Isuzu Pick-ups 1981 Full Service Repair Manual

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🏷️ Basic Information Identification Make: Isuzu Model: Pick-up Year: 1981 👋 Introduction Market Position Vehicle Segment: Compact/Mid-size pickup truck, known for ruggedness and reliability in its class. Competitive Analysis Key...

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Type: Truck

Vendor:

Sku: 445202

Tags: 1981 Cars Isuzu Misc Pick-ups Truck

Product variants

Description

🏷️ Basic Information

Identification

Make:

Isuzu

Model:

Pick-up

Year:

👋 Introduction

Market Position

Vehicle Segment:

Compact/Mid-size pickup truck, known for ruggedness and reliability in its class.

Competitive Analysis

Key Competitors:

Datsun/Nissan King Cab, Toyota Hilux, Mazda B-Series, Mitsubishi Mighty Max.

Key Features

Vehicle Strengths:

Durable construction, fuel-efficient engines (for the era), capable off-road (especially 4x4 models).

Manual Value Proposition

Manual Benefit:

Essential for owners and technicians to maintain, repair, and restore these classic pickups.

📋 Manual Details

Coverage Areas

Manual Type:

Full Service Repair Manual

Language:

English

Format:

Likely Printed (common for this era), potential for PDF scans

📖 Manual Coverage

Systems Covered

Engine Service:

Detailed disassembly, assembly, inspection, and repair procedures for engine components.

Fuel System:

Carburetor, fuel pump, fuel lines, fuel tank servicing and troubleshooting.

Cooling System:

Radiator, water pump, thermostat, fan, coolant specifications, and service.

Ignition System:

Distributor, spark plugs, ignition coils, timing adjustment procedures.

Exhaust System:

Muffler, catalytic converter (if applicable for the market), exhaust manifold, and pipe repair.

Transmission Manual:

Clutch, gearbox disassembly, assembly, fluid specifications, and adjustment.

Transmission Automatic:

Component inspection, fluid checks, and general service procedures (if automatic was an option).

Driveline And Axles:

Driveshaft, U-joints, rear axle servicing and repair.

Suspension System:

Front and rear suspension components, springs, shock absorbers, and alignment specifications.

Steering System:

Steering column, steering gear, power steering pump (if equipped), and linkages.

Brake System:

Front and rear brake inspection, pad/shoe replacement, caliper/wheel cylinder service, hydraulic system bleeding.

Electrical System:

Battery, charging system, starting system, lighting, fuses, relays, and basic wiring diagrams.

Body And Chassis:

Body panel repair, frame inspection, door mechanisms, interior trim removal/installation.

Heating And Air Conditioning:

HVAC system components, refrigerant handling (basic), blower motor, and controls.

Procedures Included

Routine Maintenance:

Oil changes, filter replacements, fluid checks, lubrication, tune-up procedures.

Troubleshooting:

Diagnostic charts and symptom-based troubleshooting guides for common issues.

Component Rebuilding:

Detailed instructions for rebuilding carburetors, transmissions, and engine components.

Disassembly And Assembly:

Step-by-step guides for removing, installing, and reassembling major vehicle systems.

Specifications And Tolerances:

Torque values, clearances, and critical measurements for engine, transmission, and chassis components.

Technical Depth

Depth Of Coverage:

Comprehensive: Covers everything from basic maintenance to in-depth engine and transmission rebuilds.

Diagnostic Information:

Includes diagnostic procedures and troubleshooting tips for common problems.

Wiring Diagrams:

Likely includes basic electrical system wiring diagrams for troubleshooting.

📊 Manual Specifications

File Format

Format Details:

Physical print is expected for 1981 manuals. Digital PDF versions may exist as scans.

Print Quality

Paper Quality:

Typically newsprint or semi-gloss paper for manuals of this era.

Binding Type

Binding Style:

Likely saddle-stitched or perfect bound, designed for shop use.

⚙️ Engine Specifications

Primary Engine

Engine Code Common:

G180SS (1.8L Inline-4, gasoline), C190 (1.9L Inline-4, diesel - less common in some markets)

Displacement Gasoline:

1.8 Liters (1817 cc)

Bore X Stroke Gasoline:

Approximately 84.0 mm x 82.0 mm

Compression Ratio Gasoline:

Likely around 8.5:1 to 9.0:1

Horsepower Gasoline:

Around 70-77 hp @ 4600-5000 RPM

Torque Gasoline:

Around 90-95 lb-ft @ 2600-3000 RPM

Fuel System

Fuel Delivery Gasoline:

Single Barrel Carburetor (e.g., Hitachi or Rochester)

Fuel Type:

Unleaded gasoline

Lubrication System

Oil Type Recommendation:

API SF or SG rated, SAE 10W-30 or 10W-40 depending on climate

Oil Capacity With Filter:

Approximately 4.5 US quarts (4.3 Liters)

Cooling System

Coolant Type:

Ethylene glycol-based antifreeze (typically a 50/50 mix with distilled water)

Coolant Capacity:

Approximately 6.0 US quarts (5.7 Liters)

Ignition System

Spark Plug Gap:

Typically 0.032 - 0.036 inches (0.8 - 0.9 mm)

Ignition Timing Initial:

Around 5-10 degrees BTDC (Before Top Dead Center), requires vacuum hose disconnected and plugged for base timing adjustment.

🔧 Transmission

Standard

Transmission Type Standard:

4-speed Manual Transmission

Optional

Transmission Type Optional:

3-speed Automatic Transmission (less common, availability may vary by market)

Features

Manual Transmission Fluid:

API GL-4, SAE 75W-90 or 80W-90 Gear Oil

Automatic Transmission Fluid:

Dexron-II (or equivalent specification) Automatic Transmission Fluid

Clutch Type:

Dry, single-plate diaphragm spring clutch

📐 Dimensions

Exterior

Wheelbase Short Bed:

Approximately 104.3 inches (2650 mm)

Wheelbase Long Bed:

Approximately 118.1 inches (3000 mm)

Overall Length:

Varies by bed length, approx. 174-190 inches (4420-4826 mm)

Overall Width:

Approximately 66.7 inches (1695 mm)

Overall Height:

Approximately 62.8 inches (1595 mm) for 2WD, higher for 4WD

Cargo

Bed Length Short:

Approximately 72.6 inches (1845 mm)

Bed Length Long:

Approximately 87.4 inches (2220 mm)

Weights

Curb Weight:

Approximately 2500-3000 lbs (1134-1361 kg), depending on configuration

Payload Capacity:

Typically around 1000-1500 lbs (454-680 kg)

Towing Capacity:

Generally rated for 2000-3500 lbs (907-1588 kg), depending on configuration and market.

🛡️ Safety Features

Ratings

Crash Test Data:

Limited public crash test data available for this specific model year from official agencies. Vehicles of this era lacked many modern safety features.

Active Features

Braking System Type:

Front Disc Brakes, Rear Drum Brakes

Parking Brake:

Mechanical, operates on rear wheels

Passive Features

Seat Belts:

Standard lap belts or three-point front belts depending on trim and market.

Headrests:

Typically fixed, integrated into seat design.

💡 Technology Features

Infotainment

Audio System:

Basic AM/FM radio, potentially with an 8-track player or cassette deck as an optional upgrade.

Driver Assistance

Driver Assistance Features:

None by modern standards. Basic features like power steering (optional) were the extent of driver aids.

Connectivity

Connectivity Features:

No electronic connectivity features.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,000 miles (5,000 km) or 3-6 months, whichever comes first.

Filter Replacement Interval:

Oil filter: with every oil change. Air filter: inspect every 6,000 miles (10,000 km), replace as needed or annually.

Transmission Fluid Change:

Manual: every 30,000 miles (50,000 km). Automatic: every 20,000-30,000 miles (30,000-50,000 km) or annually.

Coolant Flush Interval:

Every 24,000 miles (40,000 km) or 2 years.

Tune Up Interval:

Every 12,000 miles (20,000 km) or annually, including spark plugs, distributor cap/rotor, and timing check.

Fluid Specifications

Brake Fluid Type:

DOT 3 or DOT 4 Hydraulic Brake Fluid

Power Steering Fluid Type:

If equipped: ATF Dexron-II or equivalent. If not equipped, no fluid required.

Known Issues

Common Wear Items:

Carburetor wear, clutch wear, U-joint wear, exhaust system rust, potential for radiator leaks.

Electrical Aging:

Aging wiring harnesses, corrosion on electrical connectors, and weakening starter/alternator components are common with age.

Suspension Wear:

Ball joints, tie rod ends, and bushings can wear out over time, affecting steering and ride quality.

📚 Vehicle History

Brand Heritage

Isuzu Origins:

Isuzu Motors Ltd. is a Japanese commercial vehicle and diesel engine manufacturer, historically known for its robust and reliable vehicles.

Model Evolution

Predecessor Model:

Isuzu Faster (known as Chevrolet LUV in some markets earlier)

Generation Context:

This 1981 model represents a continuation of Isuzu's popular compact pickup truck line, a segment where they established a strong reputation.

Production

Manufacturing Location:

Primarily Japan, with assembly potentially occurring in other international markets.

🏆 Awards & Recognition

Recognitions

Historical Market Perception:

Isuzu pickups of this era were generally regarded as utilitarian, dependable, and cost-effective, especially the diesel variants in certain markets.