MAINTENANCE SCHEDULE-EPA-RELATED PARTS
The following minimum intervals are being adopted for adjustment, cleaning, repair, or
replacement of following components:
At 1,500 hours, and 1,500-hours intervals thereafter:
• Fuel injector tips (cleaning only)
At 3,000 hours, and 3,000-hours intervals thereafter:
• Fuel injectors
Only applicable to the 4L42C and 4M42 engines:
At 1,500 hours, and 1,500-hours intervals thereafter:
• Fuel injector tips (cleaning only)
At 3,000 hours, and 3,000-hours intervals thereafter:
• Fuel injectors
• Cleaning of EGR pipe and intake manifold
The exhaust quality of the engines can be influenced by the execution (the quality of
execution) of above described maintenance work.
Therefore, the maintenance work has to be carried out by a qualified workshop.
Hatz authorised workshops, for example, are qualified workshops.
Hatz Diesel of America will give you respective addresses, if required.
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