Volvo Penta — Checking/changing sacrificial anodes
Maintenance · Cooling system anodes
From a Volvo Penta operator's manual covering: IPS 350, IPS 450, IPS 500. Check it applies to your exact model before use.
Applies to: Volvo Penta IPS 350, Volvo Penta IPS 450, Volvo Penta IPS 500
Before you start
- Risk of water entering; close seawater cock before work.
- Use no steel tools as this will impair electrical protection.
Procedure
- Close seawater cock.
- Drain seawater system.
- Remove sacrificial anodes in heat exchanger and intercooler.
- Check anodes; replace if less than 50% of original size; otherwise clean with sandpaper.
- Fit anodes with good contact; close drain nipples; open seawater cock; check for leaks.
Tools required
- sandpaper Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Replace anode if less than 50% of original size
Full service-parts list: Volvo Penta IPS 450 →
Source: Volvo Penta operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.