Acura CL 1997-1999 B7XA Transmission Specifications
Detailed technical specifications and documentation for the B7XA automatic transmission system used in the 1997-1999 Acura CL. This document covers transmission fluid requirements, torque converter specifications, gear ratios, shift solenoid operation, and diagnostic procedures specific to the B7XA transmission.
B7XA Transmission Specifications Overview Specifications
This document provides a comprehensive guide to the specifications and operational details of the B7XA transmission used in the 1997-1999 Acura CL. It includes key specifications, maintenance recommendations, troubleshooting tips, and detailed technical information. Use the search functionality to quickly find specific information, and navigate through the sections to explore detailed transmission components and procedures.
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Key Specifications
Transmission Type
5-Speed Automatic
Torque Capacity
220 Nm
Fluid Capacity
4.5 liters
Weight
Approx. 120 kg
Recommended Fluid
ATF DW-1
Available Specifications
Transmission Overview
This section provides an introduction to the B7XA transmission, including its key features, design, and applications in the 1997-1999 Acura CL. It covers the transmission's architecture, gear ratios, and compatibility with the vehicle's engine.
Transmission Overview
This section provides an introduction to the B7XA transmission, including its key features, design, and applications in the 1997-1999 Acura CL. It covers the transmission's architecture, gear ratios, and compatibility with the vehicle's engine.
Key Features
- 5-speed automatic transmission
- Lock-up torque converter
- Electronically controlled shift logic
- Adaptive shift programming
- Maximum torque capacity: 220 Nm
- Weight: Approximately 120 kg
Gear Ratios
- 1st gear: 2.697
- 2nd gear: 1.440
- 3rd gear: 0.970
- 4th gear: 0.690
- Reverse gear: 1.880
Transmission Operation and Functionality
This section explains how the B7XA transmission operates, including its shifting mechanisms, torque converter functionality, and electronic controls. It also covers the transmission's behavior under various driving conditions.
Transmission Operation and Functionality
This section explains how the B7XA transmission operates, including its shifting mechanisms, torque converter functionality, and electronic controls. It also covers the transmission's behavior under various driving conditions.
Shifting Mechanism
- Hydraulically actuated clutch packs
- Solenoid-controlled shift valves
- Electronic throttle valve integration
- Adaptive learning for driver habits
- Manual shift mode available in some trims
Torque Converter
- Lock-up clutch for improved fuel efficiency
- Torque converter stall speed: 1,800 RPM
- Torque converter replacement interval: 150,000 km
- Requires ATF DW-1 fluid for cooler operation
Maintenance and Service
This section outlines the recommended maintenance and service procedures for the B7XA transmission, including fluid changes, filter replacements, and inspection schedules.
Maintenance and Service
This section outlines the recommended maintenance and service procedures for the B7XA transmission, including fluid changes, filter replacements, and inspection schedules.
Service Intervals
- Transmission fluid change: Every 60,000 km
- Transmission filter replacement: Every 30,000 km
- Pan gasket replacement: Every 90,000 km
- Inspect cooler lines and connections: Every 30,000 km
Fluid Specifications
- Recommended fluid: ATF DW-1
- Fluid capacity: 4.5 liters (including filter)
- Fluid temperature range: -40°C to 120°C
- Use only genuine or OEM-approved fluid
Troubleshooting and Repair
This section provides guidance on diagnosing and repairing common issues with the B7XA transmission, including error codes, symptoms, and repair procedures.
Troubleshooting and Repair
This section provides guidance on diagnosing and repairing common issues with the B7XA transmission, including error codes, symptoms, and repair procedures.
Common Issues
- Slipping between gears: Low fluid level or worn clutch packs
- Delayed engagement: Faulty torque converter or solenoid pack
- Harsh shifting: Misaligned or damaged shift valves
- Transmission overheating: Clogged cooler or faulty temperature sensor
- Error codes: P0700, P0740, P0755
Diagnostic Steps
- Check transmission fluid level and condition
- Scan for trouble codes using an OBD-II scanner
- Inspect transmission pan and filter for debris
- Test solenoid pack operation
- Monitor transmission temperature during driving
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Transmission Specifications
Overview
- Type
- 4-speed automatic
- Configuration
- longitudinal
- Platform
- Acura CL (SA4)
- Material
- aluminum alloy
- Location
- front-wheel drive
Dimensions
- Length
- 23.7 inches (602 mm)
- Width
- 15.7 inches (399 mm)
- Height
- 11.8 inches (300 mm)
- Weight
- 154 lbs (69.85 kg)
- Fluid Capacity
- 3.5 quarts (3.3 liters)
- Gear Ratios
- 1st: 2.531, 2nd: 1.488, 3rd: 0.972, 4th: 0.669
- Torque Capacity
- 225 lb-ft (305 Nm)
Materials
- Transmission Case
- aluminum alloy
- Gear Set
- high-strength steel
- Torque Converter
- steel with elastomer lining
- Bearings
- steel with polyamide coatings
- Cooler Lines
- rubber-reinforced hoses
Features
- Gear Ratios
-
- 1st: 2.531
- 2nd: 1.488
- 3rd: 0.972
- 4th: 0.669
- Electronic Controls
-
- adaptive shift logic
- throttle position sensor integration
- automatic torque converter lockup
- Mechanical Components
-
- planetary gearset
- multi-disc clutch packs
- hydraulic solenoid controls
- Torque Converter
-
- lock-up clutch
- turbine dampening
- high-stall ratio
- Lubrication
-
- pressurized fluid system
- cooling circuit
- filter integrated
Safety Features
- Protective Housing
-
- reinforced aluminum case
- impact-resistant end caps
- Thermal Protection
-
- overheating protection
- temperature monitoring
- Fail-Safe Mode
-
- automatic default to neutral
- emergency start capability
- Pressure Regulation
-
- safety valves
- overflow protection
Comfort Features
- Smooth Shifting
-
- adaptive learning
- low throttle hesitation
- Noise Reduction
-
- sound-insulating materials
- vibration dampening
- Comfort Mode
-
- low-speed creep
- gradual acceleration
Accessories
- Transmission Mounts
-
- rubber isolators
- steel brackets
- Cooling Kit
-
- aluminum cooler
- high-flow hoses
- Service Kit
-
- filter
- gasket set
- fluid pan
Maintenance
- Service interval
-
- 30,000 miles (48,000 km)
- 60,000 miles (96,000 km)
- 90,000 miles (145,000 km)
- Maintenance Notes
-
- Check fluid level every 15,000 miles
- Inspect cooler lines for leaks
- Replace filter every 30,000 miles
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: parts and labor
- Powertrain
- Miles: 60,000Years: 5Coverage: transmission components
- Corrosion
- Miles: 60,000Years: 5Coverage: perforation only
- Emissions
- Miles: 80,000Years: 7Coverage: emissions-related components
Production Details
- Manufacturer
- Honda
- Manufacturing Process
-
- CNC machining
- robotic assembly
- laser welding
- Quality Control
- inspection: 100% end-of-line testingCertification: ISO 9001Testing: bench and vehicle testing
- Sustainability
-
- recyclable materials
- low-VOC paints
- energy-efficient processes
- Production Metrics
- Annual Output: 50,000 unitsLead Time: 6 weeksSupplier Localization: 70%
Service Information for B7XA Transmission Service
Maintenance and service requirements specific to this component
- Transmission fluid change
- Filter replacement
- Inspect cooler lines
- Check electrical connectors
Recommended for normal driving conditions
- Inspect clutch packs
- Check solenoid operation
- Replace transmission mounts
- Bleed hydraulic system
Special tools required for solenoid testing
- Overhaul clutch packs
- Replace torque converter
- Inspect gearset for wear
- Pressure test cooling system
Major service recommended by factory
Common Questions
Find answers to common questions about torque specifications
Q1 What is the gear ratio for the b7xa-transmission in the 1997-1999 Acura CL?
What is the gear ratio for the b7xa-transmission in the 1997-1999 Acura CL?
The b7xa-transmission in the 1997-1999 Acura CL has the following gear ratios: 1st gear - 2.785:1, 2nd gear - 1.684:1, 3rd gear - 1.071:1, 4th gear - 0.771:1, 5th gear - 0.566:1, Reverse - 2.000:1. The final drive ratio is 4.266:1.
Q2 What type of transmission fluid is recommended for the b7xa-transmission?
What type of transmission fluid is recommended for the b7xa-transmission?
Honda/Acura Genuine ATF-Z1 or equivalent automatic transmission fluid is recommended for the b7xa-transmission. Using the correct fluid ensures optimal performance and longevity of the transmission.
Q3 What is the torque capacity of the b7xa-transmission?
What is the torque capacity of the b7xa-transmission?
The b7xa-transmission is designed to handle a maximum torque input of approximately 220 lb-ft (298 Nm). Exceeding this limit may result in premature wear or failure.
Q4 How often should the transmission fluid be replaced in the b7xa-transmission?
How often should the transmission fluid be replaced in the b7xa-transmission?
Acura recommends replacing the transmission fluid every 30,000 to 60,000 miles, depending on driving conditions. Severe driving conditions, such as frequent towing or stop-and-go traffic, may require more frequent service.
Q5 What are common symptoms of a failing b7xa-transmission?
What are common symptoms of a failing b7xa-transmission?
Common symptoms include delayed or rough shifting, slipping gears, unusual noises (e.g., whining or grinding), transmission fluid leaks, and the illumination of the Check Engine or Transmission Warning light.
Q6 Can the b7xa-transmission be rebuilt, or does it need to be replaced entirely?
Can the b7xa-transmission be rebuilt, or does it need to be replaced entirely?
The b7xa-transmission can be rebuilt if the damage is not extensive. Rebuilding involves replacing worn components such as clutches, seals, and bearings. However, in cases of severe damage, a complete replacement may be necessary.
Q7 What is the proper procedure for checking the transmission fluid level in the b7xa-transmission?
What is the proper procedure for checking the transmission fluid level in the b7xa-transmission?
To check the fluid level, ensure the vehicle is on a level surface and the engine is running at operating temperature. Shift through all gears and return to Park. Remove the dipstick, wipe it clean, reinsert it, and check the fluid level. The fluid should be within the HOT marks on the dipstick.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Acura CL 1997-1999 Service Manual
Coming SoonOfficial service manual for the 1997-1999 Acura CL, including detailed procedures for maintaining and repairing the b7xa-transmission.
Transmission Fluid Specifications Guide
Coming SoonA comprehensive guide to transmission fluid types and specifications, including recommendations for the b7xa-transmission.
Common Transmission Issues and Solutions
Coming SoonA troubleshooting guide for common transmission problems, including symptoms, causes, and repair options for the b7xa-transmission.
Rebuilding the b7xa-Transmission: Step-by-Step Guide
Coming SoonDetailed instructions for rebuilding the b7xa-transmission, including part replacement and reassembly procedures.
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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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