Volvo Penta — Checking/changing seawater pump impeller
Maintenance
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 for water penetration.
- Impeller will be damaged if lubricants other than glycerin are used.
Procedure
- Remove cover from seawater pump and remove impeller.
- Replace impeller if cracked or defective; replace flange if pump shaft turns by hand.
- Lubricate pump housing and inside of cover with glycerin.
- Reinstall impeller using a rotating movement; install seal washers on shaft center.
- Install cover with a new O-ring.
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.