Model:
KB / TF Series (140)
Engine Code:
4ZD1 (commonly associated with the 140 designation, though further verification for specific markets is advised)
Model Years Covered:
1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
Vin Decoder Section Availability:
Likely includes VIN decoding information for model year identification and component traceability.
Segment:
Light Commercial Vehicle (LCV) / Pickup Truck / Utility Vehicle.
Target Audience:
Workhorse vehicle for small businesses, agriculture, fleet operations, and personal utility.
Key Competitors:
Toyota Hilux, Mitsubishi Triton/Pajero Sport, Nissan Navara, Ford Ranger (depending on market and year).
Value Proposition:
Known for ruggedness, reliability, simplicity, and cost-effectiveness in its segment.
Durability:
Built for tough conditions and demanding use, a hallmark of Isuzu's LCV reputation.
Simplicity Of Design:
Relatively straightforward mechanicals, making maintenance and repair more accessible.
Engine Options:
Focus on robust diesel engines in many markets, with gasoline variants also available. The '140' likely refers to a specific engine displacement or power output variant.
Engine Systems:
Fuel system (carburetor or injection, depending on market/year), ignition system, cooling system, lubrication system, emission control systems, engine mechanical (cylinder head, block, pistons, crankshaft, camshaft).
Transmission Systems:
Manual transmission (shift mechanisms, gears, bearings, seals), automatic transmission (if applicable for specific models covered), clutch system.
Drivetrain Systems:
Driveshafts, universal joints, differentials (rear axle, 4WD transfer case if applicable), hubs.
Suspension And Steering:
Front and rear suspension components (leaf springs, shock absorbers, control arms, ball joints), steering gear, power steering system (if equipped), steering linkage.
Brake Systems:
Front and rear brake systems (disc or drum), hydraulic system (master cylinder, brake lines, calipers, wheel cylinders), parking brake.
Electrical Systems:
Starting system (starter motor, battery), charging system (alternator, voltage regulator), lighting system (headlights, taillights, indicators), dashboard instruments and indicators, wiring diagrams, fuses and relays, ignition switch, horn, wipers, washers.
Body And Chassis:
Frame construction, body panels, doors, windows, glass, interior trim, seat adjustments, exterior trim, bumpers, towing points.
HVAC System:
Heating and ventilation system components, blower motor, heater core, ducting, air conditioning system (if factory equipped, including refrigerant handling precautions).
Routine Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, tire rotation, brake inspections, lubrication points, air filter service, spark plug replacement, timing belt/chain inspection and replacement procedures.
Diagnostic Procedures:
Troubleshooting charts based on symptoms, diagnostic trouble codes (DTCs) for electronic fuel injection (EFI) systems if applicable, electrical system diagnostics, fuel system pressure testing, compression testing.
Repair And Rebuild:
Engine disassembly and reassembly, cylinder head servicing, piston and connecting rod installation, crankshaft and bearing replacement, transmission overhaul, brake caliper and wheel cylinder rebuilding, carburetor rebuilding (if applicable), suspension component replacement.
Electrical Troubleshooting:
Step-by-step troubleshooting for electrical faults using wiring diagrams, testing procedures for sensors, actuators, and control modules.
Bodywork And Paint:
Likely includes basic body repair procedures, panel alignment, door and window glass replacement, and possibly paint code information.
Depth Of Coverage:
Comprehensive. Covers everything from basic owner maintenance to in-depth mechanical repairs and diagnostics, suitable for professional mechanics and advanced DIYers.
Diagrams And Illustrations:
Extensive use of exploded views, line drawings, schematics, and flowcharts to illustrate procedures and component identification.
Specifications And Tolerances:
Detailed torque specifications, clearances, fluid capacities, wear limits, and pressure specifications for all major components.
Engine Family:
Isuzu 4ZD1 (Gasoline, 2.3L) and potentially diesel variants like the C223 or 4JA1 (depending on market and specific '140' interpretation).
Displacement Gasoline:
Approximately 2.3 Liters (2254 cc) for the 4ZD1.
Displacement Diesel:
Common diesel options include 2.2L (C223) or 2.5L (4JA1).
Horsepower Gasoline 4Zd1:
Typically around 90-100 PS (approx. 88-98 HP) at 4,200-4,800 RPM, depending on tuning and market regulations.
Torque Gasoline 4Zd1:
In the range of 170-185 Nm (approx. 125-136 lb-ft) at 2,500-3,000 RPM.
Performance Diesel Variants:
Diesel variants (e.g., 4JA1) typically offered higher torque for towing and hauling, with lower horsepower figures.
Fuel Delivery Gasoline:
Carburetor (common in earlier models and certain markets) or Electronic Fuel Injection (EFI) (more prevalent in later models and specific regions).
Fuel Delivery Diesel:
Injection pump (mechanical rotary or inline).
Fuel Type:
Unleaded Gasoline (for 4ZD1), Diesel Fuel (for diesel variants).
Cylinder Block Material:
Cast Iron
Cylinder Head Material:
Aluminum Alloy (common for 4ZD1)
Timing Mechanism:
Timing Belt (for 4ZD1), Timing Chain (common for many diesel variants).
Wheelbase:
Varies by body style (single cab, extended cab), but common lengths include around 2750 mm to 3050 mm.
Overall Length:
Varies significantly with cab and bed configuration. Typically between 4.5m and 5.3m.
Ground Clearance:
Generally good for off-road capability, often exceeding 200mm depending on tire size and suspension.
Curb Weight:
Typically ranges from 1300 kg to 1700 kg depending on configuration (2WD vs 4WD, cab type, engine).
Gross Vehicle Weight Rating:
Likely in the range of 2500 kg to 2900 kg, indicating payload capacity.
Towing Capacity:
Highly dependent on configuration and market regulations, but typically capable of towing loads in the 1500 kg to 2500 kg range.
Engine Oil Change:
Typically every 5,000 - 10,000 km (3,000 - 6,000 miles) or 6 months, depending on operating conditions and oil type.
Oil Filter Replacement:
At every engine oil change.
Air Filter Replacement:
Every 15,000 - 30,000 km (9,000 - 18,000 miles) or as needed based on dust conditions.
Spark Plug Replacement:
Approximately every 30,000 - 40,000 km (18,000 - 25,000 miles) for standard plugs.
Timing Belt Replacement:
Crucial for 4ZD1 engines. Typically every 80,000 - 100,000 km (50,000 - 60,000 miles). Failure can cause severe engine damage.
Engine Oil Viscosity:
Refer to manual, but common for the era: 10W-30 or 10W-40 API SG or higher for gasoline; 15W-40 API CF or higher for diesel.
Coolant Type:
Ethylene glycol based antifreeze. Refer to manual for specific mixture ratio (e.g., 50/50).
Transmission Fluid Manual:
GL-4 gear oil, typically 75W-90 or 80W-90.
Transmission Fluid Automatic:
Dexron II or equivalent (if applicable).
Brake Fluid Type:
DOT 3 or DOT 4.
Engine Reliability:
Generally robust, but common issues can include oil leaks from seals, head gasket failure under severe conditions, carburetor issues (if equipped), and timing belt wear on the 4ZD1.
Suspension Wear:
Leaf spring wear and bushings can degrade over time, especially with heavy loads. Ball joints and tie rod ends are also common wear items.
Electrical Corrosion:
Wiring harness connectors and ground points can be susceptible to corrosion in humid or salty environments.
Rust And Corrosion:
As with many vehicles of this era, body rust, particularly in wheel wells, sills, and around door bottoms, can be a significant issue depending on climate and maintenance.
