Volvo Penta D4 Operator's Manual page 52

Maintenance schedule
Every 1200 hours / at least every 5 years:
● Drive belts. Change ........................................................................................ page 53
Drive belt, compressor. Change ................................................................. not shown
● Compressor. Change oil .................................................................................page 54
Heat exchanger. Inspection/Cleaning ......................................................... not shown
Intercooler. Inspection/Cleaning ................................................................. not shown
Control cables and seals. Change .............................................................. not shown
Coolant pipes. Inspection ........................................................................... not shown
– Checking hoses, unions and hose clamps
Safety and function check ........................................................................ not shown
– In a safety and function check, the outboard drive is disassembled to check for wear
and damage. Any faults are rectified. If necessary, the complete drive is changed.
1) Oil change intervals vary, depending on oil grade and sulfur content of the fuel. Please refer to page 56.
2) Change the filters during each oil change.
3) If the fresh water system is filled with a rust protection mixture, it must be changed every year. On the
other hand, if the fresh water system is filled with anti-freeze (glycol mixture), it must be changed every
second year.
4) IMPORTANT! In operation situations where the number of forward-reverse operations averages
more than 20 per hour, the oil should be changed every 100 hours.
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