The Acura Legend manual transmission is a 5-speed gearbox designed for smooth shifting and reliable performance. This comprehensive guide covers essential components, specifications, maintenance procedures, and troubleshooting for the manual transmission system. Below are key sections for parts identification, installation guidelines, maintenance schedules, and common issues.
Key components of the Acura Legend manual transmission system include gear sets, synchronizers, shift forks, and housing assemblies.
| Component | Description |
|---|---|
| Transmission Case | Aluminum housing containing all internal components |
| Input Shaft | Transfers engine power to transmission gears |
| Output Shaft | Delivers power to the driveshaft |
| Counter Shaft | Intermediate shaft for gear reduction |
| Shift Forks | Engage specific gears during shifting |
| Synchronizer Rings | Match gear speeds for smooth engagement |
| Bearings | Support rotating shafts and reduce friction |
| Seals | Prevent fluid leaks at shaft exits |
| Shift Linkage | Connects shifter to transmission |
| Clutch Assembly | Engages and disengages power transfer |
Standard gear ratios and technical specifications for Acura Legend manual transmissions.
The clutch system components work together to engage and disengage power from the engine to the transmission.
WARNING! Always replace clutch components as a set to ensure proper operation and longevity.
Precision components that transfer shifter movement to transmission gear selection.
| Part | Function |
|---|---|
| Shift Lever | Driver interface for gear selection |
| Shift Cables | Connect shifter to transmission |
| Shift Linkage Bushings | Reduce play and vibration |
| Shift Gate Mechanism | Guides shifter through pattern |
| Shift Knob | Ergonomic grip for shifting |
| Shift Boot | Prevents debris entry and reduces noise |
Synchronizers match gear speeds for smooth, no-grind shifting between gears.
Proper fluid selection and maintenance are critical for transmission longevity.
CAUTION! Use only recommended fluids to prevent synchronizer damage and premature wear.
Step-by-step guide for proper transmission installation and component replacement.
WARNING! Transmission is heavy; use proper lifting equipment and assistance.
Recommended maintenance intervals for optimal transmission performance.
| Service | Interval | Procedure |
|---|---|---|
| Fluid Change | 30,000 miles | Drain and refill with Honda MTF |
| Clutch Inspection | 60,000 miles | Check pedal free play and engagement |
| Shift Linkage Check | 15,000 miles | Inspect for wear and proper adjustment |
| Transmission Mounts | 100,000 miles | Inspect for cracking or deterioration |
| Seal Inspection | Oil changes | Check for leaks at input/output shafts |
Typical wear items and failure points in Acura Legend manual transmissions.
Genuine Acura part numbers for common replacement components.
| Component | Part Number |
|---|---|
| Complete Transmission Assembly | ML4A-100-000 |
| Clutch Disc | 22100-PY3-016 |
| Pressure Plate | 22300-PY3-016 |
| Throwout Bearing | 22850-PY3-016 |
| Input Shaft Bearing | 91001-PY3-016 |
| Shift Linkage Bushings | 54212-SD4-003 |
| Transmission Mount | 50810-SD4-000 |
| Drain Plug Washer | 94109-14000 |
Common transmission issues and their solutions.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Grinding when shifting | Worn synchronizers | Replace synchronizer assembly |
| Difficulty engaging gear | Clutch not disengaging | Bleed clutch system or replace components |
| Transmission jumps out of gear | Worn shift forks or detents | Replace shift mechanism components |
| Whining noise in gear | Worn bearings | Replace input/output shaft bearings |
| Leaking fluid | Worn seals | Replace input/output shaft seals |
| Sloppy shifter feel | Worn linkage bushings | Replace shift linkage bushings |
| Noise in neutral | Input shaft bearing | Replace input shaft bearing |
Professional Service: For complex internal repairs, consult a certified transmission specialist.
Parts Support: Contact Acura dealership or authorized parts distributor for genuine components.