The 1986 Isuzu Trooper II Service Manual provides comprehensive technical information for maintenance, repair, and service procedures for the 1986 Isuzu Trooper II 4WD vehicle. This manual covers engine systems (2.3L 4-cylinder gasoline), transmission (5-speed manual), 4WD system, brakes, suspension, electrical systems, and body components. Below are key sections for specifications, maintenance schedules, troubleshooting, and repair procedures.
Key technical specifications for the 1986 Isuzu Trooper II 4WD model.
| Specification | Details |
|---|---|
| Engine | 2.3L 4-cylinder gasoline, SOHC |
| Horsepower | 96 hp @ 4600 rpm |
| Torque | 123 lb-ft @ 2600 rpm |
| Transmission | 5-speed manual, 4-speed manual optional |
| Drivetrain | Part-time 4WD with 2-speed transfer case |
| Fuel System | 2-barrel carburetor |
| Brakes | Front disc, rear drum |
| Suspension | Front: Independent torsion bar, Rear: Leaf spring |
| Wheelbase | 104.3 inches |
| Curb Weight | 3,120 lbs |
Recommended maintenance intervals for optimal vehicle performance.
WARNING! Always use jack stands when working under vehicle. Use proper safety equipment.
Service procedures for the 2.3L 4-cylinder gasoline engine.
CAUTION! Allow engine to cool before performing maintenance. Disconnect battery when working on electrical components.
Service procedures for front disc and rear drum brake systems.
Front Brakes: Disc brakes, rotor thickness specification: 0.866 inch minimum, pad replacement procedure.
Rear Brakes: Drum brakes, drum diameter: 10 inches, shoe replacement and adjustment.
Hydraulic System: Master cylinder service, brake line inspection, bleeding procedure. Parking brake: Cable adjustment and service.
Front suspension: Independent with torsion bars, shock absorber replacement. Rear suspension: Leaf springs with shock absorbers.
Tip: Always check wheel alignment after suspension component replacement.
12-volt negative ground system with 55-amp alternator.
WARNING! Disconnect battery before performing electrical work to prevent shorts and injury.
Body structure repair and interior component service.
Body Panels: Steel construction, rust prevention procedures. Doors: Adjustment and latch mechanism service. Glass: Windshield and window replacement. Seats: Removal and installation. Dashboard: Component access and removal.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | Fuel, spark, or compression issue | Check fuel delivery, spark plugs, compression test |
| Poor fuel economy | Carburetor adjustment, timing | Adjust carburetor mixture, check ignition timing |
| 4WD not engaging | Transfer case linkage, vacuum system | Check linkage adjustment, vacuum lines |
| Brake pulling | Stuck caliper, contaminated pads | Inspect calipers, replace pads, flush fluid |
| Electrical issues | Ground connections, alternator | Check grounds, test alternator output |
Diagnostic Procedures: Step-by-step troubleshooting for common issues.
Essential safety procedures for all service work.
CAUTION! Always use jack stands, wear safety glasses, and work in well-ventilated area. Follow proper lifting procedures for heavy components.
Factory-issued service bulletins for known issues and updates.
Common TSBs: Carburetor idle mixture adjustment, transfer case shift linkage improvement, brake master cylinder seal replacement. For latest bulletins, contact Isuzu dealership or technical service department.