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Isuzu 6BG1T User Manual

Isuzu 6BG1T
216 pages
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INDUSTRIAL
INDUSTRIAL
DIESEL ENGINE
DIESEL ENGINE
4B-6B SERIES
4B-6B SERIES
4BB1-4BD1-6BB1-6BD1-6BG1
4BB1-4BD1-6BB1-6BD1-6BG1
4BD1T-6BD1T-6BG1T
4BD1T-6BD1T-6BG1T
MODELS
MODELS
WORKSHOP MANUAL
ISUZU MOTORS LIMITED
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Table of Contents

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Isuzu 6BG1T Specifications

General IconGeneral
Engine Type4-cycle, water-cooled, direct injection
Number of Cylinders6
Compression Ratio17.5:1
Fuel SystemDirect injection
AspirationTurbocharged
Governor TypeMechanical
Cooling SystemWater-cooled
Starting SystemElectric starter
Displacement6.494 liters
Lubrication SystemForced feed with gear pump

Summary

General Information

General Repair Instructions

Provides guidance on safe and proper procedures for engine service operations, including precautions.

Main Data and Specifications

Provides detailed specifications for engine models 4BB1, 4BD1, and 4BD1T, including dimensions, capacities, and pressures.

Tightening Torque Specifications

Lists torque values for various bolts and nuts across different engine models, presented in a table.

Angular Nut and Bolt Tightening Method

Explains the procedure for tightening nuts and bolts using an angular method, including preparation and execution steps.

Major Parts Fixing Nuts and Bolts

Illustrates torque specifications for key components like the cylinder head and cover, and cylinder body.

Maintenance

Valve Clearance Adjustment

Provides instructions for checking and adjusting valve clearance, including relevant specifications and procedures.

Injection Timing

Details the procedure for checking and adjusting the injection timing for optimal engine performance.

Compression Pressure Measurement

Explains how to measure engine compression pressure and provides standard and limit values.

Engine Assembly I (Disassembly)

Major Components-I

Shows an exploded view of major engine components and lists disassembly steps for the first group.

Major Components - II

Presents an exploded view of major engine components and lists disassembly steps for the second group.

Cylinder Head Disassembly Steps

Shows an exploded view of the cylinder head and lists its disassembly steps, including valve components.

Piston and Connecting Rod Disassembly Steps

Illustrates the piston and connecting rod assembly and lists disassembly steps.

Engine Assembly II (Inspection & Repair)

Cylinder Head

Details inspection and repair procedures for the cylinder head, including warpage and height measurements.

Valve Guide

Explains methods for measuring valve stem and valve guide clearance and procedures for valve guide replacement.

Camshaft

Provides procedures for removing the camshaft, measuring journal and cam lobe clearances, and checking run-out.

Cylinder Body and Liner

Details measurement procedures for cylinder liner bore, projection, and replacement steps.

Crankshaft

Provides procedures for inspecting crankshaft journal and crankpin outside diameter, and bearing clearances.

Engine Assembly III (Reassembly)

Engine Tuning Operation

Details the procedure for tuning the engine after reassembly, including electrical and fuel system connections.

Lubricating System

Cooling System

Fuel System

Injection Pump Calibration Data

Provides essential data and specifications required for fuel injection pump adjustment and calibration.

Turbocharger

Air Compressor

Engine Electricals

Troubleshooting

Hard Starting

Provides troubleshooting steps for hard starting issues, identifying potential causes and remedies.

Starter Operates But Engine Does Not Turn Over

Troubleshooting guide for when the starter engages but the engine fails to turn over.

Engine Turns Over But Does Not Start

Troubleshooting steps for when the engine cranks but does not start, focusing on fuel delivery issues.

Insufficient Power

Troubleshooting steps for insufficient engine power, covering air, fuel, and combustion issues.

Overheating

Troubleshooting guide for engine overheating, covering cooling system and fuel injection timing issues.

Oil Pressure Does Not Rise

Troubleshooting steps for low or non-existent oil pressure, focusing on oil system components and wear.

Abnormal Engine Noise

Troubleshooting guide for various abnormal engine noises, categorizing them by cause like knocking or gas leakage.

Special Tool List

Conversion Table

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