The 1987 Mighty Max is a compact pickup truck manufactured by Mitsubishi Motors, featuring a 2.0L or 2.6L gasoline engine, 5-speed manual transmission, rear-wheel drive, and payload capacity up to 1,400 lbs. This service manual covers maintenance procedures, specifications, troubleshooting, and repair guidelines for engine, transmission, brakes, suspension, electrical systems, and body components. Below are key sections for technical specifications, maintenance schedules, repair procedures, and troubleshooting.
Key technical data for 1987 Mighty Max models including engine options, dimensions, and capacities.
| Specification | Description |
|---|---|
| Engine Options | 2.0L 4G63 / 2.6L 4G54 inline-4 |
| Transmission | 5-speed manual / 3-speed automatic optional |
| Drivetrain | Rear-wheel drive |
| Payload Capacity | 1,400 lbs maximum |
| Fuel Capacity | 15.9 gallons |
| Wheelbase | 108.7 inches |
| Overall Length | 176.4 inches |
| Curb Weight | 2,645 lbs (2.0L model) |
| Brake System | Front disc / rear drum |
| Suspension | Independent front / leaf spring rear |
Recommended service intervals for optimal vehicle performance and longevity.
WARNING! Always use manufacturer-recommended fluids and parts. Follow torque specifications precisely.
Service procedures for 2.0L and 2.6L gasoline engines including tune-up specifications.
CAUTION! Disconnect battery before servicing electrical components. Allow engine to cool before opening cooling system.
Hydraulic brake system service including specifications and adjustment procedures.
Front Brakes: Disc, rotor diameter 10.2 inches, pad thickness minimum 0.08 inches
Rear Brakes: Drum, diameter 9.0 inches, shoe thickness minimum 0.04 inches
Master cylinder: Tandem type, reservoir capacity 0.6 liters. Brake pedal free play: 0.04-0.12 inches. Parking brake: Mechanical, rear wheels only, adjustment at equalizer.
Front independent suspension with torsion bars, rear leaf spring system.
Tip: Always check suspension components for wear during tire rotation.
12-volt negative ground system with alternator and battery specifications.
WARNING! Disconnect battery before electrical work. Use circuit tester for diagnosis.
Body dimensions, interior components, and maintenance procedures.
Common problems and diagnostic procedures for various systems.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | Fuel, spark, or compression issue | Check fuel delivery, spark plugs, ignition timing, compression |
| Poor fuel economy | Dirty air filter, misadjusted carburetor | Replace air filter, adjust carburetor mixture, check timing |
| Brake pull | Stuck caliper, contaminated pads | Inspect calipers, replace pads, flush brake fluid |
| Transmission noise | Low fluid, worn bearings | Check fluid level, inspect for metal particles |
| Electrical failure | Bad alternator, corroded connections | Test charging system, clean battery terminals |
Reset: Disconnect battery for 10 minutes to reset ECU if equipped.
Complete electrical schematics for starting, charging, lighting, and accessory systems.
Manufacturer-issued updates and corrections for known issues.
TSB 87-15: Revised carburetor adjustment procedure for high-altitude operation. TSB 87-22: Updated clutch master cylinder part number. TSB 87-31: Improved alternator bracket design to reduce belt slippage. For latest bulletins, contact Mitsubishi dealer with VIN.