Isuzu Industrial Diesel Engine AA-4BG1T, AA-6BG1, BB-4BG1T, BB-6BG1T for JCB Workshop Manual PDF

This workshop manual is designed to help you perform necessary maintenance, service, and repair procedures on applicable Isuzu Industrial Diesel Engines AA-4BG1T, AA-6BG1, BB-4BG1T, BB-6BG1T Models for JCB machines.

The service information contained in this workshop service manual is the latest available at the time of publication.

This repair manual will become your indispensable assistant in the current maintenance of engines, as it contains detailed information on repairs, simple and clear instructions, many pictures and illustrations that will help to find and fix the problem.

The workshop manual is very easy to use, it comes in PDF format. To work with the manual you should install the application Adobe PDF Reader (or any other application that reads PDF format).

Models covered:
AA-4BG1T,
AA-6BG1,
BB-4BG1T,
BB-6BG1T.

CONTENTS:

• 1 GENERAL INFORMATION
  • General repair instructions
  • Notes on the format of this manual
  • Main data and specifications
  • External view
  • Tightening torque specifications
  • Angular nut and bolt tightening method
  • Major parts fixing nuts and bolts
  • Identifications
• 2 MAINTENANCE
  • Lubricating system
  • Fuel system
  • Cooling system
  • Valve clearance adjustment
  • Injection timing
  • Compression pressure measurement
  • Turbocharger inspection
  • Engine repair kit
  • Recommended lubricants
  • Engine oil viscosity chart
• 3 ENGINE ASSEMBLY I (DISASSEMBLY)
  • External parts disassembly steps
  • Major components
  • Rocker arm and rocker arm shaft disassembly steps
  • Cylinder head disassembly steps
  • Piston and connecting rod disassembly steps
• 4 ENGINE ASSEMBLY II (INSPECTION & REPAIR)
  • Cylinder head
  • Valve guide
  • Valve spring
  • Tappet
  • Pushrod
  • Rocker arm shaft and rocker arm
  • Idler gear and idler gear shaft
  • Camshaft
  • Cylinder body and liner
  • Piston and piston ring
  • Piston pin
  • Connecting rod
  • Crankshaft
  • Flywheel and flywheel housing
  • Timing gear case cover
• 5 ENGINE ASSEMBLY III (REASSEMBLY)
  • Piston and connecting rod reassembly steps
  • Cylinder head reassembly steps
  • Rocker arm and rocker arm shaft reassembly steps
  • Major component reassembly steps I
  • Major component reassembly steps II
  • External parts reassembly steps (Left-Hand Side)
  • External parts reassembly steps (Right-Hand Side)
  • Engine tuning operation
  • Engine sectional view
• 6 LUBRICATING SYSTEM
  • General description
  • Oil pump
  • Oil cooler
• 7 COOLING SYSTEM
  • General description
  • Thermostat
• 8 FUEL SYSTEM
  • General description
  • Injection nozzle
  • Injection pump calibration data
• 9 TURBOCHARGER
  • General description
  • Turbocharger identification
  • Inspection and repair
• 10 AIR COMPRESSOR
  • General description
  • Disassembly steps
  • Inspection and repair
  • Reassembly steps
• 11 ENGINE ELECTRICALS
  • Starter identification
  • Starter main data and specifications
  • Starter motor sectional view
  • Performance
  • Alternator identification
  • Main data and specifications
  • Alternator sectional view
  • Charging circuit
• 12 TROUBLESHOOTING
  • Hard starting
  • Unstable low idling
  • Insufficient power
  • Excessive fuel consumption
  • Excessive oil consumption
  • Overheating 
  • White exhaust smoke
  • Dark exhaust smoke
  • Oil pressure does not rise
  • Abnormal engine noise
• 13 SPECIAL TOOL LIST
  • Special tool list
• 14 REPAIR STANDARD
  • General rules
  • Repair standards
• 15 CONVERSION TABLE
  • LENGTH
  • AREA
  • VOLUME
  • MASS
  • PRESSURE
  • TORQUE
  • TEMPERATURE