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Isuzu A-6BG1T User Manual

Isuzu A-6BG1T
208 pages
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Doosan purchased Bobcat Company from Ingersoll-Rand Company in
2007. Any reference to Ingersoll-Rand Company or use of trademarks,
service marks, logos, or other proprietary identifying marks belonging
to Ingersoll-Rand Company in this manual is historical or nominative
in nature, and is not meant to suggest a current affiliation between
Ingersoll-Rand C
ompany and Doosan
Company or the products of
e
ith
er.
Revised (10-12)
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Isuzu A-6BG1T Specifications

General IconGeneral
Engine ModelA-6BG1T
Engine Type4-cycle, water-cooled, direct injection
Number of Cylinders6
Compression Ratio17.5:1
AspirationTurbocharged
Fuel SystemDirect injection
Fuel TypeDiesel
Cooling SystemWater-cooled
Maximum Torque1, 600 rpm
Lubrication SystemForced lubrication with gear pump
Displacement6.494 L (396.3 cu in)

Summary

General Information and Specifications

General Repair Instructions

Essential guidelines for safe and correct engine service operations.

Tightening Torque Specifications

Required torque values for various bolts and nuts across different engine models.

Angular Nut and Bolt Tightening Method

Procedure for tightening nuts and bolts using angular rotation.

Major Part Fixing Nuts and Bolts

Illustrates and specifies torques for fixing major engine components.

Maintenance Procedures

Lubricating System Maintenance

Procedures for lubricating system maintenance, including oil filter replacement.

Fuel System Maintenance

Procedures for fuel system maintenance, including filter, nozzle, and overflow valve.

Cooling System Maintenance

Procedures for cooling system maintenance, including belt, thermostat, and valve clearance.

Injection Timing Adjustment

Procedure for adjusting engine injection timing for optimal performance.

Compression Pressure Measurement

Method for measuring engine compression pressure using a gauge.

Recommended Lubricants and Oil Viscosity

Recommended lubricants and engine oil viscosity chart based on temperature.

Engine Assembly - Disassembly

External Parts Disassembly

Steps for disassembling external engine parts from both sides.

Injection Pump and Air Compressor Removal

Procedures for removing injection pump and air compressor, including alignment marks.

Engine Assembly - Inspection and Repair

Engine Assembly - Reassembly

Engine Tuning and Run-in Procedure

Engine tuning, checks, and run-in process after reassembly.

Lubricating System

Cooling System

Fuel System

Injection Pump Calibration Data and Test Conditions

Test conditions, nozzle specs, and calibration data for fuel injection amount adjustment.

Governor Adjustment Procedures

Governor adjustment procedures including speed droop and lever angle settings.

Turbocharger

Air Compressor

Troubleshooting

Troubleshooting: Hard Starting

Diagnosing issues related to hard starting, including starter and fuel delivery problems.

Troubleshooting: Unstable Low Idling

Diagnosing and resolving issues causing unstable low idling.

Troubleshooting: Insufficient Power

Diagnosing causes of insufficient engine power.

Troubleshooting: Excessive Fuel Consumption

Diagnosing causes of excessive fuel consumption.

Troubleshooting: Excessive Oil Consumption

Diagnosing causes of excessive engine oil consumption.

Troubleshooting: Engine Overheating

Diagnosing and resolving engine overheating issues.

Troubleshooting: White Exhaust Smoke

Diagnosing causes of white exhaust smoke.

Troubleshooting: Dark Exhaust Smoke

Diagnosing causes of dark exhaust smoke.

Troubleshooting: Low or No Oil Pressure

Diagnosing and resolving issues with low or no engine oil pressure.

Troubleshooting: Abnormal Engine Noise

Diagnosing and resolving causes of abnormal engine noise.

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