Group 26 Cooling System
Cooling system, cleaning Part no.: 1141658-3
Repair instructions 6 If any contamination remains, repeat the cleaning until the system is free from contamination. 7
1 Drain the cooling system, see “Cooling system, draining”. 2 NOTE: If the cooling system is cleaned regularly by draining and refilling with a rust-protection fluid, less cleaning additive or simply flushing with pure water may be sufficient.
When the cooling system is completely free from contamination, fill with fresh coolant. In areas where Volvo Penta concentrated coolant is not available, use water with a corrosion protection additive. NOTE: Mix the correct volume in advance to be sure that the system is filled.
3 Flush the cooling system with fresh water. 4 Fill the cooling system with radiator cleaner, item no. 1141658-3 (see instructions on package). Then run the engine up to normal working temperature and allow it to run for at least another 2 hours. NOTE: Alternatively, fill the system with 15–20% concentrated coolant and drain it out after 1–2 days’ operation. 5 Drain the cooling system and then flush it out with a mixture of neutralizer, part no. 1141658-3 (see instructions on package).
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