This 128 page  download training manual is a  designed for the experienced  Service Technician and covers:

• An overview of the 4HK and 6HK series fuel and engine management systems, including inputs and outputs of the ECM, along with sensor operation.
• Proper engine diagnostic procedures
• A basic understanding of the VNT turbocharger on both the 4HK and 6HK engines.
• A basic understanding of cam timing, valve adjustment and fuel injection pump timing procedures.
• PTO operation and programming
• Vehicle option programming
• Diesel fuel testing
• Diesel particular filter (DPF)
• Special Tools
• Tech Tips

This is an Isuzu factory training manual designed to trained factory technicians 

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