Positioning:
Compact/Mid-size pickup truck known for durability, reliability, and value. Competed with vehicles like the Toyota Hilux/Tacoma, Nissan Hardbody/Frontier, and Mazda B-Series.
Key Strengths:
Robust chassis, dependable engines, simple mechanics, good payload capacity, often praised for off-road capability in 4WD variants.
Distinguishing Factors:
Offered both RWD and 4WD configurations, available in regular cab and extended cab (Spacecab) body styles. Known for its straightforward engineering.
Model Years Covered:
1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
Trim Levels Covered:
All standard trim levels (e.g., Standard, LS, S, Spacecab)
Estimated Page Count:
900-1200 (typical for comprehensive workshop manuals of this era)
Type:
Workshop Service Manual / Repair Manual
Powertrain:
Engine mechanical (assembly, disassembly, overhaul), fuel system (carburetor/injection, fuel pump, lines), ignition system, exhaust system, cooling system, lubrication system
Transmission Drivetrain:
Manual transmission (clutch, gearbox, linkages), automatic transmission (operation, overhaul), transfer case (4WD models), drive shafts, differentials, axles
Suspension Steering:
Front suspension (independent/solid axle depending on variant), rear suspension (leaf springs), steering system (rack and pinion/recirculating ball), power steering components
Brakes:
Front disc brakes, rear drum brakes (typical), hydraulic system, parking brake, ABS (if equipped on later models)
Electrical:
Battery, charging system (alternator), starting system, lighting, instrumentation, wiring diagrams, fuses, relays, power accessories
Body Chassis:
Frame construction, body panels, doors, windows, interior trim, seats, bumpers, payload bed, towing information
Routine Maintenance:
Oil changes, filter replacements (oil, air, fuel), fluid checks and top-offs, spark plug replacement, belt inspection and adjustment
Repair Rebuild:
Engine rebuild procedures, transmission overhaul, brake caliper/wheel cylinder replacement, suspension component replacement, steering gear repair, electrical component troubleshooting and replacement
Troubleshooting:
Diagnostic charts, symptom-based troubleshooting guides for common drivability, electrical, and mechanical issues
Depth:
Comprehensive - covers everything from basic preventative maintenance to complete engine, transmission, and drivetrain overhauls. Includes detailed specifications, diagnostic procedures, and repair instructions.
Engine Family:
Isuzu G-Series (G161, G180, G200) and 4J Series (4JA1, 4JB1 - Diesel)
Gasoline Engine Options:
1.6L (G161), 1.8L (G180), 2.0L (G200) OHC inline-4 gasoline engines
Diesel Engine Options:
2.2L (4JA1) and 2.4L (4JB1) naturally aspirated diesel inline-4 engines
Horsepower Range:
Approximately 70-100 HP for gasoline, 60-80 HP for diesel (specific figures vary by engine and year)
Torque Range:
Approximately 80-120 lb-ft for gasoline, 90-115 lb-ft for diesel (specific figures vary by engine and year)
Gasoline Fuel Delivery:
Carburetor (early models), Electronic Fuel Injection (EFI) on later models
Diesel Fuel Delivery:
Injection pump with mechanical injectors
Wheelbase Range:
Approx. 104.7 inches (standard) to 125.2 inches (long bed)
Overall Length Range:
Approx. 170 inches (standard) to 200 inches (long bed)
Curb Weight Range:
Approx. 2,600 - 3,500 lbs (depending on configuration)
Payload Capacity Range:
Approx. 1,000 - 1,500 lbs
NHTSA Ratings:
Not prominently advertised or consistently available for this era and model; typically focused on mechanical robustness.
Active Safety:
Standard braking system; Anti-lock Braking System (ABS) became available on select later models.
Passive Safety:
Lap and shoulder belts, reinforced cabin structure, side-impact door beams (on later models)
Oil Change Interval:
Typically every 3,000 - 5,000 miles or 3-6 months, depending on driving conditions and oil type used.
Air Filter Replacement:
Every 15,000 - 30,000 miles or as needed based on inspection.
Spark Plug Replacement:
Every 30,000 - 60,000 miles, depending on plug type (copper vs. platinum/iridium).
Coolant Flush:
Every 30,000 - 50,000 miles or 2-3 years.
Engine Oil Type:
API Service SG/SH or higher. Viscosity typically 10W-30 or 10W-40 (refer to manual for specific engine recommendations).
Coolant Type:
Ethylene Glycol based (green) coolant. Check manual for specific mixture ratio (50/50 typically).
Transmission Fluid Manual:
GL-4 gear oil. SAE 75W-90 or 80W-90.
Transmission Fluid Automatic:
Dexron II or equivalent.
Common Problems:
Rust on body panels and frame (especially in salt-belt regions), carburetor tuning issues (on older models), potential head gasket leaks (on certain engine variants), clutch wear, starter motor issues, alternator failure.
Isuzu Reputation:
Isuzu has a long history of producing robust diesel engines and commercial vehicles, translating to a reputation for durability in their light-duty trucks.
Kb Tf Series:
This generation, known as the TF series globally (and often referred to by its original KB designation), represented a significant redesign from previous Isuzu trucks, offering more modern styling and improved comfort.
Production Years For Generation:
Approximately 1985-1993 for the TF generation in most markets, though phased introductions varied.
Manufacturing Locations:
Primarily Japan, with significant assembly in other countries through partnerships (e.g., Thailand, General Motors plants in North America for rebadged versions).
