🏷️ Basic Information Identification Make: Isuzu Model: Trooper Year: 1987 Codes Chassis Code: UBS12, UBS13, UBS17, UBS25, UBS26, UBS52, UBS55, UBS57, UBS62, UBS66, UBS69 Engine Codes: 4ZD1, 4ZE1, 4XF1, 4JG2 👋 Introduction Market Position Segment: Compact SUV / Off-road Vehicle Target Audience: Off-road enthusiasts, utility vehicle owners, DIY mechanics, professional repair shops. Competitive Analysis Competitors: Jeep Cherokee (XJ), Toyota 4Runner, Nissan Pathfinder, Ford Bronco II. Key Features Vehicle Attributes: Body-on-frame construction, available 4WD, robust drivetrain, practical utility, off-road capability. Manual Value Benefit: Empowers owners and technicians with comprehensive knowledge for accurate diagnosis, repair, and maintenance, ensuring optimal performance and longevity. 📋 Manual Details Coverage Areas All Systems: Yes Engine Mechanical: Yes Engine Electrical: Yes Fuel System: Yes Ignition System: Yes Cooling System: Yes Exhaust System: Yes Transmission Manual: Yes Transmission Automatic: Yes Transfer Case: Yes Driveshafts Axles: Yes Suspension Front: Yes Suspension Rear: Yes Steering System: Yes Brake System: Yes Wheel Tire Assembly: Yes Frame Chassis: Yes Body Exterior: Yes Body Interior: Yes HVAC System: Yes Electrical System Lighting: Yes Electrical System Instruments: Yes Electrical System Accessories: Yes Diagnostics Troubleshooting: Yes Wiring Diagrams: Yes Torque Specifications: Yes Page Count Estimated Pages: 1000+ Manual Type Type: Factory Service Manual (FSM) Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered All Major Systems: Comprehensive coverage of all major mechanical, electrical, and body systems specific to the 1987 Isuzu Trooper. Procedures Included Maintenance Repair: Detailed step-by-step procedures for scheduled maintenance, routine repairs, and major overhauls. Diagnostics: In-depth diagnostic strategies, troubleshooting trees, and common fault identification for all vehicle systems. Adjustments: Precise instructions for system adjustments, alignments, and calibrations. Disassembly Reassembly: Complete disassembly and reassembly procedures for all major components and sub-assemblies. Technical Depth Depth: Professional technician level, suitable for complex diagnostics, engine rebuilds, transmission overhauls, and electrical system troubleshooting. 📊 Manual Specifications File Format Compatibility: Viewable on any device with a PDF reader (PC, Mac, tablet, smartphone). Print Quality Quality: High-resolution scans ensuring clarity of text, diagrams, and photographs. Printable for workshop use. Binding Type Digital: N/A (Digital Download) Paper Type Digital: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine 1 Displacement: 2.3L (2315cc) Engine 1 Code: 4ZD1 Engine 1 Type: Inline-4, SOHC, Naturally Aspirated Engine 1 Fuel Delivery: Carbureted (e.g., Nikki 2-barrel) Engine 1 Horsepower: Approx. 110-120 hp Engine 1 Torque: Approx. 130-140 lb-ft Optional Engine Engine 2 Displacement: 2.6L (2559cc) Engine 2 Code: 4ZE1 Engine 2 Type: Inline-4, SOHC, Naturally Aspirated Engine 2 Fuel Delivery: Fuel Injection (EFI) Engine 2 Horsepower: Approx. 120-130 hp Engine 2 Torque: Approx. 140-150 lb-ft Engine 3 Displacement: 2.4L (2383cc) Diesel Engine 3 Code: 4XF1 Engine 3 Type: Inline-4, OHV, Naturally Aspirated Diesel Engine 3 Fuel Delivery: Indirect Injection Engine 3 Horsepower: Approx. 70-75 hp Engine 3 Torque: Approx. 100-105 lb-ft Performance Engine Cooling: Water-cooled Fuel System Fuel Type: Unleaded gasoline (87 octane recommended), Diesel 🔧 Transmission Standard Transmission Type Std: 5-speed Manual (MSB 5-speed) Optional Transmission Type Opt: 4-speed Automatic (JATCO 4-speed) Features Drivetrain: Part-time 4WD with manual or automatic front hub locking (optional). Transfer Case: Two-speed transfer case with high (2H/4H) and low (4L) range options. 📐 Dimensions Exterior Wheelbase Short: 94.3 inches (2395 mm) (2-door models) Wheelbase Long: 109.1 inches (2770 mm) (4-door models) Weights Curb Weight Est: 3600 - 4200 lbs (1633 - 1905 kg), depending on configuration. Gross Vehicle Weight Rating Est: 5000 - 5500 lbs (2268 - 2495 kg) 🛡️ Safety Features Ratings Crash Test Data: Limited specific crash test data available for this model year in public domain. Early 1980s SUV safety standards applied. Active Features Braking System: Front ventilated disc brakes, rear drum brakes. Power assist standard. Passive Features Seat Belts: Standard seat belts. Lap belts in rear seating positions. 💡 Technology Features Infotainment Audio System: Factory AM/FM radio with cassette player, optional upgraded systems. Driver Assistance ABS: Anti-lock Braking System (ABS) was an optional feature on some models, often rear-wheel only for this generation. Connectivity No Modern Connectivity: No integrated Bluetooth, USB, or advanced electronic driver aids typical of modern vehicles. 🔧 Maintenance Service Intervals Oil Change: Every 3,000 miles (4,800 km) or 3 months, whichever comes first. Oil Filter Change: With every oil change. Air Filter Replacement: Every 15,000 miles (24,000 km) or 12 months. Spark Plug Replacement: Every 30,000 miles (48,000 km) for gasoline engines. Transmission Fluid Change: Manual: Every 60,000 miles (96,000 km). Automatic: Every 30,000 miles (48,000 km). Coolant Flush: Every 30,000 miles (48,000 km) or 24 months. Fluid Specifications Engine Oil: API SF or SG, SAE 10W-30 (preferred) or 10W-40. API CE or CF for Diesel. Engine Oil Capacity: Approx. 4.5 quarts (4.3 L) with filter change (4ZD1). Transmission Fluid Manual: API GL-4, SAE 75W-90 or 80W-90. Transmission Fluid Automatic: Dexron-II (or equivalent) ATF. Transfer Case Fluid: API GL-4, SAE 75W-90 or 80W-90. Differential Fluid Front Rear: API...