The 1986 Ford Bronco II featured a manual transmission option that provided drivers with enhanced control and driving engagement. This compact SUV was equipped with either a 5-speed manual transmission or optional automatic transmission, offering rugged performance for both on-road and off-road driving conditions. Below are key sections covering specifications, operation, maintenance, troubleshooting, and technical details.
The 1986 Bronco II manual transmission was designed for durability and reliable performance in various driving conditions.
| Specification | Details |
|---|---|
| Transmission Type | 5-speed manual overdrive |
| Model Code | Mitsubishi FM145 or similar variant |
| Gear Count | 5 forward, 1 reverse |
| Synchronization | All forward gears synchronized |
| Case Material | Aluminum alloy |
| Weight | Approximately 85-95 lbs |
| Mounting | Bolt-on transfer case for 4WD models |
| Compatibility | 2.8L V6 engine |
| Production Years | 1984-1990 for Bronco II |
Understanding the gear ratios and proper shifting techniques ensures optimal performance and transmission longevity.
WARNING! Always depress clutch fully when shifting. Do not force gears or grind during engagement.
The standard H-pattern shifting layout with reverse gear position requiring special engagement.
| Gear Position | Location | Engagement Method |
|---|---|---|
| 1st Gear | Top Left | Push left and forward |
| 2nd Gear | Bottom Left | Push left and backward |
| 3rd Gear | Top Center | Push forward from neutral |
| 4th Gear | Bottom Center | Push backward from neutral |
| 5th Gear | Top Right | Push right and forward |
| Reverse | Bottom Right | Push right, then down (may require lifting collar) |
NOTE: Some models may require pressing down on shift lever or lifting reverse lockout collar.
Regular maintenance ensures transmission reliability and extends service life.
Proper fluid selection is critical for transmission performance and longevity.
| Fluid Type | Specification | Capacity |
|---|---|---|
| Gear Oil | 75W-90 GL-4/GL-5 | 3.2 quarts |
| Transfer Case | ATF Dexron II/Mercon | 2.5 pints |
| Clutch Hydraulic | DOT 3 Brake Fluid | As needed |
CAUTION! Use only specified fluids. Incorrect fluid types can cause premature wear and failure.
The clutch system provides smooth engagement between engine and transmission.
Maintenance: Check fluid level in clutch master cylinder reservoir monthly. Bleed system if spongy pedal feel develops.
Typical problems encountered with 1986 Bronco II manual transmissions.
| Issue | Frequency | Typical Causes |
|---|---|---|
| Hard Shifting | Common | Worn synchronizers, low fluid, linkage issues |
| Gear Grinding | Moderate | Synchro wear, clutch adjustment, fluid type |
| Jumping Out of Gear | Less Common | Worn detents, shift forks, bearings |
| Noise in Neutral | Occasional | Input shaft bearing, pilot bearing |
| Fluid Leaks | Common | Seals, gaskets, output shaft seals |
Diagnostic procedures for common transmission problems.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Hard to shift into gear | Clutch not disengaging fully | Adjust clutch, bleed hydraulic system, check master cylinder |
| Gear grinding during shifts | Worn synchronizers | Replace synchronizers, check fluid level and type |
| Transmission jumps out of gear | Worn shift forks or detents | Rebuild transmission, replace worn components |
| Whining noise in all gears | Worn bearings | Replace input/output shaft bearings |
| Fluid leakage | Worn seals or gaskets | Replace output shaft seals, extension housing gasket |
Basic repair and maintenance procedures for DIY enthusiasts.
WARNING! Transmission work requires proper tools and mechanical knowledge. Use jack stands and follow safety procedures.
Manufacturer-issued technical updates and service recommendations.
For complete technical service bulletins, contact Ford dealership or authorized service center.