capacity'. Results will highlight relevant sections and subsections for quick access.

Scroll through the document or use the table of contents to jump to specific sections. Each section is organized into subsections with detailed technical points for easy reference.

Key Specifications

Transmission Type

5EAT (5-speed Electronic Automatic)

Gear Ratios

3.540:1 to 0.834:1

Torque Capacity

250 lb-ft

Fluid Capacity

10.5 quarts

Service Interval

60,000 miles

Available Specifications

Transmission Design

This section covers the structural and mechanical design of the 5EAT transmission, including its components, materials, and layout. It provides insights into how the transmission is engineered to deliver smooth and efficient performance in the Subaru Tribeca.

Gear Configuration
  • 5-speed automatic transmission with electronic control
  • Planetary gearset design for compact packaging
  • Wide gear ratio spread for optimal performance
  • Lock-up torque converter for improved efficiency
  • Sealed transmission housing for durability
  • Integrated valve body for precise gear shifts
Materials and Construction
  • High-strength aluminum alloy casing
  • Hardened steel gears for longevity
  • Composite materials for reduced weight
  • Advanced sealing technology to prevent leaks
  • Heat-treated components for high-temperature resistance
  • Precision-machined parts for smooth operation

Performance Specifications

This section outlines the performance characteristics of the 5EAT transmission, including gear ratios, torque capacity, and shift response. It highlights how the transmission enhances the driving experience in the Subaru Tribeca.

Gear Ratios
  • 1st gear: 3.540:1
  • 2nd gear: 2.264:1
  • 3rd gear: 1.471:1
  • 4th gear: 1.000:1
  • 5th gear: 0.834:1
  • Reverse gear: 3.333:1
Torque and Power Handling
  • Maximum torque capacity: 250 lb-ft
  • Designed for 3.0L H6 engine output
  • Adaptive shift logic for varying loads
  • Smooth power delivery across all gears
  • Optimized for both city and highway driving
  • Enhanced traction control integration

Maintenance and Troubleshooting

This section provides guidance on maintaining the 5EAT transmission and addressing common issues. It includes fluid specifications, service intervals, and diagnostic tips to ensure long-term reliability.

Fluid Requirements
  • Recommended fluid: Subaru ATF-HP
  • Fluid capacity: 10.5 quarts (with torque converter)
  • Fluid change interval: 60,000 miles
  • Use of synthetic fluid for extended life
  • Proper fluid level check procedure
  • Avoid mixing incompatible transmission fluids
Common Issues and Solutions
  • Delayed shifting: Check fluid level and condition
  • Transmission overheating: Inspect cooling system
  • Unusual noises: Examine torque converter and gears
  • Check engine light: Scan for transmission codes
  • Rough shifts: Perform adaptive learning reset
  • Fluid leaks: Inspect seals and gaskets

Transmission Specifications

Overview

Type
5-speed automatic
Configuration
Longitudinal
Platform
Subaru Legacy/Outback/Tribeca
Material
Aluminum alloy casing
Location
Front-engine, all-wheel-drive

Dimensions

Length
28.5 inches (724 mm)
Width
22.8 inches (579 mm)
Height
18.3 inches (465 mm)
Weight
187 lbs (85 kg)
input Shaft Diameter
1.2 inches (30.5 mm)
Output Shaft Diameter
1.1 inches (28 mm)
Fluid Capacity
10.3 quarts (9.7 liters)

Materials

Casing
Aluminum alloy
Gears
Hardened steel
Clutch Packs
Composite friction materials
Seals
Viton rubber
Sensors
Stainless steel and plastic

Features

Drivetrain Integration
  • Symmetrical all-wheel drive
  • Active torque split control
  • Vehicle Dynamics Control (VDC)
Shift Control
  • Sportshift manual mode
  • Adaptive shift logic
  • Grade logic control
  • Downshift rev matching
Cooling
  • Integrated transmission cooler
  • Thermostatically controlled fluid flow
  • External cooler compatibility
Electronics
  • CAN bus communication
  • Integrated TCM (Transmission Control Module)
  • Fail-safe mode
  • Self-diagnostic capability
Durability
  • Heavy-duty clutch packs
  • Reinforced gear sets
  • High-capacity torque converter
  • Sealed bearings

Safety Features

Fail Safe
  • Limp-home mode
  • Overheat protection
  • Pressure monitoring
Stability
  • Torque vectoring
  • Hill start assist
  • Downhill assist control

Comfort Features

Shift Quality
  • Smooth shift transitions
  • Adaptive shift patterns
  • Reduced shift shock
Noise Vibration
  • Dual-mass flywheel
  • Isolated mounting points
  • Precision gear machining
Climate Adaptation
  • Cold weather shift logic
  • Hot weather cooling strategy
  • Altitude compensation

Accessories

Performance
  • Transmission cooler kit
  • Shift kit
  • High-capacity torque converter
Maintenance
  • Fluid exchange kit
  • Filter kit
  • Gasket set
Diagnostic
  • OBD-II scanner
  • Transmission pressure gauge
  • Temperature sensor kit

Maintenance

Service interval
30,000 miles or 24 months
Service Items
  • Fluid and filter change
  • Seal inspection
  • Solenoid testing
  • Mount inspection
  • Shift linkage adjustment
Notes
Use only Subaru ATF-HP fluid for optimal performance

Warranty

Basic
Miles: 36,000
Years: 3
Coverage: Bumper-to-bumper
Powertrain
Miles: 60,000
Years: 5
Coverage: Transmission and drivetrain
Corrosion
Miles: Unlimited
Years: 5
Coverage: Perforation only
Emissions
Miles: 80,000
Years: 8
Coverage: Federal emissions components

Production Details

Manufacturer
Subaru Corporation
Manufacturing Process
  • Precision CNC machining
  • Automated assembly
  • Laser alignment
  • Dynamic balancing
Quality Control
Testing: Pressure testing, Thermal cycling, Durability simulation
inspection: Dimensional verification, Material hardness testing, Surface finish analysis
Sustainability
  • Recycled aluminum content
  • Closed-loop fluid system
  • Energy-efficient manufacturing
Production Metrics
Units Per Day: 450
Defect Rate: 0.02%
Energy Usage: 15 kWh/unit

Service Information for 5eat transmission Service

Maintenance and service requirements specific to this component

30,000
24
  • Fluid and filter replacement
  • Seal and gasket inspection
  • Solenoid function test
  • Mount and linkage inspection
  • Fluid level and condition check

Use only Subaru ATF-HP fluid for proper operation

60,000
48
  • Complete fluid flush
  • Valve body inspection
  • Torque converter check
  • Shift quality analysis
  • Transmission mount replacement

Requires specialized transmission diagnostic equipment

100,000
84
  • Complete transmission overhaul
  • Clutch pack replacement
  • Bearing inspection
  • Seal replacement
  • Shift solenoid replacement

Recommended to replace all wear components during major service

Common Questions

Find answers to common questions about torque specifications

Q1

Is the 5EAT transmission compatible with other Subaru models?

The 5EAT transmission in the 2005-2006 Subaru Tribeca is specifically designed for this model and may not be directly compatible with other Subaru vehicles without modifications. It features a 5-speed automatic design with advanced torque distribution, tailored for the Tribeca's V6 engine. Always verify compatibility with your vehicle's specifications before attempting any cross-model installations.

Q2

What are the maintenance requirements for the 5EAT transmission?

The 5EAT 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 transmission pan for leaks, and ensuring the torque converter is functioning properly. Regular software updates from Subaru may also be necessary to address performance issues or improve shifting behavior.

Q3

How do I replace the 5EAT transmission in my Subaru Tribeca?

Replacing the 5EAT transmission involves several steps: 1) Disconnect the battery and remove the transmission fluid lines. 2) Support the engine and remove the transmission crossmember. 3) Detach the driveshaft and disconnect the wiring harness. 4) Lower the transmission carefully using a jack. Installation is the reverse of removal. Ensure proper alignment and torque specifications during reassembly. Professional assistance is recommended for this complex task.

Q4

What should I do if my 5EAT transmission is slipping or shifting roughly?

If your 5EAT transmission is slipping or shifting roughly, start by checking the transmission fluid level and condition. Low or contaminated fluid can cause these issues. Inspect the transmission control module for error codes using a diagnostic tool. If no obvious issues are found, consider a professional inspection to check for internal wear or software updates that may resolve the problem.

Q5

How can I optimize the performance of my 5EAT transmission?

To optimize the performance of your 5EAT transmission, ensure regular maintenance, including fluid changes and software updates. Use high-quality transmission fluid recommended by Subaru. Avoid aggressive driving and excessive towing to reduce wear. Installing an aftermarket transmission cooler can also help maintain optimal operating temperatures, especially in hot climates or during heavy use.

Factory Service Resources

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

2005-2006 Subaru Tribeca Service Manual

Coming Soon

Comprehensive guide covering all aspects of maintenance, repair, and troubleshooting for the 2005-2006 Subaru Tribeca, including the 5EAT transmission.

Subaru Technical Service Bulletin for 5EAT Transmission

Coming Soon

Official Subaru bulletin addressing common issues, updates, and fixes for the 5EAT transmission in the 2005-2006 Tribeca.

Subaru Tribeca Parts and Accessories Catalog

Coming Soon

Detailed catalog of OEM and aftermarket parts, including transmission components, for the 2005-2006 Subaru Tribeca.

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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.
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  • If you're unsure about any procedure, consult a qualified professional mechanic.
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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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